Microwave-polymerizable isocyanate/epoxy resins for heavy-duty applications
CA 2135576 A1 · Owner: Demeuse, Mark · Inventors: Demeuse, Mark; Gerbelli, Renata; Parodi, Fabrizio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Crosslinkable liquid composition based on organic isocyanates and epoxy compounds, comprising the following components: (A) an organic polyisocyanate;, (B) a polyepoxide or mixture of a polyepoxide and a monoepoxide; and (C) a catalyst constituted by at least one cyanoderivative containing a quaternary nitrogen atom, which composition can be polymerized at temperatures of 40°C or higher by a process, comprising exposure thereof to a non-ionizing electromagnetic radiation having afrequency comprised in the microwave range of frequencies to obtain a solid material, endowed with an excellent combination of physical chemical and mechanical, properties.
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 November 10, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2016.
- 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.