C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 6/10 (2006.01) C08F 6/00 (2006.01) C08F 6/28 (2006.01)
Patent
CA 2260948
A process has been invented for removing contaminants (including solvent) from a flowing polymer, the process, in one aspect, including dissolving a sparingly soluble stripping agent into a flowing polymer, the sparingly soluble stripping agent stripping contaminants from the flowing polymer creating a mixture of contaminants and sparingly soluble stripping agent, which flows out from the flowing polymer, and separating the mixture from the polymer. In one aspect, recyclable sparingly soluble stripping agent is recovered and re-used.
Cette invention concerne un procédé d'extraction de contaminants (solvant y compris) d'un polymère fluide qui consiste, dans une première réalisation de l'invention, à dissoudre dans un polymère fluide un agent de désorption peu soluble, ledit agent de désorption peu soluble provoquant l'extraction par désorption des contaminants du polymère fluide et produisant un mélange de contaminants et de l'agent de désorption peu soluble, qui s'écoule du polymère fluide, et enfin à séparer le mélange du polymère. Dans une réalisation, on récupère et on réutilise l'agent de désorption peu soluble recyclable.
Jimenez Pat Jr.
Lescure Bernard M.
Rosenau Michele L.
Weller Joseph P.
Wilson Lawrence D.
Smart & Biggar
The Dow Chemical Company
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