CARBOXYLIC ACID FUNCTIONAL SILOXANES OF DEFINED STRUCTURE

Organopolysiloxanes bearing regularly spaced pendent carboxylic acid groups or salts thereof have a block polymer structure and are derived by the double half-esterification of a dianhydride and a silanol- or carbinol-functional organopolysiloxane or sulfur analog thereof. The products can form stab...

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Bibliographische Detailangaben
Hauptverfasser: CALIMENTE, Daniel, MCCORMACK, Timothy B
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Organopolysiloxanes bearing regularly spaced pendent carboxylic acid groups or salts thereof have a block polymer structure and are derived by the double half-esterification of a dianhydride and a silanol- or carbinol-functional organopolysiloxane or sulfur analog thereof. The products can form stable aqueous dispersions without the need for a surfactant.