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US 4,735,998 AGranted
Method for the preparation of a crosslinked organic polymer
AssigneesShin-Etsu Chemical Co., Ltd., Nisshin Chemical Industry Co., Ltd.
InventorsKunio Itoh, Motoo Fukushima
Life of this patent
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Abstract
A crosslinkable copolymer is prepared by the copolymerization of a first ethylenically unsaturated monomer and a second monomer substituted by a vinyl-containing cyclic organosilicon group such as ##STR1## in which Vi and Me denote vinyl and methyl groups, respectively. When such a copolymer is admixed with a crosslinking agent such as an organic peroxide and shaped with heating, the crosslinkable copolymer is crosslinked so that the shaped article is imparted with greatly improved properties.
Claims4
A crosslinkable polymeric composition which comprises:
- (a) an organic polymer having, in a molecule, at least two vinyl-containing cyclic organosilicon groups represented by the general formula ##STR12## in which Vi is a vinyl group, each of the groups denoted by R is, independently from the others, a methyl group or a vinyl group and the subscript n is a number of 1, 2, or 3, bonded to the carbon atoms as the pendant groups of the organic polymer through a divalent linking group selected from the class consisting of:
- --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH--CO;
- CH.sub.2 --OCO--;
- and --C.sub.6 H.sub.4 --;
- and
- (b) a crosslinking agent selected from the class consisting of organic peroxide, organohydrogenpolysiloxane, and a combination of organic peroxide and organohydrogenopolysiloxane.
3 more elements
Dependencies are inferred from the claim text.