Continuous process for recovering polymers from their latexes
CA 1165047 A · Owner: Montedison S.P.A. · Inventors: Govoni, Gabriele; Rubichi, Gianfranco; Guardigli, Pierluigi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polymers are continuously reccvered from their latexes obtained by polymerization in emulsion by a process comprising the following steps:, A) feeding the polymeric latexes containing 10 to 50% by weight of polymer, at a temperature of from 10 to 120°C, through one or more feeding channels, to the narrow zone or to the divergent section of a nozzle in which water vapor flows at sonic or supersonic speed respectively according, to vapor/latex feeding ratios of 0.1-2 Kg of vapor/Kg of latex, where the latex is subdivided by the water vapor into a dispersion of particles; and, B) continuously feeding the dispersion obtained in step A) to a tube or an exchanger of the type tube-in-tube directly …
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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 April 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2001.
- 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.