Uv-resistant flocking adhesive for polymer substrates
CA 2428316 A1 · Owner: Hemel, Richard · Inventors: Wefringhaus, Rainer; Hemel, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to two-component polyurethane bonding agents based on a polyester polyol comprising an aliphatic or cycloaliphatic polyisocyanate and a hardening component based on a polyamine mixture suitable for use as UV , resistant flocking adhesives for the flocking of polymer substrates. Said adhesives can be incorporated into all known processing methods and enable flocked articles with a higher UV-resistance and good abrasion resistance to be produced.
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
- Filed October 31, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 31, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2023.
- 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.