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452 条记录 (耗时 0.032 秒)

    Process for preparing polyalkylene polyamine polyethers
    51.
    发明授权
    Process for preparing polyalkylene polyamine polyethers 失效
    聚亚烷基多胺聚醚的制备方法

    公开(公告)号：US4191820A

    公开(公告)日：1980-03-04

    申请号：US866206

    申请日：1978-01-03

    申请人： William K. Langdon

    发明人： William K. Langdon

    IPC分类号： C02F1/54 ,  C08G73/02 ,  D21H17/54 ,  C08G65/26

    CPC分类号： C02F1/54 ,  C08G73/024 ,  D21H17/54

    摘要： Non-gelled polyalkylenepolyamine polyethers are prepared by the reaction of ethylenediamine and polyepichlorohydrin in the presence of an organic solvent. The solvent enables the reactants to be present at less than a 3:1 ratio of polyamine per chlorine atom.

    摘要翻译： 非凝胶状聚亚烷基多胺聚醚通过乙二胺和聚表氯醇在有机溶剂的存在下反应来制备。 溶剂使反应物以每氯原子少于3:1的多胺比例存在。

    Combined cathode and diaphragm unit for electrolytic cells
    52.
    发明授权
    Combined cathode and diaphragm unit for electrolytic cells 失效
    电解槽组合阴极和隔膜单元

    公开(公告)号：US4182670A

    公开(公告)日：1980-01-08

    申请号：US924895

    申请日：1978-07-17

    申请人： Shyam D. Argade ,  Thomas G. Coker

    发明人： Shyam D. Argade ,  Thomas G. Coker

    IPC分类号： C25B9/08 ,  C25B11/00 ,  C25B11/06 ,  C25B11/03 ,  C25B13/04

    CPC分类号： C25B11/00 ,  C25B9/08

    摘要： An especially efficient and durable electrolytic cell is provided by utilizing a combined cathode and diaphragm unit wherein the cathode is made by spray coating a ferrous metal substrate with a powder metal having lower hydrogen overvoltage than said substrate to form a protected cathode surface having a larger surface area than the substrate, and vacuum depositing a polymer impregnated asbestos fiber diaphragm onto a spray coated surface of the cathode to form a fibrous diaphragm thereon. Preferably, the cathode surface is made with nickel and the polymer impregnated asbestos diaphragm contains from about 10 to about 30 percent based on the weight of asbestos of an organic cementing agent such as a fluorohydrocarbon polymer.

    摘要翻译： 通过利用组合的阴极和隔膜单元提供了一种特别有效和耐用的电解池，其中阴极通过用具有比所述基底更低的氢过电压的粉末金属喷涂黑色金属基底来形成具有较大表面的受保护阴极表面 面积，并将聚合物浸渍的石棉纤维隔膜真空沉积到阴极的喷涂表面上以在其上形成纤维膜。 优选地，阴极表面由镍制成，并且聚合物浸渍的石棉隔膜含有基于有机粘合剂如氟代烃聚合物的石棉重量的约10至约30％。

    Combined cathode and diaphragm unit for electrolytic cells
    53.
    发明授权
    Combined cathode and diaphragm unit for electrolytic cells 失效
    电解槽组合阴极和隔膜单元

    公开(公告)号：US4175023A

    公开(公告)日：1979-11-20

    申请号：US924896

    申请日：1978-07-17

    申请人： Shyam D. Argade ,  Thomas G. Coker

    发明人： Shyam D. Argade ,  Thomas G. Coker

    IPC分类号： C25B9/00 ,  C25B13/08 ,  C25B11/03 ,  C25B11/04

    CPC分类号： C25B9/00 ,  C25B13/08

    摘要： An especially efficient and durable electrolytic cell is provided by utilizing a combined cathode and diaphragm unit wherein the cathode is made by spray coating a ferrous metal substrate with a powder metal having lower hydrogen overvoltage than said substrate to form a protected cathode surface having a larger surface area than the substrate, and vacuum depositing fluorinated hydrocarbon polymer fibers onto the spray coated surface of the cathode to form a fibrous diaphragm securely adhered thereto. Preferably, the cathode surface is made with nickel and the fluorinated hydrocarbon polymer is selected from the group consisting of homopolymers of chlorotrifluoroethylene and copolymers of chlorotrifluoroethylene and at least one compatible monomer with units of chlorotrifluoroethylene accounting for at least 80 percent of the monomeric units of said copolymer.

    摘要翻译： 通过利用组合的阴极和隔膜单元提供了一种特别有效和耐用的电解池，其中阴极通过用具有比所述基底更低的氢过电压的粉末金属喷涂黑色金属基底来形成具有较大表面的受保护阴极表面 面积，并将氟化烃聚合物纤维真空沉积到阴极的喷涂表面上，以形成牢固粘附在其上的纤维膜。 优选地，阴极表面由镍制成，氟化烃聚合物选自氯三氟乙烯的均聚物和氯三氟乙烯与至少一种相容单体与三氟氯乙烯单元的共聚物，占三氟氯乙烯单元的至少80％，占所述 共聚物。

    Preparation of N-substituted carbamates
    56.
    发明授权
    Preparation of N-substituted carbamates 失效
    N-取代氨基甲酸酯的制备

    公开(公告)号：US4147716A

    公开(公告)日：1979-04-03

    申请号：US912461

    申请日：1978-06-05

    申请人： Rack H. Chung

    发明人： Rack H. Chung

    IPC分类号： C07C271/06 ,  C07C125/04

    CPC分类号： C07C271/06

    摘要： A method of preparing an N-substituted carbamate comprising reacting by heating in sulfolane at a temperature ranging from about 65.degree. C. to about 100.degree. C. (1) an alkali metal cyanate, (2) at least one sulfolane-soluble organic halide of the formula RX wherein X is halogen and R represents a radical selected from the group consisting of alkyl, alkenyl, aralkyl and aralkenyl, and (3) at least one sulfolane-soluble non-aromatic monohydric or polyhydric alcohol, and isolating the N-substituted carbamate thereby produced from the resulting reaction mass.

    摘要翻译： 一种制备N-取代氨基甲酸酯的方法，包括在环丁砜中加热至约65℃至约100℃的温度进行反应。（1）碱金属氰酸酯，（2）至少一种环丁砜可溶性有机卤化物 式RX的化合物，其中X是卤素，R代表选自烷基，烯基，芳烷基和芳烯基的基团，和（3）至少一种环丁砜可溶非芳族一元或多元醇， 由所得反应物质产生的取代的氨基甲酸酯。

    Novel prepolymers, flame retardant interpolymers prepared therefrom, and processes for the preparation thereof
    59.
    发明授权
    Novel prepolymers, flame retardant interpolymers prepared therefrom, and processes for the preparation thereof 失效

    公开(公告)号：US4125489A

    公开(公告)日：1978-11-14

    申请号：US892338

    申请日：1978-03-31

    申请人： Thirumurti Narayan ,  Moses Cenker

    发明人： Thirumurti Narayan ,  Moses Cenker

    IPC分类号： C08G16/02 ,  C08G18/54 ,  C08J9/00

    CPC分类号： C08G16/0262 ,  C08G18/542

    摘要： Liquid prepolymers are prepared by interpolymerizing monomers including a hydroxy aromatic compound, an aldehyde and furfuryl alcohol. The resultant liquid prepolymers have a viscosity of about 100-500,000 centipoises at 25.degree. C. and contain about 1.1-6 moles of interpolymerized aldehyde and about 3.1-15 moles of interpolymerized furfuryl alcohol for each mole of interpolymerized hydroxy aromatic compound. The prepolymers are highly reactive and may be polymerized with or without other monomers to produce flame retardant solid or cellular interpolymers. In one variant, flame retardant solid or cellular polymers are produced by interpolymerizing organic polyisocyanates with the prepolymers. In another variant, solid or cellular interpolymers are produced by polymerizing the prepolymers without monomers such as polyisocyanate in the presence of unreacted furfuryl alcohol. Processes are provided for preparing the aforementioned novel liquid prepolymers and solid or cellular interpolymers.

    Process for the preparation of foams characterized by isocyanurate and urethane linkages
    60.
    发明授权
    Process for the preparation of foams characterized by isocyanurate and urethane linkages 失效
    用于制备以异氰脲酸酯和氨基甲酸酯键为特征的泡沫的方法

    公开(公告)号：US4110270A

    公开(公告)日：1978-08-29

    申请号：US794174

    申请日：1977-05-05

    申请人： Thirumurti Narayan

    发明人： Thirumurti Narayan

    IPC分类号： C08G18/10 ,  C08G18/22 ,  C08G18/14 ,  C08G18/48

    CPC分类号： C08G18/225 ,  C08G18/10 ,  C08G2105/02 ,  Y10S521/902

    摘要： Foams characterized by isocyanurate and urethane linkages are prepared by condensing: (a) an organic polyisocyanate with a polyol or (b) a quasi-prepolymer in the presence of a blowing agent and a catalytically effective amount of an alkali metal salt of an organic sulfinic acid. The catalysts of the invention offer the advantages of longer cream times and fully cured foams in acceptable times thus finding particular utility in pour-in-place and slab stock foaming applications.

    摘要翻译： 通过将（a）有机多异氰酸酯与多元醇缩合制备的泡沫，或（b）准预聚物在发泡剂存在下和催化有效量的有机亚磺酸碱金属盐的存在下制备 酸。 本发明的催化剂具有较长的乳化时间和在可接受的时间内完全固化的泡沫的优点，从而在浇注和板坯发泡应用中具有特别的用途。