Shelf-stable RTV silicone compositions

Details Shelf-stable RTV silicone compositions Shelf-stable RTV silicone compositions

1991-06-25

1992-11-24

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 21, 528 34, 428447, 524268, 524731, C08G 7706

Patent

active

051662965

ABSTRACT:
A method is provided for preparing a polyalkoxysilyl-terminated polydiorganosiloxane having higher viscosity and improved stability in viscosity over long storage periods, comprising reating (A) at least one silanol-terminated polydiorganosiloxane; and (B) at least one polyalkoxysilane; the reaction being conducted in the presence of (C) a catalytic amount of an acidic amine salt; and (D) an effective amount of an organic formate. In addition, the present invention provides a method for making such polyalkoxysilyl-terminated silicone compositions, as well as shelf-stable, one component RTV's containing these compositions.

REFERENCES:
patent: 4705826 (1987-11-01), Weber et al.
patent: 4781973 (1988-11-01), Zotto
patent: 4826915 (1989-05-01), Stein et al.
patent: 4863992 (1989-09-01), Wengrovius et al.

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