Detergent composition consisting essentially of biodegradable nonionic surfactant and cationic surfactant containing ester or amide
First Claim
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1. A detergent composition, containing no more than about 20% of phosphate builder materials, having a pH of no greater than about 11 in the laundry solution, and which is substantially free of oily hydrocarbon materials, comprising from about 5% to about 100% of a surfactant mixture consisting essentially of:
- (a) a biodegradable nonionic surfactant having the formula R(OC2 H4)n OH wherein R is a primary or secondary alkyl chain of from about 8 to about 22 carbon atoms and n is an average of from about 2 to about 12, having an HLB of from about 5 to about 17; and
(b) a cationic surfactant having the formula ##STR40## wherein each R1 is C1 to C4 alkyl or hydroxyalkyl;
R2 is C5 to C30 straight or branched chain alkyl, alkenyl, alkylbenzyl, or alkyl phenyl group or ##STR41## wherein s is from 0 to 5;
R3 is C1 to C20 alkylene or alkenylene;
a is 0 or 1, n is 0 or 1, and n is 1 when a is 1, m is from 1 to 5;
Z1 and Z2 are each selected from the group consisting of;
##STR42## and wherein at least one of said groups is selected from the group consisting of ester, reverse ester, amide and reverse amide; and
X is an anion which makes the surfactant at least water-dispersible;
wherein the ratio of said nonionic surfactant to said cationic surfactant is in the range of from about 1;
1 to about 100;
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Abstract
Laundry detergent compositions containing specific mixtures of selected nonionic surfactants and specifically defined biodegradable cationic surfactants are disclosed. These compositions are unusually effective in removing particulate soils and greasy/oily soils from fabrics, and, in addition, provide the fabrics with fabric softening, static control, and dye transfer inhibition benefits.
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Citations
36 Claims
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1. A detergent composition, containing no more than about 20% of phosphate builder materials, having a pH of no greater than about 11 in the laundry solution, and which is substantially free of oily hydrocarbon materials, comprising from about 5% to about 100% of a surfactant mixture consisting essentially of:
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(a) a biodegradable nonionic surfactant having the formula R(OC2 H4)n OH wherein R is a primary or secondary alkyl chain of from about 8 to about 22 carbon atoms and n is an average of from about 2 to about 12, having an HLB of from about 5 to about 17; and (b) a cationic surfactant having the formula ##STR40## wherein each R1 is C1 to C4 alkyl or hydroxyalkyl;
R2 is C5 to C30 straight or branched chain alkyl, alkenyl, alkylbenzyl, or alkyl phenyl group or ##STR41## wherein s is from 0 to 5;
R3 is C1 to C20 alkylene or alkenylene;
a is 0 or 1, n is 0 or 1, and n is 1 when a is 1, m is from 1 to 5;
Z1 and Z2 are each selected from the group consisting of;
##STR42## and wherein at least one of said groups is selected from the group consisting of ester, reverse ester, amide and reverse amide; and
X is an anion which makes the surfactant at least water-dispersible;wherein the ratio of said nonionic surfactant to said cationic surfactant is in the range of from about 1;
1 to about 100;
1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification