公开(公告)号：US06706822B2

公开(公告)日：2004-03-16

申请号：US10170753

申请日：2002-06-13

申请人： Gerhard K. Guenther ,  Lea Ann Nairn ,  Curt D. Clark ,  Ben W. Hicks ,  Ronald A. Tharappel ,  Tim J. Coffy

发明人： Gerhard K. Guenther ,  Lea Ann Nairn ,  Curt D. Clark ,  Ben W. Hicks ,  Ronald A. Tharappel ,  Tim J. Coffy

IPC分类号： C08F800

CPC分类号： B29C47/92 ,  B29C47/0004 ,  B29C47/0023 ,  B29C47/0054 ,  B29C2947/92695 ,  C08F8/50 ,  C08F2810/10 ,  C08F110/02

摘要： A method of processing polyethylene for use as an extruded blow molding resin to improve the properties and processability thereof is accomplished by modifying a polyethylene resin having a molecular weight distribution (Mw/Mn) of less than about 10. The modification is carried out by the addition of a free radical initiator to the resin during extrusion of the resin to increase the rheological breadth of the polyethylene from about 10% to about 60% compared to unmodified polyethylene resin extruded under similar conditions. In another aspect of the invention, a polyethylene resin having higher melt index is processed to provide a desired final melt index by the addition of a free radical initiator where it would otherwise be necessary to utilize a resin having lower melt flow, and which is more difficult to process. Improvements in color can also be obtained.

摘要翻译： 通过改性分子量分布（Mw / Mn）小于约10的聚乙烯树脂，可以实现加工用于挤出吹塑树脂以提高其性能和加工性能的聚乙烯的方法。该改性通过 与在类似条件下挤出的未改性聚乙烯树脂相比，在树脂挤出期间向树脂中加入自由基引发剂以将聚乙烯的流变宽度从约10％增加至约60％。 在本发明的另一方面，通过加入自由基引发剂处理具有较高熔体指数的聚乙烯树脂以提供所需的最终熔体指数，否则将需要使用具有较低熔体流动性的树脂，并且其更多 难以处理 也可以获得颜色的改善。

公开(公告)号：US06433103B1

公开(公告)日：2002-08-13

申请号：US09775396

申请日：2001-01-31

申请人： Gerhard K. Guenther ,  Lea Ann Nairn ,  Curt D. Clark ,  Ben W. Hicks ,  Ronald A. Tharappel ,  Tim J. Coffy

发明人： Gerhard K. Guenther ,  Lea Ann Nairn ,  Curt D. Clark ,  Ben W. Hicks ,  Ronald A. Tharappel ,  Tim J. Coffy

IPC分类号： C08F800

CPC分类号： B29C47/92 ,  B29C47/0004 ,  B29C47/0023 ,  B29C47/0054 ,  B29C2947/92695 ,  C08F8/50 ,  C08F2810/10 ,  C08F110/02

摘要： A method of processing polyethylene for use as an extruded blow molding resin to improve the properties and processability thereof is accomplished by modifying a polyethylene resin having a molecular weight distribution (Mw/Mn) of less than about 10. The modification is carried out by the addition of a free radical initiator to the resin during extrusion of the resin to increase the rheological breadth of the polyethylene from about 10% to about 60% compared to unmodified polyethylene resin extruded under similar conditions. In another aspect of the invention, a polyethylene resin having higher melt index is processed to provide a desired final melt index by the addition of a free radical initiator where it would otherwise be necessary to utilize a resin having lower melt flow, and which is more difficult to process. Improvements in color can also be obtained.

摘要翻译： 通过改性分子量分布（Mw / Mn）小于约10的聚乙烯树脂，可以实现加工用于挤出吹塑树脂以提高其性能和加工性能的聚乙烯的方法。该改性通过 与在类似条件下挤出的未改性聚乙烯树脂相比，在树脂挤出期间向树脂中加入自由基引发剂以将聚乙烯的流变宽度从约10％增加至约60％。 在本发明的另一方面，通过加入自由基引发剂处理具有较高熔体指数的聚乙烯树脂以提供所需的最终熔体指数，否则将需要使用具有较低熔体流动性的树脂，并且其更多 难以处理 也可以获得颜色的改善。