Copolymers of keto dicarboxylates

Details Copolymers of keto dicarboxylates Copolymers of keto dicarboxylates

1979-02-02

1980-08-26

Weinblatt, Mayer

Compositions

Water-softening or purifying or scale-inhibiting agents

252DIG11, 252156, 528222, 525418, C11D 726

Patent

active

042194377

ABSTRACT:
A detergent composition is provided which comprises 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 copolymer having the following general formula ##STR1## where Y is one or more comonomers selected from the group consisting of olefins and aldehydes having from 1 to about 3 carbon atoms; n averages at least 2; p is at least 1; and M is selected from the group consisting of alkali metal, ammonium and alkanol ammonium groups having 1 to about 4 carbon atoms in the alkyl chain; R.sub.1 and R.sub.2 are individually any chemically stable group which stabilize the polymer against rapid depolymerization in alkaline solution. The copolymers are stable under laundry use conditions, but depolymerize in acid media, making the fragments more readily biodegradable in waste streams.

REFERENCES:
patent: 3742045 (1973-06-01), Lannert

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