Verfahren zum Bleichen von Amidgruppen enthaltendem Fasergut

1336799 Bleaching BADISCHE ANILIN & SODA FABRIK AG 11 Aug 1971 [12 Aug 1970] 37677/71 Heading D1P Fibrous material based on amide, group containing constituents e.g. wool, silk, bristles, polycaprolactam and polyhexamethylene adipamide is bleached by treatment with an aqueous solution of the zin...

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Bibliographic Details
Main Author SCHMIDT,OSWALD,DR
Format Patent
LanguageGerman
Published 17.02.1972
Subjects
BLEACHING LEATHER OR FURS
DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS,YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
LAUNDERING
TEXTILES
TREATMENT OF TEXTILES OR THE LIKE
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Summary:1336799 Bleaching BADISCHE ANILIN & SODA FABRIK AG 11 Aug 1971 [12 Aug 1970] 37677/71 Heading D1P Fibrous material based on amide, group containing constituents e.g. wool, silk, bristles, polycaprolactam and polyhexamethylene adipamide is bleached by treatment with an aqueous solution of the zinc salt of hydroxymethane sulphinic acid and a complexing agent e.g. the sodium salts of EDTA and nitrilotriacetic acid and polymeric phosphates at 70-100‹C and p.H 2-4. The aqueous solution may contain formaldehyde, trioxane, paraformaldehyde and hexamethylene tetramine as stabilizer. The p.H is adjusted with formic, acetic, sulphuric or phosphoric acid.
Bibliography:Application Number: DE19702039992