Production of organopolysiloxane copolymers with a phenyl ether

Details Production of organopolysiloxane copolymers with a phenyl ether Production of organopolysiloxane copolymers with a phenyl ether

1993-12-23

1995-07-04

Krass, Frederick

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

556445, 528 15, 528 31, 528 29, 524862, C08G 7706

Patent

active

054300975

ABSTRACT:
An improved process is provided for the preparation of siloxane-oxyalkylene block copolymer surfactant compositions which utilize a hydrosilylation reaction with a phenyl ether as the reaction solvent. The reaction solvent need not be removed from the block copolymer, particularly when the block copolymer is used as a surfactant for polyurethane foam formulations. Ethylene glycol phenyl ether is the preferred reaction solvent.

REFERENCES:
patent: 3280160 (1966-10-01), Bailey
patent: 3401192 (1968-09-01), Kollonitsch et al.
patent: 3518288 (1970-06-01), Haluska
patent: 4122029 (1978-10-01), Gee et al.
patent: 4857583 (1989-08-01), Austin et al.
patent: 5153293 (1992-10-01), Hales et al.

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