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公开(公告)号：US5399304A
公开(公告)日：1995-03-21
申请号：US900807
申请日：1992-06-17
IPC分类号： B29C41/50 , C08J9/28 , B29C41/24 , B29K105/04 , C08J9/14
CPC分类号： C08J9/28 , B29C41/50 , Y10T428/249979
摘要： The present invention is directed to improving thermoplastic and cross-linked polymeric networks. The inventive method comprises forming the polymeric network under gravitational conditions comprising from about 10.sup.-6 to about 10.sup.-2 g. Three modes of energy transfer have been recognized, inter alia, conduction, convection, and radiation. Polymeric networks formed under microgravity conditions (defined herein as gravitational conditions comprising from about 10.sup.-6 to about 10.sup.-2 g) do not obviate conduction and radiation modes of energy transfer. Convection energy transfer, however, is gravity dependent. Thus, convection currents can be suppressed in thermoplastic and cross-linked polymeric networks during network formation by forming the network under microgravity conditions. Suppression of convection currents reduces the incidences of voids in solvent cast thermoplastic polymeric membranes, which forms yet another aspect of the present invention. Particulate-filled thermoplastic and cross-linked polymeric networks will exhibit a more homogeneous distribution of particulates in the network by forming the network under microgravity conditions also, which forms yet a further aspect of the present invention.
摘要翻译： 本发明涉及改进热塑性和交联聚合物网络。 本发明的方法包括在包含约10-6至约10-2g的重力条件下形成聚合物网络。 已经认识到三种能量转移模式，特别是传导，对流和辐射。 在微重力条件（本文定义为包含约10-6至约10-2g的重力条件）下形成的聚合物网络不消除能量传递的传导和辐射模式。 然而，对流能量转移是重力依赖的。 因此，通过在微重力条件下形成网络，可以在网络形成期间在热塑性和交联聚合物网络中抑制对流。 对流的抑制降低了溶剂浇铸热塑性聚合物膜中空隙的发生率，这形成了本发明的另一方面。 颗粒填充的热塑性和交联聚合物网络将通过在微重力条件下形成网络而在网络中表现出更均匀的颗粒分布，这也形成了本发明的另一方面。
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公开(公告)号：US4346052A
公开(公告)日：1982-08-24
申请号：US174200
申请日：1980-07-31
申请人： Jack R. Knox
发明人： Jack R. Knox
CPC分类号： D01D5/22 , B29C47/0014 , B29C47/825 , D01D5/088 , B29C47/0035
摘要： Process and composition relating to novel, fine denier, homogeneous, curly synthetic fibers are set out. The process comprises orientation of a fiber-forming, slowly crystallizing, synthetic polymer composition in fiber form, generally after melt spinning, such orientation resulting from application of a longitudinal tensile force to said fiber above the crystallization temperature range and maintaining it at least through such range during a controlled, substantially axially symmetric cooling of the fiber. The novel fibers have a substantially axially symmetric, residual tensile force differential between their outer sheaths and inner portions, are generally of helical configuration and can exhibit more than about fifteen turns per linear centimeter.
摘要翻译： 介绍了与新型，细旦，均质，卷曲合成纤维有关的工艺和成分。 该方法包括纤维形成缓慢结晶的合成聚合物组合物的取向，通常在熔融纺丝之后，通过在结晶温度范围内向所述纤维施加纵向张力而导致这种取向，并至少通过这种方式将其保持 在纤维的受控的，基本上轴向对称的冷却过程中的范围。 新颖的纤维在它们的外护套和内部之间具有基本上轴向对称的残余张力差，通常是螺旋构型，并且每线性厘米可以显示超过约十五圈。
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公开(公告)号：US4241002A
公开(公告)日：1980-12-23
申请号：US909161
申请日：1978-05-24
申请人： Jack R. Knox
发明人： Jack R. Knox
摘要： Process and composition relating to novel, fine denier, homogeneous, curly synthetic fibers are set out. The process comprises orientation of a fiber-forming, slowly crystallizing, synthetic polymer composition in fiber form, generally after melt spinning, such orientation resulting from application of a longitudinal tensile force to said fiber above the crystallization temperature range and maintaining it at least through such range during a controlled, substantially axially symmetric cooling of the fiber. The novel fibers have a substantially axially symmetric, residual tensile force differential between their outer sheaths and inner portions, are generally of helical configuration and can exhibit more than about fifteen turns per linear centimeter.
摘要翻译： 介绍了与新型，细旦，均质，卷曲合成纤维有关的工艺和成分。 该方法包括纤维形成缓慢结晶的合成聚合物组合物的取向，通常在熔融纺丝之后，通过在结晶温度范围内向所述纤维施加纵向张力而导致这种取向，并至少通过这种方式将其保持 在纤维的受控的，基本上轴向对称的冷却过程中的范围。 新颖的纤维在它们的外护套和内部之间具有基本上轴向对称的残余张力差，通常是螺旋构型，并且每线性厘米可以显示超过约十五圈。
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公开(公告)号：US4433118A
公开(公告)日：1984-02-21
申请号：US424854
申请日：1982-09-27
摘要： Compositions comprising a blend of a polyarylate and a poly(methylenebenzoate) wherein said polyarylate is derived from a dihydric phenol and an aromatic dicarboxylic acid, said poly(methylenebenzoate) comprises poly(p-methylenebenzoate), poly(m-methylenebenzoate) and mixtures thereof. These compositions have improved processability relative to the polyarylate, have improved weatherability relative to the poly(methylenebenzoate) and are transparent.
摘要翻译： 包含多芳基化合物和聚（亚甲基苯甲酸酯）的共混物的组合物，其中所述多芳基化合物衍生自二元酚和芳族二羧酸，所述聚（亚甲基苯甲酸酯）包括聚（对亚甲基苯甲酸酯），聚（间亚甲基苯甲酸酯）及其混合物 。 这些组合物相对于多芳基化合物具有改进的加工性能，相对于聚（亚甲基苯甲酸酯）具有改善的耐候性，并且是透明的。
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