Compositions – Fluent dielectric – N-containing
Patent
1994-04-22
1995-02-14
Lieberman, Paul
Compositions
Fluent dielectric
N-containing
252546, 25217419, 564298, 562582, C11D 175, C11D 320, C07C 59245, C07C29100
Patent
active
053893069
ABSTRACT:
Disclosed is a process for making solid formulations containing amine oxide surfactants. Maleic acid, or a water soluble salt thereof, is admixed with an aqueous liquid amine oxide formulation, which formulation preferably contains from about 20% to about 40% by weight of an amine oxide surfactant. The molar ratio of maleic acid to amine oxide surfactant is at least about 1:1. Admixture pH is maintained at or below, or reduced to at least, about 1 unit below the pKa of the amine oxide to form a visible precipitate therein. The precipitate is separated from the mixture, preferably by mechanical means, and dried. The dried precipitate is a maleic acid-amine oxide salt which can be incorporated into cleaning products, especially solid or granular cleaning products, as a source of amine oxide surfactant.
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English Abstract of Japan Patent Document JP 4904282, Apr. 18, 1974, Derwent Publications Ltd., Derwent data base accession No. 74942V/43.
Wierenga Thomas J.
Young Raymond D.
Higgins Erin M.
Lieberman Paul
The Procter & Gamble & Company
Winter William J.
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