Unsymmetrical dicarboxylic esters as bleach precursors

Details Unsymmetrical dicarboxylic esters as bleach precursors Unsymmetrical dicarboxylic esters as bleach precursors

1989-11-01

1992-01-07

Stoll, Robert L.

Compositions

Oxidative bleachant, oxidant containing, or generative

Contains activator admixed with inorganic peroxide

25218638, 560 86, 560146, C09K 300, C07C 6976, C07C 6934

Patent

active

050789074

ABSTRACT:
A bleach precursor compound, its peroxygen derivative, and detergent compositions containing these materials are disclosed herein. The bleach precursors structurally comprise a pair of different diesters, one ester containing an electrically-charged functional group. Perhydrolysis of the precursor in the presence of hydrogen peroxide and a basic aqueous media generates a peroxycarboxylic acid.

REFERENCES:
patent: 2955905 (1960-10-01), Davies et al.
patent: 3076837 (1963-02-01), Mills
patent: 4283301 (1981-08-01), Diehl
patent: 4397757 (1983-08-01), Bright et al.
patent: 4412934 (1983-11-01), Chung et al.
patent: 4451664 (1984-05-01), Ranade
patent: 4486327 (1984-12-01), Murphy et al.
patent: 4751015 (1988-06-01), Humphreys et al.
patent: 4904406 (1990-02-01), Darwent et al.
patent: 4933103 (1990-06-01), Aoyagi et al.

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