公开(公告)号：US3458467A

公开(公告)日：1969-07-29

申请号：US3458467D

申请日：1965-12-27

Applicant: BASF AG

Inventor： HERRLE KARL ,  BAUMANN KARL HEINZ ,  BECKMANN WILHELM ,  HEIL EDUARD

IPC: B01J10/00 ,  B01J19/24 ,  C08F2/00 ,  C08F2/22 ,  C08F1/06 ,  C08F1/13

CPC classification number: C08F2/22 ,  B01J19/2435 ,  B01J2219/00094

公开(公告)号：US3676378A

公开(公告)日：1972-07-11

申请号：US3676378D

申请日：1970-03-25

Applicant: BASF AG

Inventor： HEIL EDUARD ,  TRIESCHMANN HANS-GEORG ,  WILLERSINN HERBERT ,  BOLTE HERBERT ,  BRONSTERT KLAUS

IPC: B29C44/34 ,  C08J9/16 ,  C08F47/10 ,  C08F33/02

CPC classification number: B29C44/461 ,  B29C44/3442 ,  C08J9/16

Abstract: Continuous production of styrene polymers which contain an expanding agent and which are in the form of granules by extrusion of a mixture of a melt of the polymer with the expanding agent and rapid cooling of the extruded mixture, wherein excess expanding agent is first mixed with the melt and then the excess of expanding agent is evaporated. In this way both the production of a homogeneous mixture and the cooling of the mixture prior to extrusion to temperatures just above the softening point of the mixture are facilitated.

Abstract translation: 连续生产含有发泡剂的苯乙烯聚合物，并且通过将聚合物的熔体与发泡剂的混合物挤出并挤出混合物的快速冷却而形成颗粒形式，其中过量的膨胀剂首先与 熔化，然后蒸发过量的发泡剂。 以这种方式，促进均匀混合物的生产和在挤出之前将混合物冷却至刚好高于混合物的软化点的温度。

公开(公告)号：US3891603A

公开(公告)日：1975-06-24

申请号：US42909073

申请日：1973-12-28

Applicant: BASF AG

Inventor： HEIL EDUARD ,  KUCHNER KARL ,  SLIWKA WOLFGANG ,  SMITS HARALD

IPC: B01J19/00 ,  C08F10/00 ,  C08F1/11 ,  C08F1/98

CPC classification number: B01J19/0013 ,  B01J2219/00103 ,  B01J2219/00108 ,  C08F10/00 ,  C08F4/28

Abstract: Copolymers of ethylene with 10 to 98 percent by weight of conventional comonomers are made by copolymerization in aqueous dispersion, at least a part of the heat of polymerization being removed by evaporation of the ethylene. The vapors are cooled by a cooling medium by heat exchange, in a cooling zone situated above the polymerization vessel and communicating with the latter, the hot vapors being fed to the upper end of the cooling zone, the cooled vapors returning to the polymerization vessel, so that the vapors are cooled by the cooling medium while they are flowing downward.

Abstract translation: 通过在水分散体中共聚制备乙烯与10至98重量％的常规共聚单体的共聚物，通过乙烯蒸发除去至少一部分聚合热。 蒸汽通过热交换由冷却介质冷却，在位于聚合容器上方的冷却区中并与其连通，热蒸汽被供给到冷却区的上端，冷却的蒸气返回聚合容器， 使得蒸汽在冷却介质向下流动时被冷却。

公开(公告)号：US3634300A

公开(公告)日：1972-01-11

申请号：US3634300D

申请日：1970-11-04

Applicant: BASF AG

Inventor： FISCHER HERMANN ,  HEIL EDUARD ,  SWOBODA JOHANN ,  THOMA RICHARD

IPC: C08F6/10 ,  C08F47/22

CPC classification number: C08F6/10

Abstract: A CONTINOUS PROCESS FOR THE REMOVAL OF RESIDUAL MONOMERS FROM SOLUTION OF ACRYLONITRILE POLYMERS IN DIMETHYLFORMAMIDE AND FOR CONCENTRATING THE SOLUTIONS IN A SEQUENCE OF SEPARATING ZONES PRESSURE RELEASE ZONES, HEATING ZONES AND PRESSURE RELEASE ZONES. THE PROCESS IS DISTINGUISHED BY SHORT RESIDENCE TIMES AND ONLY SLIGHT DAMAGE TO THE POLYMER SOLUTIONS. THE SOLUTIONS OBTAINED MAY SERVE FOR THE PRODUCTION OF FILAMENTS, THREADS OR FIBERS.