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US 4,634,551 AGranted
Bleaching compounds and compositions comprising fatty peroxyacids salts thereof and precursors therefor having amide moieties in the fatty chain
AssigneeThe Procter & Gamble Company
InventorsMichael E. Burns, Frederick E. Hardy
Life of this patent
Estimating the term…
Abstract
This invention relates to bleaching compounds and compositions that provide effective and efficient surface bleaching of textiles over a wide range of bleach solution temperatures. The bleaching compounds of the invention yield a peroxyacid with a polar amide link in the hydrophobic chain when used in the bleaching composition. In a preferred embodiment, the bleaching compositions of the invention are also detergent compositions.
Claims25
A compound which has the formula:
- ##STR13## wherein R.sup.1 is an alkyl, aryl or alkaryl group containing from about 1 to about 14 carbon atoms, R.sup.2 is an alkylene, arylene or alkarylene group containing from about 1 to about 14 carbon atoms, R.sup.5 is H or an alkyl, aryl or alkaryl group containing from about 1 to about 10 carbon atoms, X is a compatible anion, n is 1 or 2, and Y is from 0 to about 6.
A bleach activator of the general formulas:
- ##STR16## wherein R.sup.1 is an alkyl, aryl or alkaryl group containing from about 1 to about 14 carbon atoms, R.sup.2 is an alkylene, arlene or alkarylene group containing from about 1 to about 14 carbon atoms, and R.sup.5 is H or an alkyl, aryl or alkaryl group containing from about 1 to about 10 carbon atoms, and L is a leaving group, the conjugate acid of which has a pKa in the range of from about 4 to about 13.
A bleaching composition comprising:
- (a) from about 1% to about 60% of a peroxygen bleaching compound capable of yielding hydrogen peroxide in an aqueous solution;
- and
- (b) from about 0.5% to about 40% of a bleach activator selected from ##STR20## or mixtures thereof, wherein R.sup.1 is an alkyl, aryl or alkaryl group, and R.sup.2 is an alkylene, arylene, or alkarylene group, each containing from about 1 to about 14 carbon atoms, R.sup.5 is H or an alkyl, aryl or alkaryl group containing from about 1 to about 10 carbon atoms and L is a leaving group, the conjugate acid of which has a pKa in the range of from about 4 to about 13 wherein the molar ratio of hydrogen peroxide yielded by (a) to bleach activator (b) is greater than about 1.0.
Dependencies are inferred from the claim text.