Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-03-12
1994-06-07
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 10, 528 12, 528 15, 528 39, 528502, 525474, C08G 7738
Patent
active
053190408
ABSTRACT:
A method for making a substantially silanol-free silicone resin powder having a primary particle size in the range of about 0.1-200 nm and an aggregate particle size of 10 nm to 200 microns is provided. An organic solvent dispersion of an organosiloxane hydrolyzate having triorganosiloxy units and tetrasiloxy units is treated with an organo nitrogen compound, such as a silazane and thereafter spray dried. The substantially silanol-free organosilicon powder has been found useful in making heat curable organopolysiloxane compositions, such as pressure sensitive adhesives.
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Burnell Timothy B.
Wengrovius Jeffrey H.
Zumbrum Michael A.
General Electric Company
Marquis Melvyn I.
Pittman William H.
Teoli William A.
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