Process for the preparation of polyamides

Details Process for the preparation of polyamides Process for the preparation of polyamides

C - Chemistry, Metallurgy

08

G

C08G 69/36 (2006.01) C08G 69/14 (2006.01) C08L 77/10 (2006.01)

Patent

CA 2086504

New process for the manufacture of polyamides compris- ing the stages of: (i) reaction of 10 to 90% by weight of the aliphatic and/or cycloaliphatic and/or aromatic-aliphatic diamine units (c) with the lactam and/or corresponding amino acid units (a) or the substantially stoichiometric combina- tion of one or more aliphatic diamine(s) and of one or more dicarboxylic aliphatic acid(s) and with the aro- matic diacid units (b); and (ii) reaction of the remainder of the aliphatic and/or cycloaliphatic and/or aromatic-aliphatic diamine units (c) with the oligomer produced in stage (i) in one or more substages.

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