C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/22 (2006.01) C08F 2/28 (2006.01) C08F 220/24 (2006.01) D06M 15/248 (2006.01) D06M 15/263 (2006.01) D06M 15/277 (2006.01)
Patent
CA 2319735
This invention relates to a composition and process for preparing an aqueous emulsion composition of a fluorochemical copolymer for imparting oil and water repellency to textiles, the copolymer comprising perfluoroalkyl acrylates or (meth)acrylates; vinylidene chloride; and alkyl acrylates or (meth)acrylates; wherein the resulting emulsion has improved stability under conditions of high alkalinity, a highly anionic environment or high shear.
L'invention porte sur des compositions et procédés de préparation d'une émulsion aqueuse d'un copolymère fluorochimique conférant aux textiles un pouvoir répulsif vis à vis des huiles et de l'eau. Ledit copolymère comprend des acrylates ou (méth)acrylates de perfluoroalkyle, du chlorure de vinylidène, et des acrylates ou (méth)acrylates d'alkyle. L'émulsion résultante présente une stabilité améliorée en milieu fortement alcalin, ou fortement anionique, ou lorsqu'elle est soumise à un fort cisaillement.
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
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