Ester perhydrolysis by preconcentration of ingredients

Details Ester perhydrolysis by preconcentration of ingredients Ester perhydrolysis by preconcentration of ingredients

1990-09-14

1992-09-01

Lovering, Richard D.

Compositions

Oxidative bleachant, oxidant containing, or generative

Contains activator admixed with inorganic peroxide

25218639, C09K 300

Patent

active

051436418

ABSTRACT:
A bleaching composition in concentrated form is provided that includes a peroxygen compound and an organic bleach precursor. The precursor is selected from esters and carbonates having a leaving group whose conjugate acid has a pKa of greater than 13. Particularly preferred are quaternary ammonium functionalized compounds. Absent preconcentration of the components, poor bleaching would result. Concentrated compositions may be achieved through use of encapsulation or by way of a sachet.

REFERENCES:
patent: 3256198 (1966-06-01), Matzner
patent: 3272750 (1966-09-01), Chase
patent: 4367156 (1983-01-01), Dieh
patent: 4412934 (1983-11-01), Chung et al.
patent: 4486327 (1984-12-01), Murphy et al.
patent: 4536314 (1985-08-01), Hardy et al.
patent: 4751015 (1988-06-01), Humphreys et al.
patent: 4818426 (1989-04-01), Humphreys et al.

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