Abstract: This sheet-like material contains an elastic resin and a non-woven fabric composed of ultrafine fibers having an average single fiber diameter of 0.3-7 µm wherein the elastic resin is a polyurethane resin (D) which contains: as essential constituent monomers a copolymerized polycarbonate diol (A1) which contains a structural unit derived from C3-5 alkane diol (a1) and a structural unit derived from C8-12 alkane diol (a2) the molar ratio of the alkane diol (a2) with respect to the total number of moles of the alkane diol (a1) and the alkane diol (a2) being 50-95 mol%; a polycarbonate diol (A2) containing a structural unit derived from C4-6 alkane diol (a3); an organic diisocyanate (B); and a chain extender (C). The sheet-like material has a soft texture and has durability and wear resistance capable of withstanding practical use.
WE CLAIM:
1. A sheet-like material comprising a nonwoven fabric composed of an ultrafine fiber having an average single fiber diameter of 0 . 3 to 7 |jin; and an elastic resin, wherein the elastic resin is a polyurethane resin (D) which contains: as essential constituent monomers, a copolymerized polycarbonate diol (Al) which contains a structural unit derived from C3-5 alkane diol (al) and a structural unit derived from C8-12 alkane diol (a2) , the molar ratio of the alkanediol (a2) with respect to the total number of moles of the alkanediol (al) and the alkanediol (a2) being 50 to 95 mole%; a polycarbonate diol (A2) containing a structural unit derived from a C4-6 alkane diol (a3) ; an organic diisocyanate (B) ; and a chain extender (C) , and the polyurethane resin (D) satisfies the following conditions (1) to (3) :
(1) The copolymerized polycarbonate diol (Al) has a heat
quantity of fusion (AH) of 40 to 100 J/g, the heat quantity of
fusion (AH) being determined in accordance with a melting point
measuring method provided in JIS K7121-1987.
(2) The polycarbonate diol (A2) has a heat quantity of fusion
(AH) of 0 J/g.
(3) A difference (ATm) in a melting point (Tm) between a mixture
(A12) of the copolymerized polycarbonate diol (Al) with the
polycarbonate diol (A2) and the copolymerized polycarbonate diol (Al) is 1.5°C or lower, the melting point (Tm) being
determined by a melting point measuring method provided in JIS K7121-1987.
2 . The sheet-like material according to claim 1, wherein the mixture (A12) of the copolymerized polycarbonate diol (Al) with
the polycarbonate diol (A2) has a heat quantity of fusion (AH) of 10 to 55 J/g.
3. The sheet-like material according to claim 1, wherein the alkanediol (al) is a linear alkanediol and the alkanediol (a2) is a linear alkanediol.
4 . The sheet-like material according to claim 1 or 2, wherein a mass ratio of the copolymerized polycarbonate diol (Al) with respect to the total mass of the copolymerized polycarbonate diol (Al) and the polycarbonate diol (A2) is 30 to 80 mass%.
5. The sheet-like material according to any one of claims 1 to 3, wherein at least one of the alkanediol (al) and the alkanediol (a2) is a bio-based alkanediol.
6. The sheet-like material according to claim 1, wherein the polyurethane resin (D) is apolyurethane resin (Dl) containing, as an essential constituent monomer, a compound (A3) having a hydrophilic group and an active hydrogen.
| # | Name | Date |
|---|---|---|
| 1 | 201947036182.pdf | 2019-09-09 |
| 2 | 201947036182-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [09-09-2019(online)].pdf | 2019-09-09 |
| 3 | 201947036182-STATEMENT OF UNDERTAKING (FORM 3) [09-09-2019(online)].pdf | 2019-09-09 |
| 4 | 201947036182-PROOF OF RIGHT [09-09-2019(online)].pdf | 2019-09-09 |
| 5 | 201947036182-PRIORITY DOCUMENTS [09-09-2019(online)].pdf | 2019-09-09 |
| 6 | 201947036182-FORM 1 [09-09-2019(online)].pdf | 2019-09-09 |
| 7 | 201947036182-DECLARATION OF INVENTORSHIP (FORM 5) [09-09-2019(online)].pdf | 2019-09-09 |
| 8 | 201947036182-COMPLETE SPECIFICATION [09-09-2019(online)].pdf | 2019-09-09 |
| 9 | 201947036182-CLAIMS UNDER RULE 1 (PROVISIO) OF RULE 20 [09-09-2019(online)].pdf | 2019-09-09 |
| 10 | 201947036182-FORM-26 [10-09-2019(online)].pdf | 2019-09-10 |
| 11 | 201947036182-RELEVANT DOCUMENTS [20-09-2019(online)].pdf | 2019-09-20 |
| 12 | 201947036182-MARKED COPIES OF AMENDEMENTS [20-09-2019(online)].pdf | 2019-09-20 |
| 13 | 201947036182-FORM 13 [20-09-2019(online)].pdf | 2019-09-20 |
| 14 | 201947036182-AMMENDED DOCUMENTS [20-09-2019(online)].pdf | 2019-09-20 |
| 15 | Correspondence by Agent _Form-1 and GPA_23-09-2019.pdf | 2019-09-23 |
| 16 | 201947036182-FORM 3 [19-12-2019(online)].pdf | 2019-12-19 |
| 17 | 201947036182-FORM 3 [12-10-2020(online)].pdf | 2020-10-12 |
| 18 | 201947036182-FORM 18 [26-11-2020(online)].pdf | 2020-11-26 |
| 19 | 201947036182-FORM 3 [02-06-2021(online)].pdf | 2021-06-02 |
| 20 | 201947036182-FER.pdf | 2021-12-27 |
| 21 | 201947036182-OTHERS [23-06-2022(online)].pdf | 2022-06-23 |
| 22 | 201947036182-Information under section 8(2) [23-06-2022(online)].pdf | 2022-06-23 |
| 23 | 201947036182-FORM 3 [23-06-2022(online)].pdf | 2022-06-23 |
| 24 | 201947036182-FER_SER_REPLY [23-06-2022(online)].pdf | 2022-06-23 |
| 25 | 201947036182-CLAIMS [23-06-2022(online)].pdf | 2022-06-23 |
| 26 | 201947036182-PatentCertificate29-06-2022.pdf | 2022-06-29 |
| 27 | 201947036182-IntimationOfGrant29-06-2022.pdf | 2022-06-29 |
| 1 | SearchHistoryE_23-12-2021.pdf |