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).

公开(公告)号：US20170081472A1

公开(公告)日：2017-03-23

申请号：US15311414

申请日：2015-05-13

Applicant: BASF SE

Inventor： Ning ZHU ,  Ruediger HAEFFNER ,  Achim STAMMER ,  Cesar ORTIZ ,  Silke BIEDASEK ,  Faissal-Ali EL-TOUFAILI

IPC: C08G69/16 ,  C08G69/46 ,  C08G69/14

CPC classification number: C08G69/16 ,  C08G69/06 ,  C08G69/14 ,  C08G69/46

Abstract: The present invention provides a process for producing polyamides, which comprises a) providing a monomer composition comprising at least one lactam or at least one aminocarbonitrile and/or oligomers of these monomers, b) reacting the monomer composition provided in step a) in a hydrolytic polymerization at elevated temperature in the presence of water to obtain a reaction product comprising polyamide, water, unconverted monomers and oligomers, c) the reaction product obtained in step b) being fed into at least one kneader (3) and subjected to a postpolymerization, d) optionally forming the reaction product obtained in step c) to obtain polyamide particles, e) optionally treating the reaction product obtained in step c) or the polyamide particles obtained in step d) with at least one extractant.

公开(公告)号：US20200047397A1

公开(公告)日：2020-02-13

申请号：US16342736

申请日：2017-10-24

Applicant: BASF SE

Inventor： Rolf MINKWITZ ,  Silke BIEDASEK ,  Rony KNIERIM ,  Frank HERBOTH

IPC: B29C55/28 ,  B29C55/12 ,  B29C48/88

Abstract: The present invention relates to a process for producing a polymer film (P) comprising a polyamide composition (PC) by extruding the polyamide composition (PC) through an annular die and then stretching the tube thus obtained by blowing in air. The present invention further relates to the polymer film (P) obtainable by the process of the invention and to a process for packaging foodstuffs with the polymer film (P).

公开(公告)号：US20160009869A1

公开(公告)日：2016-01-14

申请号：US14771578

申请日：2014-03-06

Applicant: BASF SE

Inventor： Silke BIEDASEK ,  Achim STAMMER ,  Gad KORY ,  William E. GRANT

IPC: C08J3/00 ,  D01F6/60 ,  C08G69/16 ,  C08J5/18

CPC classification number: C08J3/00 ,  C08G69/06 ,  C08G69/16 ,  C08J5/18 ,  C08J2377/02 ,  D01F6/60

Abstract: The present invention relates to a process for preparing polyamides, comprising a hydrolytic polymerization, a postpolymerization and an extraction.

Abstract translation: 本发明涉及一种制备聚酰胺的方法，包括水解聚合，后聚合和萃取。