One-component epoxy resin tooling material
CA 2248730 A1 · Owner: Vantico Ag · Inventors: Hoge, James Edward; Miyazaki, Teruko Uchimi; Eadara, Rajan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention pertains to a one component curable epoxy resin composition which is storage-stable at ambient temperature and which maintains a post-cured high glass transition temperature (Tg) of above 130 ~C and a low coefficient of thermal expansion (CTE) of less than 1.7 x 10-5 cm/cm/~C over a temperature range of -30 to 125 ~C, and thus finds practical utility in tooling applications. The epoxy resin composition comprises an epoxy resin or mixture thereof, a multifunctional epoxy resin diluent a boron trichloride , amine complex, and at least one filler selected from the group consisting of a silica or a silicate. The invention also relates to the cured product.
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 March 12, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2019.
- 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.