Manufacture of polyamide film
CA 1056085 A · Owner: Basf Aktiengesellschaft · Inventors: Weiss, Hans-Peter; Simon, Georg N.; Zahn, Erwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film of poly(hexamethylenediamine adipate) (nylon 6,6) having a relative viscosity of from 2.4 to 4.0 and which contains from 0.01 to 2 per cent by weight of an ester of an octanol with p-hydroxybenzoic acid. The nylon 6,6 films obtained by the process of the invention are, surprisingly very, transparent and free from blotches and streaks and are, distinguished by very high uniformity and constancy of film thickness, of optical and mechanical properties and of surface, quality.
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 June 5, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 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.