Storage stable organosiloxane composition and method for prepari

Details Storage stable organosiloxane composition and method for prepari Storage stable organosiloxane composition and method for prepari

1991-11-12

1992-10-06

Bleutge, John C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524588, 525474, 525478, C08K 910

Patent

active

051532387

ABSTRACT:
Storage stable and gel-free organosiloxane compositions in the form of flowable powders are prepared by blending a high consistency polydiorganosiloxane into a quantity of fluidized reinforcing filler that is heated to a temperature of from 100.degree. to 200.degree. C. prior to or immediately following introduction of the polydiorganosiloxane. When silica is the reinforcing filler, the filler is typically treated with an anti-creping agent either prior to or during this blending process. The resultant mixture is heated while being subjected to shearing forces that reduce its average particle size to achieve a flowable powder.

REFERENCES:
patent: 4742142 (1988-05-01), Shimizu et al.
patent: 4766176 (1988-08-01), Lee et al.
patent: 5015691 (1991-05-01), Lewis et al.
patent: 5015716 (1991-05-01), Togashi et al.

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