Manufacture of polyamides

Details Manufacture of polyamides Manufacture of polyamides

C - Chemistry, Metallurgy

08

G

402/223, 402/229

C08G 69/46 (2006.01) C08G 69/16 (2006.01) C08J 11/04 (2006.01)

Patent

CA 1052941

ABSTRACT OF THE DISCLOSURE: A process for the manufac- ture of polyamides from .epsilon.-caprolactam and/or other polyamide- forming starting compounds by polymerization and subsequent extraction of the polymer. The extract containing solvent, monomer and oligomers is concentrated in the absence of atmospheric oxygen, the surfaces which come into contact with the extract being made of materials which are inert under the conditions of the concentration process, and the concentrate, without further purification or separa- tion, is polymerized by itself or together with other polyamide-forming starting compounds.

243057

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