Solid compositions containing amine oxide-maleic acid salts

Details Solid compositions containing amine oxide-maleic acid salts Solid compositions containing amine oxide-maleic acid salts

1994-04-22

1995-03-21

Lieberman, Paul

Compositions

Fluent dielectric

N-containing

252546, 25217419, 564298, 562582, C11D 175, C11D 320, C07C 59245, C07C29100

Patent

active

053992962

ABSTRACT:
Disclosed are solid, concentrated, amine oxide surfactant compositions containing amine oxide- maleic acid salts. The molar ratio of maleic acid to amine oxide in such salts is about a 1:1. The salts are soluble in water at 25.degree. C. at a pH of above the pKa of the amine oxide. Also disclosed is a process for preparing such solid amine oxide surfactant compositions, which process comprises admixing maleic acid and amine oxide surfactants in at least about a 1:1 molar ratio, at a pH of at least about 1 units less than the pKa of the amine oxide, to thereby 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 solid, concentrated source of amine oxide surfactant.

REFERENCES:
patent: 3275673 (1966-09-01), Barlow
patent: 3983079 (1976-09-01), Spadini et al.
patent: 4320033 (1982-03-01), Yoshikawa
patent: 4338216 (1982-07-01), Earl et al.
patent: 5075501 (1991-12-01), Borland et al.
patent: 5130488 (1992-07-01), Smith et al.
English Abstract of Japan Patent Document JP 4904282, Apr. 18, 1974, Derwent Publications Ltd., Derwent data base accession No. 74942V/43.

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