[Technology]
Mutual citations and related application (s)
This application claims the benefit of priority based on the 24-day Korea Patent Application No. 10-2017- 0158933 November 2017, and all information disclosed in the literature of the Korea patent application are included as part of the specification.

The present invention relates to a high-water absorbent resin composition, and it represents an enhanced antimicrobial and deodorant properties, without sacrificing the basic absorption performance of the water absorbent resin composition.

[Background Art]

Gotop aqueous resin (Super Absorbent Polymer, SAP) Lanza of body weight of about 500 to 1,000 times water of a synthetic polymeric material having the ability to absorb, developers, each SAM (Super Absorbency Material), AGM (Absorbent Gel material), etc. are each named with a different name. superabsorbent polymer as described above is to begin commercialization of physiological instruments, and now children's diapers, etc. sanitary ware besides horticultural sheet for soil repair filler, engineering, construction index material, a nursery for are widely used ranging from materials and electrical insulation for the field of freshness in the food distribution sector, and a poultice.

However, these high-absorbency resin is the most widely used in disposable absorbent hygiene products, or products such as children's diapers or diapers. Among them, when applied to diapers for adults, the second due to the bacterial growth of

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The smell is causing the problem, causing significant discomfort to call consumers. To solve this problem, a bar made an attempt to introduce various deodorant or antimicrobial functional components in superabsorbent resin composition before.

However, in the conventional attempt to introduce these various deodorant / antibacterial functional components, and as well as a deodorant / anti-bacterial properties of the water absorbent resin hayeoteul not enough, to lower the stability of the superabsorbent resin causes the degradation of the fundamental absorption performance, or to the component itself such a functional relationship is too high and there was a disadvantage such as a unit price of the water absorbent resin composition is too high.

Accordingly, high indicates a better anti-bacterial and deodorant properties, without sacrificing the basic absorption performance of the water absorbent resin, has been to develop a water absorbent resin composition it is continuously request and having a good economical efficiency.

[Detailed Description of the Invention]

[SUMMARY]

The purpose of this invention is to represent and improved antimicrobial and deodorant properties, without sacrificing the ability to absorb basic service hygiene article comprising water-absorbing resin composition, and this.

[Technical Solution]

The invention gotop water-based resin particles containing an acidic group and at least some of the cross-linked polymer is neutralized with a water-soluble ethylenically unsaturated monomer of the acid group;

Table 汗 shows or chelate comprises an alkali metal salt of the agent; and

Superabsorbent polymer containing an organic acid and a silicate-based salt mixture 2019/103317 1 »(1 ^ 1 {2018/012434

It provides compositions.

The invention also provides the high hygiene article comprising a water absorbent resin composition.

【Effects of the Invention】

According to the superabsorbent resin composition of the present invention, the beam SAT, pressing without fundamental reduction in the absorption performance, such as absorption capacity, to be greatly improved antimicrobial properties and thus the deodorizing properties according to the bacteria causing the odor in the hygiene products such as diapers for expression can. In particular, since relatively sikilsu manifests such deodorant / antibacterial properties through the synergistic effects of a low-cost material, it can greatly contribute to low cost and economic feasibility of the superabsorbent polymer composition.

[Mode for Carrying out the invention]

Used herein shall be used to describe only the exemplary embodiments, and are not intended to limit the turning of the invention. Expressions in the singular number include a plural expression unless the context clearly indicates otherwise. Present . In the specification, "to include", "be provided with" or "gajida" and the term is carried out the feature, step, component, or to a combination thereof geotyiji to specify the existence, the one or more other features or steps, configurations it should be understood that the element or the presence or possibility of a combination of these things does not rule out in advance.

Invention will be described in can fall various changes may illustrate a number of forms that can also take the bars, certain embodiments in detail below. However, this is by no means to restrict the invention to the particular form disclosed, cover all modifications, equivalents, and substitutes included in the spirit and scope of the invention 2019/103317 1> (part 1 '/ 1? 2018/012434

It should be understood.

And according to the following, specific embodiments of the invention is supposed to be more specific for the water absorbent resin composition.

The superabsorbent resin composition according to an embodiment of the invention,

It comprises an acidic group and superabsorbent polymer particles comprising a crosslinked polymer of at least a water-soluble ethylenically unsaturated monomer in the partially neutralized acid groups;

And; the knife acrylate containing ££ 1 shows or an alkali metal salt of

It can contain an organic acid, and silicate-based salt mixture.

Example one such implementation and according to the water absorbent resin composition, an improved deodorant / antibacterial properties than previously known to use a chelating agent and an organic acid, and silicate-based salt mixture comprising a relatively low cost of the seedlings ahsyo or its alkali metal salts It can be expressed. In particular, according to the subsequent experimental results of the inventors, may be suppressed because of a synergistic effect of the above two components, proliferation of bacteria acting as odor components, etc. diapers for very efficient, it is possible to remove the odor accordingly effectively . As a result, it was confirmed that an implementation yehui superabsorbent resin composition This represents a significant improvement deodorant properties.

Also, these components and do not inhibit such stability of the water absorbent resin composition can excellently maintain the example and the water absorbent resin composition basic ability to absorb the one embodiment, the unit also the low cost of the high relatively low, the water absorbent resin composition, economics also it can contribute.

Thus, one embodiment superabsorbent polymer composition, such as various types of diapers

It can be very preferably applied to hygiene.

Hereinafter, one embodiment that will be described more specifically decided for each component for the water absorbent resin composition.

One embodiment the superabsorbent resin composition, for a specific antibacterial / deodorizing effect of,

EDTA chelates or containing an alkali metal salt of the agent and

Comprises an organic acid, and silicate-based salt mixture, the chelating agent contains a chelating agent, for example, to those skilled in the art well-known, it is possible to use the sodium salt (EDTA-2Na) and an amine acid compound of the EDTA, the sodium salt of the particular EDTA It may be preferably used (EDTA-2Na). In addition, ethylenediaminetetraacetic acid, a cycloalkyl acid tetraacetic acid, diethylenetriamine pentaacetic acid, ethylene glycol-bis (aminoethyl ether) - 外 代-tree acetic acid, N- (2-hydroxyethyl) - ethylenediamine - in N, N, NP- tree acid and triethylenetetramine amine selected from the group consisting of ethyl acetate hex compound and, may be used various chelating jereul. FIG.

These chelating agents may be present in the above high water-absorbent resin particles to cause the organic acid, and silicate-based salt mixture with synergistic effect, the result can be an implementation example and to indicate a deodorant / anti-bacterial properties the water absorbent resin composition enhanced.

More specifically, the chelating agent may be an antimicrobial for inhibiting the growth of Proteus mirabilis bacteria to cause a number of growth rate of the bacteria, in particular, odor by acting as an antimicrobial agent. However, despite the proliferation inhibitory effect of the chelating agent, and some bacteria, and the residue, thereby the odor caused by the ammonia. These odors are mainly organic acids and can be removed by a silicate-based salt mixture, and as a result one embodiment the superabsorbent resin composition can exhibit excellent deodorant / antibacterial property by a synergistic effect of the two components.

These chelating agents may be included in an amount of 100 parts by weight of the superabsorbent polymer particles for a unit, 0.1 to 5 parts by weight, or 0.5 to 3 parts by weight, or from 0.9 to 2 parts by weight. The use of such a chelating agent can exhibit can exhibit excellent antibacterial property by appropriately suppress Proteus mirabilis bacteria growth, the antimicrobial properties of the preferable range (CFU / ml) to cause odor. To the element from the Proteus mirabilis sides with ammonia, can be essentially low, control of the ammonia amount to be caused by inhibiting the growth of bacteria. Thus, one embodiment and may exhibit excellent water absorbent resin composition antimicrobial / deodorizing properties. However, when the content of the chelating agent is too high, it is not preferable or removed to beneficial bacteria in the human body, it may cause a high stability or decrease the absorption properties of the water absorbent resin decreases.

On the other hand, illustrating one implementation of the superabsorbent resin composition also comprises an organic acid, and silicate-based salt mixture. These organic acids and can be present in the silicate salt, too high water-absorbent resin particles.

The silicate salt may be in a salt form, the cation of the silicate anion is an ionic bond and the alkali or alkaline earth metal, can be present in a particle state. The silicate salt particles is 150 / more than to 600 / M particle size of less than 2019/103317 1 »(1 ^ 1 {2018/012434

It can contain particles having about 80 to about 98% by weight, or from about 90 to about 99% by weight, or from about 92 to about 99.3% by weight.

In addition, the silicate salt and a mixed organic acid and the water-absorbent resin particles

600 / ^ 1 or less particle size, or particle state having 150) to 600! In may be present.

As the organic acid and silicate salt has a particle state and particle size distribution as described above, and is suitably held by the water-absorbent resin particles can be removed efficiently adsorbed to select than the bacteria / odor component and the physical / chemical. As a result, one embodiment and has a water-absorbent resin composition can more exhibit improved antibacterial / deodorizing properties. Furthermore, due to such particulate, superabsorbent polymer and when mixed anti-caking does not result in caking 位 keunan 明) may represent the performance.

The organic acid salts and silicate-based mixture may comprise, based on the total weight thereof, of an organic acid at about 90 to 99.5% by weight, or from about 95 to 99.3% by weight, or from about 97 to 99.0% by weight. Accordingly, the additive and the water-absorbent resin particles saenggilsu the inner and / or large number of the acid point知(加句to the surface. When including these acid points, as well as the adsorption of various offensive odor components physically, of the acid point hydrogen cations田+ can) be achieved is a more effective removal of the odor component by forming a salt in combination with the odor component.

The organic acid is at least one element selected from the group consisting of acid during trick (11), fumaric acid (and 11101, maleic acid (111 6) and lactate night) 2019/103317 1 »(1 ^ 1 {2018/012434

But it can include, without being limited thereto.

On the other hand, the above-described organic acid and silicate-based salt mixture and a water-soluble ethylenically unsaturated monomer polymerized in combination with the water-absorbent resin can be applied to sanitary articles such as diapers.

5 , according to one embodiment of the invention, the organic acid, and silicate-based salt mixture is about 0.5 to about 5 parts by weight, or from about 0.8 to about 5 parts by weight, or from about 1 to about 4 parts by weight per 100 parts by weight of the superabsorbent polymer It can be an amount. When the components are contained too little, and the properties by the use of a deodorant and an organic acid may become insufficient, when included so much, to inhibit the physical properties of the superabsorbent polymer 10, there is a possibility.

The organic acid salts and silicate-based mixture, may be prepared by conventional methods of mixing the organic acid and a silicate salt. This mixture, but may be prepared by pre-mixing these two components, each doelsudo mixed with chelating agent after the manufacture, the superabsorbent resin particles as described below . 15 is.

On the other hand, the above-described chelating agent and, in which the kind of the water-absorbent resin or a method of mixing with the organic acid, and silicate-based salt mixture is subject to the method conventionally used in the art, comprising the high-mixing these components to the water-absorbent resin and the method also is not particularly limited.

20 For example, the superabsorbent resin is a water-soluble ethylenically unsaturated monomer and a polymerization initiator function obtained proceeds to the monomer composition, the thermal polymerization or photopolymerization, including the drying for the gel polymer, pulverizing, and be obtained by the minute surge, need on

Depending can be performed more like a surface cross-linking Nami bonsai assembly process.

For reference, "superabsorbent polymer" herein, including an acid group, depending on the context, and drying and pulverizing the at least partially neutralized with a polymeric water-soluble ethylenically unsaturated monomer cross-linked polymer or the cross-linked polymer of the acidic group-powder ( powder) means a base resin made in the form, or for the cross-linked polymer or the addition of a step for the base resin, for example, through a surface cross-linked, differential reassembly, drying, pulverization, classification, etc. to a state suitable for commercialization both are used to cover.

The water-soluble ethylenically unsaturated monomers that can be used without limitation in the conventional random monomer used for producing the water absorbent resin. There can be used anionic monomers and their salts, non-ionic hydrophilic monomer and an amino group-containing unsaturated monomers and containing one or more monomers selected from the group consisting of quaternary his cargo.

Specifically, the (meth) acrylic acid, maleic anhydride, fumaric acid, crotonic acid, itaconic acid, 2-yl-acryloyl ethane sulfonic acid, 2-meth yl-acryloyl ethane sulfonic acid, 2- (meth) acrylic 2-one propanoic acid, or a (meth) acrylamide-2-anionic monomers and their salts methylpropanesulfonic acid; (Meth) acrylamide, N- substituted (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, methoxy polyethylene glycol (meth) acrylate or polyethylene glycol ( meta) a hydrophilic monomer containing non-ionic acrylate; and (N, N) - dimethylaminoethyl (meth) acrylate or (N, N) - dimethylaminopropyl (meth) an amino group-containing unsaturated monomer, and 2019 of the acrylamide / 103317 1 »(1 ^ 1 {2018/012434

To its quaternary cargo may be at least one selected from the group consisting of. More preferably acrylic acid or its salt , there to, for example, acrylic acid or its alkali metal salts such as sodium salt can be used, and having excellent physical properties than using such monomer becomes possible to manufacture the water-absorbent resin. The 5 case of using an alkali metal salt of acrylic acid as monomers, acrylic acid

The polymerization initiator used in the polymerization of the water-soluble ethylenically unsaturated monomer is not particularly limited as long as the commonly used for the production of superabsorbent polymer. Specifically, the polymerization initiators according to the polymerization method, or a thermal polymerization initiator

May include an additional thermal polymerization initiator, it occurs a certain amount of heat by radiation, such as UV irradiation, and further a certain amount of heat generated with the progress of the polymerization reaction heat even if the.

The photopolymerization initiator is capable of forming a radical by light such as ultraviolet rays 15 is that the compound can be used without limitation of its construction.

In accordance with one embodiment of the invention, the monomer composition and can be further comprising an internal cross-linking agent as a raw material of the water-absorbent resin. The internal crosslinking agent roneun of one or more functional groups that can react with a water-soluble substituent of the water-soluble ethylenically unsaturated monomer As the crosslinking agent having an ethylenic unsaturated group at least one; Or above 20 may be used a water-soluble substituent and the cross-linking agent the functional groups that can react with more than one formed by the hydrolysis of a water-soluble substituent groups and / or monomers of the monomer. Examples of the internal crosslinking agents, bisacrylamide the number of carbon atoms from 8 to 12, it bis meth acrylamide, of 2 to 10 carbon atoms polyol poly (meth) acrylate or a carbon number of 2 of the to 10 polyol poly (meth) allyl ethers, such as a can be mentioned, more specifically, N, N'- methylene-bis (meth) acrylate, ethylene oxide (meth) acrylate, polyethylene oxy (meth) acrylate, propylene oxy (meth) acrylate, glycerol diacrylate may be used glycerol triacrylate, trimethylolpropane triacrylate, triallylamine, triaryl cyanurate, triallyl isocyanate, polyethylene glycol, diethylene glycol and at least one selected from the group consisting of propylene glycol.

In the method described above produced, and the monomer composition of the water-absorbent resin it may be further comprising an additive of the thickening agent (thickener), a plasticizer, a preservation stabilizer, an antioxidant, etc., if necessary.

The above-mentioned raw materials such as water-soluble ethylenically unsaturated answer dimer, photopolymerization initiator, thermal polymerization initiator, an internal crosslinking agent and the additive to be used can be prepared in the form of a monomer composition solution dissolved in a solvent.

On the other hand, if this method, the same monomer composition, the thermal polymerization or photopolymerization to form a polymer gel-like function and is generally the polymerization method used, there is no particular limitation on the configuration.

Possible Specifically, the polymerization process is divided into a large thermal polymerization and photo polymerization according to the polymerization energy source, in the case of proceeding to the normal thermal polymerization, if may take place in a reactor with a stirring shaft, such as a kneader (kneader), proceed to photopolymerization, the mobile but can take place in a reactor equipped with a conveyor belt, the above-described polymerization method is an example, not limited to the polymerization method doejineun the invention is described above.

In this case the normal function of the water content gel-like polymer obtained in the same way may be from about 40 to about 80% by weight. On the other hand, in the present specification, "water content" means a value in the weight function of the gel polymer in an amount of water which accounts for the entire function gel polymer weight minus the weight of the dry polymer. Specifically, by measuring the weight decrease due to evaporation of water in the polymer in the course of heating up through infrared drying the temperature of the polymer is defined as a calculated value. At this time, the drying condition is at room temperature of about 180 ° after which the temperature was increased to 180 C ° total drying time in such a manner as to maintain in C is set to 20 minutes, including 5 at a temperature ramping up step, to measure the water content.

Next, a drying function, the 4-phase polymer obtained.

At this time, if necessary may be further subjected to a step of coarsely pulverized before drying to increase the efficiency of the drying phase.

At this time, the crusher to be used is limited to the configuration, but, specifically, a vertical cutter (Vertical pulverizer), turbo cutter (jurbo cutter), a turbo grinder (Turbo grinder), rotary cutting mill (Rotary cutter mill), cutting mill (cutter mill), disc mill (disc mill), a piece crusher (Shred crusher), crusher (Crasher), the chopper (chopper) and one-plate type cutting machine including any one selected from the grinding machine the group consisting of (disc cutter) can, but it do doejineun limited to the above example.

The step may be pulverized so that the pulverized to about 2 to about 10mm the particle size of the polymer gel function.

Or pulverized as described above, or that is, the polymerization going through the crude crushing stage

It performs a drying function for the gel-like polymer in immediately.

Drying of the drying step as long as it is also commonly used in the drying step of the polymer gel-like function and may be used are selected, without limitation of its construction. Specifically, a method such as hot air supply, infrared irradiation, microwave irradiation, or the ultraviolet irradiation may be carried out a drying step. The water content after the drying phase, such a polymer is the number of days from about 0.1 to about 10% by weight.

Next, crush the dried polymer obtained through this drying steps. After the grinding step the resulting polymer powder particle size of from about 150 to about 850_. The mill diameter is used to crush the same specifically, pin mill (pin mill), a hammer mill (hammer mill), screw wheat ( screw mill), a roll mill (roll mill), but be used as the disk mill (mill disc) or the jog mill (jog mill), but is not limited to the invention the above-described example.

And, on the other and such that the milling step after the last commercialized in order to manage the physical properties of the water-absorbent resin powder, may be subjected to a separate step of the classification according to the polymer powder obtained after grinding the grain size. Preferably the particle size of from about 150 to about

And classifying the philtrum 850_ copolymer.

In accordance with one embodiment of the invention, it may further perform the step of surface cross-linking the above-mentioned pulverization or classification polymer. At this time, the surface cross-linking agent, if the compound having the functional group reactive with the polymer is not limited in its construction. Examples of such surface cross-linking agent, there may be mentioned polyhydric alcohol compound, a polyvalent alkylene carbonate compound or polyvalent epoxy compound or the like.

And obtained by the process such as the water absorbent resin particles with the above-described

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Evenly mixing the chelating agent and the organic acid, and silicate-based salt mixture can be obtained a high water-absorbent resin composition according to the embodiment of the invention.

The solution method of mixing is not particularly limited, for example, and comprises a water-absorbent resin particles and a chelating agent, into the organic acid and the silicate salt to the reactor mix and high chelating agent, an organic acid and silicate salt particles to the water-absorbent resin and to a reactor, such as a method of spraying, the mixer is continuously operated at a water-absorbent resin and the chelating agent, an organic acid and silicate salt particles, a method of mixing by continuously fed, after pre-mixing the organic acid and a silicate salt and a water-absorbent resin and the chelating agent , and the like can be used for mixing were continuously supplied to a pre-mixed organic acid and a silicate salt mixture.

On the other hand, in the high embodiment implementing one above the water absorbent resin composition, wherein said superabsorbent polymer particles have a residual iron ions derived from a monomer composition including the water-soluble ethylenically unsaturated monomers and / or initiator to the total monomers 3ppmw or less, or 0.1
content as it can be better contained.

And during the manufacturing process of the absorbent resin particles it is used and a polymerization initiator such as a conventional redox initiator, an iron ion derived from such an initiator may be left in the monomers and / or super-absorbent resin particles. However, such iron ions and water-absorbent resin It may lead to physical property degradation of the composition, of one embodiment the composition has a residual amount of the iron ions can be reduced, as the included chelating jereul a result, one embodiment the superabsorbent resin composition can exhibit excellent physical properties than. The superabsorbent resin composition according to the embodiment of the invention obtained as described above can exhibit excellent antibacterial / deodorizing effect and the basic absorption characteristics.

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It is supposed hereinafter, a concrete embodiment of the invention, described more operations and effects of the invention. However, this embodiment does not become only and, thus assumes the scope of the invention as set forth by examples of the invention.

Example: Preparation of high water absorbent resin composition

Example 1

Based on 100 parts by weight of acrylic acid monomer, caustic soda
and 38.9 parts by weight of water and 103.9 parts by weight were mixed, and a thermal polymerization initiator is sodium persulfate, 0.1 part by weight, the photopolymerization initiator to the mixture of diphenyl (2, 4, 6-trimethylbenzoyl) -phosphine oxide was prepared from 0.01 parts by weight of crosslinking agent of the housing stage the composition by the addition of polyethylene glycol diacrylate 0.3 parts by weight.

The monomer composition of the internal temperature to 80 X: remains is a mercury
lamp as a light source
UV having an intensity irradiation device 243 furnace on the polymerization belt of a continuous belt polymerization reactor provided in the upper & ¾ main surface flowing at a rate of four for 1 minute irradiation with ultraviolet light , which was in progress the polymerization reaction in two minutes matte original state further.

Gel type polymeric sheet coming out of the polymerization is complete, the crude was ground through the mitt cheupeo then take advantage of the shredder cutter type cutting the primary. Since 1801: through a hot-air drier for 30 minutes at a temperature of the dry later, crushing by using a rotary mixer, and

The classifier 180, to 850_ prepare a base resin.

Wherein the base resin of ethylene glycol diglycidyl In the polyepoxide 0.1 wt% (ethylene glycol diglycidyl epoxide) in and uniformly mixed and then the process proceeds to the surface treatment reaction for 2-1 hours to give a water-absorbent resin.

The high relative to 100 parts by weight of water-absorbent resin, a sodium salt of EDm (EDTA-2Na)

1 Insert parts by weight, 99% by weight of citric acid is 1.01 part by weight of the mixture and sodium metasilicate salt of 1% by weight of the mixture, using a Ploughshare blender was subjected to 500rpm, 2 bungan stirring. This produced a high water absorbent resin composition It was as in example 1.

Example 2

Embodiment and in the same manner as in Example 1 to prepare a water-absorbent resin.

The high relative to the water-absorbent resin of 100 parts by weight, into the sodium salt (EDTA-2Na) 1 part by weight of EDm, a 99 wt% citric acid mixed with sodium metasilicate salt of 1% by weight of the mixture 2.02 parts by weight, Ploughshare blender for the 500rpm, 2 bungan stirring was performed using this way was prepared the superabsorbent Souza composition in example 2.

Example 3

Embodiment and in the same manner as in Example 1 to prepare a water-absorbent resin.

The high relative to the water-absorbent resin of 100 parts by weight, into the sodium salt (EDTA-2Na) 1 part by weight of EEVTA, a 99 wt% citric acid mixed with sodium metasilicate salt of 1% by weight of the mixture 3.03 parts by weight, Ploughshare blender use was subjected to 500rpm, 2 bungan stirring. The thus prepared high-water absorbent resin composition of Example 3

It was.

Comparative Example 1

Embodiment and in the same manner as in Example 1 to prepare a water-absorbent resin. These super-absorbent resin itself was, as a comparative example 1.

Comparative Example 2

Embodiment and in the same manner as in Example 1 to prepare a water-absorbent resin.

The high water-absorbent resin with respect to 100 parts by weight, placed in a 99 wt% citric acid mixed with sodium metasilicate salt of 1% by weight, 1.01 parts by weight of the mixture,

Using a Ploughshare blender was subjected to 500rpm, 2 bungan stirred. The thus prepared gotop water-based resin composition was determined as Comparative Example 2.

Comparative Example 3

Embodiment and in the same manner as in Example 1 to prepare a water-absorbent resin.

The high relative to 100 parts by weight of a water-absorbent resin, put into a 99 wt% citric acid mixed with sodium metasilicate salt of 1% by weight of the mixture 2.02 parts by weight, using a Ploughshare blender was subjected to 500rpm, 2 bungan stirring. Thus prepared It was a high water absorbent resin composition in Comparative example 3.

Comparative Example 4

Embodiment and in the same manner as in Example 1 to prepare a water-absorbent resin.

The high relative to 100 parts by weight of a water-absorbent resin, put into a 99 wt% citric acid mixed with sodium metasilicate salt of 1% by weight of the mixture 3.03 parts by weight, using a Ploughshare blender was subjected to 500rpm, 2 bungan stirring. Thus prepared It was a high water absorbent resin composition in Comparative example 4.

Comparative Example 5

Embodiment and in the same manner as in Example 1 to prepare a water-absorbent resin.

The high relative to 100 parts by weight of a water-absorbent resin, into sodium salt (EDTA-2Na) 1 parts by weight of EEVTA, using a Ploughshare blender was subjected to 500rpm, 2 bungan stirring this way the production of the superabsorbent resin composition in Comparative Example 5 It was.

Superabsorbent resin property evaluation

Example 1 to 3 and Comparative Examples 1 to 5 were measured and the physical properties by the following methods for the water absorbent resin composition of the results are shown in Table 1.

(1) antimicrobial / deodorizing performance test

Proteus mirabillis (ATCC 29906) is the artificial urine inoculated with 50ml 390000CFU / ml

35 ° at C oven and allowed to incubate for 12 hours. The artificial urine and artificial urine after 12 hours and incubated as a control, and well washed with brine 150ml of appointed (Colony Forming Unit) CFU euljeuk lines were in the control group through which the physical properties.

Examples or Comparative Examples godeup water-based resin composition 2g the Proteus mirabillis (ATCC 29906) is inoculated into an artificial urine 390000CFU / ml 5 was added to the 0ml, it 35 ° and incubated for 12 hours at C oven. The artificial urine 12 hours after incubation of 150: 111 to well washed with brine
. As a result, through, and / rating calculated for each of Examples and Comparative Examples the antimicrobial / deodorizing properties.

（2）보수능（CRC, Centrifugal Retention Capacity）

Measurement of the beam SAT was based on the ED ANA method WSP 241.3. The superabsorbent resin composition is prepared into a 0.2 g sample to the tea bag to settle for 30 minutes of 0.9% salt solution. Since then dehydrated 3 minutes at a centrifugal force of 250G (gravity) to measure the amount of saline solution absorbed.

TABLE 1

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Referring to Table 1, the embodiment of the superabsorbent resin composition was observed, and refers to the comparative examples while maintaining the contrast at least equal to the level of the beam SAT, improved antibacterial / deodorizing properties despite the addition of functional additives .

[Claims]
[Claim 1]
It comprises an acidic group and superabsorbent polymer particles comprising a crosslinked polymer of at least a water-soluble ethylenically unsaturated monomer in the partially neutralized acid groups;

A chelating agent comprising an alkali metal salt; and

Organic acid and silicate-based superabsorbent resin composition comprising a mixture of salts.

[Claim 2]

The method of claim 1 wherein the chelating agent is
sodium salt (EDTA-2Na), ethylenediaminetetraacetic acid, a cycloalkyl acid tetraacetic acid, diethylenetriamine pentaacetic acid, ethylene glycol-bis (aminoethyl ether) -代的' -tree acetate,射- (2 - hydroxyethyl) - ethylenediamine -此'- ethyl tree and tree godeup water-based resin composition containing at least one selected from the group consisting of ethylene tetraamine hex acetate.

[Claim 3]

The method of claim 1 wherein the chelating agent is a superabsorbent resin composition comprising the high parts, 0.1 to 5 parts by weight based on 100 parts by weight of absorbent resin particles.

[Claim 4]

The method of claim 1 wherein the organic acid during trick acid ((出1 301 (1), fumaric acid (and 111 jo 1 (1), maleic acid (111 6 ) and acid (from 1止greater than (1) the group consisting of 2019/103317 1 »(1 ^ 1 {2018/012434

Including the selected one or more, the superabsorbent resin composition.

[5.]

The method of claim 1, wherein the silicate salt is a superabsorbent polymer composition comprising a salt of a silicate anion and the alkali metal or the cation of the alkaline earth metal bond.

[Claim 6]

According to claim 1, wherein the organic acid and the silicate-based, based on the total weight of the salt mixture, the superabsorbent resin composition comprising an organic acid in 90 to 99.5% by weight on a.

[7.]

The method of claim 1 wherein the organic acid salt and the silicate-based mixture and the water absorbent resin composition which comprises the parts and 0.5 to 5 parts by weight based on 100 parts by weight of absorbent resin particles.

[8.]

The method of claim 1 wherein the superabsorbent polymer particles gorop water-based resin composition further comprises a cup-derived ryucheol ions from a monomer composition including the water-soluble ethylenically unsaturated monomer and an initiator in an amount up to 3ppmw.

[Claim 9]

() 2019/103317 1 »(: 1/1 (1 male 018/012434

Claim 1 to hygiene products, including any one of the superabsorbent resin composition of claim 8.