Solid ammonium polyphosphate compositions and method for the manufacture thereof
CA 1104790 A · Owner: Fertilizers & Chemicals Ltd. · Inventors: Greidinger, Dahlia S.; Pelzer, Dov; Gotesman, Dov
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to solid instant soluble ammonium polyphosphate compositions and to a method for manufacturing thereof. The new composition comprises diammonium pyrophosphate in the orthorombic form and monoammonium orthophosphate as main components being characterized by a particular powder X'ray pattern. The process involves the reaction between phosphoric acid and gaseous ammonia, obtaining a melt and solidifying the molten mass by a vigorous agitation. The ammonium polyphosphate is very useful as fertilizer in view of its high nutrient content and can be mixed and granulated with other known fertilizers. It possess excellent physical properties being non-hygroscopic even …
Read the whole patent
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 July 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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
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.