Process for the reactive dyeing and printing of fibrous materials containing hydroxy groups
CA 1064204 A · Owner: Hoechst Aktiengesellschaft · Inventors: Meininger, Fritz; Gies, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel water-soluble organic dyes containing at least one phosphonic acid monofluoride group and preferably, at least, one ionic water-solubilizing group in a linked form can excellently be used according to the process of the invention both in a neutral and alkaline range for the dyeing and printing of fibrous material containing hydroxy groups and, they provide dyeings having a good color intensity and good fastness properties.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 16, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.