C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
167/304, 134/3.3
C11D 3/37 (2006.01) A61K 8/46 (2006.01) A61K 8/81 (2006.01) A61Q 5/02 (2006.01) C08F 290/06 (2006.01) C08K 5/00 (2006.01)
Patent
CA 1203140
ABSTRACT OF THE DISCLOSURE The invention disclosed provides a process for preparing a thickened, acidic, aqueous liquid which comprises the steps, performed in any order, of a) mixing a thickening amount of an ionic thickener or thickeners with an aqueous solution of from about 5% to about 40%, by weight based on the total weight of the liquid, of a surfactant selected from the group consisting of anionic, nonionic and amphoteric surfactants, and b) neutralizing the thickener to a pH above about 6.5, and the step, performed subsequent to the two above steps, of c) acidifying the pH of the mixture to below 6.5. Alkali-soluble emulsion polymers that have been activated by neutralization to a pH above about 6.5, and subsequently acidified in the presence of a surfactant, are useful as thickeners in acidified, surfactant-containing compositions, eg. shampoo compositions.
423761
Dupre Jean
Witiak David
Gowling Lafleur Henderson Llp
Rohm And Hass Company
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