公开(公告)号：US20230407007A1

公开(公告)日：2023-12-21

申请号：US18038037

申请日：2021-11-15

Applicant: BASF SE

Inventor： Rolf MINKWITZ ,  Silke BIEDASEK ,  Thomas KONSCHOLKA ,  Cesar G. ORTIZ

IPC: C08G69/16 ,  C08J5/18

CPC classification number: C08G69/16 ,  C08J5/18 ,  C08J2377/02

Abstract: A process for continuously preparing copolyamides by copolymerizing at least one lactam (A) and monomers (M), comprising the steps of a) mixing at least one lactam (A) with monomers (M) at a temperature of 60 to 150° C. and b) passing the mixture obtained in step a) from the top downward through a vertical polymerization tube at polyamide-forming temperatures to obtain a copolyamide, wherein the monomers (M) comprise at least one C32-C40 dimer acid (B1) and at least one C4-C12 diamine (B2) and optionally at least one C4-C20 diacid (B3).