Polyolefin fibers containing basic pigments and process for preparing same
CA 1069661 A · Owner: Hoechst Aktiengesellschaft · Inventors: Gordon, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure: Hydrophilic polyolefin fibers containing more than 50 weight % of a basic pigment, are obtained if a mixture of polyolefin, a solvent for this polyolefin, a basic pigment a hy-, drophilization agent, water and an organic acid flows from a pressure vessel through a nozzle into a low-pressure chamber. The thus obtained fibers may be used for preparing synthetic paper without requiring much expenditure for work-up.
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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.