Decomposing surfactant

Details Decomposing surfactant Decomposing surfactant

2007-01-09

2007-01-09

Zucker, Paul A. (Department: 1621)

Colloid systems and wetting agents; subcombinations thereof; pro

Compositions containing an agent for breaking ; processes of...

Continuous liquid phase colloid system and discontinuous...

C560S174000, C560S178000, C562S577000

Reexamination Certificate

active

10837617

ABSTRACT:
Use of a compound having a hydrophobic moiety attached to a hydrophilic moiety, wherein the hydrophilic moiety comprises a β-keto acid group and the hydrophobic moiety is attached via a bond from a carbon or an oxygen of the hydrophobic moiety to a carbon of the β-keto acid group, provided that the β-carbon of the β-keto acid group does not form part of a carboxyl or ester group, or a salt thereof, as a surfactant. A dispersion comprising said surfactant as a dispersing agent. A method for breaking a dispersion comprising said surfactant as a dispersing agent, said method comprising the steps of a) providing said dispersion at a temperature where it is substantially stable; and b) setting the temperature of said dispersion, so as to achieve a desired decomposition rate of the surfactant.

REFERENCES:
patent: 4561913 (1985-12-01), Zado
patent: 5789371 (1998-08-01), Tracy et al.
patent: 923449 (1963-04-01), None
Mauro Bassetti et al., “Chemioselectivity in the Presence of Surfactants. I. c-vs. O-Alkylation in β-Dicarbonyl Compounds”, Gazette Chimica Italiana, vol. 116, 1986, pp. 583-585.
Okahara, M., Database WPI, Week 199238, Derwent Publication Ltd., London, GB; Class D25, AN 1992-312377 & JP 4217972 A, Aug. 7, 1992 (Abstract).
Agency of Ind Sci & Technology, Database WPI, Week 198929, Derwent Publication Ltd., London, GB; Class B05, AN 1989-211484 & JP 1149751 A, Jun. 12, 1989 (Abstract).
Nippon Mining Co, Database WPI, Week 199315, Derwent Publication Ltd., London, GB; Class A41, AN 1993-121317 & JP 5058955 A, Mar. 9, 1993 (Abstract).
STN International, File CAPLUS, CAPLUS Accession No. 1987:120231, Document No. 106:120231, Texaco Development Corp. “N-Acylamino Acids”, & JP, A2, 61236760, 19861022.
Erik M. P. Widmark, “The Kinetics of the Ketonic Decomposition of Aceto-Acetic Acid”, (From the Chemical Laboratory of the Royal Veterinary and Agricultural College, Copenhagen), pp. 393-421.1920.
Stjerndahl et al., “Novel Surfactants Preparation, Applications, and Biodegradability”, Surfactant Science Series, vol. 114, 2003, pp. 317-345.
Stjerndahl et al., “Synthesis and Properties of 2-Alkoxy-N, N-Dimethylethylamine N-Oxides”, Journal of the American Oil Chemists' Society, Surfactants & Detergents, vol. 62, No. 3, Mar. 1985, pp. 555 to 557.

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