Preparation of a hexahydrated sodium tripolyphosphate with a high absorption capability
CA 1258960 A · Owner: Rhone-Poulenc Chimie De Base · Inventors: Joubert, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a hexahydrated sodium tripolyphosphate with a high absorption capability and a process for the preparation thereof. The tripolyphosphate is prepared by a process which includes taking a first anhydrous sodium tripolyphosphate of which the major part is in the form of phase 1 and spraying water or an aqueous medium thereover; taking a second anhydrous sodium tripolyphosphate essentially in the form of phase 2 and spraying water or an aqueous medium thereover; mixing the two tripolyphosphates thus treated; introducing the resulting mixture into water or an aqueous medium to form a suspension; and drying said suspension thereby producing hexahydrated sodium …
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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 September 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 5, 2006.
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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.