Epoxy resin composition
CA 2079648 A1 · Owner: Huntsman Corporation · Inventors: Sellstrom, Kathy B.; Speranza, George P.; Cuscurida, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
EPOXY RESIN COMPOSITION, (D#80,952-F), ABSTRACT OF THE DISCLOSURE The invention is an epoxy resin composition. Diol initiators are reacted with alkylene oxide and 1 to 5 wt % epoxy resin. The epoxy resin is added internally along the length of, the diol chain to yield a modified polyol of molecular weight 2000 to 5000. The modified polyol is subjected to reductive amination to yield a polyamine. This polyamine is mixed with an epoxy base resin and cured to product epoxy resins demonstrating improved strength and adhesion. E:\JACKIE\80952.APP
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 1, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2014.
- 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.