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US 7,011,772 B2Granted
UV absorbing mixture with textile fiber affinity
AssigneeBASF SE
InventorsThomas Heidenfelder, Gerhard Wagenblast, Jürgen Detering, Thorsten Habeck
Life of this patent
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Abstract
The invention relates to a mixture, comprising (A) 10 to 90 wt. % of at least one C6 to C18 alkyl ester, or C5 to C8 cycloalkyl ester of 2-cyano-3,3-diphenylacrylic acid and (B) 90 to 10 wt. % of at least one further compound, with at least one UV absorption maximum in the range 280 to 450 nm and structurally different from compound (A). Said mixture is suitable for the protection of human skin from damaging UV radiation and for the protection of coloured textile materials from colour fading.
Claims26
A composition comprising
- (A) from 20 to 80% by weight of at least one C6- to C18-alkyl ester or C5- to C8-cycloalkyl ester of 2-cyano-3-diphenylacrylic acid and
- (B) from 80 to 20% by weight of at least one compound which has at least one UV absorption maximum in the range from 280 nm to 450 nm selected from the group consisting of phenylbenzotriazoles, esters of p-aminobenzoic acid, esters of cinnamic acid, esters of salicylic acid, acrylates that are different from said compounds (A), diarylbutadienes and amino-substituted hydroxybenzophenones.
Dependencies are inferred from the claim text.