Process for the continuous trichromatic dyeing of synthetic polyamide materials
CA 1249902 A · Owner: Ciba-Geigy Investments Ltd. · Inventors: Bowles, James B.; Adam, Jean-Marie; Loew, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the continuous trichromatic dyeing of synthetic polyamide materials, Abstract:, Process for the continuous trichromatic dyeing of synthetic polyamide materials which comprises using at least one blue-dyeing fibre-reactive sulfo-containing anthraquinone dye together with at least one red-dyeing sulfocontaining azo dye and at least one yellow- or orangedyeing sulfo-containing azo dye. The process according to the invention is suitable for the continuous dyeing of synthetic polyamide materials from aqueous liquors, producing level dyeings having good fastness properties, in particular good ozone fastness.
Read the whole patent
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 February 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2006.
- 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.