Catalyst systems for the preparation of foams containing isocyanurate and urethane linkages
CA 1281702 C · Owner: Eling, Berend · Inventors: Debien, Chris; Eling, Berend; Cunningham, Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel catalyst system is provided for the preparation of polymer foams containing isocyanurate and urethane linkages. The catalyst system based on an alkali metal or tetraalkylammonium carboxylate and a group IIa metal carboxylate. The resulting isocyanurate foams have improved rise profile and excellent cure times and are adaptable for use in the manufacture of continuously made products.
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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
- Granted March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2008.
- 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.