Process for production of liquid chloroprene polymer
    81.
    发明授权
    Process for production of liquid chloroprene polymer 失效
    液态氯丁二烯聚合物生产工艺

    公开(公告)号:US3919281A

    公开(公告)日:1975-11-11

    申请号:US47049074

    申请日:1974-05-16

    CPC分类号: C08F36/18 C08C3/02 C08F36/16

    摘要: wherein R can contain from 1 to 12 carbon atoms and is an alkyl group, an aryl group, an aralkyl group or a cycloaliphatic group, which is present in an amount substantially equal to a ratio of about 2.5 to 20 parts by weight of diethyl xanthogen disulfide per 100 parts by weight of the total monomer. The chloroprene based liquid polymer is purified by contacting the polymer or the polymer containing solution with an alcohol represented by the formula: R1OH wherein R1 is an alkyl group containing 1 to 5 carbon atoms, to remove any unreacted xanthogen disulfide compound.

    A process for preparing a chloroprene based liquid polymer having active terminal groups substantially at the terminals thereof comprising polymerizing chloroprene alone or in combination with one or more monomers copolymerizable with chloroprene in (1) an organic solvent having a boiling point of about 160*C or less at atmospheric pressure and selected from the group consisting of aromatic hydrocarbons, aliphatic halogenated hydrocarbons and cyclic ethers, or (2) in carbon disulfide, which is present in an amount of about 20 to 200 parts by weight per 100 parts by weight of the total monomer, in the presence of a xanthogen disulfide compound represented by the formula:

    摘要翻译: 一种制备基本上在其末端具有活性末端基团的氯丁二烯基液体聚合物的方法,其包括在(1)沸点为约160℃的有机溶剂中单独聚合氯丁二烯或与氯丁二烯共聚的一种或多种单体组合,或 在大气压下较少,选自芳族烃,脂族卤代烃和环醚,或(2)在二硫化碳中,其存在量为每100重量份的约20至200重量份 在由式(ROCS-)2 PARALLEL S表示的黄原二硫化物存在下,其中R可以含有1至12个碳原子并且是烷基,芳基,芳烷基或脂环族基团 ,其存在量基本上等于每100重量份总量的约2.5至20重量份的二乙基黄原二硫化物的比例 单体。 通过使聚合物或含有聚合物的溶液与由式R1OH表示的醇(其中R1是含有1至5个碳原子的烷基)接触来纯化氯丁二烯类液体聚合物,以除去任何未反应的黄原硫化物。

    Polymer
    82.
    发明授权
    Polymer 失效
    聚合物

    公开(公告)号:US3856730A

    公开(公告)日:1974-12-24

    申请号:US39598273

    申请日:1973-09-10

    发明人: WALKER D BRANLARD P

    IPC分类号: C08F36/16 C08D9/12

    CPC分类号: C08F36/16

    摘要: Polychloroprene latices having improved ''''wet strength'''' are made by polymerising chloroprene in the presence of a watersoluble salt of a mercapto organic carboxylic acid.

    摘要翻译: 具有改善的“湿强度”的聚氯丁二烯胶乳通过在巯基有机羧酸的水溶性盐的存在下聚合氯丁二烯来制备。

    Polymerization of 2-chlorobutadiene-1,3
    83.
    发明授权
    Polymerization of 2-chlorobutadiene-1,3 失效
    2-氯代二苯胺-1,3的聚合

    公开(公告)号:US3806712A

    公开(公告)日:1974-04-23

    申请号:US28409672

    申请日:1972-08-28

    发明人: HART B

    IPC分类号: C08F36/16 G01N25/42 G06G7/58

    CPC分类号: C08F36/16 Y10T436/12

    摘要: A process for polymerizing 2-chlorobutadiene-1,3 in an emulsion system, said process incorporating an improved method of adding a short-stopping agent to the reaction mass to terminate the polymerization at a pre-set degree of conversion of monomer to polymer.

    摘要翻译: 一种在乳液体系中聚合2-氯丁二烯-1,3的方法,所述方法包括向反应物质中加入短暂停止剂的改进方法,以在单体转化为聚合物的预设度下终止聚合。

    Viscosity stable chloroprene sulfur polymer and its preparation
    85.
    发明授权
    Viscosity stable chloroprene sulfur polymer and its preparation 失效
    粘度稳定的氯仿硫磺聚合物及其制备

    公开(公告)号:US3766121A

    公开(公告)日:1973-10-16

    申请号:US3766121D

    申请日:1972-08-30

    申请人: DU PONT

    发明人: FICHTMAN W

    IPC分类号: C08F36/16 C08D7/00

    CPC分类号: C08F36/16

    摘要: PROCESS FOR PRODUCING A VISCOSITY STABLE CHLOROPRENE/ SULFUR POLYMER BY POLYMERIZING IN AQUEOUS EMULSION IN THE PRESENCE OF A DIALKYL ZANTHOGEN DISULFIDE AND AN ALKALI SULFITE OR ALKALI THIOSULFATE. ALSO CHLOROPRENE/SULFUR POLYMER HAVING IMPROVED VISCOSITY STABILITY PREPARED THEREBY.

    New polymeric compositions
    87.
    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

    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。