Transparent storage-stable polysiloxanes which cross-link under

Details Transparent storage-stable polysiloxanes which cross-link under Transparent storage-stable polysiloxanes which cross-link under

1975-03-18

1977-01-04

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 465G, C08L 8304

Patent

active

040011682

ABSTRACT:
A polysiloxane composition which can be cross-linked under atmospheric conditions and which consists essentially of:
A. 100 parts by weight of an .alpha.,.omega.-dihydroxymethylphenylpolysiloxane with about 7-15 mole % of diphenylsiloxy units or about 14-28 mole % of methylphenylsiloxy units, and having a viscosity of between about 1,000 and 500,000 cSt (at 20.degree. C),
b. about 1 to 40 parts by weight of an uncoated reinforcing filler consisting essentially of SiO.sub.2 having a specific surface area of about 40 to 500 m.sup.2 /g by the BET method, and
C. about 1 to 10 parts by weight of a cross-linking agent of the formula

REFERENCES:
patent: 3065194 (1962-11-01), Nitzsche et al.
patent: 3133891 (1964-05-01), Ceyzeriat
patent: 3359237 (1967-12-01), Boissieras et al.
patent: 3457214 (1969-07-01), Modic
patent: 3624023 (1971-11-01), Hartlage
patent: 3689454 (1972-09-01), Smith et al.

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