Process for producing sodium percarbonate from a soda solution of suspension
CA 1106136 A · Owner: Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler · Inventors: Schuster, Hubert; Knippschild, Gerd; Klebe, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides in a process for producing a compact coarse sodium percarbonate by reacting hydrogen percarbonate with sodium carbonate at 10 to 20°C starting with a solution which contains sodium carbonate and is saturated with sodium percarbonate, in the presence of 100 to 200 g of sodium chloride per litre of solution stabilizers of, active oxygen, and sodium hexameta-phosphate the improvement, in which is said solution which contains 0.1 to 1.9 g of sodium, hexameta-phosphate per litre of solution the ratio of soda to, sodium hexameta-phosphate is adjusted to a value from 65:1 to 500:1, and the soda solution or suspension thus produced is mixed with an amount of hydrogen …
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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 August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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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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.