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公开(公告)号:US06992146B2
公开(公告)日:2006-01-31
申请号:US10998411
申请日:2004-11-29
申请人: Kimberly Miller McLoughlin , Edwin B. Townsend, IV , John A. Boettger , Gary R. Tarr , Theodore Gabor
发明人: Kimberly Miller McLoughlin , Edwin B. Townsend, IV , John A. Boettger , Gary R. Tarr , Theodore Gabor
IPC分类号: C08F8/06
CPC分类号: C08F8/50 , C08K5/0033 , C08K5/14 , C08L23/10 , C08L53/00
摘要: A process is provided for the production of a very low melt viscosity (high melt flow index) polymer resin, suitable for use in spunbond or meltblown processing. According to the process of the current invention, a high melt viscosity (low melt flow index) resin is subjected to post-reactor molecular weight alteration by extrusion with a chemical prodegradant. The process produces a very low melt viscosity resin that can be used in spunbond or meltblown processing without further treatment to reduce the average molecular weight of the resin. Further, the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant.
摘要翻译: 提供了一种生产适用于纺粘或熔喷处理的非常低熔体粘度(高熔体流动指数)聚合物树脂的方法。 根据本发明的方法,通过用化学降解剂进行挤出,使高熔体粘度(低熔体流动指数)树脂进行后反应器分子量改变。 该方法产生非常低的熔体粘度树脂,其可以用于纺粘或熔喷处理,而不需要进一步处理以降低树脂的平均分子量。 此外,根据本发明的方法生产的非常低的熔体粘度树脂含有很少或没有残留的降解剂。
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公开(公告)号:US20050075446A1
公开(公告)日:2005-04-07
申请号:US10998411
申请日:2004-11-29
CPC分类号: C08F8/50 , C08K5/0033 , C08K5/14 , C08L23/10 , C08L53/00
摘要: A process is provided for the production of a very low melt viscosity (high melt flow index) polymer resin, suitable for use in spunbond or meltblown processing. According to the process of the current invention, a high melt viscosity (low melt flow index) resin is subjected to post-reactor molecular weight alteration by extrusion with a chemical prodegradant. The process produces a very low melt viscosity resin that can be used in spunbond or meltblown processing without further treatment to reduce the average molecular weight of the resin. Further, the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant.
摘要翻译: 提供了一种生产适用于纺粘或熔喷处理的非常低熔体粘度(高熔体流动指数)聚合物树脂的方法。 根据本发明的方法,通过用化学降解剂进行挤出,使高熔体粘度(低熔体流动指数)树脂进行后反应器分子量改变。 该方法产生非常低的熔体粘度树脂,其可以用于纺粘或熔喷处理,而不需要进一步处理以降低树脂的平均分子量。 此外,根据本发明的方法生产的非常低的熔体粘度树脂含有很少或没有残留的降解剂。
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公开(公告)号:US06855777B2
公开(公告)日:2005-02-15
申请号:US10224715
申请日:2002-08-22
申请人: Kimberly M. McLoughlin , Edwin B. Townsend, IV , John A. Boettger , Gary R. Tarr , Theodore Gabor
发明人: Kimberly M. McLoughlin , Edwin B. Townsend, IV , John A. Boettger , Gary R. Tarr , Theodore Gabor
CPC分类号: C08K5/0033 , C08F8/50 , C08F2810/10 , C08L23/10 , C08L53/00 , C08F110/06
摘要: A process is provided for the production of a very low melt viscosity (high melt flow index) polymer resin, suitable for use in meltblown processing. According to the process of the current invention, a high melt viscosity (low melt flow index) resin is subjected to post-reactor molecular weight alteration by extrusion with a chemical prodegradant. The process produces a very low melt viscosity resin that can be used in meltblown processing without further treatment to reduce the average molecular weight of the resin. Further, the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant.
摘要翻译: 提供了一种生产适用于熔喷处理的非常低的熔体粘度(高熔体流动指数)聚合物树脂的方法。 根据本发明的方法,通过用化学降解剂进行挤出,使高熔体粘度(低熔体流动指数)树脂进行后反应器分子量改变。 该方法产生非常低的熔融粘度树脂,其可以用于熔喷处理而不进行进一步处理以降低树脂的平均分子量。 此外,根据本发明的方法生产的非常低的熔体粘度树脂含有很少或没有残留的降解剂。
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