Process for the preparation of organopolysiloxane surfactants

Details Process for the preparation of organopolysiloxane surfactants Process for the preparation of organopolysiloxane surfactants

1987-07-02

1989-08-15

Marquis, Melvyn I.

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...

524765, 528 15, 528 31, 528 25, 528 29, 556401, 556445, 556446, C08Y 506

Patent

active

048575836

ABSTRACT:
An improved process is provided for the preparation of siloxane-oxyalkylene block copolymer surfactant compositions which utilized a hydrosilation reaction with high boiling point polar polyols 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. Dipropylene glycol is the preferred polar solvent and when used in the preparation of the surfactants need not be removed when the surfactants are employed in the preparation of urethane foams.

REFERENCES:
patent: 3402192 (1968-09-01), Haluska
patent: 3518288 (1970-06-01), Haluska
patent: 3629308 (1971-12-01), Bailey et al.
patent: 3980688 (1976-09-01), Litteral et al.
patent: 4122029 (1978-10-01), Gee et al.
patent: 4520160 (1985-05-01), Brown

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