公开(公告)号：CA2913382A1

公开(公告)日：2014-12-18

申请号：CA2913382

申请日：2014-06-11

Applicant: BASF SE

Inventor： CLAUSS JOACHIM ,  SCHWIEGK STEFAN ,  KORY GAD ,  SCHMIDT CHRISTIAN ,  WILMS AXEL ,  RICHTER FLORIAN ,  ZHU NING ,  BIEDASEK SILKE ,  QUEIROZ DA FONSECA ISA ALEXANDRA ,  SACK HEINRICH ,  SCHNELLER ARNOLD ,  STAMMER ACHIM ,  RAUSCHENBERGER VOLKER

IPC: C08G69/28

Abstract: The invention relates to a method for continuously producing polyamide oligomers. The method comprises continuously conveying an aqueous solution of polyamide-forming monomers from a storage vessel into an oligomerisation reactor, heating the aqueous solution beyond a dissolution or storage temperature, wherein the dwell time of the monomer solution in the oligomerisation reactor is limited in such a way and the pressure or the partial vapour pressure of the water is set in such a way that a conversion of monomers into polyamide oligomers does not exceed a maximum value and/or the produced polyamide oligomers do not phase-separate as a solid or spontaneously crystallise, and continuously discharging the polyamide oligomers from the oligomerisation reactor. A polyamide oligomer that can be produced in accordance with said method can be continuously provided in a mixture with water and then post-condensed into a polyamide in a method for producing a semicrystalline or amorphous polyamide that can be thermoplastically processed. Said polyamide can be used to produce shaped parts by means of injection moulding, multi-component injection moulding, injection moulding welding, extrusion, coextrusion, blow moulding, or deep drawing.