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公开(公告)号：US11850770B2
公开(公告)日：2023-12-26
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.
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公开(公告)号：US10370479B2
公开(公告)日：2019-08-06
申请号：US15306338
申请日：2015-04-20
Applicant: BASF SE
Inventor： Christian Koenig , Dejan Petrovic , Achim Loeffler , Andreas Bauder , Daniel Freidank , Dirk Opfermann , Isa Alexandra Queiroz Da Fonseca , Caroline Mages-Sauter , Chuan Long Fu , Shu Kui Wang
IPC: C08G18/08 , C08G18/63 , C08L71/02 , C08L75/04 , C08F257/00 , C08G18/72 , C08J3/00 , C08J3/09 , C08J9/00
Abstract: This invention relates to a continuous process for making a polymer polyol, the polymer polyol produced according to the said process and its applications.
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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.
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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
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).
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