Method for preparation of siloxanyl phosphate

Details Method for preparation of siloxanyl phosphate Method for preparation of siloxanyl phosphate

1995-01-05

1996-01-02

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 708

Patent

active

054810159

ABSTRACT:
A method for producing siloxanyl phosphate under moderate conditions and at a fast rate to produce a high viscosity siloxanyl phosphate having a low phosphoric acid content. The siloxanyl phosphate prepared by the present method is particularly useful as an agent for neutralizing basic catalysts used in manufacturing processes for producing high viscosity diorganopolysiloxanes. The method comprises reacting a mixture comprising phosphoric acid and a hydroxyl-ended diorganosiloxane. A preferred method comprises reacting a mixture comprising phosphoric acid, a hydroxyl-ended diorganosiloxane, and a triorganosiloxy-ended diorganosiloxane.

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patent: 4177200 (1979-12-01), Razzano et al.
patent: 5041586 (1991-08-01), Beck et al.
patent: 5099051 (1992-03-01), Beck et al.

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