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11 条记录 (耗时 0.017 秒)

    Preparation of aqueous synthetic wax dispersions
    3.
    发明授权
    Preparation of aqueous synthetic wax dispersions 失效
    水性合成蜡分散体的制备

    公开(公告)号：US4996259A

    公开(公告)日：1991-02-26

    申请号：US397879

    申请日：1989-08-23

    申请人： Gernot Koehler ,  Juergen Schmidt-Thuemmes ,  Norbert Hasenbein ,  Lothar Schlemmer ,  Wolfram Dietsche

    发明人： Gernot Koehler ,  Juergen Schmidt-Thuemmes ,  Norbert Hasenbein ,  Lothar Schlemmer ,  Wolfram Dietsche

    IPC分类号： C08F8/44

    CPC分类号： C08F8/44

    摘要： Aqueous synthetic wax dispersions which contain, as an essential component of the solid substance, a partially or completely neutralized copolymer of a C.sub.2 -C.sub.4 -olefin and an unsaturated mono- or dicarboxylic acid or dicarboxylic anhydride are prepared by neutralizing and dispersing the solid substance in an aqueous medium at above the melting point of the copolymer, by a method in which the processes of neutralization and of dispersion are carried out in one extruder or in a plurality of extruders connected in series.

    摘要翻译： 含有作为固体物质的必需成分的C2-C4-烯烃和不饱和单羧酸或二羧酸酐的部分或完全中和的共聚物的水性合成蜡分散体是通过将固体物质中和和分散在 通过在一个挤出机或串联连接的多个挤出机中进行中和和分散过程的方法，在共聚物熔点以上的水性介质。

    Copolymer of (a) ethylene and (b) and alkenoic acid or a derivative thereof a mixture of said monomers
    6.
    发明授权
    Copolymer of (a) ethylene and (b) and alkenoic acid or a derivative thereof a mixture of said monomers 失效
    （a）乙烯和（b）烯酸或其衍生物或所述单体的混合物的共聚物

    公开(公告)号：US06245864B1

    公开(公告)日：2001-06-12

    申请号：US08213832

    申请日：1994-03-16

    申请人： Norbert Hasenbein ,  Thomas Muehlenbernd ,  Gernot Koehler

    发明人： Norbert Hasenbein ,  Thomas Muehlenbernd ,  Gernot Koehler

    IPC分类号： C08F202

    CPC分类号： C08F210/02 ,  C08F2/001

    摘要： A copolymer of (a) from 96 to 99.6% molar of ethylene and (b) from 0.4 to 4% molar of a C3-C6-alkenoic acid or an ester thereof having not more than 14 carbon atoms or a mixture of these monomers, which copolymer may be prepared by polymerization in a continuously operated tubular reactor under a pressure of from 500 to 5,000 bar and at elevated temperature in the presence of free-radical initiators by feeding a mixture of the said reactants to the inlet port of the reactor only, restricting the temperature in a first reaction zone to approximately 240° C. and, after the temperature has dropped by from 5°to 20° C., metering further initiator to the beginning of a second reaction zone and completing the reaction at a temperature of up to 300° C.

    摘要翻译： （a）96至99.6摩尔的乙烯和（b）0.4至4摩尔的具有不超过14个碳原子的C 3 -C 6 - 链烯酸或其酯或这些单体的混合物的共聚物， 该共聚物可以在连续操作的管式反应器中在500-5,000巴的压力下和在自由基引发剂的存在下在升高的温度下通过将所述反应物的混合物仅供入反应器的入口端进行聚合来制备 将第一反应区中的温度限制在约240℃，并且在温度从5℃降至20℃之后，将另外的引发剂计量到第二反应区的开始并在温度下完成反应 高达300°C

    Preparation of polyethylene and copolymers of predominant amounts of ethylene
    9.
    发明授权
    Preparation of polyethylene and copolymers of predominant amounts of ethylene 失效
    乙烯的预聚物的聚乙烯和共聚物的制备

    公开(公告)号：US5100978A

    公开(公告)日：1992-03-31

    申请号：US508183

    申请日：1990-04-12

    申请人： Norbert Hasenbein ,  Wolfgang Ball ,  Juergen Schmidt-Theummes ,  Gernot Koehler

    发明人： Norbert Hasenbein ,  Wolfgang Ball ,  Juergen Schmidt-Theummes ,  Gernot Koehler

    IPC分类号： C08F2/00 ,  C08F2/34 ,  C08F10/02 ,  C08F210/00 ,  C08F210/02 ,  E21F1/04 ,  F16L11/02

    CPC分类号： C08F10/02

    摘要： Polyethylene and copolymers of predominant amounts of ethylene and minor amounts of comonomers which are polymerizable with ethylene are obtainable by free radical polymerization of the monomers under from 1,500 to 5,000 bar and at from 40.degree. to 250.degree. C. by means of an initiator with virtually complete exclusion of oxygen in not less than n=3 polymerization stages, by a method in which, in the first stage, the total amount of the predominant part of the monomers are subjected to polymerization using some of the initiator required, until said polymerization comes virtually to a stop, thereafter a further part of the initiator and, if required, of the monomers are added to the mixture, which has been cooled by 20.degree.-60.degree. C., and this process is repeated in the subsequent stages until the n th stage, with the proviso that the initiators used in the (n-1) th stage have a half-life temperature of from 80.degree. to 160.degree. C.

    摘要翻译： 聚乙烯和主要量的乙烯和少量可与乙烯聚合的共聚单体的共聚物可以通过单体在1500-5,000巴和40-250℃下自由基聚合，通过引发剂实际上可以获得 在不少于n = 3个聚合阶段中完全排除氧，通过一种方法，在第一阶段中，使用一些所需的引发剂对主要部分单体的总量进行聚合，直至所述聚合物到达 实际上停止，然后将另外一部分引发剂和如果需要的话将单体加入到已经冷却了20-60℃的混合物中，并且该过程在随后的阶段重复，直到 第n阶段，条件是第（n-1）阶段中使用的引发剂的半衰期温度为80℃至160℃。