公开(公告)号：US20140256905A1

公开(公告)日：2014-09-11

申请号：US14199399

申请日：2014-03-06

Applicant: BASF SE

Inventor： Silke Biedasek ,  Achim Stammer

IPC: C08G69/46 ,  C08G69/14

CPC classification number: C08G69/14 ,  B01J2219/00033 ,  B01J2219/0004 ,  C08G69/16

Abstract: The present invention relates to a process for preparing polyamides by hydrolytic polymerization, in which the polyimide is treated in a devolatilizing apparatus after the hydrolytic polymerization.

Abstract translation: 本发明涉及通过水解聚合制备聚酰胺的方法，其中聚酰亚胺在水解聚合后在脱挥发分装置中进行处理。

公开(公告)号：US11897169B2

公开(公告)日：2024-02-13

申请号：US17596628

申请日：2020-06-18

Applicant: BASF SE

Inventor： Andreas Bauder ,  Kerstin Muelheims ,  Michael Freese ,  Achim Stammer

IPC: B29B9/10 ,  B29B9/12 ,  B29B9/16 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29C64/153 ,  B29C48/36 ,  C08J3/16 ,  B29K75/00

CPC classification number: B29B9/10 ,  B29B9/12 ,  B29C48/36 ,  B29C64/153 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08J3/16 ,  B29B2009/166 ,  B29K2075/00 ,  C08J2375/04

Abstract: A process for producing particles of a thermoplastic polymer in spherical form involves providing at least one thermoplastic polymer in a molten state and providing an aqueous solution of at least one surface-active substance. The aqueous solution is in a temperature range from 100 to 300° C. The process also involves dispersing the thermoplastic polymer in the aqueous solution to obtain an aqueous solution containing dispersed thermoplastic polymer, which is cooled down to a temperature below the solidification point of the thermoplastic polymer to obtain a suspension containing an aqueous solution and particles of the thermoplastic polymer suspended in a solid state and in spherical form. The particles can be separated from the suspension and, optionally, dried. The particles obtained from the process have a particle size distribution having a d[4,3] value of more than 10 μm and a d90.3 value of more than 20 μm.

公开(公告)号：US11186684B2

公开(公告)日：2021-11-30

申请号：US17258794

申请日：2019-07-10

Applicant: BASF SE

Inventor： Achim Stammer ,  Simon Gramlich ,  Andreas Bauder

IPC: C08G69/16 ,  C08G69/28 ,  C08J3/14 ,  C08G69/06 ,  B33Y70/00 ,  B33Y10/00

Abstract: The present invention relates to a process for continuously producing a polyamide powder (PP) comprising at least one semicrystalline polyamide (P). The present invention further relates to the polyamide powder (PP) thus obtainable and to the use of the polyamide powder (PP) as sinter powder (SP), and also to a process for producing a shaped body by exposing a layer of a polyamide powder (PP).

公开(公告)号：US09994678B2

公开(公告)日：2018-06-12

申请号：US14896945

申请日：2014-06-11

Applicant: BASF SE

Inventor： Christian Schmidt ,  Joachim Clauss ,  Axel Wilms ,  Volker Rauschenberger ,  Gad Kory ,  Stefan Schwiegk ,  Arnold Schneller ,  Achim Stammer ,  Frank Niedermaier ,  Bernd Hackel

IPC: C08G69/28 ,  C08G69/26

CPC classification number: C08G69/28 ,  C08G69/26 ,  C08G69/265

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：US09975994B2

公开(公告)日：2018-05-22

申请号：US15545546

申请日：2016-01-22

Applicant: BASF SE

Inventor： Simon Gramlich ,  Achim Stammer ,  Angela Ulzhöfer ,  Frank Niedermaier

IPC: C08G63/02 ,  C08G65/46 ,  C07D207/267 ,  C07C233/05

CPC classification number: C08G65/46 ,  C07C233/05 ,  C07D207/267

Abstract: A method for desalinating a salt-containing polymer (SP) comprising a polyaryl ether having a softening temperature TS and a salt (S), comprising the steps of a) providing the salt-containing polymer (SP) at a first temperature T1 above the softening temperature TS of the polyaryl ether, b) contacting the salt-containing polymer (SP) provided in step a) with an extractant (E) to obtain a desalinated polymer (DP) comprising the polyaryl ether, and a salt-containing extractant (SE) comprising the extractant (E) and the salt (S).

公开(公告)号：US20150065677A1

公开(公告)日：2015-03-05

申请号：US14016504

申请日：2013-09-03

Applicant: BASF SE

Inventor： Faissal-Ali El-Toufaili ,  Achim Stammer ,  Siimon Gramlich ,  Angela Ulzhöfer

IPC: C08G75/23

CPC classification number: C08G75/23 ,  C08G65/40

Abstract: The process for producing aromatic polyether sulfones via reaction of a dichlorodiphenyl sulfone component with a bisphenol component as monomers in the presence of alkali metal carbonate in the melt in the absence of solvents and diluents comprises carrying out the reaction in a mixing kneader which is operated with a shear rate in the range from 5 to 500 s−1.

Abstract translation: 在不存在溶剂和稀释剂的情况下，在熔融物中，在碱金属碳酸盐存在下，通过二氯二苯砜组分与双酚组分作为单体的反应制备芳族聚醚砜的方法包括在混合捏合机中进行反应，该混合捏合机与 剪切速率在5至500s -1范围内。

公开(公告)号：US20140350213A1

公开(公告)日：2014-11-27

申请号：US13934849

申请日：2013-07-03

Applicant: BASF SE

Inventor： Faissal-Ali El-Toufaili ,  Achim Stammer ,  Jens Becker ,  Karsten Daunke ,  Thomas Sauer

IPC: C08G69/16

CPC classification number: C08G69/16 ,  C08G69/46 ,  C08L77/06

Abstract: The present invention relates to a process for purifying polyamide particles wherein these are contacted with a lactam-containing treatment medium with or without a gaseous treatment medium.

Abstract translation: 本发明涉及一种纯化聚酰胺颗粒的方法，其中这些方法与含有或不含气态处理介质的含内酰胺处理介质接触。

公开(公告)号：US20140256887A1

公开(公告)日：2014-09-11

申请号：US14199436

申请日：2014-03-06

Applicant: BASF SE

Inventor： Gad Kory ,  Silke Biedasek ,  Faissal-Ali El-Toufaili ,  Achim Stammer ,  Reinhard Lang ,  Dirk Meckelnburg

IPC: C08G69/48

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

Abstract: The present invention relates to a process for preparing polyamides, comprising a hydrolytic polymerization and at least two extraction steps which are not in immediate succession.

Abstract translation: 本发明涉及一种制备聚酰胺的方法，包括水解聚合和至少两个不直接连续提取步骤。

公开(公告)号：US11097202B2

公开(公告)日：2021-08-24

申请号：US16062752

申请日：2016-12-07

Applicant: BASF SE ,  Kolon Plastics Inc.

Inventor： Achim Stammer ,  Thomas Heitz ,  Marvin Kramp ,  JongMoon Kim ,  In-Gi Cho ,  Jin-Sang Choi ,  Sang-Yup Lee

IPC: C07D323/06 ,  B01D3/00 ,  B01D3/40

Abstract: The present invention relates to a process for energy recovery in a process for the preparation of 1,3,5-trioxane.

公开(公告)号：US09534083B2

公开(公告)日：2017-01-03

申请号：US14016520

申请日：2013-09-03

Applicant: BASF SE

Inventor： Achim Stammer ,  Faissal-Ali El-Toufaili ,  Simon Gramlich ,  Angela Ulzhöfer

IPC: C08G69/28 ,  C08G69/42 ,  C08G69/30 ,  C08G69/32 ,  C08G69/06 ,  C08L77/06

CPC classification number: C08G69/42 ,  C08G69/06 ,  C08G69/28 ,  C08G69/30 ,  C08G69/32 ,  C08L77/06

Abstract: In a process for producing polyamides by polycondensation of polycondensable polyamide-forming monomers and/or oligomers in reaction mixtures comprising same, which may be water-containing but are free from organic solvents, the polycondensation is effected in an agitated reactor under agitation in a first step in the liquid phase and after a phase change taking place during the process in the same reactor is effected in a subsequent second step in the solid state, wherein the temperature in the reactor is below the melting point of the polyamide in the second step at least.

Abstract translation: 在通过可缩聚聚酰胺形成单体和/或低聚物在包含它们的反应混合物（其可以是含水但不含有机溶剂）中缩聚制备聚酰胺的方法中，在搅拌反应器中在第一 步骤在液相中，并且在相同反应器中的相变期间发生在固态的随后的第二步骤中，其中反应器中的温度低于第二步中聚酰胺的熔点 最小。