Process for the preparation of a zsm-5 aluminosilicate zeolite
CA 1289935 C · Owner: Winquist, Bruce Herman Charles · Inventors: Winquist, Bruce Herman Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing a ZSM-5 aluminosilicate zeolite from a silica source, an alumina source water, an alkali metal phosphate and an alkali metal fluoride which comprises crystallizing, at crystallizing conditions an aqueous crystallizing gel comprising colloidal silica and colloidal alumina in a molar ratio of more than 20 moles of colloidal silica per mole of colloidal alumina alkali metal phosphate in a molar ratio of 1.8 to 2.7 moles of said phosphate per mole of colloidal alumina and alkali metal fluoride in a molar ratio between 0.5 and 2.1 moles of said fluoride per mole of colloidal alumina.
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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 October 1, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 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.