Detergent composition comprising a hydrolyzable cationic surfactant and specific alkalinity source
First Claim
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1. A laundry detergent composition which comprises:
- (a) from about 2% to about 95% of a surfactant mixture consisting essentially of;
(1) a nonionic surfactant having an HLB of from about 5 to about 17; and
(2) a cationic surfactant selected from the group consisting of;
##STR28## 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 ##STR29## 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 a is 1 only when n is 1;
m is from 1 to 5;
Z1 and Z2 are each selected from the group consisting of;
##STR30## 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;
##STR31## wherein each R1 is C1 to C4 alkyl or hydroxyalkyl;
each R2 is either hydrogen or C1 to C3 alkyl;
R3 is C4 to C30 straight or branched chain alkyl, alkenyl or alkylbenzyl, R4 is C1 to C10 alkylene or alkenylene;
n is from 2 to 4;
y is from 1 to 20;
a is 0 or 1, t is 0 or 1, and a can be 1 only when t is 1;
m is from 1 to 5;
Z2 is selected from the group consisting of ##STR32## Z1 is selected from the group consisting of ##STR33## said selections being made so that ##STR34## is an alkyl or alkenyl group which can be interrupted by only structures selected from the group consisting of;
##STR35## and wherein at least one of said Z1 and Z2 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; and
(iii) mixtures thereof;
wherein the ratio of said nonionic surfactant to said cationic surfactant is in the range of from about 1;
1 to about 100;
1; and
(b) from about 1% to about 25% of an inorganic alkaline component selected from the group consisting of borax decahydrate, borax pentahydrate, sodium carbonate, and mixtures thereof, and which is present in an amount such that the detergent composition forms a solution having a pH of from about 8 to about 10 within about 3 minutes after it is placed in 100°
F. water at a concentration of about 0.15%.
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Abstract
Laundry detergent compositions offering improved removal of particulate and greasy/oily soils, containing mixtures of selected nonionic and hydrolyzable cationic surfactants, together with specifically defined alkalinity sources, are disclosed. This invention permits the formulation of compositions which are alkaline in the laundry solution, and in which hydrolyzable cationic surfactants are stable during long periods of storage.
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Citations
32 Claims
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1. A laundry detergent composition which comprises:
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(a) from about 2% to about 95% of a surfactant mixture consisting essentially of; (1) a nonionic surfactant having an HLB of from about 5 to about 17; and (2) a cationic surfactant selected from the group consisting of;
##STR28## 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 ##STR29## 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 a is 1 only when n is 1;
m is from 1 to 5;
Z1 and Z2 are each selected from the group consisting of;
##STR30## 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;
##STR31## wherein each R1 is C1 to C4 alkyl or hydroxyalkyl;
each R2 is either hydrogen or C1 to C3 alkyl;
R3 is C4 to C30 straight or branched chain alkyl, alkenyl or alkylbenzyl, R4 is C1 to C10 alkylene or alkenylene;
n is from 2 to 4;
y is from 1 to 20;
a is 0 or 1, t is 0 or 1, and a can be 1 only when t is 1;
m is from 1 to 5;
Z2 is selected from the group consisting of ##STR32## Z1 is selected from the group consisting of ##STR33## said selections being made so that ##STR34## is an alkyl or alkenyl group which can be interrupted by only structures selected from the group consisting of;
##STR35## and wherein at least one of said Z1 and Z2 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; and(iii) mixtures thereof; wherein the ratio of said nonionic surfactant to said cationic surfactant is in the range of from about 1;
1 to about 100;
1; and(b) from about 1% to about 25% of an inorganic alkaline component selected from the group consisting of borax decahydrate, borax pentahydrate, sodium carbonate, and mixtures thereof, and which is present in an amount such that the detergent composition forms a solution having a pH of from about 8 to about 10 within about 3 minutes after it is placed in 100°
F. water at a concentration of about 0.15%. - 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)
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Specification