Method of crosslinking poly-.alpha.-olefin series resins

Details Method of crosslinking poly-.alpha.-olefin series resins Method of crosslinking poly-.alpha.-olefin series resins

1979-02-27

1981-01-27

Hamrock, William F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525265, 525342, C08F 800, C08F 842, C08C 1900

Patent

active

042476674

ABSTRACT:
A method of crosslinking poly-.alpha.-olefin series resins, comprising the steps of subjecting a resin composition to graft reaction under a volume ratio of oxygen to the resin composition set at less than 0.1 and at temperatures ranging between the thermal decomposition temperature of the radical generating agent and 230.degree. C., said composition comprising at least one kind of poly-.alpha.-olefin series resin of polypropylene series resin, poly(butene-1) series resin or poly(4-methyl pentene-1) series resin; a radical generating agent of dibenzoyl peroxide or t-butyl perbenzoate; and a silane compound having the general formula of RR'SiY.sub.2, where "R" is a monovalent olefinically unsaturated hydrocarbon group or hydrocarbonoxy group, "Y" is an organic group capable of hydrolysis, and "R'" is a monovalent hydrocarbon group except aliphatic unsaturated hydrocarbon groups, or the group "Y" or "R" defined above, and bringing the resultant graft polymer into contact with water so as to cause crosslinking reaction under the action of a silanol condensation catalyst added to the reaction system before or after the graft reaction step.

REFERENCES:
patent: 3646155 (1972-02-01), Scott

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