Process for the continuous dyeing of fabric webs
CA 1192007 A · Owner: Hoechst Aktiengesellschaft · Inventors: Von Der Eltz, Hans-Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1. A process for the continuous dyeing of fabric webs, in which the fabric web is impregnated at a temperature between 20 and 95°C with an aqueous liquor which contains dissolved and/or dispersed dyestuffs and squeezed and the dyestuffs are fixed in a steam/air mixture which, comprises fixing the dyestuff without the impregnated fabric having been dried at an intermediate stage keeping, the dry temperature of the steam/air mixture between 110 and 140°C, adjusting the steam content of the steam air mixture in such a way that the wet temperature of the moist fabric web is between 50 and 95°C and fixing the, dyestuffs for at least 20 seconds.
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 August 20, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2002.
- 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.