Room-temperature-curing silicone sealants

Details Room-temperature-curing silicone sealants Room-temperature-curing silicone sealants

1986-03-03

1987-03-24

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

524860, 528 34, 528 35, C08G 7706

Patent

active

046526242

ABSTRACT:
This invention is a method of improving the shelf life and oil resistance of silicone elastomeric sealants which are based upon hydroxyl endblocked polydiorganosiloxanes, alkyltrialkoxysilane, and titanate catalyst. The improvement is accomplished by the addition of from 10 to 100 parts by weight of silethylene ended polymer of the formula ##STR1## where each R is an organic radical selected from methyl, ethyl, propyl, phenyl, and trifluoropropyl, each R" is methyl or ethyl, Z is an ethylene radical or combination of ethylene radicals and siloxane radicals, a is 0 or 1, and x is of a value such that the polymer has a viscosity of from 0.05 to 10 Pa.s at 25.degree. C.

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patent: 3334067 (1967-08-01), Weyenberg
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patent: 3856839 (1974-12-01), Smith et al.
patent: 4111890 (1978-09-01), Getson et al.
patent: 4438039 (1984-03-01), Beer et al.
patent: 4461867 (1984-07-01), Supremant

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