Bleaching and dyeing; fluid treatment and chemical modification – Bleaching – Chemical
Patent
1987-11-05
1990-02-13
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Bleaching
Chemical
8101, 8109, D06L 302
Patent
active
049003232
ABSTRACT:
A bleaching composition comprising a partially saturated carrier and a bleaching agent prepared by first mixing the dry carrier with the dry bleaching agent and then adding water while continuing mixing to produce a moist powder. This powder is used in a tumbler with at least partially non-synthetic dyed fabrics to dry bleach or fade the dye from the fabrics. Specifically, the bleaching composition is a mix of potassium permanganate as the bleaching agent and diatomaceous earth as the carrier and is tumbled with the fabric to remove the dye from the fabric. The tumbling causes repeated contact with the bleaching agent and removes the dye in the fabric.
REFERENCES:
patent: 3048546 (1962-08-01), Lake
patent: 4130392 (1978-12-01), Diehl et al.
patent: 4536182 (1985-01-01), Tatin
patent: 4655953 (1987-04-01), Oakes
patent: 4740213 (1988-04-01), Ricci
Information sheet on the Properties and Uses of Potassium Permanganate Prepared by Carus Chemical Co.
An American Int'l. Chemical, Inc. publication entitled "Potassium Permanganate Technical-Free Flowing."
Information circular entitled "Hi-Sil ABS, Carrier for Rubber Chemicals" distributed by PPG Industries, Inc.
Pamphlet entitled, "The Nature and Safe Handling of Diatomaceous Earth," by Dicalite Division of Grefco, Inc.
American International Chemical, Inc. publication "Potassium Permanganate Technical-Free Flowing".
Dickson Glen A.
Gray Donnie R.
Lieberman Paul
McNally John F.
Ocean Wash, Inc.
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