Organosiloxane compositions yielding tough elastomeric materials

Details Organosiloxane compositions yielding tough elastomeric materials Organosiloxane compositions yielding tough elastomeric materials

1993-11-02

1994-12-06

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

525478, C08G 7708

Patent

active

053711637

ABSTRACT:
Tough gels and elastomers are prepared using compositions curable by a platinum catalyzed hydrosilation reaction that are characterized by the presence of a chain extender containing two silicon-bonded hydrogen atoms per molecule and a cross-linking agent containing at least three silicon bonded hydrogen atoms or alkenyl radicals per molecule, with the proviso that the chain extender contains at least 80 percent of the silicon bonded hydrogen atoms present in the composition or, when said cross-linking agent contains alkenyl radicals, said chain extender contains at least 80 percent of the total moles of silicon bonded hydrogen and said alkenyl radicals.

REFERENCES:
patent: 4340709 (1982-07-01), Jeram et al.
patent: 5145933 (1992-09-01), Grisoni et al.

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