Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-05-02
1978-05-16
Lilling, Herbert J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 37SB, 260 465R, 260 465G, 526279, C08K 554, C08G 7700, C08G 7704
Patent
active
040898334
ABSTRACT:
A process aid for fluorosilicone compositions and polymers to prevent such polymers in the uncured state from sticking or partitioning on processing equipment comprising adding to the fluorosilicone polymer composition from 2 to 25% by weight of a non-halogenated process aid which is a diorganopolysiloxane polymer having a viscosity varying from 100,000 to 10,000,000 centipoise at 25.degree. C. The organo groups in such a polymer are selected from alkyl radicals, vinyl radicals, phenyl radicals and mixtures thereof wherein the vinyl concentration varies from 5 to 25% by weight. In the alternative that may be utlizied at the same concentration a non-halogenated process aid which is a polysiloxane composed of R.sub.2 SiO units and R SiO.sub.3/2 units wherein the polyme has a viscosity in the range of 5 and 10,000 centipose at 25.degree. C and its silanol content varying from .1 to 5% by weight and R is a monovalent hydrocarbon radical.
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General Electric Company
Koltos E. Philip
Koltos John L.
Lilling Herbert J.
Neuhauser Frank L.
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