Toyota Jidosha Kabushiki Kaisha

Other

Japan Polychem Corporation

Shin-Etsu Chemical Co., Ltd.

Kabushiki Kaisha Toyota Jidoshokki

Kabushiki Kaisha Toyota Chuo Kenkyusho

Sumitomo Chemical Company, Limited

Mitsui Chemicals, Inc.

Dsm IP Assets B.v.

Sanyo Chemical Industries, Ltd.

Grand Polymer Co., Ltd.

Takayuki Nagai

Hisayuki Iwai

Masatoshi Matsuda

Takao Nomura

Yukihito Zanka

Mitsuhiro Murayama

Masaaki Yamaya

Makoto Kato

Takeyoshi Nishio

Yuji Fujita

Koichi Higuchi

Ikunori Sakai

Susumu Kanzaki

Hironari Sano

Kenzo Fukumori

Hiroki Sato

Toshio Watanabe

Osamu Kito

Ikuo Tsutsumi

Keisuke Ohnishi

Koichi Chigita

Yasumitsu Isobe

Izumi Ishii

Motoo Fukushima

Mikio Hashimoto

Toshihisa Shimo

Mitsuji Tsuji

Toshiro Kondo

Masaru Nakagawa

Hiromitsu Tanaka

Hirotaka Okamoto

Mitsumasa Matsushita

Hirofumi Inoue

Yoshihiro Sobajima

Kenichi Ohkawa

Yutaka Obata

Kazumasa Okumura

Osamu Watanabe

Moriyasu Shimojo

Koki Hirano

Nobuya Kawamura

Kiyoji Takagi

Yasuhisa Sugita

Tetsuya Oda

Hisashi Muramatsu

Morio Tsunoda

Yuya Maruyama

Kunio Iwanami

Kenichi Hayashida

Masami Suzuki

Hisatoshi Komori

Hiromitsu Nakayama

Takeshi Sekito

Kazuhiro Doi

Akira Kobayashi

Yasutoshi Jagawa

Makoto Katsukawa

Tomokazu Takai

Hiroki Satoh

Takayuki Hirai

Toshio Niimi

Masaaki c/o Silicone-Electronics Mat Research Ctr Yamaya

Koichi c/o Silicone-Electronics Mat Research Ctr Higuchi

Toshio Watabe

Hiroyasu Hiramatsu

Yosihide Katagiri

A fiber-reinforced resin composition includes a polyamide resin and a polyolefin resin, and when one resin between the polyamide resin and the polyolefin resin is set as a first resin, and the other resin is set as a second resin, the composition has a sea-island structure including a continuous phase C consisting of the first resin and a dispersed phase c consisting of the second resin dispersed in the continuous phase C, and in a resin phase separation cross-sectional structure, a total of cross-sectional areas of dispersed phases having a cross-sectional area equal to or smaller than an average cross-sectional area of the reinforcing fiber is 20% or less with respect to a total of cross-sectional areas of all dispersed phases.

Fiber-reinforced resin composition and method of producing the same

A plastic article is provided wherein a plastic substrate is coated with multiple resin layers including a primer layer comprising a polymer having a UV-absorptive functional group incorporated therein and a weather resistant hardcoat layer comprising a reaction product of alkoxysilyl-containing benzophenone and/or a hydrolyzate thereof.

Plastic article for automotive glazing

A resin composite material includes: fine graphite particles including plate-like graphite particles, an aromatic vinyl copolymer which is adsorbed on the plate-like graphite particles, and which contains a vinyl aromatic monomer unit represented by the following formula (1):&#x2014;(CH&#x2014;CHX)&#x2014;&#x2003;&#x2003;(1)

Resin composite material

Thermoplastic resin composition containing 18-80 weight % of a polyamide 6 resin with specific viscosity number and specific ratio of terminal carboxyl groups content to terminal amino groups content (component (A)); 5-25 weight % of a hydrogenated product of a block copolymer having a vinyl aromatic compound polymer block and a conjugated diene compound polymer block (component (B)); 3-15 weight % of a graft-modified hydrogenated product of such block copolymer (component (C)), said hydrogenated product being graft-modified with maleic anhydride in an amount of 2.6-5.0 weight % based on 100 weight % of said graft-modified hydrogenated product; 1-5 weight % conductive carbon black with specific BET specific surface area and specific DBP oil absorption (component (D)); 10-30 weight % talc having a specific average particle diameter (component (E)); 0.1-2 weight % of a phosphonite compound (component (F)); 0.5-5 weight % of an ethylene-vinyl alcohol resin (component (G)); 0-1 weight % of a pentaerythritol based phosphite (component (H)).

Thermoplastic resin composition for producing automobile exterior parts

A curable composition comprises (A) an organic/inorganic composite in which a hydrolyzable silyl group and/or SiOH group-containing polysiloxane is bonded to a vinyl polymer through a Si&#x2014;C bond, and (B) an organic UV absorber having a molecular weight of at least 500 and a weight retentivity of at least 95% when held at 150&#xb0; C. for 24 hours in an open state. The curable composition is coated and cured to an article, whereby the article is endowed with satisfactory weathering resistance while minimizing coloration or degradation.

Curable composition and coated article

A polyolefin composite material comprising a polyolefin-based resin, an onium-modified low molecular weight polyolefin-based resin containing an organic onium group as a functional group and having a number average molecular weight of 500 to 30,000, and a layered clay mineral.

Polyolefin composite material, method for producing same, and formed product thereof

The present invention provides a modifier for resins which comprises a dispersant (I) or a coatability improver (II) comprising a modified polyolefin (A) and a filler in combination, the modified polyolefin (A) containing a hydrophobic group comprising a polyolefin (a) having a number average molecular weight of 1,500 to 100,000 and 0.2 to 10 double bonds per 1,000 carbons at the molecular terminus and/or within the molecule, and a hydrophilic group containing at least one onium base (b), and a number average molecular weight per (b) being 750 to 50,000.

Dispersant or coatability improver

A polypropylene resin composition comprises (A) (a-1) a specific crystalline propylene/ethylene block copolymer or (a-3) a polymer mixture comprising the (a-1) and (a-2) a specific crystalline propylene-homopolymer in specific ratio, in an amount of 5 to 56% by weight, (B) a hydroxyl group-containing polypropylene having an intrinsic viscosity [&#x3b7;] of 0.8 to 2.0 dl/g and a melting point of 150 to 168&#xb0; C., in an amount of 10 to 45% by weight, (C) a copolymer rubber of ethylene and an &#x3b1;-olefin having a melt flow rate (ASTM D-1238, 230&#xb0; C., load of 2160 g) of 0.5 to 15 g/10 min, in an amount of 18 to 25% by weight, (D) a hydrogenation product of a block copolymer containing a polymer block of a monovinyl-substituted aromatic hydrocarbon compound and a polymer block of a conjugated diene compound, in an amount of 1 to 10% by weight, and (E) an inorganic filler in an amount of 15 to 25% by weight, the total amount of said components (A), (B), (C), (D) and (E) being 100% by weight, hydroxyl group-containing monomer units derived from the hydroxyl group-containing polypropylene (B) being contained in amounts of 1.3 to 4.0% by weight in 100% by weight of the polypropylene resin composition. The polypropylene resin composition exhibits excellent coating adhesion properties and has excellent processability and mechanical strength with a good balance.

Polypropylene resin compositions

A thermoplastic composition which is obtained by melt-kneading (1) 55 to 75 wt. % crystalline polypropylene resin together with (2) 10 to 30 wt. % elastomer comprising either a rubber containing a vinyl aromatic compound or a mixture thereof with an ethylene/&agr;-olefin random copolymer rubber and (3) 15 to 25 wt. % talc having an average particle diameter of 3 &mgr;m or smaller. The composition satisfies specific requirements with respect to: the long period obtained by X-ray small-angle scattering attributable to the vinyl aromatic-containing rubber in a blend obtained by melt-kneading the ingredients (1) and (2); the shape and diameter of the elastomer particles present near the polypropylene/elastomer interface in the blend; and the difference between the glass transition point of the ingredient (1) and that of the composition attributable to the crystalline polypropylene homopolymer parts. The composition has a satisfactory balance between impact resistance and rigidity and has excellent injection moldability.

Thermoplastic resin composition and injection-molded object thereof

The present invention provides a resin composition high in melting flow, exhibiting good properties, excellent in moldability and shrinkage properties, and hence suitable for automobile exteriors, by including (A) propylene/ethylene block copolymer having a melt flow rate (MFR) of 100 to 200 g/10 min., its propylene homopolymer component having an MFR of 210 to 400 g/10 min. and isotactic pentad fraction of 0.98 or more, and its copolymer portion containing propylene at 65 to 85% by weight; 50 to 70% by weight, (B) ethylene/octene and/or ethylene/butene random copolymer; 10 to 25% by weight, (C) styrene-based hydrogenated block copolymer rubber; 4 to 9% by weight and (D) talc; 16 to 24% by weight.

Propylene resin composition excellent in moldability and physical properties

There are disclosed a polypropylene composition for automotive parts which has a melt index at 230&deg; C. and at 2.16 kgf of at least 30 g/10 minutes and which comprises 55 to 60% by weight of (1) propylene/ethylene block copolymer; 20 to 25% by weight of (2) rubber comprising a styrene/ethylene/propylene/styrene block copolymer and/or a styrene/ethylene/1-butene/styrene block copolymer and an olefinic elastomer; and 18 to 23% by weight of (3) talc, and also an automotive part which comprises the above polypropylene composition.

Polypropylene compositions for automotive parts

There is provided a thermoplastic resin composition comprising the following components (A) to (E): component (A): 50 to 74.7% by weight of a Ziegler-Natta catalyst sequentially polymerized blend of a propylene homopolymer and an ethylene-propylene copolymer, component (B): 5 to 10% by weight of an ethylene-octene random copolymer, component (C): 5 to 10% by weight of an ethylene-butene random copolymer, component (D): 0.3 to 5% by weight of an elastomer.

Thermoplastic polypropylene composition

This invention provides polypropylene resin compositions which have sharply improved balance of physical properties in comparison with the related polypropylene materials, are materials that can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can sharply reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specified ethylene-propylene block copolymer, (B) a specified thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.

Polypropylene resin composition

A crystalline propyleiie block-copolymer composition exhibiting superior flowability upon molding for use in automobile parts, which composition comprises 41 to 71% by weight of a crystalline propylene block-copolymer composed of a propylene homopolymer portion (Fp) and an ethylene/propylene random copolymer portion (Fc) and having an ethylene content of 1 to 10% by weight and a melt flow rate (MFR) of 20 to 100 g/10 min.; 12 to 22% by weight of a first hydrogenated product of a block-copolymer having a relatively smaller stylene content; 2 to 12% by weight of a second hydrogenated product of a block-copolymer having a relatively greater stylene content; and 15 to 25% by weight of talc, wherein the propylene homopolymer portion (Fp) contains 20 to 50% by weight of a low molecular weight propylene homopolymer having an MFR of 400 to 1,000 g/10 min., the average MFR being 100 to 350 g/10 min. and the isotactic pentad fraction being at least 98%, and wherein the said (Fc) has an intrinsic viscosity of 7 dl/g or higher.

Crystalline propylene block-copolymer composition for use in automobile

A thermoplastic resin composition improved in terms of prevention of mold contamination, comprising the following components (A) to (G):

Thermoplastic resin composition improved in terms of prevention of mold

Growing community of inventors

Toyota, Japan

Takayuki Nagai