Reactive adhesive with a low monomer content and with multistage hardening
CA 2426554 C · Owner: Guilleux, Annabelle · Inventors: Kalus, Kamil; Guilleux, Annabelle; Henke, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a solvent-free reactive adhesive or a reactive adhesive containing solvents, which has a low monomer content and which hardens in multiple stages. The reactive adhesive contains at least one polyurethane prepolymer (A) with a low monomeric polyisocyanate content (a) and at least one free functional group which is capable of reaction with a compound having at least one acid hydrogen atom especially at least one , isocyanate group; and at least one compound (B) with at least one radiationpolymerisable functional group. The reactive adhesive is suitable for producing composite materials and has a high degree of flexibility as well as good initial adhesion.
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 13, 2001 and granted June 21, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 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.