Bleaching and dyeing; fluid treatment and chemical modification – Bleaching – Chemical
Patent
1978-10-30
1981-11-17
Schofer, Joseph L.
Bleaching and dyeing; fluid treatment and chemical modification
Bleaching
Chemical
252 95, 252 97, 252 99, 252102, 252186, C11D 756, C11D 754, C11D 3395
Patent
active
043008976
ABSTRACT:
A method of bleaching fabrics, effective to remove stains and safe for dyed fabrics, includes bleaching such a fabric in an aqueous medium containing bleaching composition including a water soluble peroxymonosulfate bleach, a water soluble inorganic bromide which promotes the bleaching activity of the peroxymonosulfate and an N-hydrogen compound of a certain type, such as para-tolulenesulfonamide or 5,5 dimethylhydantoin which inhibits destruction of dyes and overbleaching of dyed materials while stains to be bleached are effectively removed. Washing may also be effected with the bleaching in which case bleaching detergent composition are employed, which also contain a normally solid, water synthetic organic detergent, such as an anionic detergent, which may be a sodium linear higher alkylbenzenesulfonate or a higher fatty alcohol polyethylene oxide condensate, or a mixture thereof. Such compositions and the aqueous washing media may also include a builder salt.
REFERENCES:
patent: 2809937 (1967-10-01), Gray
patent: 3177148 (1965-04-01), Bright et al.
patent: 3458446 (1969-07-01), Diaz
patent: 3556711 (1971-01-01), Stalter
patent: 3583924 (1971-06-01), Demangeon
patent: 3637339 (1972-01-01), Gray
patent: 3779931 (1973-12-01), Fries et al.
patent: 3982892 (1976-09-01), Gray
patent: 4028263 (1977-06-01), Gray
patent: 4146496 (1957-10-01), Gray
Colgate-Palmolive Company
Grill Murray M.
Kramer Raymond F.
Lilling Herbert J.
Schofer Joseph L.
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