The Clorox Company

Other

E.i. Dupont De Nemours and Company

Ronald A Fong

Alfred G Zielske

Richard J Wiersema

Richard R Rowland

Stephen Bradford Kong

Sheldon N Lewis

Donald J Dumas

David A Peterson

George C Sonnichsen

Bijan Amini

Victor M Casella

Alfred G Zielski

Antimicrobial hard surface cleaner comprising an ethoxylated quaternary ammonium surfactant

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 peroxgen 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.

Polyglycolate peracid precursors

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.

An improved process for preparing phenyl esters of alkanoyloxyacetic acids in which phenyl chloroacetate is reacted with the salt of a carboxylic acid.

Process for preparing phenyl esters of substituted acids

Late peracid precursors

A perhydrolysis system is provided which includes peroxyacid precursors and a source of peroxygen. Upon dissolution in water these compositions provide high yields of a novel peroxyacid having the structure ##STR1## where R is hydrogen or an alkyl of not more than 5 carbon atoms. The precursors may include hydroxyl nitrogen derivatives as leaving groups, since the .alpha.-substituted phenoxy moiety enhances carbonyl reactivity toward perhydroxyl anion.

Phenoxyacetate peracid precursors and perhydrolysis systems therewith

The invention provides novel peracid precursors representative of which is the structure: ##STR1## wherein R.sup.1 is alkyl of 1 to 20 carbon atoms; R.sup.2 is OH, --O--R.sup.3, or ##STR2## and X.sup.1, X.sup.2, Y and Z are individually selected from H, SO.sub.3.sup.--, CO.sub.2.sup.--, NO.sub.2, NR.sub.4.sup.5+, halogen, R.sup.6 and mixtures thereof;

Bleaching with phenylene diester peracid precursors

The invention provides novel bleaching compositions comprising peracid precursors with the general structure ##STR1## with R, R', R' and L as defined in the specification. Novel peracids and precursors are also herein disclosed. These peracid precursors provide new, proficient and cost-effective compounds for fabric bleaching.

Glycolate ester peracid precursors

A perhydrolysis system is provided which includes peroxyacid precursors and a source of peroxygen. Upon dissolution in water these compositions provide high yields of a novel peroxyacid having the structure ##STR1## where R is hydrogen or an alkyl of not more than 5 carbon atoms. The precursor may include hydroxyl nitrogen derivatives as leaving groups, since the .alpha.-substituted phenoxy moiety enhances carbonyl reactivity toward perhydroxyl anion.

Phenoxyacetate peracid precursors

The present invention provides a method of esterifying dihydroxybenzene starting materials to synthesize unsymmetrical diesters in high yield. Many of the resultant unsymmetrical diesters are useful in dry bleaching compositions. The method can be practiced by selectively monoacylating a dihydroxybenzene starting material with an acid anhydride to form an intermediate monoester having the structure ##STR1## which is then acylated to form a diester reaction product having the structure ##STR2## wherein R.sub.1 is greater than R.sub.3 (and both R.sub.1 and R.sub.3 are alkyl groups) and X is a substituent group which does not participate in the esterification (or which can have a protecting group thereon).

Method for esterifying dihydroxybenzenes

A dry bleaching composition, particularly useful for low temperature applications, is provided in which generation of hypochlorite by reaction between a peroxygen bleaching agent and a chloride salt is promoted by an aromatic diol or oxidized aromatic diol activator. Preferred activators are in ester form and provide hypochlorite generation at levels of less than about 20 ppm for at least about the first two minutes following dissolution of the compositions in aqueous solution, but rising to effective bleaching levels within a reasonable time thereafter. The initially low hypochlorite level assists in the functioning of laundry additives, such as fabric brighteners.

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Modesto, CA, United States of America

Ronald A Fong