EP0316730A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Dyestuff preparations for dyeing leather, and leather auxiliary agent
Assignee: Bayer AG
•
Filing: 1988-11-09
•
Granted: —
•
Expires: 2008-11-09
Abstract
Abstract Dyestuff preparations and auxiliaries which contain 1) aliphatic polyamines or polyimines having at least one primary and one secondary amino group in the molecule, of which at least one secondary amino group is present in protonated form, and optionally 2) water-soluble sulpho-containing dyes in the form of alkali metal or ammonium salts, are used in or for the dyeing of leather. i
Inventors
- 👤 Jochen Dr. Westphal
- 👤 Harro Dr. Träubel
- 👤 Werner Dipl.-Ing. Petroll
- 👤 Volker Dr. Paulat
- 👤 Manfred Dr. Dietrich
- 👤 Karlheinz Dr. Wolf
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0072; D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/645; D06P1/653; D06P3/00; D06P3/02; D06P3/04; D06P3/32; D06P3/3206
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.