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323 条记录 (耗时 0.015 秒)

    Method for manufacturing polyoxazole and polythiazole precursors
    31.
    发明授权
    Method for manufacturing polyoxazole and polythiazole precursors 失效
    聚恶唑和多噻唑前体的制备方法

    公开(公告)号：US4622285A

    公开(公告)日：1986-11-11

    申请号：US716767

    申请日：1985-03-27

    申请人： Hellmut Ahne

    发明人： Hellmut Ahne

    IPC分类号： C08G73/00 ,  C08G69/42 ,  C08G73/06 ,  C08G73/08 ,  C08G73/22 ,  C08G75/00 ,  C08G75/32 ,  H01B3/30 ,  C08G65/40 ,  G03C5/00

    CPC分类号： C08G75/32 ,  C08G73/08 ,  C08G73/22 ,  H01B3/303

    摘要： Oligomeric and/or polymeric polyoxazole and polythiazole precursors can be prepared with high purity, i.e., especially without chloride, in a simple manner if an aromatic and/or heterocyclic dihydroxy, dialkoxy or diaryloxydiamino compound or a corresponding dithio compound is reacted with a dicarboxylic acid in the presence of a carbodiimide. The precursors prepared in this manner are suitable, for instance, for the manufacture of protection and insulating layers.

    摘要翻译： 如果芳族和/或杂环二羟基，二烷氧基或二芳氧基二氨基化合物或相应的二硫代化合物与二羧酸反应，则可以以简单的方式制备低聚和/或聚合的聚恶唑和聚噻唑前体， 在碳二亚胺的存在下。 以这种方式制备的前体是适合的，例如用于制造保护层和绝缘层。

    1,2,4-Oxadiazole elastomers
    32.
    发明授权
    1,2,4-Oxadiazole elastomers 失效
    1,2,4-恶二唑弹性体

    公开(公告)号：US4245085A

    公开(公告)日：1981-01-13

    申请号：US28301

    申请日：1979-04-09

    申请人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Robert W. Rosser ,  Ibrahim M. Shalhoub ,  Hanoi Kwong

    发明人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Robert W. Rosser ,  Ibrahim M. Shalhoub ,  Hanoi Kwong

    IPC分类号： C08G73/08

    CPC分类号： C08G73/08

    摘要： New crosslinked 1,2,4-oxadiazole elastomers have been prepared by thermally condensing (a) monomer having the formula H.sub.2 N(HON)C-R-Q, wherein Q is a triazine ring-forming group such as nitrile or amidine, or (b) a mixture of said monomer with R[C(NOH)NH.sub.2 ].sub.2, with R in these formulas standing for a bivalent organic radical having the formula--(CX.sub.2).sub.p --, or --CFY(OCF.sub.2 CFY).sub.m O(CX.sub.2).sub.p O(CFYCF.sub.2 O).sub.n CFY--wherein X is fluorine or hydrogen, Y is fluorine or trifluoromethyl, p ranges from 1 to 18, and m+n ranges from 2 to 7. In the monomer charge, the overall proportions of amidoxime groups to triazine ring-forming groups varies depending on the extent of crosslinking desired in the final polymer.The heat and chemical resistant elastomers disclosed can serve, for instance, as adhesives, caulking compounds, channel sealants, fuel tank liners.

    摘要翻译： 通过将（a）具有式H2N（HON）CRQ的单体（其中Q是三嗪环形成基团如腈或脒）或（b）混合物（a）混合，制备新的交联的1,2,4-恶二唑弹性体 的所述单体与R [C（NOH）NH 2] 2反应，其中这些式中的R代表具有式 - （CX2）对 - 或-CFY（OCF2CFY）mO（CX2）pO（CFYCF2O）nCFY的二价有机基团 - 其中X为氟或氢，Y为氟或三氟甲基，p为1至18，m + n为2至7.在单体电荷中，偕胺肟基与三嗪环形成基团的总比例随 在最终聚合物中所需的交联程度。 所公开的耐热和耐化学性弹性体可以用作例如粘合剂，填缝化合物，通道密封剂，燃料箱衬里。

    Process for continuously preparing shaped articles of aromatic oxadiazole or aromatic oxadiazole/N-alkylhydrazide polymers from monomer solutions
    34.
    发明授权
    Process for continuously preparing shaped articles of aromatic oxadiazole or aromatic oxadiazole/N-alkylhydrazide polymers from monomer solutions 失效
    用于从单体溶液连续制备芳族恶二唑或芳族恶二唑/ N-烷基酰肼聚合物的成型制品的方法

    公开(公告)号：US4054633A

    公开(公告)日：1977-10-18

    申请号：US686206

    申请日：1976-05-13

    申请人： John C. Richardson

    发明人： John C. Richardson

    IPC分类号： D01F6/74 ,  C08G73/08 ,  D01F6/78 ,  D01F6/00

    CPC分类号： C08G73/08 ,  D01F6/78

    摘要： An economical process for continuously producing shaped articles of aromatic oxadiazole or aromatic oxadiazole/N-alkylhydrazide polymers from certain monomer solutions is provided. The process involves continuously feeding monomer solution into a heated, pressurized continuous reactor to provide dope which is continuously extruded into an aqueous medium to provide a shaped article.

    摘要翻译： 提供了从某些单体溶液连续生产芳族恶二唑或芳族恶二唑/ N-烷基酰肼聚合物的经济方法。 该方法包括将单体溶液连续供给到加热的加压连续反应器中以提供涂料，将其连续挤出到水性介质中以提供成型制品。

    Permselective membranes of diacyl hydrazide-containing aromatic polymers having selected metals complexed therewith
    35.
    发明授权
    Permselective membranes of diacyl hydrazide-containing aromatic polymers having selected metals complexed therewith 失效
    具有选择的金属络合的含二酰基酰肼的芳族聚合物的选择性膜

    公开(公告)号：US3954607A

    公开(公告)日：1976-05-04

    申请号：US497048

    申请日：1974-08-09

    申请人： Robert Allen Halling

    发明人： Robert Allen Halling

    IPC分类号： B01D67/00 ,  B01D69/14 ,  B01D71/58 ,  C08G73/08 ,  B01D13/00

    CPC分类号： B01D67/0093 ,  B01D69/141 ,  B01D71/58 ,  C08G73/08

    摘要： Permselective membranes comprising hydrazide-containing aromatic polymers complexed with selected metals that form square planar coordination complexes therewith; the membranes being prepared by reacting the polymer with a salt solution of the selected metal so that the metal is incorporated into the resulting membranes; the membranes being useful, among other things, for the reverse osmosis separation of a salt solute from an aqueous solvent.

    摘要翻译： 包含与选择的金属络合的含酰肼的芳族聚合物的选择性膜与其形成正方形平面配位络合物; 所述膜通过使所述聚合物与所选择的金属的盐溶液反应而制备，使得所述金属被结合到所得的膜中; 除了其它之外，该膜可用于盐溶质与水性溶剂的反渗透分离。

    Amide oxadiazole polymers and polymer precursors
    40.
    发明授权
    Amide oxadiazole polymers and polymer precursors 失效
    酰胺氧基聚合物和聚合物前体

    公开(公告)号：US3642711A

    公开(公告)日：1972-02-15

    申请号：US3642711D

    申请日：1968-09-20

    申请人： ASHLAND OIL INC

    发明人： CULBERTSON BILLY M

    IPC分类号： C08G73/08 ,  C08G20/00

    CPC分类号： C08G73/08

    摘要： THERMALLY STABLE FIBERS AND FILMS HAVE BEEN PREPARED BY REACTION OF EQUIMOLAR QUANTITIES OF AN AMINO AROYL HYDRAZIDE AND AN ACID DICHLORIDE. THE POLYMERS CAN BE CONVERTED TO THE CORRESPONDING AMIDE-OXADIAZOLE POLYMERS BY DEHYDRATION.