公开(公告)号：US20120319318A1

公开(公告)日：2012-12-20

申请号：US13466182

申请日：2012-05-08

申请人： Yu F. Wang ,  Cynthia A. Mitchell ,  Lisa B.V. Venditte ,  George Rodriguez ,  Sudhin Datta

发明人： Yu F. Wang ,  Cynthia A. Mitchell ,  Lisa B.V. Venditte ,  George Rodriguez ,  Sudhin Datta

IPC分类号： B29C47/76

CPC分类号： C08F6/005 ,  B29B9/06 ,  B29B9/065 ,  B29C47/369 ,  C08F6/003 ,  C08F6/10 ,  C08F6/28 ,  C08J3/12 ,  C08J2323/14 ,  C08L23/00

摘要： Methods and systems for pelletizing low molecular weight semi-crystalline polymers are provided herein. Polymer compositions comprising the semi-crystalline polymer and a solvent are provided to a devolatilizing device, where the solvent is at least partially evaporated under vacuum conditions, resulting in removal of heat from the polymer by evaporative cooling and crystallization of the polymer. Once the polymer has reached the desired temperature, the polymer exits the devolatilizer and is pelletized. Semi-crystalline polymers that may be used in the present invention include propylene-based copolymers, such as propylene-ethylene and propylene-hexene copolymers having a heat of fusion, Hf, from about 5 to about 75 J/g and a weight average molecular weight, Mw, from about 10,000 to about 200,000 g/mol.

摘要翻译： 本文提供了用于造粒低分子量半结晶聚合物的方法和系统。 将包含半结晶聚合物和溶剂的聚合物组合物提供给脱挥发分装置，其中溶剂在真空条件下至少部分蒸发，导致通过蒸发冷却和聚合物结晶从聚合物中除去热量。 一旦聚合物达到所需温度，聚合物就离开脱挥发物并造粒。 可用于本发明的半结晶聚合物包括基于丙烯的共聚物，例如丙烯 - 乙烯和丙烯 - 己烯共聚物，其熔融热，Hf为约5至约75J / g，重均分子量 重量，Mw，约10,000至约200,000g / mol。

公开(公告)号：US09296837B2

公开(公告)日：2016-03-29

申请号：US13466182

申请日：2012-05-08

申请人： Yu F. Wang ,  Cynthia A. Mitchell ,  Lisa B. V. Venditte ,  George Rodriguez ,  Sudhin Datta

发明人： Yu F. Wang ,  Cynthia A. Mitchell ,  Lisa B. V. Venditte ,  George Rodriguez ,  Sudhin Datta

IPC分类号： B29C47/36 ,  C08F6/00 ,  C08F6/10 ,  C08F6/28 ,  C08J3/12 ,  B29B9/06

CPC分类号： C08F6/005 ,  B29B9/06 ,  B29B9/065 ,  B29C47/369 ,  C08F6/003 ,  C08F6/10 ,  C08F6/28 ,  C08J3/12 ,  C08J2323/14 ,  C08L23/00

摘要： Methods and systems for pelletizing low molecular weight semi-crystalline polymers are provided herein. Polymer compositions comprising the semi-crystalline polymer and a solvent are provided to a devolatilizing device, where the solvent is at least partially evaporated under vacuum conditions, resulting in removal of heat from the polymer by evaporative cooling and crystallization of the polymer. Once the polymer has reached the desired temperature, the polymer exits the devolatilizer and is pelletized. Semi-crystalline polymers that may be used in the present invention include propylene-based copolymers, such as propylene-ethylene and propylene-hexene copolymers having a heat of fusion, Hf, from about 5 to about 75 J/g and a weight average molecular weight, Mw, from about 10,000 to about 200,000 g/mol.

摘要翻译： 本文提供了用于造粒低分子量半结晶聚合物的方法和系统。 将包含半结晶聚合物和溶剂的聚合物组合物提供给脱挥发分装置，其中溶剂在真空条件下至少部分蒸发，导致通过蒸发冷却和聚合物结晶从聚合物中除去热量。 一旦聚合物达到所需温度，聚合物就离开脱挥发物并造粒。 可用于本发明的半结晶聚合物包括基于丙烯的共聚物，例如丙烯 - 乙烯和丙烯 - 己烯共聚物，其熔融热，Hf为约5至约75J / g，重均分子量 重量，Mw，约10,000至约200,000g / mol。