Method of bleaching dyed cotton garments

Details Method of bleaching dyed cotton garments Method of bleaching dyed cotton garments

1988-04-29

1990-10-09

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Chemical

8101, 8107, D06L 302

Patent

active

049617516

ABSTRACT:
A method is provided for selectively bleaching dyed, bleachable cotton garments. The garments are tumbled in damp condition with reuseable pre-formed solid pellets of limited porosity having abradable surfaces. The pellets comprise substantially water-insoluble cemented aggregates of mineral particles with a finely-divided particulate bleaching aent imbedded therein. The bleaching agent, which preferably is substantially uniformly distributed in the pellets, bleaches the garments by surfaces of the pellets wearing away during the garment tumbling to release the bleaching agent as the pellets contact the garments.

REFERENCES:
patent: 3535262 (1970-10-01), Hubbuch et al.
patent: 4218220 (1980-08-01), Keppler et al.
patent: 4279764 (1981-07-01), Brubaker
patent: 4460490 (1984-07-01), Barford et al.
patent: 4655782 (1987-07-01), McCallion et al.
patent: 4657784 (1987-04-01), Olson
patent: 4711748 (1987-12-01), Irwin et al.
patent: 4740213 (1988-04-01), Ricci
patent: 4795476 (1989-01-01), Bean et al.
patent: 4900323 (1990-02-01), Dickson et al.

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