×

Liquid laundry detergent compositions having enhanced clay removal benefits

  • US 6,579,839 B2
  • Filed: 10/31/2002
  • Issued: 06/17/2003
  • Est. Priority Date: 02/23/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A liquid laundry detergent composition comprising:

  • a) from about 0.01 to about 20% by weight, of a zwitterionic polymer having the formula;

    embedded image

    wherein R units are C3-C6 alkylene units, R1 is hydrogen, Q, —

    (R2O)tY, and mixtures thereof, R2 is ethylene, Y is selected from the group consisting of hydrogen, anionic units selected from the group consisting of —

    (CH2)fCO2M, —

    C(O)(CH2)fCO2M, —

    (CH2)fPO3M, —

    (CH2)fOPO3M, —

    (CH2)fSO3M, —

    CH2(CHSO3M)(CH2)fSO3M, —

    CH2(CHSO2M)(CH2)fSO3M, and mixtures thereof;

    M is hydrogen, a water soluble cation, and mixtures thereof;

    the index f is from 0 to about 10;

    Q is selected from the group consisting of C1-C4 linear alkyl, benzyl, and mixtures thereof;

    the index m is from 0 to 20;

    the index t is from 15 to 25;

    wherein at least one Y is an anionic unit;

    b) from about 0.1% to about 7% by weight, of an ethoxylated polyalkyleneimine dispersant;

    c) from about 0.01% to about 80% by weight, of a surfactant system comprising one or more surfactants selected from the group consisting of nonionic, anionic, cationic, zwitterionic, ampholytic surfactants, and mixtures thereof; and

    d) the balance carriers and adjunct ingredients.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×