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    • 6. 发明授权
    • Microporous films
    • 微孔膜
    • US5198162A
    • 1993-03-30
    • US367740
    • 1989-06-13
    • George B. ParkJohn A. CookMike G. L. DorlingDavid J. BarkerRobert H. McLoughlin
    • George B. ParkJohn A. CookMike G. L. DorlingDavid J. BarkerRobert H. McLoughlin
    • C08J9/26C25B13/08H01M2/16
    • C08J9/26C25B13/08H01M2/1653C08J2201/0444C08J2201/0464C08J2323/04C08J2327/12H01M2300/0017H01M2300/002H01M2300/0025
    • A microporous polymeric film of high porosity comprises a halopolymer in which the repeating units are --(C.sub.n H.sub.2n)-- and --(C.sub.m X.sub.2m)-- in which each X independently represents fluorine or chlorine and the values of n and m are greater than one and less than six. The film is the result of firstly melt processing a mixture of the halopolymer, more than 150 parts by weight of an extractable salt and not more than 80 parts by weight of an extractable polymer per 100 parts by weight of the halopolymer, the extractable polymer not being completely and homogeneously mixed with the halopolymer and being less viscous than the halopolymer when both are molten so that the surfaces of the film resulting from melt processing are rich in the extractible polymer, and secondly extracting at least some of the extractable salt to render the film porous and extracting at least some of said polymer to impart surface porosity to the film. The film has a porosity of more than 50% by volume and more usually 60-70%. The film may be used as the separator of an electrochemical cell e.g. a battery having a lithium anode and a thionyl chloride electrolyte.
    • 高孔隙率的微孔聚合物膜包括其中重复单元为 - (C n H 2n) - 和 - (C m X 2 m) - 的卤代聚合物,其中每个X独立地表示氟或氯,并且n和m的值大于1和小于 六。 该膜是首先将卤代聚合物的混合物熔融加工的结果,每100重量份的卤代聚合物,超过150重量份的可萃取盐和不超过80重量份的可萃取聚合物,所述可萃取聚合物不是 与卤代聚合物完全和均匀地混合,并且当两者都熔融时比卤代聚合物粘度小,使得由熔融加工产生的膜的表面富含可萃取的聚合物,其次提取至少一些可提取盐,使得 薄膜多孔并提取至少一些所述聚合物以赋予膜表面多孔性。 该膜的孔隙率大于50体积%,更通常为60-70%。 该膜可以用作电化学电池的隔板,例如, 具有锂阳极和亚硫酰氯电解质的电池。
    • 9. 发明授权
    • Method of making heat shrinkable articles
    • 制作热收缩制品的方法
    • US4425174A
    • 1984-01-10
    • US302887
    • 1981-09-16
    • Robert H. McLoughlin
    • Robert H. McLoughlin
    • B29C61/08B29C45/00B29C55/22B29C61/00B29C61/06B29C65/66B29K105/02B29L31/34H01B17/58H01B19/00H02G15/18B29D23/00B32B31/04
    • B29C61/06H02G15/1806Y10S174/08Y10T156/1038
    • A process for the production of a heat shrinkable article which comprises forming bonds between regions of at least two superimposed lengths of polymeric material to produce a bonded article so disposed that the desired direction of heat shrinkability lies along the length of the bonded article, cross-linking the bonded article and the bonds between the said lengths of polymeric material, heating the bonded article, stretching the bonded article longitudinally and cooling it (which may comprise allowing it to cool naturally in the stretched condition) to render the articles heat shrinkable. Pneumatic or other methods of expansion may be used in addition to the stretching to render hollow articles heat-shrinkable, the combination of stretching and another such method being advantageous in achieving high expansion ratios while maintaining a reasonable degree of symmetry in the finished hollow recoverable articles.
    • 一种用于生产热收缩制品的方法,其包括在至少两个重叠长度的聚合物材料的区域之间形成粘合,以产生如此设置的粘合制品,使得所需的热收缩方向沿着粘合制品的长度, 将粘合制品和所述长度的聚合物材料之间的粘合物连接起来,加热结合的制品,纵向拉伸粘结制品并冷却(其可包括使其在拉伸状态下自然冷却),以使制品热收缩。 除了拉伸之外还可以使用气动或其他膨胀方法来制造可热收缩的中空制品,拉伸和另一种这种方法的组合有利于实现高膨胀比,同时在成品空心可回收制品中保持合理的对称度 。