Organosilicon polymers and prepolymers comprising a coupling mon

Details Organosilicon polymers and prepolymers comprising a coupling mon Organosilicon polymers and prepolymers comprising a coupling mon

1990-12-31

1992-09-15

Marquis, Melvyn I.

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

Synthetic resins

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

525477, 525479, C08F28300

Patent

active

051479451

ABSTRACT:
Crosslinked or crosslinkable organosilicon polymers and prepolymers comprising either (i) alternating (a) cyclic polysiloxane or tetrahedral siloxysilane residues and (b) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings linked through carbon to silicon bonds, wherein at least one of the cyclic polysiloxanes or tetrahedral siloxysilanes (a) or the polycyclic polyenes (b) used to form the polymer or prepolymer has three or more reactive sites; or (ii) a linear poly(organohydrosiloxane) polymer having at least 30% of its .dbd.SiH groups reacted to hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings; wherein the polymer or prepolymer further comprises a coupling monomer having at least one carbon-carbon double bond which reacts with SiH during hydrosilation.

REFERENCES:
patent: 4855378 (1989-08-01), Pradtl
patent: 4877820 (1989-10-01), Cowan
patent: 4900779 (1990-02-01), Leibfried
patent: 4902731 (1990-02-01), Leibfried

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