×

Aminoacryloyl-containing terpolymers

  • US 5,308,532 A
  • Filed: 03/10/1992
  • Issued: 05/03/1994
  • Est. Priority Date: 03/10/1992
  • Status: Expired due to Fees
0
Associated Cases
0
Associated Defendants
0
Product Citations
0
Petitions
53
Forward Citations
1
Assignment
First Claim
Patent Images

1. A method of enhancing the properties of an automatic machine dishwashing composition comprising adding to said composition an effective amount to reduce spotting and filming of a water-soluble terpolymer, consisting essentially of polymerized units of(a) from about 92 to about 30 percent by weight of one or more C3 -C6 monoethylenically unsaturated carboxylic acids;

  • (b) from about 5 to about 50 percent by weight of one or more aminoacryloyl derivatives selected from the group ofi) ##STR7## wherein;

    R1 is selected from the group consisting of hydrogen and methyl;

    A is selected from the group consisting of O and NH;

    R2 and R3 are either independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, and isobutyl;

    or R2 and R3, together with the carbon to which they are both attached, form a C3 -C7 aliphatic ring;

    M is equal to 0,1, or 2 with the proviso that when M is equal to 0, a C--N bond appears in place of the (CH2)M group; and

    R4 and R5 are either independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, and isobutyl;

    or R4 and R5, together with the nitrogen to which they are both attached, form a three to seven membered non-aromatic nitrogen heterocycle;

    and ii) ##STR8## wherein;

    R1, A, R2, R3, R4, R5 and M are as defined above;

    R6 is selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, and isobutyl;

    and X is any suitable counterion such as a halogen, hydroxide, sulfate, hydrosulfate, phosphate, formate and acetate; and

    (c) from about 3 to about 25 percent by weight of one or more monoethylenically unsaturated monomers polymerizable with (a) and (b) selected from the group consisting of C1 -C4 alkyl esters of acrylic acid, C1 -C4 alkyl esters of methacrylic acid, C1 -C4 hydroxyalkyl esters of acrylic acid, C1 -C4 hydroxyalkyl esters of methacrylic acid, acrylamide, alkyl substituted acrylamides, N,N-dialkyl substituted acrylamides, styrene, sulfonated styrene, sulfonated alkyl acrylamides, vinylsulfonates, vinylsulfonic acid, allylsulfonic acid, methallylsulfonic acid, vinylphosphonic acid, vinylacetate, allyl alcohols, sulfonated allyl alcohols, acrylonitrile, N-vinylpyrrolidone, N-vinylformamide, N-vinylimidazole, N-vinylpyridine, and N-vinyl-2-methylimidazoline;

    wherein (a) and (b) are in the molar ratio of from 2.5;

    1 to 90;

    1.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×