EP 0676499 A3 19960911 - Method of bleaching textiles.
Title (en)
Method of bleaching textiles.
Title (de)
Verfahren zum Bleichen von Textilien.
Title (fr)
Méthode pour le blandiment des matières textiles.
Publication
Application
Priority
DE 4412390 A 19940411
Abstract (en)
[origin: EP0676499A2] A process for bleaching raw textiles comprises treating the material with an aq. bleach bath contg. H2O2 and a N-acyl-lactam of formula (I) as bleach activator. In (I) n = 3-5; and R<1> = 1-5C alkyl. Pref. the mole ratio of (H2O2):(I) in the bath is (1-5):1, pref. (1.1-1.5):1, w.r.t. active CO gps. in (I), and the bath liq. has a pH of 5-13, pref. 7-9. The process may be operated as a continuous process using an impregnation method, pref. comprising wetting and impregnating, laying down cold for 0.5-24 hrs. or heating to 95-120 degrees C. with steam, and then washing. Or a discontinuous extn. method may be used, in which the material is wetted and impregnated with the bleach in the cold or at 40-130 degrees C., the wt. of the bleach bath being 3-50 times that of the unbleached material.
IPC 1-7
IPC 8 full level
D06L 3/02 (2006.01); D06L 3/14 (2006.01); D06L 4/12 (2017.01); D06L 4/70 (2017.01)
CPC (source: EP KR)
Citation (search report)
- [X] DE 2554592 A1 19770616 - HUELS CHEMISCHE WERKE AG, et al
- [X] DE 2719235 A1 19781109 - BOSCH SIEMENS HAUSGERAETE
- [DA] DE 1291317 B 19690327 - UNILEVER NV
Designated contracting state (EPC)
AT BE CH DE DK FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0676499 A2 19951011; EP 0676499 A3 19960911; CA 2146713 A1 19951012; DE 4412390 A1 19951019; JP H0835171 A 19960206; KR 950032867 A 19951222
DOCDB simple family (application)
EP 95105011 A 19950404; CA 2146713 A 19950410; DE 4412390 A 19940411; JP 8433195 A 19950410; KR 19950008227 A 19950410