CH528577A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Prepn of azo dyes - for textile materials
Assignee: Sandoz Ag
•
Filing: 1968-01-24
•
Granted: —
•
Expires: 1988-01-24
Abstract
Abstract Dyestuffs (I) of the azo series Suitable for the colouration of paper and acrylonitrile polymers or mixed polymers and for cotton and other cellulosic materials. Also for plastics, leather, synthetic polyamides or polyesters by suitable modification. The colours on paper exhibit good bleach, water, alcohol and light fastness. On polyacrylonitriles the dyestuffs also exhibit very good fastness properties and possess good water solubility, pH stability and good build up.
Inventors
- 👤 Helmut Dr Moser
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-31 00:10
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/02; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66
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.