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29 条记录 (耗时 0.009 秒)

    Modifying polymers
    1.
    发明授权
    Modifying polymers 失效
    改性聚合物

    公开(公告)号：US3640974A

    公开(公告)日：1972-02-08

    申请号：US3640974D

    申请日：1969-05-05

    申请人： HERCULES INC

    发明人： BRESLOW DAVID S

    IPC分类号： C08F8/30 ,  C08F3/20 ,  C08F27/08

    CPC分类号： C08F8/30 ,  C08F2800/20 ,  C08F2810/20 ,  C08F114/06 ,  C08F214/06 ,  C08F114/08 ,  C08F218/08

    摘要： VINYL CHLORIDE AND VINYLIDENE CHLORIDE POLYMERS CAN BE CROSS-LINKED OR OTHERWISE MODIFIED BY REACTION WITH A POLY (DIAZO) COMPOUND SELECTED FROM THE GROUP OF

    R-(O-CO-CN2-R'')X AND A-(CN2-R'')X

    WHERE X IS AN INTEGER GREATER THAN 1, R IS AN ORGANIC RADICAL INERT TO MODIFICATION REACTIONS, A IS AN AROMATIC RADICAL INERT TO MODIFICATION REACTIONS, AND R'' IS A HYDROGEN, ARYL OR -COOZ RADICAL WHERE Z IS AN ALKYL OR ARYL RADICAL. THE REACTION BETWEEN THE POLY (DIAZO) COMPOUND AND POLYMER CAN BE INITIATED EITHER BY HEATING OR BY EXPOSING TO ULTRAVIOLET RADIATION.

    New polymeric compositions
    5.
    发明授权
    New polymeric compositions 失效
    新型聚合物组合物

    公开(公告)号：US3671609A

    公开(公告)日：1972-06-20

    申请号：US3671609D

    申请日：1970-07-27

    申请人： US NAVY

    发明人： KAUFMAN MARTIN H

    IPC分类号： C08F2/00 ,  C08F36/16 ,  C08F297/02 ,  C08F1/68 ,  C08F3/20 ,  C08F15/02

    CPC分类号： C08F297/02 ,  C08F36/16

    摘要： Polymeric compositions characterized by being fiber-forming and stereospecific and capable of being melted and drawn into strong crystalline filaments and fibers. The compositions are useful as storage stable binders as well as adhesives for fluorcarbon material.

    摘要翻译： 聚合物组合物的特征在于纤维形成和立体特异性并且能够熔融并拉伸成强结晶长丝和纤维。 该组合物可用作储存稳定的粘合剂以及用于氟碳材料的粘合剂。

    Method for preparing vinyl halide polymers having improved processing characteristics and polymers prepared thereby
    7.
    发明授权
    Method for preparing vinyl halide polymers having improved processing characteristics and polymers prepared thereby 失效
    具有改进的加工特性的乙烯基卤聚合物的制备方法和由其制备的聚合物

    公开(公告)号：US3945985A

    公开(公告)日：1976-03-23

    申请号：US174250

    申请日：1971-08-23

    申请人： Leonard Feiler ,  Sheldon F. Gelman

    发明人： Leonard Feiler ,  Sheldon F. Gelman

    IPC分类号： C08F14/00 ,  C08F14/06 ,  C08F3/30 ,  C08F3/20 ,  C08F15/06 ,  C08F15/32

    CPC分类号： C08F14/00 ,  C08F14/06

    摘要： Vinyl halide polymers, preferably polyvinyl chloride, which exhibit improved processing characteristics without sacrificing physical properties are prepared by partially polymerizing vinyl halide monomer at a first reaction temperature and then changing the reaction temperature and continuing the polymerization at a second temperature conducive to forming a polymer of an average molecular weight range different from that obtainable at the first reaction temperature. The product provides the physical characteristics of polymer blends but can be processed without formation of fish eyes.

    摘要翻译： 通过在第一反应温度下部分聚合乙烯基卤单体，然后改变反应温度并在有助于形成聚合物的第二温度下继续聚合来制备在不牺牲物理性能的情况下表现出改善的加工特性的氯乙烯聚合物，优选聚氯乙烯 平均分子量范围与在第一反应温度下可获得的平均分子量范围不同。 该产品提供聚合物共混物的物理特性，但可以加工而不形成鱼眼。

    Method of preparing halogen-containing polymers
    8.
    发明授权
    Method of preparing halogen-containing polymers 失效
    制备含卤素聚合物的方法

    公开(公告)号：US3671469A

    公开(公告)日：1972-06-20

    申请号：US3671469D

    申请日：1969-10-20

    申请人： DOW CHEMICAL CO

    发明人： DOORENBOS HAROLD E

    IPC分类号： C08F2/00 ,  C08G61/02 ,  C08F3/20 ,  C08F13/00

    CPC分类号： C08G61/02

    摘要： Fluorine-, chlorine- and/or bromine-containing polymers are prepared by reacting A. A MONOMER OR MIXTURE OF MONOMERS HAVING THE STRUCTURAL FORMULA R-CX3)n, wherein n is an integer from 2 to 4, X is fluoro, chloro or bromo, and R is an n-valent hydrocarbon or halo-substituted hydrocarbon group, each -CX3 group being an allylic or benzylic trihalomethyl group; with B. CuX and/or CuX2, wherein X has the above meaning, and C. PHOSPHOROUS ACID, ALKYL HYDROGEN PHOSPHONATE AND/OR A DIALKYL HYDROGEN PHOSPHONATE. The polymers are thermally stable at elevated temperatures and are useful as heat-resistant, fire-resistant films, coatings, ablatives and the like.

    High polychloroprenes
    9.
    发明授权
    High polychloroprenes 失效
    高聚氯乙烯

    公开(公告)号：US3660368A

    公开(公告)日：1972-05-02

    申请号：US3660368D

    申请日：1967-06-27

    申请人： DU PONT

    发明人： HARGREAVES CHESTER ARTHUR

    IPC分类号： C08F36/16 ,  C08D3/14 ,  C08F3/20

    CPC分类号： C08F36/16

    摘要： POLYCHLORPORENES WHICH MELT AT TEMPERATURES OF 80*C. AND ABOVE. AT LEAST 95% OF THE CHLOROPRENE UNITS OF THE POLYMER CHAIN ARE TRANS-2-CHLORO-2-BUTEN-1,4-YLENE UNITS AND AT LEAST 95% OF ALL 2-CHLORO-2-BUTEN-1,4-YLENE UNITJS IN THE POLYMER ARE IN THE HEAD-TO-TAIL SEQUENCE. THE POLYCHLOROPRENES ARE PREAPRED BY IRRADIATING CRYSTALLINE CHLOROPRENE AT TEMPERATURES BELOW-130*C.

    Process for polymerizing fluorine-containing monomers using acids of metals as catalyst
    10.
    发明授权
    Process for polymerizing fluorine-containing monomers using acids of metals as catalyst 失效
    使用金属酸作为催化剂聚合含荧光体单体的方法

    公开(公告)号：US3632847A

    公开(公告)日：1972-01-04

    申请号：US3632847D

    申请日：1969-02-25

    申请人： HOECHST AG

    发明人： HARTWIMMER ROBERT

    IPC分类号： C08F14/18 ,  C08F3/20 ,  C08F15/06

    CPC分类号： C08F14/18 ,  C08F2/16

    摘要： THE PRESENT INVENTION IS RELATED TO A PROCESS FOR THE MANUFACTURE OF POLYMERS AND COPOLYMERS OF FLUORINE-CONTAINING OLEFINS AT RELATIVELY LOW TEMPERATURES IN THE RANGE OF FROM 0 TO 50*C. AND AT ATMOSPHERIC OR SLIGHTLY ELEVATED PRESSURE. THE POLYMERIZATION IS CATALYZED BY ACIDS OR SALTS OF ACIDS OF SUBGROUP V TO VII METALS OR BY COMPOUNDS WHICH ARE CONVERTED INTO SUCH ACIDS UNDER THE REACTION CONDITIONS.