Amino-functional compounds as builder/dispersants in detergent compositions
AssigneeThe Procter & Gamble Company
InventorsStephen W. Heinzman, Michael J. Eis, Molly P. Armstrong
Life of this patent
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Abstract
Amino-functional compounds are economically prepared by reacting maleic anhydride with alcohols to form a maleate or fumarate "half-ester" which is combined with certain amines, most preferably aspartate or glutamate, under conditions selected to avoid hydrolysis. At low molecular weights, the compounds herein are useful detergency builders; at progressively higher molecular weights within a specific range, combined builder/dispersant and typical dispersant properties emerge. Processes for preparing the compounds and useful detergent compositions containing them are described.
Claims9
A compound of the formula (MAO).sub.n E wherein n is an integer from 1 to about 2,500, M is H or a salt-forming cation;
- A is selected from the group consisting of 2-(sec-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. C(O)C(L)HCH.sub.2 (O)C-- wherein L is a sec-amino moiety, 2-(tert-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)C(L)HCH.sub.2 (O)C-- wherein L is a tert-amino moiety, 3-(sec-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)CH.sub.2 C(L)H(O)C-- wherein L is a sec-amino moiety, 3-(tert-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)CH.sub.2 C(L)H(O)C-- wherein L is a tert-amino moiety, and mixtures thereof;
- and E is a moiety having molecular weight in the range from about 15 to about 170,000 and is structurally characterized as the fully or partially dehydroxylated product of a dihydric or polyhydric alcohol;
- wherein said dihydric or polyhydric alcohol is selected from the group consisting of pentaerythritol;
- saccharide selected from mono, di-, oligo- and polysaccharides;
- glucoside selected from alcohol glucosides and glycol glucosides;
- alkylene glycol selected from C.sub.2 -C.sub.6 alkylene glycols;
- sorbitol;
- and mixtures thereof;
- and wherein, when L is a sec-amino moiety, L is selected from the group consisting of aspartate, glutamate, glycinate, beta-alanate, taurine, aminoethyl-sulfate, alanate and 6-aminohexanoate;
- and when L is a tert-amino moiety, L is selected from the group consisting of sarcosinate, iminodiacetate and N-methylasparatate.
A laundry detergent composition comprising a detersive surfactant and from about 0.1% to about 35% by weight of the compound of the formula (MAO).sub.n E wherein n is an interger from 1 to about 2,500, M is H or a salt-forming cation;
- A is selected from the group consisting of 2-(sec-substituted-amino)-4-oxobutanoate of the formula .sup..sym. OC(O)C(L)HCH.sub.2 (O)C-- wherein L is a sec-amino moiety, 2-(tert-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)C(L)HCH.sub.2 (O)C-- wherein L is a tert-amino moiety, 3-(sec-substituted-amino)-4-oxobutanoate of the formula .sup..GAMMA. OC(O)CH.sub.2 C(L)H(O)C-- wherein L is a sec-amino moiety, 3-(tert-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)CH.sub.2 C(L)H(O)C-- wherein L is a tert-amino moiety, and mixtures thereof;
- and E is a moiety having molecular weight in the range from about 15 to about 170,000 and is structurally characterized as the fully or partially dehydroxylated product of a dihydric or polyhydric alcohol;
- wherein said dihydric or polyhydric alcohol is selected from the group consisting of polyvinyl alcohol;
- pentaerythritol;
- saccharide selected from mono-, di-, oligo- and polysaccharides;
- glucoside selected from alcohol glucosides and glycol glucosides;
- alkylene glycol selected from C.sub.2 -C.sub.6 alkylene glycols, sorbitol;
- and mixtures thereof;
- and wherein, when L is a sec-amino moiety, L is selected from the group consisting of aspartate, glutamate, glycinate, ethanolamino, beta-alanate, taurine, aminoethyl-sulfate, alanate and 6-aminohexanoate;
- and when L is a tert-amino moiety, L is selected from the group consisting of sarcosinate, N-methylethanolamino, iminodiacetate diethanolamino and N-methylasparatate.
A compound of the formula (MAO).sub.n E wherein n is an integer from 1 to about 2,500, M is H or a salt-forming cation;
- A is selected from the group consisting of 2-(sec-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)C(L)HCH.sub.2 (O)C-- wherein L is a sec-amino moiety, 2-(tert-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)C(L)HCH.sub.2 (O)C-- wherein L is a tert-amino moiety, 3-(sec-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)CH.sub.2 C(L)H(O)C-- wherein L is a sec-amino moiety, 3-(tert-substituted-amino)-4-oxobutanoate of the formula .sup..crclbar. OC(O)CH.sub.2 --C(L)H(O)C-- wherein L is a tert-amino moiety, and mixtures thereof, and E is a moiety having molecular weight in the range from about 15 to about 170,000 and is structurally characterized as the fully or partially dehydroxylated product of pentaerythritol;
- and wherein, when L is a sec-amino moiety, L is selected from the group consisting of aspartate, glutamate, glycinate, beta-alanate, taurine, aminoethyl-sulfate, alanate and 6-aminohexanoate;
- and when L is a tert-amino moiety, L is selected from the group consisting of sarcosinate, iminodiacetate and N-methylasparatate.
Dependencies are inferred from the claim text.