US 5,182,045 AGranted

Late peracid precursors

AssigneeThe Clorox Company

InventorsRichard R. Rowland, Ronald A. Fong, Richard J. Wiersema, Alfred G. Zielske

Life of this patent

Estimating the term…

Loading patent…

Abstract

Polyglycolate compounds are provided having the general structure: ##STR1## wherein n is an integer from 2 to about 10; R is C.sub.1-20 linear or branched alkyl, alkoxylated alkyl, cycloalkyl, aryl, alkylaryl, substituted aryl; R' and R" are independently H, C.sub.1-20 alkyl, aryl, C.sub.1-20 alkylaryl, substituted aryl, and NR.sub.3.sup..alpha.+, wherein R.sup..alpha. is C.sub.1-30 alkyl; and L is a leaving group displaceable in a peroxygen bleaching solution by perhydroxide anion. When this compound is combined with a source of peroxygen in aqueous solution, then a plurality of stain removing peracids are formed. Such peracids are formed substantially sequentially beginning with the carbonyl adjacent to the leaving group L. Thus, a first stain removing peracid having the structure ##STR2## will be formed in amounts approaching quantitative yield.

Claims14

Dependent claims

A bleaching composition comprising:

(a) a peracid precursor having the general structure:
##STR23## wherein n is an integer from 2 to about 10;
R is C.sub.1-20 linear or branched alkyl, alkoxylated alkyl, cycloalkyl, aryl, alkylaryl, substituted aryl;
R' and R" are independently H, C.sub.1-20 alkyl, aryl, C.sub.1-20 alkylaryl, substituted aryl, and NR.sub.3.sup..alpha.+, wherein R.sup..alpha. is C.sub.1-30 alkyl;
and L is a leaving group selected from the group consisting of:
##STR24## wherein Y and Z are individually H, SO.sub.3 M, CO.sub.2 M, SO.sub.4 M, OH, halo substituent, OR.sup.2, R.sup.3, NR.sub.3.sup.4 X, and mixtures thereof, wherein M is an alkali metal or alkaline earth metal counterion, R.sup.2 is C.sub.1-20 alkyl, R.sup.3 is C.sub.1-6 alkyl, R.sup.4 is C.sub.1-30 alkyl and X is a counterpart ion thereto, and Y and Z can be the same or different;
(ii) halide;
--ONR.sup.6, wherein R.sup.6 contains at least one carbon which is singly or doubly bonded directly to N;
##STR25## wherein R.sup.18 is C.sub.1-10 alkl;
and (v) mixtures thereof;
and
(b) bleach-effective amount of a peroxygen source.

9 more elements

Dependencies are inferred from the claim text.