Polymer recovery

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...

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Details

528500, C08F 610

Patent

active

045046549

ABSTRACT:
An improved process is provided for the recovery of a polymer from a solution thereof in an organic solvent by contact with steam and water wherein economics in the use of energy are achieved by controlling the contact of said solution with steam and water to provide a predetermined amount of residual solvent in the polymer, said contact being under conditions of controlled temperature and pressure. Such a process may be used for the recovery, for example, of polybutadiene from a solution in a benzene-butene-1 mixture.

REFERENCES:
patent: 3462347 (1969-04-01), Chapman
patent: 3590026 (1971-06-01), Carlson
patent: 3772262 (1973-11-01), Clement
patent: 4347098 (1982-08-01), Hubby
patent: 4391972 (1983-07-01), Kaiser

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