U.S. patents available from 1976 to present.
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Low anionic surfactant detergent compositions

Patent 5958858 Issued on September 28, 1999. Estimated Expiration Date: Icon_subject June 25, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3634269

3832408

Liquid detergent containing conditioning agent and high levels of alkyl sulfate/alkyl ethoxylated sulfate Patent #: 4857213
Issued on: 08/15/1989
Inventor: Caswell ,   et al.

Inventors

Assignee

Application

No. 882217 filed on 06/25/1997

US Classes:

510/351, Sulfur containing anionically substituted surfactant which is admixed with a diverse non-soap surfactant510/352, Plural sulfur-containing, anionically substituted surfactants510/356, Oxygen containing surfactant devoid of covalently bonded anionic substituents (e.g., polyethoxylated alcohol, amine oxide, etc.)510/427, With diverse non-soap surfactant510/492Sulfur in the component

Examiners

Primary: Lieberman, Paul
Assistant: Webb, Gregory E.

Attorney, Agent or Firm

Foreign Patent References

  • 34199 EP. 02/12/1980
  • 0662510 EP 07/12/1995

International Class

C11D 001/83

Abstract

Detergent compositions comprising: a) a dianionic cleaning agent comprising a structural skeleton of at least five carbon atoms to which two anionic substituent groups spaced at least three atoms apart are attached, wherein one anionic substituent group is a sulfate group and the other anionic substituent is selected from sulfate and sulfonate; b) a nonionc surfactant (preferably alkyl ethoxylates, especially alkyl ethoxylates having an average of at least 3 ethoxylates); c) in total, less than about 20% by weight anionic surfactants; d) optionally, co-surfactants selected from the group consisting of amphoteric surfactants, zwitterionic surfactants, cationic surfactants, and mixtures thereof; and e) detergent composition adjunct ingredients; and wherein the weight ratio of anionic surfactant to nonionic surfactant plus any optional co-surfactant d) is with the range of from about 1:1 to about 1:10.

Other References

  • Kooreman, P.A., J.B.F.N. Engberts and N.M. van Os, "Synthesis, Physicochemical Properties, and Detergency of Disodium 2-Alkyl-1,3-propanediyl Bissulfates", Journal of Surfactants and Detergents, vol. 1, No. 1, Jan., 1988, pp. 23-28
  • Overbeek, J.T.G., "Thermodynamica van de micelvorming", Chemish Weekblad, vol. 54, 1958, pp. 687-69
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