公开(公告)号：US5780520A

公开(公告)日：1998-07-14

申请号：US772236

申请日：1996-12-23

申请人： Billy J. Reeves ,  Michael P. Ekart ,  William H. Heise ,  Johnny W. Shadden ,  Candace M. Stipe

发明人： Billy J. Reeves ,  Michael P. Ekart ,  William H. Heise ,  Johnny W. Shadden ,  Candace M. Stipe

IPC分类号： B01D11/04 ,  B01D11/02 ,  C08J11/08 ,  C08J11/04

CPC分类号： C08J11/08 ,  B01D11/0288 ,  C08J2367/02 ,  Y02W30/701

摘要： A novel technique to treat post-consumer polyester for reuse in food-contact applications is described. The process comprises contacting contaminated post consumer polyester flake with at least one extraction solvent which is soluble in said contaminated flake at a temperature sufficient to allow rapid diffusion of contaminants from said polyester flake; and removing said extraction solvent containing said contaminants from said polyester flake.

摘要翻译： 描述了一种将消费后聚酯用于食品接触应用中的再利用的新技术。 该方法包括使受污染的消费后的聚酯薄片与至少一种可溶于所述污染的薄片的提取溶剂接触，所述提取溶剂的温度足以允许来自所述聚酯薄片的污染物的快速扩散; 并从所述聚酯薄片中除去含有所述污染物的所述提取溶剂。

公开(公告)号：US5348699A

公开(公告)日：1994-09-20

申请号：US205014

申请日：1994-03-02

申请人： August K. Meyer ,  Johnny W. Shadden ,  Candace M. Stipe ,  Leron R. Dean

发明人： August K. Meyer ,  Johnny W. Shadden ,  Candace M. Stipe ,  Leron R. Dean

IPC分类号： C08L67/02 ,  D01F6/92 ,  B29C47/00

CPC分类号： D01F6/92 ,  C08L67/02

摘要： This invention relates to a process for preparing copolyester fibers having reduced spinning defects. More particularly, the invention relates to fibers having improved quality prepared from blends of certain poly(ethylene terephthalate) compositions modified with 1,4-cyclohexanedimethanol by melt spinning to produce filaments with decreased spinning defects while maintaining the chemical resistance, abrasion resistance, electrical and mechanical properties normally associated with copolyesters. These polymer blends when heated provide a fiber-forming polymer melt/dope which has excellent flowability and produces high quality fiber when subjected to conventional melt spinning, drawing, texturing, etc. Staple fibers prepared from the polymer blends of the invention when made into high loft battings have excellent fiberfill performance properties, particularly resilience and compression recovery.

摘要翻译： 本发明涉及一种制备具有减少的纺丝缺陷的共聚酯纤维的方法。 更具体地说，本发明涉及具有改进质量的纤维，其由通过熔融纺丝改性的某些聚对苯二甲酸乙二醇酯组合物的共混物制备，以生产具有降低的纺丝缺陷的长丝，同时保持耐化学性，耐磨性，电和 通常与共聚酯相关的机械性能。 当加热时，这些聚合物共混物提供了成形聚合物熔体/涂料，其具有优异的流动性，并且当经受常规的熔融纺丝，拉伸，变形等时，可以生产高质量的纤维。当制成本发明的聚合物共混物时制成的短纤维 优良的纤维填充性能，特别是弹性和压缩恢复。