Mitsubishi Petrochemical Company Limited

Iwao Ishino

Tsutomu Isaka

Takeo Shimada

Akiyoshi Oonishi

Noriyuki Okada

Nobuhiro Usami

Akihiko Ohno

Shuhei Doi

Masaki Saito

Yuji Ozeki

Noriaki Hattori

Yayoi Ishikawa

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

A self-extinguishing polymer composition consisting of 20 to 70% by weight of thermoplastic resin or elastomer (A), 80 to 30% by weight of a hydroxide of aluminum and/or magnesium (B), and a polymeric charge-transfer type complex (C) in an amount of 0.01 to 10 parts by weight relative to 100 parts by weight of (A) and (B).

Self-extinguishing polymer composition

A copolymer of ethylene and an ethylenically .alpha.,.beta.-unsaturated acid halogenated phenyl ester represented by the formula (1): ##STR1## (wherein R is hydrogen or a methyl group, X is a halogen atom, Y is an alkyl group having 4 to 18 carbon atoms, n is 0 or 1, m is an integer of 1 to 5, and l is 0 or an integer of 1 to 4), wherein the halogenated phenyl ester group unit content is about 0.005 to about 10 mol %. This copolymer is excellent in dielectric breakdown characteristics and flexibility, and its excellent performance can be maintained over a long period of time. Thus, it is useful as a superhigh voltage electric wire cable insulative material.

Ethylene copolymer and process for the production thereof

The present invention provides self-extinguishing polymer compositions containing components A, B, and C described below, characterized in that the proportions of components A and B are 90 to 99.99 wt % and 10 to 0.01 wt %, respectively, relative to the total amount of components A and B, and the proportion of component C is 35 to 80 wt % relative to the total amount of components A, B, and C.

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:

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Mie, Japan

Iwao Ishino