Bleaching compositions
AssigneeColgate-Palmolive Company
InventorHendrik Frans Weyn
Life of this patent
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Abstract
A bleaching composition and method utilizing a percompound, an acyl-alkyl ester, and an ester-hydrolyzing enzyme, the ester and the enzyme being adapted to react to form an activator for the percompound.
Claims7
A process for bleaching materials which comprises contacting the material to be bleached with an aqueous solution, said solution being at a temperature of at least 25.degree.C. and containing effective amounts of an oxygen-releasing inorganic percompound, an acyl-alkyl ester having the formula R.sub.1 COOR.sub.2 wherein R.sub.1 is an alkyl group of 1 to 7 carbon atoms and R.sub.2 is an alkyl group of 1 to 10 carbon atoms and an esterase or lipase enzyme capable of hydrolyzing said ester wherein the ratio of said percompound to said ester is about 1 to 6 to about 6 to 1 and the ratio of said ester to said enzyme is about 30 to 1 to about 5 to 1, and said percompound is present in an amount of about 1% to about 40% by weight of the total composition.
A bleaching composition consisting essentially of an oxygen-releasing inorganic percompound, an acyl-alkyl ester having the formula R.sub.1 COOR.sub.2 wherein R.sub.1 is an alkyl group of 1 to 7 carbon atoms and R.sub.2 is an alkyl group of 1 to 10 carbon atoms and an esterase or lipase enzyme capable of hydrolyzing said ester, said composition being effective for bleaching at temperatures of 25.degree.C. and above, wherein said percompound is present in an amount of about 1% to about 40% by weight of the total composition, and wherein the ratio of said percompound to said ester is about 1 to 6 to about 6 to 1 and the ratio of said ester to said enzyme is about 30 to 1 to about 5 to 1.
Dependencies are inferred from the claim text.