专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6146758A Polypropylene fibers 有权
标题翻译：聚丙烯纤维
公开(公告)号：US6146758A
公开(公告)日：2000-11-14
申请号：US303728
申请日：1999-05-03
申请人： Mohan R. Gownder , Eduardo E. Zamora , Jay Nguyen
发明人： Mohan R. Gownder , Eduardo E. Zamora , Jay Nguyen
IPC分类号： C08F4/642 , C08F4/6592 , C08F110/00 , C08F110/06 , D01F6/06
CPC分类号： D01F6/06 , Y10T428/2913 , Y10T428/2967
摘要： Process for the production of polypropylene fibers from polypropylene polymers produced by the polymerization of polypropylene in the presence of a metallocene catalyst characterized by a bridged racemic bis(indenyl) ligand substituted at the proximal position. The polypropylene contains 0.5 to 2% 2,1 insertions and has an isotacticity of at least 95% meso diads and is heated to a molten state and extruded to form a fiber preform. The preform is subjected to spinning at a spinning speed of at least 500 meters per minutes and subsequent drawing at a speed of at least 1,500 meters per minute to provide a draw ratio of at least 3 to produce a continuous polypropylene fiber. The draw speed and/or the draw ratio can be varied to produce fibers of different mechanical properties. Different polypropylene polymers produced by different metallocene catalysts can be used. Such fibers can be characterized by having an elongation at break of at least 100% and a specific toughness of at least 0.5 grams per denier.
摘要翻译：通过在茂金属催化剂存在下聚丙烯聚合生产聚丙烯聚丙烯的方法，其特征在于在近端位置被取代的桥连外消旋双（茚基）配体。聚丙烯含有0.5至2％的2,1插入并且具有至少95％的内消旋二聚体的全同立构规整度，并被加热至熔融状态并挤出以形成纤维预制件。以每分钟至少500米的纺丝速度进行纺丝，然后以至少1500米/分钟的速度拉伸，以提供至少3的拉伸比，以生产连续的聚丙烯纤维。拉伸速度和/或拉伸比可以变化以产生不同机械性能的纤维。可以使用由不同茂金属催化剂制备的不同的聚丙烯聚合物。这种纤维的特征在于具有至少100％的断裂伸长率和至少0.5克/旦尼尔的比韧度。

2. 发明授权

US5908594A Process of making polypropylene fiber 失效
标题翻译：制造聚丙烯纤维的工艺
公开(公告)号：US5908594A
公开(公告)日：1999-06-01
申请号：US936254
申请日：1997-09-24
申请人： Mohan R. Gownder , Eduardo E. Zamora , Jay Nguyen
发明人： Mohan R. Gownder , Eduardo E. Zamora , Jay Nguyen
IPC分类号： C08F4/642 , C08F4/6592 , C08F110/00 , C08F110/06 , D01F6/06 , D01D5/16
CPC分类号： D01F6/06 , Y10T428/2913 , Y10T428/2967
摘要： Process for the production of polypropylene fibers from polypropylene polymers produced by the polymerization of polypropylene in the presence of a metallocene catalyst characterized by a bridged racemic bis(indenyl) ligand substituted at the proximal position. The polypropylene contains 0.5 to 2% 2,1 insertions and has an isotacticity of at least 95% meso diads and is heated to a molten state and extruded to form a fiber preform. The preform is subjected to spinning at a spinning speed of at least 500 meters per minutes and subsequent drawing at a speed of at least 1,500 meters per minute to provide a draw ratio of at least 3 to produce a continuous polypropylene fiber. The draw speed and/or the draw ratio can be varied to produce fibers of different mechanical properties. Different polypropylene polymers produced by different metallocene catalysts can be used. Such fibers can be characterized by having an elongation at break of at least 100% and a specific toughness of at least 0.5 grams per denier.
摘要翻译：通过在茂金属催化剂存在下聚丙烯聚合生产聚丙烯聚丙烯的方法，其特征在于在近端位置被取代的桥连外消旋双（茚基）配体。聚丙烯含有0.5至2％的2,1插入并且具有至少95％的内消旋二聚体的全同立构规整度，并被加热至熔融状态并挤出以形成纤维预制件。以每分钟至少500米的纺丝速度进行纺丝，然后以至少1500米/分钟的速度拉伸，以提供至少3的拉伸比，以生产连续的聚丙烯纤维。拉伸速度和/或拉伸比可以变化以产生不同机械性能的纤维。可以使用由不同茂金属催化剂制备的不同的聚丙烯聚合物。这种纤维的特征在于具有至少100％的断裂伸长率和至少0.5克/旦尼尔的比韧度。

3. 发明授权

US07087301B2 Bicomponent fibers of syndiotactic polypropylene 有权
标题翻译：间同立构聚丙烯的双组分纤维
公开(公告)号：US07087301B2
公开(公告)日：2006-08-08
申请号：US11014672
申请日：2004-12-16
申请人： Michael Musgrave , Mohan R. Gownder , Jay Nguyen
发明人： Michael Musgrave , Mohan R. Gownder , Jay Nguyen
IPC分类号： D01F8/00
CPC分类号： D04H1/541 , D01F8/06 , Y10T428/2924 , Y10T428/2929 , Y10T428/2931 , Y10T428/2933 , Y10T442/637 , Y10T442/638 , Y10T442/69 , Y10T442/697
摘要： Bicomponent fibers of syndiotactic polypropylene and ethylene-propylene random copolymer, can be prepared. The bicomponent fibers may exhibit self-crimp properties and high shrinkage characteristics.
摘要翻译：可以制备间同立构聚丙烯和乙烯 - 丙烯无规共聚物的双组分纤维。双组分纤维可表现出自卷曲性和高收缩特性。

4. 发明授权

US06846561B1 Bicomponent fibers of isotactic and syndiotactic polypropylene 失效
标题翻译：全同立构和间同立构聚丙烯的双组分纤维
公开(公告)号：US06846561B1
公开(公告)日：2005-01-25
申请号：US10635788
申请日：2003-08-06
申请人： Mohan R. Gownder , Michael Musgrave , Jay Nguyen
发明人： Mohan R. Gownder , Michael Musgrave , Jay Nguyen
IPC分类号： D01F8/06 , D01F8/00
CPC分类号： D01F8/06 , Y10T428/2913 , Y10T428/2924 , Y10T428/2929 , Y10T428/2931
摘要： Bicomponent fibers of isotactic polypropylene and syndiotactic polypropylene, methods of making such fibers and products made thereof are disclosed. Embodiments of the bicomponent fibers can exhibit self-crimp properties and high shrinkage characteristics.
摘要翻译：公开了全同立构聚丙烯和间同立构聚丙烯的双组分纤维，制备这种纤维的方法及其制备的产品。双组分纤维的实施方案可呈现自卷曲性和高收缩特性。

5. 发明授权

US06395392B1 Bicomponent fibers of isotactic and syndiotactic polypropylene, methods of making, products made thereof 有权
标题翻译：全同立构和间同立构聚丙烯的双组分纤维，制备方法，制成的产品
公开(公告)号：US06395392B1
公开(公告)日：2002-05-28
申请号：US09575872
申请日：2000-05-22
申请人： Mohan R. Gownder
发明人： Mohan R. Gownder
IPC分类号： D01F800
CPC分类号： D01D5/253 , D01F8/06 , Y10T428/2924 , Y10T428/2929 , Y10T428/2931
摘要： Bicomponent fibers of isotactic polypropylene and syndiotactic polypropylene, methods of making such fibers and products made thereof.
摘要翻译：全同立构聚丙烯和间同立构聚丙烯的双组分纤维，制备这种纤维的方法和由其制成的产品。

6. 发明授权

US6074590A Process of making a bicomponent fiber 失效
标题翻译：制造双组分纤维的方法
公开(公告)号：US6074590A
公开(公告)日：2000-06-13
申请号：US901358
申请日：1997-07-28
申请人： Mohan R. Gownder
发明人： Mohan R. Gownder
IPC分类号： D01D5/253 , D01F8/06 , D01D5/32 , D01D5/34
CPC分类号： D01D5/253 , D01F8/06 , Y10T428/2924 , Y10T428/2929 , Y10T428/2931
摘要： Bicomponent fibers of isotactic polypropylene and syndiotactic polypropylene, methods of making such fibers and products made thereof.
摘要翻译：全同立构聚丙烯和间同立构聚丙烯的双组分纤维，制备这种纤维的方法和由其制成的产品。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式