公开(公告)号：CA2914510A1

公开(公告)日：2014-12-18

申请号：CA2914510

申请日：2014-06-11

Applicant: BASF SE

Inventor： SCHMIDT CHRISTIAN ,  CLAUSS JOACHIM ,  WILMS AXEL ,  RAUSCHENBERGER VOLKER ,  KORY GAD ,  SCHWIEGK STEFAN ,  SCHNELLER ARNOLD ,  STAMMER ACHIM ,  NIEDERMAIER FRANK ,  HACKEL BERND

IPC: C08G69/28

Abstract: The present invention relates to a process for the preparation of an aliphatic or partially aromatic polyamide, in which an aqueous composition of the monomers is subjected to an oligomerization at elevated temperature and increased pressure, the reaction mixture is optionally subjected to a first decompression to reduce the water content, the (optionally decompressed) reaction mixture is heated within a short time to a temperature above the melting temperature of the polyamides and the heated reaction mixture is subjected to a (further) decompression to reduce the water content and to an after-polymerization.

公开(公告)号：CA2914510C

公开(公告)日：2021-06-08

申请号：CA2914510

申请日：2014-06-11

Applicant: BASF SE

Inventor： SCHMIDT CHRISTIAN ,  CLAUSS JOACHIM ,  WILMS AXEL ,  RAUSCHENBERGER VOLKER ,  KORY GAD ,  SCHWIEGK STEFAN ,  SCHNELLER ARNOLD ,  STAMMER ACHIM ,  NIEDERMAIER FRANK ,  HACKEL BERND

IPC: C08G69/28

Abstract: ABSTRACT The present invention relates to a process for the preparation of an aliphatic or partially aromatic polyamide, in which an aqueous composition of the monomers is subjected to an oligomerization at elevated temperature and increased pressure, the reaction mixture is optionally subjected to a first decompression to reduce the water content, the (optionally decompressed) reaction mixture is heated within a short time to a temperature above the melting temperature of the polyamides and the heated reaction mixture is subjected to a (further) decompression to reduce the water content and to an after-polymerization. Fig 2 Ph . Q.16 ¨ 11 omerizat g Fiolansh zone El ) n Mixture Oli 0. Heat exchanger 1 ti ,r Flash zone E2) t ., . ,o.t., ,.' Polymer Date Recue/Date Received 2020-10-06

公开(公告)号：SG11201510168XA

公开(公告)日：2016-01-28

申请号：SG11201510168X

申请日：2014-06-11

Applicant: BASF SE

Inventor： SCHMIDT CHRISTIAN ,  CLAUSS JOACHIM ,  WILMS AXEL ,  RAUSCHENBERGER VOLKER ,  KORY GAD ,  SCHWIEGK STEFAN ,  SCHNELLER ARNOLD ,  STAMMER ACHIM ,  NIEDERMAIER FRANK ,  HACKEL BERND

IPC: C08G69/28

Abstract: The present invention relates to a process for the preparation of an aliphatic or partially aromatic polyamide, in which an aqueous composition of the monomers is subjected to an oligomerization at elevated temperature and increased pressure, the reaction mixture is optionally subjected to a first decompression to reduce the water content, the (optionally decompressed) reaction mixture is heated within a short time to a temperature above the melting temperature of the polyamides and the heated reaction mixture is subjected to a (further) decompression to reduce the water content and to an after-polymerization.