Extraction of polylactams

Details Extraction of polylactams Extraction of polylactams

1973-08-28

1977-09-27

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 78S, 260 96R, C08G 6946

Patent

active

040511138

ABSTRACT:
The continuous countercurrent extraction of polylactam granules with hot water in an extraction zone for the removal of monomer and/or oligomers, the extraction zone being subdivided into subzones by at least one heating zone. The density of the extract-containing water differs by at least 0.0002 between the subzones.

REFERENCES:
patent: 3245964 (1966-04-01), Wiesner
patent: 3374207 (1968-03-01), Ryffel et al.
patent: 3598537 (1971-08-01), Kraft
patent: 3639659 (1972-02-01), Nieswandt et al.

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