Epoxy fortifiers based on aromatic polyhydroxyl compounds
CA 1308420 C · Owner: Garton, Andrew · Inventors: Mclean, Paul D.; Scott, Robert F.; Garton, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Paul Douglas McLean, Andrew Garton Robert Frederick Scott, ABSTRACT OF DISCLOSURE Epoxy resins have been found to be fortified (increased in strength and modulus yet not made brittle) by compounding: (a) a resin-forming polyepoxide, (b) an amine curing agent for (a) and (c) a fortifier for (a) + (b) comprising the reaction product of (i) an aromatic polyhydroxy compound and (ii) a diepoxide with one epoxy group less reactive than the other:, and heat curing the mixture. Strengths as high as 140 MPa and moduli as high as 4500 MPa have been attained with a ductile mode of failure.
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 October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2009.
- 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.