Method and novel catalyst compositions for preparing polyorganos

Details Method and novel catalyst compositions for preparing polyorganos Method and novel catalyst compositions for preparing polyorganos

1983-08-01

1985-04-02

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 23, 524860, C08G 7706

Patent

active

045088870

ABSTRACT:
Polyorganosiloxanes are prepared from at least one organosiloxane reactant containing an average of more than one silicon-bonded hydroxyl group per molecule using novel catalyst compositions consisting essentially of (1) at least one salt formed from equimolar amounts of an amine and sulfuric acid, phosphoric acid, a carboxylic acid or an organosulfonic acid and (2) an unreacted acid selected from the group consisting of sulfuric acid and fluorinated alkanesulfonic acids.

REFERENCES:
patent: 3155634 (1964-11-01), Pike
patent: 3160601 (1964-12-01), Hyde
patent: 3280071 (1966-10-01), Beck
patent: 3298997 (1967-01-01), Holbrook
patent: 3308203 (1967-03-01), Metevia et al.
patent: 3647740 (1972-03-01), Loree et al.
patent: 3843702 (1974-10-01), deMontigny et al.
patent: 4431771 (1984-02-01), Falender et al.
Hackh's Chemical Dictionary, p. 35, 1972.

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