Process for rapidly bodying organopolysiloxane resins

Details Process for rapidly bodying organopolysiloxane resins Process for rapidly bodying organopolysiloxane resins

1980-06-16

1982-05-04

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528 14, 528 15, 528 17, 528 18, 525475, C08L 9100

Patent

active

043281370

ABSTRACT:
There is disclosed a method for effecting the controlled rapid condensation of silanol radicals in silanol-containing organopolysiloxanes such as silicone resins. The process is effected by catalyzing such resin with 5 to 350 ppm stannous salt or soap; heating the catalyzed resin until a preselected viscosity is obtained; generating the first catalyst with a relatively moderate second metal soap catalyst, whereupon a condensed or bodied resin can be diluted to a preselected weight percent solids.

REFERENCES:
patent: 3375223 (1968-03-01), Merrill
patent: 3389114 (1968-06-01), Burzynski et al.
patent: 3865766 (1975-02-01), Merrill
patent: 4056492 (1977-11-01), Merrill

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