Peroxygen bleaching and compositions therefor

Details Peroxygen bleaching and compositions therefor Peroxygen bleaching and compositions therefor

D - Textiles, Paper

06

L

8/87

D06L 3/02 (2006.01) C07C 303/00 (2006.01) C11D 3/39 (2006.01) D06L 3/04 (2006.01) C07C 309/29 (2006.01) C07C 309/30 (2006.01) C07C 309/39 (2006.01)

Patent

CA 1111609

ABSTRACT: 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 R1SO2-O-SO2R2, wherein each of R1 and R2, which may be alike or different, is an aliphatic radical selected from the class consisting of an alkyl radical of 1 to 18 carbon atoms; a cycloalkyl radical of 3 to 7 carbon atoms and a aromatic ring system selected from the class consisting of a phenyl group, taken together are an o-phenylene group, a naphthyl group, taken together are an o-napthylene 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 aromatic 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 its modern sense to signify an organic ring system having aromatic character including both aromatic hydrocarbon and heterocyclic ring systems. Also describe are dry blend composition containing the bleach bath components.

310548

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