Neutralization of polyorganosiloxanes using triorganosilanes and

Details Neutralization of polyorganosiloxanes using triorganosilanes and Neutralization of polyorganosiloxanes using triorganosilanes and

1992-10-05

1994-02-01

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

525478, 525 14, 525 37, C08G 7712

Patent

active

052833089

ABSTRACT:
Curable polyorganosiloxanes prepared using a base-catalyzed equilibration reaction involving at least one organosiloxane are treated with a composition that includes a triorganohalosilane to neutralize the catalyst. The silane can be used alone or in combination with other Lewis acids. Curable compositions containing polyorganosiloxanes prepared using the present method exhibit improved thermal stability relative to compositions containing polyorganosiloxanes prepared using prior art neutralizing agents.

REFERENCES:
patent: 3937684 (1976-02-01), Razzano
patent: 3978104 (1976-08-01), Razzano
patent: 4272624 (1981-06-01), Razzano
patent: 4341888 (1982-07-01), Razzano
patent: 4719276 (1988-01-01), Stebleton
patent: 5173558 (1992-12-01), Hansen et al.

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