Mitsubishi Petrochemical Company Limited

Mitsubishi Chemical Corporation

Sekisui Kaseihin Kogyo Kabushiki Kaisha

Tsutomu Isaka

Shuhei Doi

Iwao Ishino

Takeo Shimada

Takayuki Inoue

Noriyuki Okada

Mitsugu Ishioka

Shinichiro Iida

Akihiko Ohno

Yukihito Zanka

Yutaka Tamura

Seiichiro Hayakawa

Akiyoshi Oonishi

Masaki Saito

Hideki Takahashi

Hideo Shibata

Manabu Nishikawa

Fumie Watari

Nobuhiro Usami

Susumu Akutsu

Mikio Fukumura

Kouichi Sakogawa

Koukichi Komatsuzaki

A resin composition comprising a resin (a) and a conductive filler (b), wherein the resin (a) contains a styrene type thermoplastic elastomer and/or an olefin type thermoplastic elastomer, said resin composition having a volume resistivity of from 10.sup.2 to 10.sup.12 .OMEGA..multidot.cm and a compression set (Cs1) of at most 35% by JIS K6301.

Resin composition, conductive roller prepared by molding the composition

An optical material with a high refractive index comprising a resin which is obtainable by polymerization and curing of a composition comprising the following components (A), (B) and (C):

Method for producing an optical material having a high refractive index

A cured resin for high-fraction lenses is disclosed, which is obtained by polymerizing a composition comprising (A) from 70 to 99 parts by weight of a sulfur-containing aromatic (meth)acrylate represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents an alkylene group; Ar represents an arylene group, an arylene group substituted with a halogen atom except a fluorine atom, an aralkylene group, or an aralkylene group substituted with a halogen atom except a fluorine atom; X represents --O-- or --S--; Y represents --S-- or --SO.sub.2 -- when X is --O--, or Y represents --S--, --SO.sub.2 --, --CO--, an alkylene group, an aralkylene group, an alkylene ether group, an aralkylene ether group, an alkylene thioether group, or an aralkylene thioether group when X is --S--; m and n each represents an integer of from 1 to 5; and p represents 0 or an integer of from 1 to 10, (B) from 1 to 30 parts by weight of at least one mercapto compound selected from (B-1) a compound represented by formula (II): ##STR2## wherein R.sup.6 represents a methylene group or an ethylene group; R.sup.7 represents a hydrocarbon group having from 2 to 15 carbon atoms or an alkyl ether residue having from 2 to 15 carbon atoms; and r represents an integer of from 2 to 6, (B-2) a compound represented by formula (III): ##STR3## wherein W represents ##STR4## wherein s and u each represents an integer of from 1 to 8, and t represents 0 or an integer of 1 or 2, and (B-3) a compound represented by formula (IV): ##STR5## wherein R.sup.8 and R.sup.9 each represents an alkylene group having from 1 to 3 carbon atoms; a and b each represents 0 or 1; and c represents 1 or 2, and (C) up to 50 parts by weight of an ethylenically unsaturated monomer copolymerizable with the compound represened by formula (I). The resin has a high refractive index, high transparency, and excellent impact resistance.

Resin for high-refraction lens containing a sulfur-containing

A silane-crosslinkable copolymer composition comprising: (A) 100 parts by weight of a copolymer prepared by radically polymerizing a polymerizable monomeric mixture consisting essentially of ethylene and at least one ethylenically unsaturated silane compound selected from the group consisting of vinyltrimethoxysilane, vinyltriethoxysilane and .gamma.-methacryloxypropyltrimethoxysilane under a pressure ranging from 1,000 to 4,000 kg/cm.sup.2, and containing said silane compound in an amount of from 0.5 to 2 wt %; (B) from 0.001 to 10 parts by weight of a silanol condensation catalyst; and (C) from 0.01 to 5 parts by weight of a silane compound having a hydrolyzable organic group.

Crosslinked molded product

As a fuel oil additive, an ethylenic copolymer is provided which is derived from:

Fuel oil additive and fuel oil having improved flowability

An ethylene copolymer comprising an ethylene unit and an ester unit selected from ethylenically .alpha.,.beta.-unsaturated acid esters represented by the formula (I) or (II): ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group; and R.sup.2 represents a halogenated alkyl group having from 1 to 15 carbon atoms; ##STR2## wherein R.sup.3 represents a hydrogen atom or a methyl group; and n represents 0 or 1,

Ethylene copolymer

A silane-crosslinkable copolymer composition comprising:

Silane-crosslinkable copolymer composition

A method for producing cross-linked polyethylene resin foams which comprises mixing a polyolefin resin, a blowing agent and, optionally, a surface active agent containing hydroxyl groups or an acid amide compound under pressure, said polyolefin resin containing a cross-linkable ethylene polymer having on the side chains thereof silyl groups which effect cross-linking upon contact with water; extruding the mixture into a low pressure zone where the extrudate is allowed to expand; and bringing the expanded extrudate into contact with a silanol condensing catalyst so that the expanded extrudate is cross-linked on contact with water.

Production of foam

A novel crosslinkable polyethylene resin composition which can be readily crosslinked rapidly is provided. The composition comprises a copolymer consisting essentially of ethylene and a specific unsaturated silane compound having a (meth)acrylate group as a copolymerizable group and a methoxy group as a hydrolyzable group, and an effective amount of a silanol condensation catalyst.

Crosslinkable polyethylene resin composition

A crosslinkable polyethylene resin composition comprises, basically, (A) a copolymer of ethylene and an ethylenically unsaturated silane compound, wherein the content of the ethylenically unsaturated silane compound unit is 0.001 to 15 percent by weight, and (B) a silanol condensation. The copolymer may further comprise a monomer copolymerizable with the ethylene and the ethylenically unsaturated silane compound. The composition may be expandable, further comprising a foaming agent and may further comprise a polyolefin and a filler and may be in the form of a film or sheet.

Crosslinkable polyethylene resin compositions

A novel flame-retardant ethylene polymer composition comprising a copolymer consisting essentially of ethylene and an olefinically unsaturated silane compound such as vinyltriethoxysilane, a silanol condensation catalyst such as dibutyltin dilaurate, and a flame retardant such as a chlorinated polyethylene.

Ethylene polymer compositions that are flame retardant

A laminate film or sheet of crosslinked polyethylene resin has as an outer layer a resin layer comprising a copolymer of ethylene and an ethylenically unsaturated silane compound which has been crosslinked by the contact thereof with moisture and has a gel content of 5 percent or more, and possesses excellent processing stability during its lamination, almost no odor, and, simultaneously, heat resistance and heat sealability.

Laminate films and sheets of crosslinked polyethylene resins

A conductor wire is extrusion coated with a polyethylene resin containing a copolymer comprising predominantly ethylene and an unsaturated silane compound having the formula R Si R'.sub.n Y.sub.3-n, wherein: R is an ethylenically unsaturated hydrocarbyl group or hydrocarbyloxy group; R' is an aliphatic saturated hydrocarbyl group; Y is a hydrolyzable organic group; and n is zero, 1, or 2, thereby to fabricate a coated wire which is then caused to contact water in the presence of a silanol condensation catalyst in a crosslinking process step.

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Ami, Japan

Tsutomu Isaka