Organopolysiloxanes containing cure accelerators

Details Organopolysiloxanes containing cure accelerators Organopolysiloxanes containing cure accelerators

1987-09-11

1989-01-10

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

524267, 524588, 524860, 528 14, 528 34, 528 41, 528901, C08G 7706

Patent

active

047974621

ABSTRACT:
Organopolysiloxanes curable into elastomeric state, well adapted as sealing materials for a variety of substrates and useful, e.g., in the automotive industry, are comprised of a polyhydroxylated polysiloxane, a polyacyloxysilane crosslinking agent, and an effective amount of at least one calcium oxide, strontium oxide and/or barium oxide cure accelerator therefor. The subject compositions are stable for at least 10 minutes at ambient temperature and crosslink on heating and/or addition of an aqueous or liquid carboxylic acid promoter thereto.

REFERENCES:
patent: 4304897 (1981-12-01), Bluestein
patent: 4532315 (1985-07-01), Letoffe et al.
patent: 4604444 (1986-08-01), Donnadieu et al.
patent: 4680363 (1987-07-01), Beers

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