Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
2006-09-12
2006-09-12
Webman, Edward J. (Department: 1616)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S070150, C424SDIG013, C424S078180
Reexamination Certificate
active
07105153
ABSTRACT:
A thickener-rheology modifier system for use in hair care and skin care compositions comprising:a) a hydrophobically modified, alkali-soluble copolymer thickener comprising an aqueous emulsion copolymer of:i) from about 5 to 70 weight percent of α, β ethylenically unsaturated carboxylic acid monomer of the formula:where R is H and R1is H, C1–C4alkyl, or —CH2COOX; R is —COOX and R1is H or —CH2COOX; and R is CH3and R1is H, C1–C4alkyl or —CH2COOX; and X is H or C1–C4alkyl;ii) from about 10 to 90 weight percent of a nonionic, copolymerizable, α, β ethylenically unsaturated monomer of the formula:in-line-formulae description="In-line Formulae" end="lead"?CH2═CYZin-line-formulae description="In-line Formulae" end="tail"?where Y is H or CH3and Z iswhere R is C1to C4alkyl; andiii) from about 1 to 30 weight percent of a hydrophobically modified, α, β ethylenically unsaturated carboxylic acid monomer of the formula:where R is an alkyl group of 6 to 22 carbon atoms or an alkaryl of 8 to 22 carbon atom, x is an average number of from about 6 to 200, y is an average number of from about 0 to 50 and A is residue of an unsaturated carboxylic acid having the formula:were R′ is H, —COOH or CH3and R″ is H, CH3, —COOH or —CH2COOH; andb) a polysaccharide hydrocolloid or gum or polyalkylene glycol.Preferably the thickener-rheology modifier system will contain a surfactant and more preferably will contain boric acid.
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Gregory D. Shay, “Alkali-Swellable and Alkali-Soluble Thickener Technology”, American Chemical Society, 1989, Chapter 25, pp. 457-494.
Babenko Tamara
Cottrell Ian W.
Pluyer Johan G. L.
Sorrentino Paul M.
Kaiser Karen
LeCroy David
National Starch and Chemical Investment Holding Corporation
Webman Edward J.
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