Elastomer forming compositions

Details Elastomer forming compositions Elastomer forming compositions

1985-05-20

1986-04-29

Jacobs, Lewis T.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524588, 524863, C08K 326

Patent

active

045858217

ABSTRACT:
A composition which is curable in the presence of moisture to an elastomer having improved adhesion to certain substrates, especially concrete. The composition comprises the product obtained by mixing together (A) a polydiorganosiloxane having terminal silanol groups, (B) an alkoxysilane R.sub.a Si(OR').sub.4-a wherein R represents a monovalent hydrocarbon or halogenated hydrocarbon group having 1-6 carbon atoms, R' is a C.sub.1 to C.sub.4 alkyl group and a is 0 or 1, (C) an organic titanium catalyst, (D) a reinforcing or semi-reinforcing filler and (E) a polydiorganosiloxane gum having a plasticity number (ASTM Test D-926) in the range from 100 to 200.
The compositions are particularly suitable for use as sealants for building structures.

REFERENCES:
patent: 3676420 (1972-07-01), Fulton et al.
patent: 4143088 (1979-03-01), Favre et al.

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