Ionically cross-linked siloxane polymers

Details Ionically cross-linked siloxane polymers Ionically cross-linked siloxane polymers

C - Chemistry, Metallurgy

08

G

402/21

C08G 77/26 (2006.01) C08G 77/28 (2006.01)

Patent

CA 1240095

IONICALLY CROSS-LINKED SILOXANE POLYMERS ABSTRACT OF THE DISCLOSURE Siloxane polymers containing zwitterions on tertiary silicone atoms and their aminoalkyl siloxane polymer intermediates are provided. Methods of their production are also provided. The aminoalkyl siloxane polymer intermediates and the zwitterionic siloxane polymers are obtained by co-polymerizing trifunctional aminoalkyl silanes or zwitterionic silanes, respectively, with hydroxy-terminated siloxane oligomers in the presence of an acid catalyst. The aminoalkyl siloxane polymer intermediate are converted to zwitterionic siloxane polymer by reaction with an organosultone or an organo- lactone. Trifunctional aminoalkyl silanes are readily available and utilizing these silanes provides an economical route to obtaining zwitterionic siloxane polymers.

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