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公开(公告)号：CA2273737A1
公开(公告)日：1999-12-08
申请号：CA2273737
申请日：1999-06-07
Applicant: SHOWA DENKO KK
Inventor： HAMAZOE OSAMU , KIRIKOSHI HIROSHI , TAKEDA TADASHI , ARAI TOSHIHIRO
IPC: C08K5/3492
Abstract: The object is to provide a flame retardant polyamide resin composition having excellent tensile elongation at break and excellent properties for use as a hinge. A flame retardant polyamide resin composition is provided, which comprises 100 parts by weight of a polyamide resin mixture consisting of a first aliphatic polyamide and at least one polyamide selected from the group consisting of a second aliphatic polyamide, which differs from the first aliphatic polyamide, and a semi-aromatic polyamide, and from 0.4 to 20 parts by weight of a melamine cyanurate-type flame retarder.
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公开(公告)号：JPH11349809A
公开(公告)日：1999-12-21
申请号：JP15918698
申请日：1998-06-08
Applicant: SHOWA DENKO KK
Inventor： TAKEDA TADASHI , ARAI TOSHIHIRO , HAMAZOE OSAMU , KIRIKOSHI HIROSHI
IPC: C08K5/3477 , C08L77/02 , C08L77/06
Abstract: PROBLEM TO BE SOLVED: To obtain a composition excellent in tensile elongation at break by compounding respective specific amounts of a polyamide resin mixture composed of a specific weight ratio of polyamide 66, polyamide 6 and one or more of polyamides 66-6, and a melamine cyanurate flame retardant. SOLUTION: A polyamide resin composition contains: 100 pts.wt. of polyamide mixture composed of 20-85 wt.% polyamide 66 and 80-15 wt.% polyamide 6 or one or more of polyamides 66-6; and 0.4-20 pts.wt. of melamine cyanurate flame retardant having an average particle size of not more than 100 μm, and the tensile elongation at break of the resin composition is not less than 100%. Further, if necessary, the resin composition is combined with a stabilizer to oxygen, light, ultraviolet rays and the like, a lubricant, an antielectrostatic, a reinforcing agent and the like. The melamine cyanurate flame retardants include melamine cyanurate, mono(β-cyanoethyl)isocyanurate, bis(β-cyanoethyl) isocyanurate, tris(β-cyanoethyl)isocyanurate, and the like.
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公开(公告)号：JPH06234900A
公开(公告)日：1994-08-23
申请号：JP2280493
申请日：1993-02-10
Applicant: SHOWA DENKO KK
Inventor： TOMITA HIROYUKI , TAKEDA TADASHI , MATSUOKA KUMIKO , MARUYAMA SATOSHI
IPC: C08G18/38 , C08G18/30 , C08K7/14 , C08L25/08 , C08L33/24 , C08L35/00 , C08L73/00 , C08L75/00 , C08L75/04 , C08L77/00
Abstract: PURPOSE:To obtain a glass fiber-reinforced polyamide composition which can be used for motor car parts because of its excellent resistances to calcium chloride, heat and shock, by blending polyamide resin, styrene-maleimide copolymer, thiourethane resin and glass fiber in a specific proportion. CONSTITUTION:The composition comprises (A) 100 pts.wt. polyamide resin such as nylon 6, (B) 10 to 100 pts.wt., preferably 20 to 80 pts.wt. styrene- maleimide copolymer which is prepared by grafting a carboxylic acid or its derivative to a copolymer of a styrene monomer (styrene or alpha-methylstyrene) and a maleimide monomer (maleimide or N-phenylmaleimide), (C) 1 to 30, preferably 3 to 25 pts.wt. thiourethane resin having repeating units of the formula (Ar is phenylene) and more than 3,500, preferably more than 6,000 molecular weight, and (D) 10 to 125 pts.wt. glass fiber.
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公开(公告)号：JPH06145512A
公开(公告)日：1994-05-24
申请号：JP30400492
申请日：1992-11-13
Applicant: SHOWA DENKO KK
Inventor： TAKEDA TADASHI , TOMITA HIROYUKI , MATSUOKA KUMIKO , MARUYAMA SATOSHI
Abstract: PURPOSE:To obtain the title composition excellent in impact and heat resistances and having resistance to calcium chloride. CONSTITUTION:The composition comprises as the components 100 pts.wt. polyamide resin, 1-30 pts.wt. thiourethane resin made up of repeating units represented by the formula -CO-NH-CH2-Ar-CH2-NH-CO-S-CH2CH2-S-CH2CH2-S- wherein Ar is phenylene and having a number-average mol.wt. of 3,500 or higher, and 10-125 pts.wt. glass fibers.
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公开(公告)号：JPH0688022A
公开(公告)日：1994-03-29
申请号：JP23739492
申请日：1992-09-04
Applicant: SHOWA DENKO KK
Inventor： MATSUOKA KUMIKO , TAKEDA TADASHI , MARUYAMA SATOSHI
Abstract: PURPOSE:To obtain a polyamide resin composition having high mechanical strength and excellent heat, water and solvent resistances by mixing a polyamide resin with an inorganic filler surface-treated with a specified compound. CONSTITUTION:20-98 pts.wt. polyamide resin is mixed with 80-2 pts.wt. inorganic filler surface-treated with a succinic acid or anhydride compound of formula I or II (wherein R1, R2 and R3 are each 1-10C alkyl; R4 is H or CH3; and n is 1-15) to obtain a polyamide resin composition. This composition has excellent heat resistance, durability and solvent resistance as well as high mechanically strengths and therefore is useful in, e.g. the field of automobile parts.
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Patent Agency Ranking
公开(公告)号：JPH0617397B2
公开(公告)日：1994-03-09
申请号：JP24067887
申请日：1987-09-28
Applicant: SHOWA DENKO KK
Inventor： TAKEDA TADASHI , MATSUOKA MASAMI
IPC: C08F8/42
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公开(公告)号：JPH05345854A
公开(公告)日：1993-12-27
申请号：JP15685192
申请日：1992-06-16
Applicant: SHOWA DENKO KK
Inventor： TAKEDA TADASHI , ABE KAZUTO , KIRIKOSHI HIROSHI , MARUYAMA SATOSHI
Abstract: PURPOSE:To provide a polyamide resin composition comprising a polyamide resin and a specific thiourethane resin in a specified ratio, excellent in rigidity, impact resistance and heat resistance, and useful for automotive parts, etc. CONSTITUTION:This resin composition comprises (A) 45-98wt.% of a polyamide resin such as nylon 6 and (B) 2-55wt.% of a thiourethane resin comprising repeating units of the formula (Ar is phenylene) and having a number-average mol.wt. of >=3500.
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公开(公告)号：JPH05177655A
公开(公告)日：1993-07-20
申请号：JP22914091
申请日：1991-09-09
Applicant: SHOWA DENKO KK
Inventor： TAKEDA TADASHI , KIRIKOSHI HIROSHI , NAKAMURA JUNICHI
Abstract: PURPOSE:To obtain a polyamide resin pellet characterized by that a molding cycle is made short and efficient because a weighing time at the time of injection molding is short and the irregularity thereof is reduced and weighing stability is excellent as well as releasability is good and a cooling time is short, capable of being stably produced for a long time because a mold deposit phenomenon can be suppressed and having high fire retardance. CONSTITUTION:100 pts.wt. of a polyamide resin and 1-20 pts.wt. of melamine cyanurate are mixed and kneaded to obtain a resin pellet main body. 0.01-1.0 pts.wt. of a metal salt of higher fatty acid and 0.01-1.0 pts.wt. of higher fatty acid or 0.01-1.0 pts.wt. of a metal salt of higher fatty acid and 0.01-1.0 pts.wt. of higher fatty acid ester are bonded to the surface of the polyamide resin pellet main body.
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公开(公告)号：JPH03207758A
公开(公告)日：1991-09-11
申请号：JP155090
申请日：1990-01-10
Applicant: SHOWA DENKO KK
Inventor： TAKEDA TADASHI , KIRIKOSHI HIROSHI , NAKAMURA JUNICHI
Abstract: PURPOSE:To obtain the title composition suitable for parts of automobile, having excellent low-temperature impact resistance and flexibility, low temperature dependence of flexibility and excellent surface smoothness by blending a polyamide resin with a blend of a specific modified olefin-based multi-copolymer and modified ethylene-based copolymer. CONSTITUTION:(A) 50-95wt.% polyamide resin (e.g. nylon 6) comprising a ring- opening polymer of lactam is blended with (B) 60-5wt.% blend consisting of B1:1-99wt.% modified olefin-based multi-copolymer prepared by reacting an olefin-based multi-copolymer containing specific amounts of alpha,beta-ethylenically unsaturated nically carboxylic acid ester unit and dibasic unsaturated carboxylic acid (derivative) unit with an unsaturated carboxylic acid (derivative) and B2: 99-1wt.% modified ethylene-based copolymer prepared by reacting an ethylene- based copolymer with an unsaturated carboxylic acid (derivative). The ratio of melt viscosity of the components A and B is 0.05-1.
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公开(公告)号：JPS63258906A
公开(公告)日：1988-10-26
申请号：JP9203387
申请日：1987-04-16
Applicant: SHOWA DENKO KK
Inventor： TAKEDA TADASHI , MATSUOKA MASAMI
IPC: C08F8/42
Abstract: PURPOSE:To readily and quickly produce a modified copolymer excellent in its solvent resistance, heat resistance and mechanical strength, by reacting a specific amt. of a specified silane coupling agent with an ethylenic copolymer contg. as its copolymerization component a monomer having a polar group. CONSTITUTION:An ethylenic copolymer comprising at least ethylene and an epoxy compd. having one or more epoxy groups and one double bond is reacted with a silane coupling agent of formula (R' is 1-20C polar group contg. one or more of amino, epoxy, halogeno, mercapto, isocyanato and sulfonylazido; R'' is 1-20C alkyl or alkoxy; n is 1, 2 or 3) (e.g., gamma-aminopropyltrimethoxysilane) at an amt. of 0.01-2.0 times moles the epoxy groups of the ethylenic copolymer. The modified copolymer thus produced is used for manufacturing parts for automobiles or various machines, pipes, etc.
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