Method for silalactone preparation and use

Details Method for silalactone preparation and use Method for silalactone preparation and use

C - Chemistry, Metallurgy

07

F

402/25, 260/442.

C07F 7/18 (2006.01) C08G 77/14 (2006.01) C08G 77/60 (2006.01)

Patent

CA 1274836

METHOD FOR SILALACTONE PREPARATION AND USE ABSTRACT Carboxyalkyl-substituted organopolysiloxanes are prepared by hydrolysis of a silalactone composition having the formula Image where n has an average value greater than zero, R and Q are hydrocarbon and X is Cl or Br. Silicon-containing compounds having the formula RaZbSio(4-a-b)/2' where Z is a hydrolyzable radical, can be cohydrolyzed therewith. The silalactone composition is prepared by gently heating a mixture of an ester having the formula X2R SiQCO2R' and a catalyst, such as N,N-dimethylbenzylamine.

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