Method of making a pumpable, stable polydiorganosiloxane-silica

Details Method of making a pumpable, stable polydiorganosiloxane-silica Method of making a pumpable, stable polydiorganosiloxane-silica

1995-11-29

1997-09-23

Dean, Karen A.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524860, 524847, 524731, 524588, 524457, 524837, 427213, C08K 906, C08L 8300

Patent

active

056705603

ABSTRACT:
A process of making a pumpable, stable, polydiorganosiloxane-silica foundation mixture by mixing and heating a polydiorganosiloxane, a reinforcing silica filler, and a diol surface modifying agent at >50.degree. C. to <180.degree. C. using 0.05 to 0.5 parts by weight of the diol per one part by weight of the silica. The foundation mixture can be used to make RTV silicone sealant compositions which are non-sag.

REFERENCES:
patent: 2890188 (1959-06-01), Konkle et al.

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