Polyetherols produced using aluminum phosphonate catalysts
CA 2405200 A1 · Owner: Dexheimer, Edward M. · Inventors: Dexheimer, Edward M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the production of polyetherols using aluminum phosphonate catalysts is, disclosed. Reaction products of the process include various polyetherols including very low, unsaturation polyether polyols. The aluminum phosphonate catalyst preferably has a general, structure of RPO-(OAIR'R")2 wherein O represents oxygen, P represents pentavalent, phosphorous, A1 represents aluminum R comprises a hydrogen, an alkyl group or an aryl, group, and R' and R' independently comprise a halide an alkyl group, an , alkoxy group, an, aryl group or an aryloxy group. Polyols produced according to the disclosed procedure have, properties very similar to or more beneficial than those produced …
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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 September 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2024.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.