Nof Corporation

Nippon Oil Fats Co., Ltd.

Hiroshi Okada

Shuji Suyama

Masaru Matsushima

Hideyo Ishigaki

Tomoyuki Nakamura

Yasumasa Watanabe

Mitsukuni Kato

Tooru Nishikawa

Jun Takada

A hydroxyl-modified ethylene-&#x3b1;-olefin copolymer with excellent coating properties and adhesion properties are produced by heating a mixture containing 100 parts by weight of an ethylene-&#x3b1;-olefin copolymer and 0.1 to 20 parts by weight of a peroxide having a hydroperoxy group. The heating temperature is adjusted within a range from the 10-hour half-life temperature to the 1-minute half-life temperature of the peroxide.

Method for producing hydroxyl-modified ethylene-&#x3b1;-olefin copolymer

A 1-cyclohexyl-1-methylethylperoxy carbonate represented by the formula: ##STR1## (wherein n.sub.1 stands for 1 or 2 and, when n.sub.1 is 1, R.sub.1 stands for an alkyl group of up to 14 carbon atoms, an aralkyl group of up to 14 carbon atoms, an alkoxyalkyl group of up to 14 carbon atoms, a cycloalkyl group of up to 14 carbon atoms, or an aryl group of up to 14 carbon atoms, and when n.sub.1 is 2, R.sub.1 stands for an alkylene group of up to 16 carbon atoms, an aralkylene group of up to 16 carbon atoms, an oxaalkylene group of up to 16 carbon atoms, a cycloalkylene group of up to 16 carbon atoms, or a phenylene group of up to 16 carbon atoms) is a novel compound. It is produced by causing a chloroformate represented by the formula: ##STR2## (wherein n.sub.2 has the same meaning as n.sub.1 in the preceding formula) to react with 1-cyclohexyl-1-methylethylhydroperoxide. It is useful as a polymerization initiator for a vinyl monomer, a curing agent for an unsaturated polyester resin and a cross-linking agent for a polymer.

1-cyclohexyl-1-methylethylperoxy carbonate, method for production

A composition for cross linking an ethylene polymer comprises an organic peroxide as a cross linking agent and a compound represented by the formula: ##STR1## wherein R stands for a hydrogen atom or one member selected from the class consisting of alkyl groups of 1 to 9 carbon atoms and n is an integer of 2 or 3. A method for cross linking the ethylene type polymer uses the composition mentioned above. An electric power cable comprises a core coated with resinous layers produced by the method described above.

Ethylene polymer crosslinking composition

High-purity 1,1,3,3-tetramethylbutyl hydroperoxide can be easily and safely produced without the formation of dangerous acetone peroxide, by the reaction of neopentyldimethylcarbinol with hydrogen peroxide in the presence of sulfuric acid.

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Tokoname, Japan

Hiroshi Okada