Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-09-02
1986-07-08
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523212, 523214, 524413, 524425, 524430, 524431, 524432, 524433, 524445, 524424, 524452, 524500, 525478, 528 31, C08L 8300
Patent
active
045993742
ABSTRACT:
Solvent resistant, vulcanizable silicone rubber compositions are improved by using a class of hydrosiloxy (silicon hydride) polymer cross-linking agents in a blend of a vinyl-containing polymer, a suitable catalyst and a siloxane resin. One hydrosiloxy polymer cross-linking agent is a copolymer having about 0.75 to about 3.0 moles of R.sub.2 HSiO.sub.0.5, about 0.37 to about 1.5 moles of R"SiO.sub.1.5, and about 0.5 to about 1.5 moles of SiO.sub.2, wherein R is selected from the group consisting of alkyl radicals of 1 to about 8 carbon atoms and phenyl; and R" is a (--CH.sub.2 --).sub.a R' radical where R' is perfluoroalkyl of 1 to about 8 carbon atoms, a is at least 2 but less than 10, and (--CH.sub.2 --) is straight or branched chain; and the copolymer has a viscosity of about 30 to about 4,000 centipoise at 25.degree. C.
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Briggs Sr. Wilbert J.
General Electric Co.
Loser Gary L.
LandOfFree
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