Title (en)

USE OF MIXTURES OF OPTICAL BRIGHTENERS TO IMPROVE THE WASH FASTNESS OF BRIGHTENED TEXTILES

Title (de)

VERWENDUNG VON MISCHUNGEN VON OPTISCHEN AUFHELLERN ZUR VERBESSERUNG DER WASCHECHTHEIT AUFGEHELLTER TEXTILIEN

Title (fr)

UTILISATION DE MELANGES D'AZURANTS OPTIQUES POUR AMELIORER LA TENUE AU LAVAGE DE TEXTILES AZURES

Publication

EP 1266064 A2 20021218 (DE)

Application

EP 01905707 A 20010130

Priority

• DE 10005595 A 20000209
• EP 0100967 W 20010130

Abstract (en)

[origin: WO0159198A2] The invention relates to the use of a mixture of optical brighteners comprising A) at least one anionic brightener selected from the group consisting of pyrazolin derivatives comprising sulfonic acid or sulfonate groups, and anionic brighteners as represented in formulae 1-12, in addition to B) at least one anionic brightener which is a derivative of stilbene, respectively comprising a sulfonic acid or sulfonate group in both phenyl groups and which is also substituted by an aromatic heterocycle which includes nitrogen in both phenyl groups of stilbene. The inventive mixture is used to produce brightened polyamide and/or polyurethane fibers exhibiting improved wash fastness with respect to said optical brightening.

IPC 1-7

D06L 3/12

IPC 8 full level

C09B 57/00 (2006.01); C09B 67/22 (2006.01); C11D 3/42 (2006.01); D06L 3/12 (2006.01); D06L 4/621 (2017.01); D06L 4/65 (2017.01); D06P 1/00 (2006.01); D06P 3/24 (2006.01)

CPC (source: EP US)

D06L 4/621 (2016.12 - EP US); D06L 4/65 (2016.12 - EP US)

Citation (search report)

See references of WO 0159198A2

Designated contracting state (EPC)

DE ES FR GB IT

DOCDB simple family (publication)

WO 0159198 A2 20010816; WO 0159198 A3 20020117; CN 1398307 A 20030219; DE 10005595 A1 20010823; EP 1266064 A2 20021218; JP 2003522843 A 20030729; US 2001031806 A1 20011018

DOCDB simple family (application)

EP 0100967 W 20010130; CN 01804733 A 20010130; DE 10005595 A 20000209; EP 01905707 A 20010130; JP 2001558524 A 20010130; US 78246301 A 20010208