公开(公告)号：US06218504B1

公开(公告)日：2001-04-17

申请号：US09380404

申请日：1999-09-01

申请人： Volker Dolle ,  Eduardo Chicote Carrion ,  Paul-Richard Schöneborn ,  Herbert Terwyen

发明人： Volker Dolle ,  Eduardo Chicote Carrion ,  Paul-Richard Schöneborn ,  Herbert Terwyen

IPC分类号： C08F626

CPC分类号： B29B13/00 ,  B29C2071/0027 ,  B29K2023/00 ,  C08F6/005 ,  C08L23/00

摘要： A gaseous mixture of steam and air, a gaseous mixture of steam and nitrogen, or pure steam are passed around polyolefin granules in a deodorizing apparatus. The result is that the polyolefin granules have markedly improved properties with respect to odor and taste, and these are retained in moldings produced from the granules.

摘要翻译： 蒸汽和空气的气体混合物，蒸气和氮气的气体混合物或纯蒸汽在除臭装置中通过聚烯烃颗粒。 结果是聚烯烃颗粒在气味和味道方面具有显着改善的性能，并且这些颗粒保留在由颗粒制成的模制品中。

公开(公告)号：US06204345B1

公开(公告)日：2001-03-20

申请号：US09156947

申请日：1998-09-18

申请人： Joachim Berthold ,  Ludwig Böhm ,  Johannes Friederich Enderle ,  Rainer Münnig ,  Paul-Richard Schöneborn

发明人： Joachim Berthold ,  Ludwig Böhm ,  Johannes Friederich Enderle ,  Rainer Münnig ,  Paul-Richard Schöneborn

IPC分类号： C08F214

CPC分类号： C08F210/16 ,  C08F6/20 ,  C08F6/24 ,  C08F2/08 ,  C08F2/001 ,  C08F2/14 ,  C08F210/08 ,  C08F2500/07 ,  C08F2500/12

摘要： The novel process for preparing ethylene copolymers by polymerizing ethylene with, as comonomer, up to 10% by weight, based on the total amount of the monomers, of a 1-olefin of the formula R—CH═CH2, where R is a straight-chain or branched alkyl radical having from 1 to 4 carbon atoms, is carried out in a polymerization reactor and in suspension with a dispersion medium at a temperature of from 20 to 100° C. and a pressure of from 2 to 20 bar, in the presence of a catalyst. The dispersion medium is then separated from the polymer. After carrying out the polymerization, but before removing the dispersion medium from the polymer, the suspension stream is partly evaporated, with the result that some of the wax formed in the polymerization is adsorbed onto the polymer and the resultant vapor stream is fed directly into the reactors after condensation or back into the process after distillative removal of the comonomer.

摘要翻译： 通过使乙烯与共聚单体聚合高达10重量％，基于单体的总量，通式R-CH = CH 2的1-烯烃，其中R是直链的，制备乙烯共聚物的新方法 具有1至4个碳原子的链或支链烷基在聚合反应器中并在分散介质中在20至100℃的温度和2至20巴的压力下悬浮，在 催化剂的存在。 然后将分散介质与聚合物分离。 在进行聚合之后，但是在从聚合物中除去分散介质之前，将悬浮液流部分蒸发，结果聚合中形成的一些蜡被吸附到聚合物上，并将所得的蒸汽流直接进料到 冷凝后的反应器或蒸馏除去共聚单体后的反应器。