Particulate detergent composition and method for cleaning fabric

Details Particulate detergent composition and method for cleaning fabric Particulate detergent composition and method for cleaning fabric

1982-07-29

1984-07-17

Tungol, Maria Parrish

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Wave energy

8108R, 252 95, D06L 304, D06L 306

Patent

active

044603738

ABSTRACT:
A method of bleaching fabrics comprises contacting the fabrics with a liquor containing a surfactant and a chlorite such as sodium chlorite and irradiating the fabric and/or the liquor with ultra-violet light derived from an artificial source or from daylight. The liquor has a pH ideally above 8.5. A UV-light exposure equivalent to 2 hours daylight gives good results. The liquor may contain a number of other components common in bleaching products. The composition is a particulate detergent composition comprising at least 1% by weight of surfactant, 0.1-40% by weight of chlorite and less than 20% by weight of water, yielding a pH of about 8.5-11 when dispersed in water at a concentration of 0.5-10 g/l. The compositions are stable on storage and the time and degree of bleaching can be controlled by control of the exposure to UV-light.

REFERENCES:
patent: 2161045 (1939-06-01), Hirschkind et al.
patent: 3836475 (1974-09-01), Kirner
patent: 4033818 (1977-07-01), Pourrat et al.
patent: 4104190 (1978-08-01), Hartshorn

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