C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 47/00 (2006.01) C08L 83/07 (2006.01) C08L 83/14 (2006.01)
Patent
CA 2052799
This invention is directed to a polymeric composition comprising (a) a continuous phase of a cross-linked organosilicon polymer comprised of alternating (i) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings and (ii) residues derived from the group consisting of cyclic polysiloxanes and tetrahedral siloxysilanes, linked through carbon to silicon bonds, and (b) a discontinuous phase of a low molecular weight hydrocarbon elastomer having at least two hydrosilation readable carbon-carbon double bonds. In addition, this invention is directed to a prepolymer composition comprising (a) a hydrosilation cross-linkable organosilicon prepolymer which is the partial reaction product of (i) polycyclic polyenes having at least two non-aromatic, non-conjugated hydrosilation reactive carbon-carbon double bonds in their rings and (ii) cyclic polysiloxanes or tetrahedral siloxsilanes having at least two hydrosilation reactive .ident.SiH groups wherein at least one of (i) or (ii) has at least three reactive groups, and (b) hydrocarbon elastomer having at least two hydrosilation readable carbon-carbon double bonds.
Barnum Paquita E.
Brady Richard L.
Fetherstonhaugh & Co.
Hercules Incorporated
National Starch And Chemical Investment Holding Corporation
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