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38 条记录 (耗时 0.028 秒)

    Membranes containing microporous structure
    1.
    发明授权
    Membranes containing microporous structure 失效
    含微孔结构的膜

    公开(公告)号：US4775474A

    公开(公告)日：1988-10-04

    申请号：US936547

    申请日：1986-12-01

    申请人： Chieh-Chun Chau ,  Charles E. Reineke ,  Lu H. Tung ,  Edward J. Kramer

    发明人： Chieh-Chun Chau ,  Charles E. Reineke ,  Lu H. Tung ,  Edward J. Kramer

    IPC分类号： B01D67/00 ,  C08J7/02 ,  B01D13/00

    CPC分类号： B01D67/0093 ,  B01D67/0023 ,  B01D69/02 ,  C08J7/02 ,  B01D2323/30 ,  B01D2323/385 ,  B01D2325/022

    摘要： Asymmetric membranes are prepared by treating a major surface of a glassy polymer composition to render the surface resistant to solvent crazing and then contacting the glassy polymer composition with a crazing solvent. The crazing solvent permanently deforms the glassy polymer composition by forming a microporous structure on the untreated surface. The treated surface becomes the dense, discriminating layer of the membrane which achieves desirable permeation selectivity. The methods of treatment are (1) crosslinking, (2) providing an agent which renders the surface resistant to crazing, and (3) providing an agent which reacts with the surface. Additionally, the glassy polymer composition can be crosslinked before or after it is crazed to increase the mechanical strength of the membrane.

    摘要翻译： 通过处理玻璃状聚合物组合物的主表面以使表面耐溶剂裂纹，然后使玻璃状聚合物组合物与裂纹溶剂接触来制备不对称膜。 裂纹溶剂通过在未处理的表面上形成微孔结构而使玻璃状聚合物组合物永久变形。 经处理的表面变成膜的致密区分层，达到理想的渗透选择性。 处理方法是（1）交联，（2）提供使表面耐龟裂的试剂，和（3）提供与表面反应的试剂。 此外，玻璃状聚合物组合物可以在其被蠕动之前或之后交联以增加膜的机械强度。

    Controlled release of water to an oxygen scavenger
    3.
    发明授权
    Controlled release of water to an oxygen scavenger 有权
    控制释放到除氧剂中

    公开(公告)号：US09332782B2

    公开(公告)日：2016-05-10

    申请号：US12778629

    申请日：2010-05-12

    申请人： George E. McKedy ,  Chieh-Chun Chau ,  Stanislav E. Solovyov

    发明人： George E. McKedy ,  Chieh-Chun Chau ,  Stanislav E. Solovyov

    IPC分类号： C09K15/04 ,  B65D85/00 ,  A23L3/3436 ,  B01J20/30 ,  B01J20/34 ,  B01J20/02 ,  B01J20/28

    CPC分类号： A23L3/3436 ,  B01J20/0229 ,  B01J20/2805 ,  B01J20/3085 ,  B01J20/3433

    摘要： The invention relates to an article for oxygen absorption that is a container containing a water-soluble on source, a water activated oxygen scavenger, and a rupturable canister of hydrated polymer. The hydrated polymer comprises a superabsorbent polymer. The water-soluble on source comprises a salt. The invention in another embodiment relates to a method for providing timed oxygen absorption using the article as above with rupturing of the canister to release the water carrying superabsorbent such that it will contact the oxygen scavenger and on source thereby leading to activating the oxygen scavenger.

    摘要翻译： 本发明涉及一种氧吸收制品，它是一种含有水溶性源的容器，水活化氧清除剂和水合聚合物的可破裂罐。 水合聚合物包含超吸收聚合物。 水溶性源包含盐。 在另一个实施方案中的本发明涉及使用上述制品提供定时氧吸收的方法，其中罐的破裂释放载水超吸收剂，使得其将与除氧剂和源接触，从而导致氧清除剂的活化。

    Process for the preparation of polybenzoxazole and polybenzothiazole filaments and fibers
    5.
    发明授权
    Process for the preparation of polybenzoxazole and polybenzothiazole filaments and fibers 失效
    制备聚苯并恶唑和聚苯并噻唑长丝和纤维的方法

    公开(公告)号：US5976447A

    公开(公告)日：1999-11-02

    申请号：US668784

    申请日：1996-06-24

    申请人： Michael E. Mills ,  Willard Alexander ,  Timothy L. Faley ,  Chieh-Chun Chau

    发明人： Michael E. Mills ,  Willard Alexander ,  Timothy L. Faley ,  Chieh-Chun Chau

    IPC分类号： D06B9/00 ,  D01F6/74 ,  D01F6/86 ,  D01F6/26

    CPC分类号： D01F6/74

    摘要： A continuous process for heating a polybenzazole or polybenzothiazole filament, which includes the step of heating the filament to a temperature of at least 100.degree. C. but no greater than 290.degree. C. while applying a tension thereto of at least 3.5 grams per denier, which is carried out at a line speed of at least 100 m/minute; and there is no prior or subsequent heating of the fiber to any temperature greater than 300.degree. C. It has been discovered that placing tension on the filament while it is dried increases its tensile modulus without a significant decrease in its tensile strength.

    摘要翻译： 一种用于加热聚吲哚或聚苯并噻唑长丝的连续方法，其包括将长丝加热至至少100℃但不高于290℃的温度，同时向其施加至少3.5克/旦尼尔的张力， 其以至少100m /分钟的线速度进行; 并且没有将纤维预先或随后加热到大于300℃的任何温度。已经发现在干燥时在丝上张力增加了其拉伸模量而不显着降低拉伸强度。

    Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends
    6.
    发明授权
    Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends 失效
    通过聚合物共混物溶剂萃取聚合物组分制备不对称膜

    公开(公告)号：US4868222A

    公开(公告)日：1989-09-19

    申请号：US67321

    申请日：1987-06-29

    申请人： Chieh-Chun Chau ,  Ritchie A. Wessling

    发明人： Chieh-Chun Chau ,  Ritchie A. Wessling

    IPC分类号： B01D67/00 ,  C08J9/00 ,  C08J9/26

    CPC分类号： B01D67/0093 ,  B01D67/003 ,  B01D69/02 ,  C08J9/00 ,  C08J9/26 ,  B01D2323/30 ,  B01D2325/022

    摘要： Asymmetric membranes are prepared by selectively treating a major surface of an incompatible polymer blend prepared by melt blending having at least one extractable polymer component and then contacting the polymer blend with a solvent to extract the extractable polymer component. The treated surface becomes the dense layer of the membrane. The major surface is treated by crosslinking, by contacting the surface with a crosslinking agent which is subsequently cured, or by contacting the surface with an agent which reacts with groups on the surface and imparts a polar character to it.

    摘要翻译： 通过选择性地处理由具有至少一种可提取聚合物组分的熔融共混制备的不相容的聚合物共混物的主表面，然后使聚合物共混物与溶剂接触以提取可萃取的聚合物组分来制备不对称膜。 被处理的表面变成膜的致密层。 主表面通过交联处理，通过使表面与随后固化的交联剂接触，或通过使表面与与表面上的基团反应并赋予其极性特性的试剂接触来处理。

    Process for post-spin finishing of polybenzoxazole fibers
    9.
    发明授权
    Process for post-spin finishing of polybenzoxazole fibers 失效
    聚苯并恶唑纤维的后纺整理工艺

    公开(公告)号：US5417915A

    公开(公告)日：1995-05-23

    申请号：US162724

    申请日：1993-12-03

    申请人： Chieh-Chun Chau ,  Jang-hi Im

    发明人： Chieh-Chun Chau ,  Jang-hi Im

    IPC分类号： D01F6/74 ,  D01F6/26

    CPC分类号： D01F6/74

    摘要： Improved polybenzoxazole fibers are made by a process for drying a wet, coagulated polybenzoxazole (PBO) fiber including the steps of:(a) drying the fiber at a temperature of no more than 300.degree. C. under a tension of at least about 1 gram per denier (gpd) until it retains no more than about 120 weight percent residual moisture content;(b) further drying the fiber at a temperature of no more than 300.degree. C., either with or without tension, until it contains no more than about 20 percent residual moisture content; and(c) heat-treating the fiber at a temperature of at least about 300.degree. C. under tension.

    摘要翻译： 改进的聚苯并恶唑纤维通过干燥湿凝固的聚苯并恶唑（PBO）纤维的方法制备，包括以下步骤：（a）在至少约1克的张力下，在不超过300℃的温度下干燥纤维 （gpd），直到其保持不超过约120重量％的残余水分含量; （b）在不超过300℃的温度下进一步干燥纤维，无论是否具有张力，直到其含有不超过约20％的残余水分含量; 和（c）在张力下在至少约300℃的温度下热处理纤维。