Sumitomo Chemical Company, Limited

Kohsuke Ohtani

Yoshihiro Nakatsuji

Hiroyuki Sugimoto

Hikaru Shimizu

Yasuhito Ijichi

Kohichi Iketani

Toshio Igarashi

Satoru Funakoshi

Harunori Fujita

Disclosed are a thermoplastic elastomer composition and a composite molded body. Specifically disclosed is a thermoplastic elastomer composition containing the following component (A1), component (B1) and component (C1). Component (A1): 70-90% by weight of a propylene polymer unit (&#x3b1;1) obtained in a first step by polymerizing a monomer mainly composed of propylene, and an ethylene copolymer unit obtained in a second step by copolymerizing ethylene with propylene and/or an &#x3b1;-olefin having 4 or more carbon atoms Component (B1): an ethylene-propylene copolymer rubber having a Mooney viscosity (ML, 125&#xb0; C.) of 20-100 and a weight ratio between the monomer unit derived from ethylene and the monomer unit derived from propylene of from 30/70 to 75/25 Component (C1): an ethylene copolymer as a copolymer of ethylene and an &#x3b1;-olefin having 4 or more carbon atoms.

Thermoplastic elastomer composition and composite molded body

A thermoplastic elastomer is provided that includes a propylene-based resin and an ethylene-&#x3b1;-olefin copolymer rubber, and has a crystallization time at 130&#xb0; C. measured by differential scanning calorimeter (DSC) of from 250 to 1,000 sec. There are also provided a method for producing a molded body, the method including a step of preparing the thermoplastic elastomer composition and a step of injection molding the thermoplastic elastomer composition, and a molded body produced by the method.

Thermoplastic elastomer composition, a method for producing a molded body, and a molded body

A resin composition comprising 3 to 80 parts by weight of a resol type phenolic resin or 3 to 150 parts by weight of a polyhydric phenol, based on 100 parts by weight of a copolymer (A) of an epoxy group-containing monomer and an &#x3b1;-olefin, a powder of the resin composition, a laminate having a layer containing the resin composition, and producing method of the laminate.

Resin composition, laminate and production of laminate

A resin composition comprising 3 to 80 parts by weight of a resol type phenolic resin or 3 to 150 parts by weight of a polyhydric phenol, based on 100 parts by weight of a copolymer (&angst;) of an epoxy group-containing monomer and an &agr;-olefin, a powder of the resin composition, a laminate having a layer containing the resin composition, and producing method of the laminate.

A polymer composition for powder foam molding which comprises (A) a polymer having an epoxy group, (B) a peroxide having a temperature for obtaining a half-life of 10 hours of 100&deg; C. or higher, (C) at least one of quaternary ammonium salts and quaternary phosphonium salts, and (D) a thermally decomposable foaming agent. According to the present invention, the polymer composition for powder foam molding, excellent in storage stability, capable of crosslinking and foaming in a short time, capable of giving a foam having a small compression set, excellent surface texture and little skin lack of hiding, powder of the composition, a foam obtained from the composition, a method for producing the foam, and a molded article comprising the foam.

Polymer composition for powder foam molding, powder thereof, foam obtained therefrom, process for producing the same, and molded article comprising the foam

A polymer composition for powder molding, containing (A) to (E) described below: (A) a peroxide-crosslinkable olefin-based copolymer having a melt flow rate measured under the conditions of a load of 2.16 kgf and a temperature of 190&deg; C. according to JIS K7210 of 1 g/10 min. or more; (B) 0.1 to 10 parts by weight of a peroxide having a temperature for obtaining a half life of 10 hours of 100&deg; C. or more, per 100 parts by weight of (A); (C) 0.1 to 7 parts by weight of a crosslinking aid per 100 parts by weight of (A); (D) 0.1 to 20 parts by weight of a thermal decomposition type foaming agent per 100 parts by weight of (A); and (E) 0.1 to 10 parts by weight of a foaming aid per 100 parts by weight of (A), a powder and foamed article of the polymer composition, a method for producing the foamed article, and a molded article containing the foamed article, and further the polymer composition is excellent in the storage stability of its uncrosslinked composition, and can provide a foamed article having a high expansion ratio and an excellent surface skin, and hardly having a skin lack of hiding.

Polymer composition for power molding, power thereof, foamed object, and process for producing foamed object

An olefin-based thermoplastic elastomer composition for powder molding is described. The olefin-based thermoplastic elastomer composition produces no emission of poisonous gas at incineration. It is hardly whitened on bending and has excellent flexibility.

Thermoplastic olefin elastomer composition for powder molding, powder for powder molding, and molded object

A multi-layer molded article having a skin material layer made of a vinyl chloride resin, a propylene resin core, and an adhesive layer present between the skin material layer and the core, in which the adhesive layer includes (A) a layer having (a) a sublayer containing a polyester resin and an epoxy group-containing ethylene copolymer, which is bonded to the skin material of the vinyl chloride resin, and (b) a sublayer containing at least one copolymer selected from an ethylene copolymer and an epoxy group-containing copolymer, which is bonded to said propylene resin core, or (B) a layer obtained from an ethylene resin composition containing a polybasic carboxylic acid and an epoxy-group containing copolymer (c) which contains ethylene units, unsaturated carboxylic acid glycidyl ester units or unsaturated glycidyl ether units and an ethylenically unsaturated ester units other than the unsaturated carboxylic acid glycidyl ester units.

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Sodegaura, Japan

Kohsuke Ohtani