Back to results
US 9,249,379 B2Granted
Liquid laundry detergent
AssigneeConopco, Inc.
InventorsDavid Victor Avila, Stephen Norman Batchelor, Jayne Michelle Bird, Peter William Elliott
Life of this patent
Estimating the term…
Abstract
A colored laundry detergent is provided that photobleaches.
Claims10
A laundry liquid detergent composition comprising:
- (i) from 0.0001 to 0.01 wt % of a shading dye comprising an anionic group covalently bound to alkoxy groups;
- and,
- (ii) from 5 to 70 wt % of surfactants selected from anionic and non-ionic surfactants,
- wherein a weight fraction of the non-ionic surfactants is from 0.05 to 0.75 of the total wt % of the anionic and non-ionic surfactants,
- wherein the non-ionic surfactants comprise an alkyl ethoxylate with a C12 to C15 primary alkyl chain and 7 to 9 ethoxy groups;
- wherein the alkyl ethoxylate is from 50 to 100 wt % of a total weight of the non-ionic surfactants, and
- wherein the dye is of the form:
- Dye-NR1R2,
- wherein the NR1R2 group is attached to an aromatic ring of the dye and at least one of the R1 and R2 groups is independently selected from:
- a polyoxyalkylene chain having 2 or more repeating units and is terminated by an anionic group,
- wherein the dye is a mono-azo dye and the anionic group is selected from:
- CO2−;
- and, SO3−.
10 more elements
Dependencies are inferred from the claim text.