Polyorganosiloxane compositions

Details Polyorganosiloxane compositions Polyorganosiloxane compositions

1984-10-26

1985-11-19

Marquis, Melvyn I.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 88, 521 91, 525100, 525101, 525474, 525479, 528 15, 528 29, 528 42, C08G 7700

Patent

active

045542961

ABSTRACT:
Novel fluorine-containing polyorganosiloxanes comprise repeating units of the formula [F(CF.sub.2).sub.m (CH.sub.2).sub.n ].sub.p SiO.sub.(4-p)/2, R.sub.3 SiO.sub.1/2 and SiO.sub.4/2 where R represents a monovalent hydrocarbon radical containing from 1 to 20 carbon atoms, m has an average value from 1 to 20, n is 1 or 2 and p is 1, 2 or 3. The polyorganosiloxanes are particularly useful as stabilizers for foams prepared by introducing gaseous blowing agents into liquid polydimethylsiloxanes.

REFERENCES:
patent: 2676182 (1954-04-01), Daudt et al.
patent: 3038000 (1962-06-01), Schmidt
patent: 3328349 (1967-06-01), Lentz
patent: 3511788 (1970-05-01), Keil
patent: 3809783 (1974-05-01), Pittman et al.
patent: 4179426 (1979-12-01), Steinbach et al.
patent: 4489201 (1984-12-01), von Au et al.

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