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Surfactant system

  • US 4,203,872 A
  • Filed: 12/18/1978
  • Issued: 05/20/1980
  • Est. Priority Date: 08/01/1975
  • Status: Expired due to Term
First Claim
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1. A surfactant system comprising:

  • A. about 25-75% by weight of a non-ionic detergent which is a mixture of about 25% by weight of a condensation product of 4-5 moles of ethylene oxide with 1 mole of nonyl phenol, and about 75% by weight of a condensation product of 8-12 moles of ethylene oxide with 1 mole of nonyl phenol;

    B. about 5-65% by weight of(1) a tertiary amine oxide selected from the group consisting of(a) alkyl di (lower alkyl) amine oxides in which the alkyl group has about 10-20 carbon atoms and the lower alkyl groups have about 1-7 carbon atoms;

    (b) alkyl di (hydroxy lower alkyl) amine oxides in which the alkyl group has about 10-20 carbon atoms and contains from 0 to 1 ether linkages and has one alkyl moiety which contains from about 10 to 15 carbon atoms and no ether linkages, and the lower alkyl groups have about 1-7 carbon atoms;

    (c) alkylamidopropyl di (lower alkyl) amine oxides in which the alkyl group has about 10-20 carbon atoms and the lower alkyl groups have about 1-7 carbon atoms; and

    (d) alkyl morpholine oxides in which the alkyl group has about 10-20 carbon atoms;

    or(2) an amphoteric detergent selected from the group consisting of(a) betaine detergents having the formula ##STR12## (b) alkyd bridged betaine detergents having the formula ##STR13## (c) imidazoline detergents having the formula ##STR14## (d) alkyliminopropionate detergents having the formula ##STR15## (e) alkyliminodipropionate detergents having the formula ##STR16## (f) ether bridged alkyliminopropionate detergents having the formula ##STR17## (g) ether bridged alkyliminodipropionate detergents having the formula ##STR18## (h) cocoimidazoline based amphoteric detergents having the formula ##STR19## wherein R1 is an alkyl radical containing from about 10 to about 14 carbon atoms,R2 and R3 are each selected from the group consisting of methyl and ethyl radicals, andR4 is selected from the group consisting of methylene, ethylene and propylene radicals;

    C. about 8-50% by weight of a quaternary ammonium halide having the formula ##STR20## wherein X is a halide and wherein R5 is an alkyl or phenyl-substituted alkyl group having about 10-20 carbon atoms, R6 is lower alkyl, R7 is [--CH2 CH2 O--]x H, and R8 is [--CH2 CH2 O--]y H, wherein the sum of x and y is between 2 and 5; and

    D. the remainder water.

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