Title (en)

PROCESS AND AGENT FOR THE SINGLE-BATH REOXIDATION AND SOAPING OF VAT OR SULPHUR VAT DYEINGS

Publication

EP 0214580 A3 19900307 (DE)

Application

EP 86112030 A 19860830

Priority

DE 3532341 A 19850911

Abstract (en)

[origin: US4723961A] The alkaline reoxidation of vat and sulfur vat dyes by means of hydrogen peroxide is difficult to control and to keep constant. By using agents which split off hypochlorite in the heat, for example sodium N-chloro-p-toluenesulfonamide, at pH values above 8 it is possible according to the invention even to reoxidize reliably combinations of these dyes having different oxidation behaviors. At the same time it became possible to combine the necessary soaping process with reoxidation.

IPC 1-7

D06P 1/22; D06P 1/30

IPC 8 full level

D06P 1/22 (2006.01); D06P 1/30 (2006.01); D06P 1/32 (2006.01); D06P 3/60 (2006.01); D06P 3/82 (2006.01); D06P 5/04 (2006.01)

CPC (source: EP US)

D06P 1/222 (2013.01 - EP US); D06P 1/30 (2013.01 - EP US); Y10S 8/904 (2013.01 - US); Y10S 8/908 (2013.01 - US); Y10S 8/918 (2013.01 - US)

Citation (search report)

• [Y] EP 0121227 A2 19841010 - HOECHST AG [DE]
• [Y] FR 2372269 A1 19780623 - HOECHST AG [DE]
• [A] DE 2702710 A1 19770929 - SANDOZ AG
• [A] US 2880219 A 19590331 - BURNETTE LLEWELLYN W, et al
• [YD] ULLMANNS ENCYCLOPAEDIE DER TECHNISCHEN CHEMIE, Auflage 4, Band 9, Seiten 384-392

Designated contracting state (EPC)

CH DE FR GB IT LI

DOCDB simple family (publication)

EP 0214580 A2 19870318; EP 0214580 A3 19900307; DE 3532341 A1 19870319; JP S6278284 A 19870410; US 4723961 A 19880209

DOCDB simple family (application)

EP 86112030 A 19860830; DE 3532341 A 19850911; JP 21179686 A 19860910; US 90563286 A 19860909