Room temperature curing polysiloxane compositions

Details Room temperature curing polysiloxane compositions Room temperature curing polysiloxane compositions

1980-01-07

1981-11-17

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

260 18S, 260 37SB, 528 26, 528 18, 528 33, C08G 7704

Patent

active

043012698

ABSTRACT:
A storage-stable, room-temperature-curing polysiloxane composition comprising polydiorganosiloxane having silanol terminal radicals and from 0.5 to 25 parts by weight, per 100 parts by weight of said polydiorganosiloxane, of a curing agent containing from 1.5 to 100 wt. % of silane having the formula ##STR1## wherein R.sup.3 is a substituted or unsubstituted hydrocarbon radical, Q is alkylene or alkylidene, R.sup.4 is ##STR2## wherein R.sup.6 and R.sup.7 are substituted or unsubstituted hydrocarbon radicals, R.sup.5 is hydrogen or a substituted or unsubstituted hydrocarbon radical, n is 1 or 2, a is 0 or 1 and b is 1, 2, 3 or 4, and the balance of the curing agent is tri-acyloxysilane.

REFERENCES:
patent: 3035016 (1962-05-01), Bruner
patent: 3318843 (1967-05-01), Bluestein
patent: 3714089 (1973-01-01), Hamilton et al.

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