Aqueous polymer dispersions containing alkenyl succinic acid...

C - Chemistry – Metallurgy – 07 – D

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C07D 307/60 (2006.01) C08F 2/22 (2006.01) C14C 11/00 (2006.01) D06M 13/10 (2006.01) D21H 17/16 (2006.01)

Patent

CA 2551769

The invention relates to aqueous polymer dispersions containing alkenyl succinic acid anhydrides. Said polymer dispersions can be obtained by miniemulsion polymerisation of hydrophobic monoethylenically unsaturated monomers in the presence of alkenyl succinic acid anhydrides. The invention also relates to methods for producing such polymer dispersions by polymerising hydrophobic monomers according to a miniemulsion polymerisation in the presence of at least one alkenyl succinic acid anhydride, and optionally one alkyl diketene. The invention further relates to the use of the aqueous polymer dispersions containing alkenyl succinic acid anhydrides obtained in this way, as pulp and surface sizing agents for paper, and for hydrophobing leather, natural and/or synthetic fibres, and textiles.

L'invention concerne des dispersions polymériques aqueuses contenant des anhydrides d'acide alcénylsuccinique et obtenues par polymérisation en miniémulsion de monomères monoéthyléniquement insaturés hydrophobes en présence d'anhydrides d'acide alcénylsuccinique. L'invention concerne également le procédé de production de ces dispersions polymériques par polymérisation de monomères hydrophobes à la manière d'une polymérisation en miniémulsion en présence d'au moins un anhydride d'acide alcénylsuccinique et éventuellement d'un alkyldicétène. L'invention concerne enfin l'utilisation des dispersions polymériques aqueuses contenant des anhydrides d'acide alcénylsuccinique ainsi obtenues comme produit de collage dans la masse et en surface pour le papier et pour l'imperméabilisation du cuir, de fibres naturelles et/ou synthétiques et de textiles.

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