Method for making carboxy aryl terminated organosiloxanes

Details Method for making carboxy aryl terminated organosiloxanes Method for making carboxy aryl terminated organosiloxanes

1989-04-28

1990-01-23

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 708

Patent

active

048959650

ABSTRACT:
A method is provided for making carboxy aryl terminated organosiloxanes, such as 1,1,3,3-tetramethyl-1-3-disiloxane diyl) bis(benzoic acid) by heating a mixture of an aqueous organic solvent and the corresponding haloacyl aryl terminated organosiloxane. The carboxy aryl terminated organolsiloxanes of the present invention can be used to make silicone polyester block copolymers and silicone polycarbonate block copolymers where the silicone block is joined to the organic block by an ester linkage.

REFERENCES:
patent: 2721856 (1955-10-01), Lomme
patent: 2957899 (1960-10-01), Black et al.
patent: 3715377 (1973-02-01), Siciliano
patent: 4604477 (1986-08-01), Rich

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