Dyeing assistant and use thereof for dyeing or printing synthetic polyamide fibre material
CA 1212801 A · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Topfl, Rosmarie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dyeing assistant and use thereof for dyeing or printing synthetic polyamide fibre material Abstract of the Disclosure, The invention relates dyeing assistant comprising at least (A) a sulfonated condensation product of a hydroxyaryl compound and formaldehyde or a sulfonated N-arylmelamine derivative and, (B) a quaternary ammonium compound which contains at least one basic nitrogen atom to which are attached at least one polyglycol ether chain and at least one aliphatic radical of 10 to 22 carbon atoms, said polyglycol ether chain containing at least one grouping of the formula, (1), preferably a grouping of the formula (2), wherein one of Yl and Y2 is hydrogen and the other is the phenyl …
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 October 21, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 2003.
- 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.