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US 5,470,510 AGranted
Dispersing agent
AssigneeThe Procter & Gamble Company
InventorsAlan D. Willey, Robin G. Hall
Life of this patent
Estimating the term…
Abstract
Poly(glutamic acid) is used as a dispersing, soil-suspending or anti-redeposition agent in laundry detergent or other cleaning compositions that also contain a detersive surfactant. Suitable polymers include not only the homopolymers of glutamic acid but also block, graft or random copolymers of glutamic acid with biodegradable monomers or polymers, e.g., other amino acids or polyethylene glycol.
Claims3
A cleaning composition comprising (a) from about 0.1 to 15% by weight of a block copolymer comprising biodegradable polyethylene glycol and poly (1-glutamic acid);
- and (b) a detersive surfactant.
Dependencies are inferred from the claim text.