Constant composition recycle of nylon 6 polymerization wash...

Details Constant composition recycle of nylon 6 polymerization wash... Constant composition recycle of nylon 6 polymerization wash...

C - Chemistry, Metallurgy

08

G

402/245

C08G 69/46 (2006.01) C08G 69/16 (2006.01)

Patent

CA 2038791

A process for preparing polyamides of substantially constant cyclic dimer concentration from amide monomers includes extracting unreacted amide monomers and oligomers, reducing the oligomer concentration relative to the concentration of total extractants and then returning the extract to the reaction vessel in substantially the same total proportion as extracted.

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