Method for preparing hydrophobically-terminated polysaccharide polymers and detergent compositions comprising the polysaccharide polymers
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsJohn S. Thomaides, James Burkert
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Abstract
The present invention is directed to methods of preparing hydrophobically-terminated polysaccharide polymers. The methods utilized to prepare the hydrophobically-terminated polysaccharide polymers utilize water as the reaction solvent and do not any cosolvent. The invention is also directed to hydrophobically-terminated polysaccharide polymers which are useful as deflocculants in liquid detergent compositions and to the liquid detergent compositions which contain the hydrophobically-terminated polysaccharide polymers.
Claims6
A liquid detergent composition comprising at least 25%, by weight, detersive surfactant, at least 1%, by weight, electrolyte(s) contained in an aqueous continuous phase;
- and about 0.01 to 5%, by weight, polysaccharide deflocculating polymer, the polysaccharide deflocculating polymer having efficacy as a stabilizer, wherein the liquid detergent composition yields no more than 2%. by volume, visual phase separation following storage at 25.degree. C. for 21 days and wherein the deflocculating polymer is represented by structure (III) ##STR7## wherein, R.sup.1 is H or is represented by structure I(a) ##STR8## R.sup.2 is H, or is represented by structure I(a) or structure I(b) ##STR9## R.sup.1' is H or is represented by structure I(a), R.sup.2' is H or is represented by structure I(a) or structure I(b),
- R.sup.1 and R.sup.2 are not both H,
- R.sup.3 is selected from the group consisting of a C.sub.1 -C.sub.3 alkyl group, H or NH.sub.2,
- R.sup.4 represents from 1 to 50 independently selected alkyleneoxy groups or is absent,
- R.sup.5 is a phenylene linkage or is absent,
- R.sup.6 is H, a C.sub.1 -C.sub.24 alkyl group, or the residue of a C.sub.8 -C.sub.20 alkenyl succinic anhydride, provided that;
- when R.sup.5 is absent and R.sup.6 represents H or contains not more than 4 carbon atoms, then R.sup.4 must contain an alkyleneoxy group with at least 3 carbon atoms;
- and when R.sup.4 is absent, then R.sup.6 is not H;
- and when R.sup.4 and R.sup.5 are absent, then R.sup.6 must contain at least 5 carbon atoms, L is the residue of one of an amine-reactive functionality selected from the group consisting of a monocarboxylic acid chloride, isocyanate, chloroformate, mixed or symmetric anhydrides of carboxylic acids, epoxide, primary alkyl halide, primary alkyl sulfonate, primary alkyl sulfate, methylene beta-lactone and alkenyl succinic anhydride;
- and
- the average of (.SIGMA.m+.SIGMA.n) is greater than or equal to 3.
Dependencies are inferred from the claim text.