Process for polymerization of chloroprene
    1.
    发明授权
    Process for polymerization of chloroprene 失效
    氯丁二烯聚合方法

    公开(公告)号:US4975501A

    公开(公告)日:1990-12-04

    申请号:US399333

    申请日:1989-08-28

    CPC分类号: C08F36/18

    摘要: The polymerization of chloroprene leads to non-colored products when a mixture of 2.0 to 5.0% by weight of a salt of disproportionated abietic acid and 0.1 to 1.0% by weight, in each case relative to the total amount of monomer, of a compound of the formula ##STR1## in which R.sub.1 and R.sub.2, independently of one another, denote hydrogen or CH.sub.3,m denotes a number from 0 to 14,n denotes a number from 0 to 13,p denotes a number from 0 to 2, andy denotes hydrogen, Na or K, andthe total number of aliphatic carbon atoms is 11 to 15,is used as emulsifier, the emulsifiers having the advantage of being biologically degradable.

    摘要翻译: 氯丁二烯的聚合导致当2.0%至5.0%重量比例的歧化松香酸和0.1至1.0%重量(在每种情况下相对于单体的总量)的混合物的混合物中的无色产物为 式中,R 1和R 2彼此独立地表示氢或CH 3,m表示0〜14的数,n表示0〜13的数,p表示0〜2的数,y表示 表示氢,Na或K,脂族碳原子的总数为11〜15,用作乳化剂,乳化剂具有生物可降解的优点。

    Polymerization of chloroprene
    3.
    发明授权
    Polymerization of chloroprene 失效
    氯丁二烯的聚合

    公开(公告)号:US4786698A

    公开(公告)日:1988-11-22

    申请号:US132975

    申请日:1987-12-15

    CPC分类号: C08F36/18

    摘要: Gel-free polychloroprene is obtained, at high monomer conversions, using a polymerization initiator comprising sodium dithionite or a mixture of sodium dithionite with formamidinesulphinic acid or with potassium peroxydisulphate or with formamidinesulphinic acid and potassium peroxodisulphate or with potassium peroxodisulphate and sodium anthraquinon-.beta.-sulphonate or with formamidinesulphinic acid and potassium peroxodisulphate and sodium anthraquinone-.beta.-sulphonate, and in the presence of oxygen and a chain transfer agent when 30 to 90% of the initiator is present at the commencement of polymerization and the remainder is added in portions during the polymerization, only further sodium dithionite being added at a conversion >60% in the case of an initiator combination, and when 20 to 80% by weight of the total amount of chain transfer agents is present before or at the commencement of polymerization and the remaining amount is added in one or more parts at monomer conversions of greater than 20%.

    摘要翻译: 使用包含连二亚硫酸钠或连二亚硫酸钠与甲酰胺亚磺酸钠或与过氧二硫酸钾或与甲脒亚磺酸和过氧二硫酸钾或与过氧二硫酸钾和蒽醌-β-磺酸钠的混合物的聚合引发剂,以高单体转化率获得无凝胶的聚氯丁二烯 或与甲酰胺亚磺酸和过二硫酸钾和蒽醌-β-磺酸钠反应,并且在氧和链转移剂存在下,当聚合开始时存在30至90%的引发剂,其余部分在 在引发剂组合的情况下,只有进一步的连二亚硫酸钠以60%的转化率加入,并且当在聚合开始之前或在聚合开始时存在20至80重量%的链转移剂的总量 在单体转化时,一个或多个部分加入量 大于20%。

    Radiant unit in the form of a portal, particularly for use as a drying
and baking tunnel for the automobile industry
    4.
    发明授权
    Radiant unit in the form of a portal, particularly for use as a drying and baking tunnel for the automobile industry 失效
    以门户形式的辐射单元,特别用作汽车工业的烘干和烘烤隧道

    公开(公告)号:US4662086A

    公开(公告)日:1987-05-05

    申请号:US798987

    申请日:1985-11-18

    IPC分类号: F26B3/28 H05B3/00 F26B23/04

    摘要: Disclosed is a self-contained radiant unit in the form of a portal for use particularly as a drying and baking tunnel for the automobile industry which is equipped with a plurality of infrared lamps on its inner surfaces. Air inlet openings are provided in the roof and/or side walls of the portal, at least over the region midway along with their horizontal extension, for the turbulence-free removal of the vapors emanating from the surface of the object being treated as well as of suspended particles present in the drying and baking zone.

    摘要翻译: 本发明公开了一种独特的辐射单元,其形式为门式,特别用作汽车工业的烘干和烘烤隧道,在其内表面上装有多个红外灯。 空气入口开口设置在入口的屋顶和/或侧壁中,至少在其水平延伸部分的中间区域的中部区域,以便从被处理物体的表面发出的蒸汽的无湍流去除以及 存在于干燥和烘烤区中的悬浮颗粒。

    Method and device for erecting building structures such as bridges,
using pre-fabricated concrete beams
    6.
    发明授权
    Method and device for erecting building structures such as bridges, using pre-fabricated concrete beams 失效
    使用预制混凝土梁架设建筑结构如桥梁的方法和装置

    公开(公告)号:US4630798A

    公开(公告)日:1986-12-23

    申请号:US667123

    申请日:1984-11-01

    申请人: Eberhard Muller

    发明人: Eberhard Muller

    IPC分类号: E01D21/00 E01D21/06 E01D21/02

    摘要: Proposed is a method for the erection of structures, such as bridges, that display pre-fabricated concrete beams, according to which the individual pre-fabricated beams are produced, on the spot, on a feed rigging within the corresponding work area of the structure, in a heated and laterally tiltable form. After removal from the form, the thusly produced pre-fabricated beams are transferred sidewardly into their final position by means of gantry cranes. During concretizing of the individual pre-fabricated beams, flexure of the feed rigging carrying the form is equalized in continuous fashion, in correspondence with the progressing, concretizing process, by transfer pumping of ballast liquid. Correspondingly with progression of construction, the feed rigging displaying a freely suspended cantilever is transferred in progressive fashion onto support girders of the structure that have been prepared beforehand, just like the gantry cranes, which can be pretransported from the support girders supporting it to the next support girders. Also capable of being equalized are different inclinations of the support girders, such as curvatures in the ground plane of the structure, for example the access to bridges.

    摘要翻译: 提出了一种用于架设诸如桥梁的结构的方法,其显示预制混凝土梁,根据该方法,单个预制梁现场在结构的相应工作区域内的进给索具上产生 ,以加热和横向可倾斜的形式。 在从形式移除之后,由此产生的预制梁通过龙门起重机侧向转移到其最终位置。 在单独的预制梁的混凝土中,通过传送泵送压载液体,以连续的方式使输送索具的挠曲与进行的具体化过程相对应。 与施工进度相对应,显示自由悬臂悬臂的进料索具逐渐转移到预先准备的结构的支撑梁上,就像龙门式起重机一样,可以从支撑其的支撑梁预先传送到下一台 支撑梁。 还能够均衡的是支撑梁的不同倾斜度,例如结构的接地平面中的曲率,例如对桥梁的通路。

    Process for the production of toluene-soluble, sulphur-modified
chloroprene polymers
    8.
    发明授权
    Process for the production of toluene-soluble, sulphur-modified chloroprene polymers 失效
    用于生产甲苯可溶性,硫改性氯丁二烯聚合物的方法

    公开(公告)号:US4920189A

    公开(公告)日:1990-04-24

    申请号:US89934

    申请日:1987-08-25

    CPC分类号: C08F36/18

    摘要: Toluene-soluble, sulphur-modified polychloroprene is obtained by emulsion copolymerization of chloroprene, sulphur and optionally further monomers which are copolymerizable with chloroprene and sulphur using a peroxy activator and subsequent working-up by stabilizing, stopping, degassing and isolating without separate peptization, in that polymerization is carried out in the presence of dithiocarbamates and/or xanthogenates and the activator is metered in continuously or batch-wise during the course of polymerization.

    摘要翻译: 甲苯可溶的硫改性聚氯丁二烯是通过氯丁二烯,硫和任选的其它可与氯丁二烯和硫共聚的其它单体通过使用过氧化物活化剂进行乳液共聚获得的,随后通过稳定,停止,脱气和分离而不分开胶溶, 在二硫代氨基甲酸盐和/或黄原酸盐的存在下进行聚合,并且在聚合过程中连续或间歇地计量活化剂。

    Process for the production of vulcanizable mercaptan-and/or xanthogen
disulfide-regulated polychloroprene rubbers with minimal mold fouling
    9.
    发明授权
    Process for the production of vulcanizable mercaptan-and/or xanthogen disulfide-regulated polychloroprene rubbers with minimal mold fouling 失效
    生产可硫化硫醇和/或黄原二硫键调节聚氯丁二烯橡胶的方法,具有最小的模具污染

    公开(公告)号:US5298580A

    公开(公告)日:1994-03-29

    申请号:US946655

    申请日:1992-09-18

    CPC分类号: C08F36/18

    摘要: Vulcanizable, mercaptan- and/or xanthogen-disulfide-regulated polychloroprene rubber are produced by emulsion polymerization of chloroprene and, based on polymerizable monomer used, 0 to 30 parts by weight ethylenically unsaturated, other monomers copolymerizable with chloroprene in an alkaline medium by a process in which(1) 0.1 to 10 parts by weight of a tricyclic diterpene carboxylic acid containing at least two conjugated C.dbd.C double bonds per molecule, based on the polymerizable monomer used, and optionally(2) 0.1 to 5 parts by weight, based on polymerizable monomer used, fatty acid estersare used for their production.The polychloroprene produced in accordance with the invention may be used for the production of vulcanized rubber articles. The polychloroprene rubbers produced by the process according to the invention have a minimal tendency to foul metal molds. The pollution of wastewaters by the process according to the invention is minimal. The well-known favorable properties of polychloroprene remain unaffected.

    摘要翻译: 通过氯丁二烯的乳液聚合制备可硫化,硫醇和/或黄原二硫化物调节的聚氯丁二烯橡胶,并且基于所使用的可聚合单体,0至30重量份烯键式不饱和,可通过工艺在碱性介质中与氯丁二烯共聚的其它单体 其中(1)基于所使用的可聚合单体,每分子含有至少两个共轭C = C双键的三环二萜羧酸0.1至10重量份,和任选地(2)0.1至5重量份的基于 在使用的可聚合单体上,使用脂肪酸酯来制造。 根据本发明生产的聚氯丁二烯可用于硫化橡胶制品的生产。 通过根据本发明的方法生产的聚氯丁二烯橡胶具有污染金属模具的最小趋势。 通过根据本发明的方法对废水的污染是最小的。 聚氯丁二烯的众所周知的有利特性保持不变。