公开(公告)号：US09688805B2

公开(公告)日：2017-06-27

申请号：US13995307

申请日：2011-12-19

申请人： Ravi R. Vedula ,  James E. Bryson, Jr. ,  Mouh-Wahng Lee ,  Daniel M. Fischer ,  Christopher A. Sprague

发明人： Ravi R. Vedula ,  James E. Bryson, Jr. ,  Mouh-Wahng Lee ,  Daniel M. Fischer ,  Christopher A. Sprague

IPC分类号： C08G18/42 ,  D01D5/08 ,  C08G18/32 ,  C08G18/48 ,  C08G18/66 ,  C08G18/76 ,  C08L75/04 ,  D01F6/70 ,  D01F6/78 ,  D01F6/86

CPC分类号： C08G18/4238 ,  C08G18/3206 ,  C08G18/4854 ,  C08G18/664 ,  C08G18/7671 ,  C08L75/04 ,  D01D5/08 ,  D01F6/70 ,  D01F6/78 ,  D01F6/86 ,  Y10T428/139 ,  Y10T428/249921 ,  C08L2666/20

摘要： The present invention relates to elastomeric resins, fibers made from said resins, fabrics made with said fibers, and applications and uses for the resins, fibers and fabrics. The elastomer resins of the invention provide high strength fibers and well balanced fabrics with good physical properties and chemical resistance, making them attractive for use in various applications that use elastic fibers and fabrics.

公开(公告)号：US08148475B2

公开(公告)日：2012-04-03

申请号：US10880001

申请日：2004-06-29

申请人： Ravi R. Vedula ,  Yona Eckstein ,  Yinbing Xia ,  James E. Bryson, Jr. ,  Christopher A. Sprague ,  Julius Farkas

发明人： Ravi R. Vedula ,  Yona Eckstein ,  Yinbing Xia ,  James E. Bryson, Jr. ,  Christopher A. Sprague ,  Julius Farkas

IPC分类号： C08G18/10 ,  C08G18/48 ,  C08J3/24

CPC分类号： D01F6/70 ,  C08G18/12 ,  C08G18/3206 ,  C08G18/3215 ,  C08G18/4808 ,  C08G18/4854 ,  C08G18/6674 ,  C08G18/7657 ,  D06P3/82 ,  Y10T442/60 ,  C08G18/48 ,  C08G18/42

摘要： Thermoplastic polyether polyurethane polymers are disclosed which are mixed with a crosslinking agent to achieve long run times in a melt spinning process to make elastic fibers. The crosslinking agent is preferably a polyether or polyester polyol reacted with a diisocyanate. A melt spinning process is also disclosed using a polyether polyurethane with a crosslinking agent. Long melt spinning run times can be achieved without experiencing excessive pressure buildup in the spinneret and fiber breakage. The thermoplastic polyether polyurethane polymers are made by reacting: (1) a blend of two or more hydroxyl terminated intermediates wherein one intermediate is a polyether intermediate and has a higher number average molecular weight than the other said polyether intermediates, and wherein the weighted average number average molecular weight of said blend is greater than 1200 Daltons; (2) at least one polyisocyanate; and (3) at least one hydroxyl terminated chain extender. Melt spun fibers disclosed have excellent dye pickup, bleach resistance, and color fastness. The melt spun fibers can be dyed with polyester fibers and retain excellent physical properties.

摘要翻译： 公开了热塑性聚醚聚氨酯聚合物，其与交联剂混合以在熔融纺丝工艺中实现长时间以制备弹性纤维。 交联剂优选与二异氰酸酯反应的聚醚或聚酯多元醇。 还公开了使用具有交联剂的聚醚聚氨酯的熔融纺丝法。 可以实现长熔融纺丝运行时间，而不会在喷丝头和纤维断裂中产生过大的压力。 热塑性聚醚聚氨酯聚合物通过以下方法制备：（1）两个或多个羟基封端的中间体的共混物，其中一个中间体是聚醚中间体并且具有比其它所述聚醚中间体更高的数均分子量，并且其中加权平均数 所述共混物的平均分子量大于1200道尔顿; （2）至少一种多异氰酸酯; 和（3）至少一个羟基封端的扩链剂。 公开的熔纺纤维具有优异的染料吸收，耐漂白性和耐色牢度。 熔纺纤维可以用聚酯纤维染色并保持优异的物理性能。

公开(公告)号：US08425821B2

公开(公告)日：2013-04-23

申请号：US12884321

申请日：2010-09-17

申请人： Ravi R. Vedula ,  James E. Bryson, Jr.

发明人： Ravi R. Vedula ,  James E. Bryson, Jr.

IPC分类号： D01D5/38 ,  D01D4/06

CPC分类号： D01D1/10 ,  D01D4/00 ,  D01D4/02 ,  D01D5/08 ,  D01F6/70

摘要： A spin pack assembly for use in melt spinning elastic fibers. The spin pack assembly includes a circular breaker plate having a center aperture and several circular patterns of apertures with each circular pattern having a plurality of apertures. Each circular pattern is located concentrically about an axis of the center aperture. The apertures in the outer circular patterns have a greater diameter than the apertures in the inner circular patterns. The spin pack assembly also has a spinneret plate where the exit aperture of the spinneret plate is recessed in the body of the spin pack assembly.

摘要翻译： 用于熔纺纺丝弹性纤维的纺丝组件。 旋转组件包括具有中心孔和几个圆形图案孔的圆形破碎板，每个圆形图案具有多个孔。 每个圆形图案围绕中心孔的轴线同心地定位。 外圆形图案中的孔具有比内圆形图案中的孔更大的直径。 旋转组件还具有喷丝板，其中喷丝板的出口孔凹入纺丝组件的主体中。