公开(公告)号：US06548619B2

公开(公告)日：2003-04-15

申请号：US09928264

申请日：2001-08-10

申请人： Alexander Pross ,  Heinz-Werner Lucas ,  Horst Stepanski ,  Eckhardt Weidner ,  Marcus Petermann ,  Andreas Kilzer

发明人： Alexander Pross ,  Heinz-Werner Lucas ,  Horst Stepanski ,  Eckhardt Weidner ,  Marcus Petermann ,  Andreas Kilzer

IPC分类号： C08G1842

CPC分类号： C08J3/12 ,  B01J2/02 ,  B01J2/04 ,  C08G18/0852 ,  C08G18/66 ,  C08G2170/20 ,  C08G2250/00 ,  C08J2375/04

摘要： The present invention relates to a process for the production of particles from solutions or melts of heat-activatable polyurethanes by i) dissolving a compressible auxiliary agent at a pressure of between 50 and 1000 bar into a conveyable solution or melt of a heat-activatable polyurethane to obtain a mixture of polyurethane, compressible auxiliary agent and optionally solvent, ii) optionally adjusting of the temperature of the resulting mixture to a temperature of from 40° K below to 150° K above the crystallite melting point of the polyurethane, iii) expanding the mixture by means of an expansion device into a container, while adjusting the temperature in the container to at least 5° K below the softening temperature of the polyurethane to maintain the open jet particles in a form in which they do not agglomerate, and iv) separating the formed particles from the stream of decompressed compressible auxiliary agent and optionally solvent.

摘要翻译： 本发明涉及一种从可热活化的聚氨酯的溶液或熔体中生产颗粒的方法，其特征在于将可压缩助剂在50至1000巴之间的压力下溶解在可传热的溶液或可热活化的聚氨酯的熔体中 获得聚氨酯，可压缩辅助剂和任选溶剂的混合物，ii）任选地将所得混合物的温度调节至高于聚氨酯的微晶熔点至低于150°K的温度，iii）将 混合物通过膨胀装置进入容器，同时将容器中的温度调节至低于聚氨酯的软化温度至少5°K，以将开放的喷射颗粒保持为不凝聚的形式，并且分离 来自减压的可压缩辅助剂流的成形颗粒和任选的溶剂。

公开(公告)号：US06828363B2

公开(公告)日：2004-12-07

申请号：US09935619

申请日：2001-08-23

申请人： Sabine Beuermann ,  Michael Buback ,  Michael Juergens ,  Eckhard Weidner ,  Marcus Petermann ,  Christian Schwede ,  Peter Klostermann

发明人： Sabine Beuermann ,  Michael Buback ,  Michael Juergens ,  Eckhard Weidner ,  Marcus Petermann ,  Christian Schwede ,  Peter Klostermann

IPC分类号： C08K300

CPC分类号： C08F6/00 ,  C08F2/04 ,  C08F2220/281 ,  C08F2220/325 ,  C09D5/03 ,  Y02P20/544 ,  C08F220/14 ,  C08F212/08 ,  C08F2220/1866

摘要： The invention relates to a method of preparation for polymers, particularly binders for powder coatings and powder coatings which are prepared as a solution in a supercritical fluid phase. Binders for powder coatings are prepared from at least two ethylenically unsaturated monomers capable of free-radical or ionic copolymerization, and conventional initiators and regulators in supercritical fluids, whereby polymerization is carried out in the homogeneous phase, and, after the reaction has ended, either the composition or the phase parameters of the mixture are altered so that at least two phases with supercritical fluid are obtained, and the phase containing predominantly polymer is separated and the polymer is separated as a powder from the sc fluid by depressurization or the polymer phase is further processed under supercritical phase conditions to the powder coating.

摘要翻译： 本发明涉及一种制备聚合物的方法，特别是制备为超临界流体相中溶液的粉末涂料和粉末涂料的粘合剂。 用于粉末涂料的粘合剂由至少两种能够进行自由基或离子共聚的烯键式不饱和单体和超临界流体中的常规引发剂和调节剂制备，其中聚合在均相中进行，反应结束后， 改变混合物的组成或相参数，使得获得具有超临界流体的至少两相，并且主要包含聚合物的相分离，并且通过减压将聚合物作为粉末与sc流体分离，或者聚合物相是 在超临界相条件下进一步加工成粉末涂料。