Fmc Corporation

John H Blumbergs

Joseph H Finley

Fred Richard Scholer

Burton M Baum

Clifford A Erickson

Michael J McCarthy

John M Polkowski

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an heterocyclic sulfonate ester wherein the heterocyclic moiety includes a 5 to 6 membered heterocyclic ring containing 1 to 3 hetero atoms selected from the class consisting of --N--, --O-- and --S-- and the sulfonic acid is selected from the class consisting of an alkanesulfonic acid of 1 to 18 carbon atoms and an arenesulfonic acid of the benzene and naphthalene series. Also described are dry blend compositions containing the activator and peroxygen.

Peroxygen bleaching and compositions therefor

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator, an anhydride of a carboxylic acid with a sulfonic acid selected from the formulae consisting of

Carboxylic/sulfonic anhydrides as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in peroxygen bleach bath containing as a peroxygen activator a sulfonic anhydride of the formula:

Sulfonic anhydrides as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator a sulfonyl oxime. Also described are dry blend compositions containing the bleach bath components.

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an oxybis(diacyloxyborane) of the formula: ##STR1## wherein the acyloxy is derived from a carboxylic acid selected from the class consisting of saturated aliphatic carboxylic acids of 1 to 18 carbon atoms and aromatic carboxylic acids of the benzene and naphthalene series. Also described are dry blend compositions containing the bleach bath components.

Oxybis(diacyloxyboranes) as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator a phenyl sulfonate ester of the formula: ##STR1## WHEREIN R is selected from the class consisting of a hydrocarbon radical of 1 to 16 carbon atoms and a heterocyclic radical having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; X is hydrogen or at least one electron withdrawing substituent and n is an integer of from 1 to 5. Also described are dry blend compositions containing the bleach bath components.

Phenyl sulfonate esters as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an organophosphorus azide of the formulae:

Organophosphorus azides as peroxygen activators

A process for the low temperature removal of soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an aromatic sulfonyl azide of the formula:

Aromatic sulfonyl azides as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator a disulfone of the formula

Disulfones as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an aromatic sulfonic anhydride of the formula RSO.sub.2 --O--SO.sub.2 R, wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine and bromine. Aromatic is used herein in its modern sense to signify an organic ring system having aromatic character including both aromatic hydrocarbon and heterocyclic ring systems. Also described are dry blend compositions containing the bleach bath components.

Aromatic sulfonic anhydrides as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an aromatic sulfonyl fluoride of the formula ArSO.sub.2 F, wherein Ar is an aromatic ring system selected from the class consisting of a phenyl group, a naphthyl group, and a heterocyclic group having 1 to 2 rings, each ring containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, aliphatic acyl of 1 to 16 carbon atoms, benzamido, benzoyl, chlorine and bromine. Also described are dry blend compositions containing the bleach bath components.

Aromatic sulfonyl fluorides as peroxygen activators

A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator a sulfonic anhydride of the formula:

Sulfonic anhydrides in peroxygen bleaching

Mixed carboxylic/sulfonic anhydrides in peroxygen bleaching

Carboxymethyloxysuccinic acid is prepared by acidifying the calcium salt of carboxymethyloxysuccinic acid with sulfuric acid at a temperature of 40.degree.C to 80.degree.C; filtering off the CaSO.sub.4 .2H.sub.2 O by-product and concentrating the filtrate to give the purified acid. The calcium salt of carboxymethoxysuccinic acid is formed by reacting maleic acid and glycolic acid in aqueous media containing excess calcium hydroxide.

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Highland Park, NJ, United States of America

John H Blumbergs