Elastomer forming compositions

Details Elastomer forming compositions Elastomer forming compositions

C - Chemistry, Metallurgy

08

L

117/185, 400/410

C08L 83/06 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1234944

Abstract of the Disclosure ELASTOMER FORMING COMPOSITIONS A composition which is curable in the presence of mois- ture to an elastomer having improved adhesion to certain substrates, especially concrete. The composition comprises the product obtained by mixing together (A) a polydiorganosi- loxane having terminal silanol groups, (B) an alkoxysilane RaSi(OR')4-a wherein R represents a monovalent hydrocarbon or halogenated hydrocarbon group having 1 - 6 carbon atoms, R' is a C1 to C4 alkyl group and a is 0 or 1, (C) an organic tita- nium 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.

482291

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