Stable aqueous suspension concentrate for delivery of...

Details Stable aqueous suspension concentrate for delivery of... Stable aqueous suspension concentrate for delivery of...

A - Human Necessities

61

K

A61K 8/27 (2006.01) A61K 8/29 (2006.01) A61K 31/325 (2006.01) A61K 31/425 (2006.01)

Patent

CA 2646280

A stable, aqueous suspension concentrate which includes a solid polymeric dispersant comprising one or more anionic polymeric dispersing agents, optionally a co-dispersant which preferably is a homopolymer and/or a copolymer of a heterocyclic vinyl lactam, preferably in a wt. ratio of 0.1:1 to 1 :0.1 , a UV-labile, water-insoluble biocide active, and a UV-blocker or UV-absorber to stabilize said active upon storage and/or exposure to sunlight or UV radiation.

La présente invention concerne un concentré stable de suspension aqueuse qui contient un dispersant polymérique solide comportant un ou plusieurs agents de dispersion anioniques polymérique, éventuellement un co-dispersant qui est de préférence un homopolymère et/ou un copolymère d'un lactame vinylique hétérocyclique, de préférence dans un rapport pondéral de 0,1:1 à 1 :0,1, un biocide actif insoluble dans l'eau et instable aux UV, et un agent de blocage des UV ou un agent d'absorption des UV permettant de stabiliser ledit biocide actif lors d'un stockage et/ou d'une exposition à la lumière solaire ou à un rayonnement UV.

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