Use of antimony compounds to retard catalyst deactivation in foam-forming compositions containing aromatic polyester polyols
CA 1310774 C · Owner: Arteva Technologies S.A.R.L. · Inventors: Trowell, John M.; Panchak, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Organic antimony compounds can be used to retard deactivation of urethane catalysts during storage of a B side formulation containing aromatic polyester polyols used in the, manufacture of rigid polyurethane foams. Accordingly there is described such a composition comprising an aromatic polyester polyol, a surfactant, a tertiary amine catalyst and an, organic blowing agent. The combination additionally comprises an organic antimony compound that is soluble in the polyol to retard the deactivation of the catalyst.
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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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 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
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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.