Amino acid copolymers having pendent polysaccharide moieties and uses thereof
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsJohn S. Thomaides, Klein A. Rodrigues, Paul M. Petersen
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Abstract
A water-soluble or water-dispersible amino acid copolymer having pendent polysaccharide moieties. The invention also provides a method for cleaning an article and a method of providing soil resistance to an article using the amino acid copolymer having pendent polysaccharide moieties. The amino acid copolymers are useful in cleaning compositions such as laundry detergents, dishwashing detergents, prespotters, fabric softeners, and hard surface cleaners.
Claims7
In a cleaning composition comprising at least one surfactant, the improvement comprises adding a water-soluble or water-dispersible amino acid copolymer having pendent polysaccharide moieties having the structure ##STR19## wherein x is independently 1 or 2;
- M.sup.+ is a cation selected from the group consisting of H+, ammonium, alkali metals, alkaline earth metals, Zn.sup.2+, Cu.sup.2+, quaternary organic amines, amino acids, and protonated amino saccharides;
- units a!, b!, c!, d!, e! and f! are present in random order;
- the mole percent of (a+b) is from 5 to 100;
- the mole percent of (c+d) is from 0 to 95;
- the mole percent of (e) is from 0 to 95;
- the mole percent of (f) is from 0 to 95;
- R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, an alkyl group having 1 to 4 carbon atoms, and a saccharide moiety;
- provided that at least one of R.sub.1 or R.sub.2 is a saccharide moiety;
- R.sub.3 and R.sub.4 are independently selected from the group consisting of hydrogen, an alkyl group having 1 to 12 carbon atoms, and a residue of an amino acid other than aspartic acid and glutamic acid.
In a cleaning composition comprising at least one surfactant, the improvement comprises adding a water-soluble or water-dispersible amino acid copolymer having pendent polysaccharide moieties having the structure ##STR20## wherein x is independently 1 or 2;
- M.sup.+ is a cation selected from the group consisting of H+, ammonium, alkali metals, alkaline earth metals, Zn.sup.2+, Cu.sup.2+, quaternary organic amines, amino acids, and protonated amino saccharides;
- units a!, b!, c!, d!, e! and f! are present in random order;
- the mole percent of (a+b) is from 5 to 100;
- the mole percent of (c+d) is from 0 to 95;
- the mole percent of (e) is from 0 to 95;
- the mole percent of (f) is from 0 to 95;
- R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, an alkyl group having 1 to 4 carbon atoms, and a saccharide moiety having the structure (I) ##STR21## wherein R.sub.5 is hydrogen or is represented by structure I(a) ##STR22## and R.sub.6 is hydrogen or is represented by structure I(a) or structure I(b) ##STR23## provided that at least one of R.sub.1 or R.sub.2 is a saccharide moiety;
- R.sub.3 and R.sub.4 are independently selected from the group consisting of hydrogen, an alkyl group having 1 to 12 carbon atoms, and a residue of an amino acid other than aspartic acid and glutamic acid;
- and (m+n) is greater than or equal to 0.
Dependencies are inferred from the claim text.