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US 5,580,925 AGranted
Curable organic polymers containing hydrosilyl groups
AssigneeKanegafuchi Chemical Industry Co., Ltd.
InventorsTakahisa Iwahara, Makato Chiba, Tomoko Takahara, Kazuya Yonezawa
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Abstract
An organic polymer having at least two hydrosilyl groups in a molecule is mixed with an organic polymer having at least one alkenyl group in a molecule and a hydrosilylation catalyst to give a composition. Such composition is rapidly curable, has good depth curability and gives a cured material having good mechanical properties.
Claims26
A curable composition which comprises
- (C) a first organic polymer having at least two hydrosilyl groups of formula ##STR39## wherein each R is H, OSi(CH.sub.3).sub.3 or an organic group having 1 to 10 carbon atoms,
- R.sup.1 is selected from the divalent group consisting of ##STR40## wherein R.sup.2, R.sup.3 and R.sup.4 are divalent hydrocarbon groups having 1 to 20 carbon atoms, a is 0 or 1 and wherein
- (i) m.gtoreq.1;
- and (ii) m+n=2.about.50,
- the backbone of said first organic polymer is selected from the group consisting of (meth)acrylate ester polymers, hydrocarbon polymers and polyester polymers,
- (D) a second organic polymer having at least one alkenyl group, said second organic polymer selected from the group consisting of (meth)acrylate ester polymers, hydrocarbon polymers and polyester polymers wherein the backbone of said first and second polymers are both either (meth)acrylate ester polymers, hydrocarbon polymers, or polyester polymers, and
- (E) a hydrosilylation catalyst.
4 more elements
The composition according to claim 30, wherein the hydrosilyl group-containing organic polymer (C) is a polymer which comprises an aliphatic polyester.
Dependencies are inferred from the claim text.