Global Patent Index - EP 1033433 A3

EP 1033433 A3 20001025 - Process of protection of dyes on textiles to the attack of bleaching agents such as hydrogen peroxide, perborates and percarbonates

Title (en)

Process of protection of dyes on textiles to the attack of bleaching agents such as hydrogen peroxide, perborates and percarbonates

Title (de)

Verfahren zum Schützen von Farbstoffen auf Textilien vor dem Angriff von Bleichmitteln wie Wasserstoffperoxid, Perborate und Percarbonate

Title (fr)

Procédé de protection des colorants sur les articles textiles contre l'attaque des agents de blanchiment tels que le péroxyde d'hydrogène, les perborates ou les percarbonates

Publication

EP 1033433 A3 20001025 (EN)

Application

EP 99121860 A 19991104

Priority

PT 10222098 A 19981111

Abstract (en)

[origin: EP1033433A2] The invention refers to a process of colour protection of dyed textile goods to the attack by peroxides, either due to industrial bleaching or peroxide application in the washing machine, such as occurs when the textiles are prebleached or washed with detergents that contain peroxides such as perborates and percarbonates. The most sensitive dyes are reactive and sulphur dyes for cotton. Some dyes belonging to these classes lose colour strength and alter their hue. In this invention a new process of colour protection for dyed goods is revealed, by the application of quenchers, which when applied simultaneously with the peroxide, inhibit the peroxide attack on the dyes present in the textile fibres. The products claimed in this invention to work as efficient quenchers and colour protectors are ascorbic acid, DABCO or 1,4-diaza-2,2,2-biciclooctane and diphenylamine.

IPC 1-7

D06L 3/02; C11D 3/39; C11D 7/54; C11D 3/20; C11D 7/26

IPC 8 full level

C11D 3/20 (2006.01); C11D 3/39 (2006.01); C11D 7/26 (2006.01); C11D 7/32 (2006.01); D06L 3/02 (2006.01); D06L 4/10 (2017.01); D06L 4/12 (2017.01); D06P 5/04 (2006.01); D06P 5/06 (2006.01)

CPC (source: EP)

C11D 3/2096 (2013.01); C11D 3/28 (2013.01); C11D 3/30 (2013.01); C11D 3/39 (2013.01); C11D 3/3947 (2013.01); C11D 7/263 (2013.01); C11D 7/264 (2013.01); C11D 7/3227 (2013.01); D06L 4/10 (2016.12); D06L 4/12 (2016.12); D06P 5/04 (2013.01); D06P 5/06 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1033433 A2 20000906; EP 1033433 A3 20001025; PT 102220 A 20000531; PT 102220 B 20010531

DOCDB simple family (application)

EP 99121860 A 19991104; PT 10222098 A 19981111