Glycolate ester peracid precursors

Reference Number: N 03-07

Inventors: Fong, Ronald A.; Lewis, Sheldon N.; Wiersema, Richard J.; Zielske, Alfred G.

Owner: NISTAC

USPTO Link: 4959187

Invention Summary

The present invention provides, in one embodiment, a perhydrolysis system comprising:

(a) a bleaching effective amount of a peracid precursor compound having the general structure ##STR8## wherein R is C.sub.1 --C.sub.20 linear or branched alkyl, alkylethoxylated. cycloalkyl, aryl, 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.a+, wherein R.sup.a is C.sub.1-30 ; and L is essentially any useful leaving group which can be displaced in a peroxygen bleaching solution by perhydroxide anion; and

(b) a bleach effective amount of a compound which provides hydrogen peroxide in aqueous media.

The invention further provides a novel peracid having the structure ##STR9## wherein R, R', and R" are as defined above.

The invention also provides novel peracid precursors having the structure ##STR10## in which L is selected from the group consisting essentially of: phenol derivatives; oxynitrogen groups (amine oxide, hydroxyimide and oxime groups); and carboxylic acids (from mixed esters).

In a further embodiment, the invention provides a bleaching composition comprising:

(a) a bleach effective amount of a compound including the substituent ##STR11## (b) a bleach effective amount of a source of hydrogen peroxide.