Adhesive of epoxy resin, diene copolymer-modified epoxy resin, phenolic-terminated elastomeric toughener and polyester segment polymer
CA 2568290 C · Owner: Dow Global Technologies Inc. · Inventors: Lutz, Andreas; Frick, Karsten; Flueckiger, Jeannine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an epoxy adhesive composition comprising a) a first epoxy resin, b) a second epoxy resin modified with a copolymer based on a 1,3-diene and a polar, ethylenically unsaturated comonomer c) a toughener , and d) a polymer comprising a polyester segment said polymer being at least , partially crystalline at room temperature and having a softening temperature in the range of 40~ to 125~C. The invention further relates to the use of such an epoxy adhesive composition for bonding parts of a vehicle without prehardening of the epoxy adhesive composition and to a vehicle parts of , which are bonded by the epoxy adhesive composition.
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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 May 27, 2005 and granted January 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.