Acrylic-modified epoxy resin adhesive compositions with improved rheological control
CA 2072090 A1 · Owner: Hoffman, Dwight K. · Inventors: Rose, Gene D.; Hoffman, Dwight K.; Ersun-Hallsby, Yasemin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thixotropic adhesive composition exhibiting good sag resistance is prepared comprising a mixture of a polymer-modified epoxy resin and a rheological control agent. The polymer-modified epoxy resin is preferably a dispersion of acrylic elastomer in an epoxy resin in which the acrylic elastomer particles have added hydroxyl functionality which interacts favorably with rheological control agents, such as fumed silica. Acrylic epoxy resin dispersions containing added hydroxyl functionality give improved rheological control.
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 7, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2013.
- 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.