Detergent compositions comprising polyacetal carboxylates
First Claim
1. A detergent composition comprising at least 5 percent by weight of a surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic and amphoteric surfactants;
- and at least 1 weight percent of a stabilized water-soluble polymer comprising polyacetal carboxylate segments having the structure;
##STR28## wherein M is selected from the group consisting of alkali metal, ammonium, tetralkyl ammonium and alkanol amine groups having from 1 to about 4 carbon atoms in the alkyl chain;
n averages at least 4; and
the total number of polyacetal carboxylate segments comprise at least 50 percent by weight of the total polymer.
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Abstract
Ether and acetal carboxylates useful as detergent builders to replace sodium tripolyphosphate (STP) in detergent formulations are known to the art. Certain polymeric polycarboxylates are also known to the art but all of these products suffer from either having poor builder properties or they are not readily biodegradable. According to the present invention, new and novel polyacetal carboxylates are provided which are stable under laundry use conditions, but depolymerize in acid media, making the fragments more readily biodegradable in waste streams.
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24 Claims
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1. A detergent composition comprising at least 5 percent by weight of a surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic and amphoteric surfactants;
- and at least 1 weight percent of a stabilized water-soluble polymer comprising polyacetal carboxylate segments having the structure;
##STR28## wherein M is selected from the group consisting of alkali metal, ammonium, tetralkyl ammonium and alkanol amine groups having from 1 to about 4 carbon atoms in the alkyl chain;
n averages at least 4; and
the total number of polyacetal carboxylate segments comprise at least 50 percent by weight of the total polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- and at least 1 weight percent of a stabilized water-soluble polymer comprising polyacetal carboxylate segments having the structure;
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17. A detergent composition comprising at least 5 percent by weight of a surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic and amphoteric surfactants;
- and at least 1 weight percent of a water-soluble polyacetal carboxylate having the structure;
##STR30## wherein M is selected from the group consisting of alkali metal, ammonium, tetralkyl ammonium groups and alkanol amine groups having from 1 to about 4 carbon atoms in the alkyl chain;
n averages at least 4;
R1 and R2 are individually any chemically stable group which stabilize the polyacetal carboxylate against rapid depolymerization in alkaline solution; and
the total number of polyacetal carboxylate segments comprise at least 50 percent by weight of the total polymer. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
- and at least 1 weight percent of a water-soluble polyacetal carboxylate having the structure;
Specification