公开(公告)号：US20160325265A1

公开(公告)日：2016-11-10

申请号：US15104728

申请日：2014-12-17

Applicant: BASF SE

Inventor： NING ZHU ,  Rainer OSTERMANN ,  Heinrich SACK ,  Alexander GOETZ ,  Achim STAMMER ,  Dirk SIMON

IPC: B01J19/26 ,  B05B7/08 ,  C08G69/14 ,  B01J4/00 ,  C08G69/18 ,  C08G69/04

Abstract: The invention relates to a method for producing polyamides by means of a spray nozzle arrangement for the collision of spray jets, comprising at least one spray nozzle forming a first spray jet having a first spray jet cross-sectional surface and a first spray jet longitudinal extension axis, and comprising a second spray jet forming a second spray jet having a second spray jet cross-sectional surface and a second spray jet longitudinal extension axis, wherein the first and second spray jets have a spray direction that is facing the gravitational field, and are arranged opposite one another such that in a spray direction facing the gravitational field, the formed spray jets collide in a collision area. The invention is characterized in that the angle between the first and the second spray jet is in the range of 5° to 170°, and that the first and second spray nozzles are arranged such that upon colliding, the first spray jet cross-sectional surface of the first spray jet forms an intersection with the second spray jet cross-sectional surface of the second spray jet.

Abstract translation: 本发明涉及一种通过用于喷射射流碰撞的喷嘴装置来生产聚酰胺的方法，该方法包括形成具有第一喷射横截面和第一喷射射流纵向延伸部分的第一喷射射流的至少一个喷嘴 并且包括形成具有第二喷射横截面和第二喷射射流纵向延伸轴线的第二喷射射流的第二喷射射流，其中所述第一和第二喷射喷嘴具有面向重力场的喷射方向，以及 彼此相对布置，使得在面向重力场的喷射方向上，所形成的喷射射流在碰撞区域中碰撞。 本发明的特征在于，第一和第二喷射射流之间的角度在5°至170°的范围内，并且第一和第二喷嘴布置成使得在碰撞时，第一喷射截面 的第一喷射喷嘴形成与第二喷射射流的第二喷射横截面的交点。

公开(公告)号：US20210206919A1

公开(公告)日：2021-07-08

申请号：US15999520

申请日：2017-02-16

Applicant: BASF SE

Inventor： Angela ULZHÖFER ,  Simon GRAMLICH ,  Rainer OSTERMANN ,  Achim STAMMER ,  Dirk SIMON ,  Ning ZHU

IPC: C08G69/04 ,  C08G69/16 ,  C08G69/46 ,  C08J3/07 ,  C08J3/14 ,  C08L77/02

Abstract: Process for producing polyamide powders by precipitation The present invention relates to a process for producing polyamide powders and to the polyamide powders obtainable by this process. The present invention additionally relates to the use of the polyamide powder as sintering powder in selective laser sintering.