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Polyamide Resin Composition, Molded Article Obtained By Molding Same, And Methods For Producing Those

Abstract: The present invention pertains to: a polyamide resin composition obtained by blending, with respect to 100 parts by weight of a polyamide resin (A), 0.01-12 parts by weight of a silicone resin (B) and 0.01-5 parts by weight of a silane coupling agent (C) having at least one functional group selected from the group consisting of isocyanate groups, epoxy groups, and acid anhydride groups; a molded article of said composition; and methods for producing the composition and the molded article. Provided is a polyamide resin composition which, even when the polyamide resin composition contains a silicone resin as an impurity, can suppress detachment of the silicone resin from a molded article obtained through injection molding of said polyamide resin composition and can suppress adhesion of the silicone resin to the surface of a mold during molding, and from which a molded article having excellent mechanical properties can be obtained.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
27 May 2024
Publication Number
24/2024
Publication Type
INA
Invention Field
POLYMER TECHNOLOGY
Status
Email
Parent Application

Applicants

TORAY INDUSTRIES, INC.
1-1, Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo 1038666

Inventors

1. AKITA Masaru
c/o Nagoya Plant, Toray Industries, Inc., 9-1, Oe-cho, Minato-ku, Nagoya-shi, Aichi 4558502
2. MORIYAMA Masayuki
c/o Nagoya Plant, Toray Industries, Inc., 9-1, Oe-cho, Minato-ku, Nagoya-shi, Aichi 4558502
3. FURUKAWA Yuki
c/o Nagoya Plant, Toray Industries, Inc., 9-1, Oe-cho, Minato-ku, Nagoya-shi, Aichi 4558502

Specification

CLAIMS:
A polyamide resin composition compounded with 0.01-12 parts by weight of a
silicone resin (B) and 0.01-5 parts by weight of a silane coupling agent (C) having at
least one functional group selected from the group consisting of an isocyanate group, an
epoxy group, and an acid anhydride group, with respect to 100 parts by weight of a
polyamide resin (A).
2. The polyamide resin composition according to claim 1 further compounded with
0.01 to 5 parts by weight of an ammonium salt (D) comprising a dicarboxylic acid having
a carbon number of 6 to 12 and ammonia.
3. The polyamide resin composition according to claim 1 further compounded with
0.01 to 5 parts by weight of an acid anhydride (E).
4. A molded article obtained by molding a polyamide resin composition according to
any one of claims 1 to 3.
5. A method for producing a polyamide resin composition according to claim 1,
comprising the steps of:
separating a silicone resin layer from a polyamide resin composite in which the
silicone resin layer is formed on a surface of a polyamide resin molded body, so that 0.01
to 12 parts by weight of the silicone resin layer is left with respect to 100 parts by weight
of a polyamide resin;
once making the polyamide resin composite from which the silicone resin layer
has been separated into pellets or chopped pieces of a composition (AB), or leaving the
WE CLAIM:
40
polyamide resin composite from which the silicone resin layer has been separated in a
form as it is; and
melt-kneading 0.01 to 5 parts by weight of a silane coupling agent (C) having at
least one functional group selected from the group consisting of an isocyanate group, an
epoxy group, and an acid anhydride group, to the pellets or chopped pieces, or the form
of the polyamide resin composite as it is.
6. A method for producing a polyamide resin composition according to claim 2,
comprising the steps of:
separating a silicone resin layer from a polyamide resin composite in which the
silicone resin layer is formed on a surface of a polyamide resin molded body, so that 0.01
to 12 parts by weight of the silicone resin layer is left with respect to 100 parts by weight
of a polyamide resin;
once making the polyamide resin composite from which the silicone resin layer
has been separated into pellets or chopped pieces of a composition (AB), or leaving the
polyamide resin composite from which the silicone resin layer has been separated in a
form as it is; and
melt-kneading 0.01 to 5 parts by weight of a silane coupling agent (C) having at
least one functional group selected from the group consisting of an isocyanate group, an
epoxy group, and an acid anhydride group, and 0.01 to 5 parts by weight of an ammonium
salt (D) comprising a dicarboxylic acid having a carbon number of 6 to 12 and ammonia,
to the pellets or chopped pieces, or the form of the polyamide resin composite as it is.
7. A method for producing a polyamide resin composition according to claim 3,
comprising the steps of:
41
separating a silicone resin layer from a polyamide resin composite in which the
silicone resin layer is formed on a surface of a polyamide resin molded body, so that 0.01
to 12 parts by weight of the silicone resin layer is left with respect to 100 parts by weight
of a polyamide resin;
once making the polyamide resin composite from which the silicone resin layer
has been separated into pellets or chopped pieces of a composition (AB), or leaving the
polyamide resin composite from which the silicone resin layer has been separated in a
form as it is; and
melt-kneading 0.01 to 5 parts by weight of a silane coupling agent (C) having at
least one functional group selected from the group consisting of an isocyanate group, an
epoxy group, and an acid anhydride group, and 0.01 to 5 parts by weight of an acid
anhydride (E), to the pellets or chopped pieces, or the form of the polyamide resin
composite as it is.
8. A method for producing a molded article, comprising the steps of:
producing a polyamide resin composition by a method according to any one of
claims 5 to 7; and
molding the polyamide resin composition.

Documents

Application Documents

# Name Date
1 202447040920-STATEMENT OF UNDERTAKING (FORM 3) [27-05-2024(online)].pdf 2024-05-27
2 202447040920-REQUEST FOR EXAMINATION (FORM-18) [27-05-2024(online)].pdf 2024-05-27
3 202447040920-PROOF OF RIGHT [27-05-2024(online)].pdf 2024-05-27
4 202447040920-PRIORITY DOCUMENTS [27-05-2024(online)].pdf 2024-05-27
5 202447040920-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [27-05-2024(online)].pdf 2024-05-27
6 202447040920-FORM 18 [27-05-2024(online)].pdf 2024-05-27
7 202447040920-FORM 1 [27-05-2024(online)].pdf 2024-05-27
8 202447040920-DRAWINGS [27-05-2024(online)].pdf 2024-05-27
9 202447040920-DECLARATION OF INVENTORSHIP (FORM 5) [27-05-2024(online)].pdf 2024-05-27
10 202447040920-COMPLETE SPECIFICATION [27-05-2024(online)].pdf 2024-05-27
11 202447040920-RELEVANT DOCUMENTS [21-06-2024(online)].pdf 2024-06-21
12 202447040920-MARKED COPIES OF AMENDEMENTS [21-06-2024(online)].pdf 2024-06-21
13 202447040920-FORM 13 [21-06-2024(online)].pdf 2024-06-21
14 202447040920-AMMENDED DOCUMENTS [21-06-2024(online)].pdf 2024-06-21
15 202447040920-FORM-26 [09-07-2024(online)].pdf 2024-07-09
16 202447040920-FORM 3 [11-09-2024(online)].pdf 2024-09-11