Process for preparing amorphous particulate poly (alumino-silicate)
CA 1110041 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Mahler, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Poly(Alumino-Silicate), ABSTRACT Process for preparing particulate, porous amorphous water-insoluble poly(alumino-silicate) having a Si/Al ratio of 2:1 to 100:1, of high surfa-e area and in high yield, by mixing an aqueous solution of an alkali metal aluminate and an aqueous solution of silicic acid, allowing the aluminate and silicic acid in the resul-ant reaction mixture to polymerize to poly(alumino-silicate), and thereafter removing sufficient water from the reaction mixture to permit recovery of the particulate poly(alumino-silicate) therefrom; and particulate poly(alumino-silicate) prepared thereby.
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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 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 1998.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.