Methods of Making Polyethylene Polymer Comprising Polar Comonomer and Polymer Compositions
    2.
    发明申请
    Methods of Making Polyethylene Polymer Comprising Polar Comonomer and Polymer Compositions 有权
    制备包含极性共聚单体和聚合物组合物的聚乙烯聚合物的方法

    公开(公告)号:US20150011717A1

    公开(公告)日:2015-01-08

    申请号:US14380158

    申请日:2013-03-01

    IPC分类号: C08F20/40 C08F20/10 C08F2/01

    摘要: A continuous process for producing high pressure polyethylene is described. The process includes contacting first amounts of ethylene, an optional polar comonomer, and a first C2 to C12 modifier in the presence of a first amount of initiator in a reaction system under polymerization conditions to form a reaction system effluent comprising a first polyethylene resin having a first concentration of unreacted monomer therein; and directing an ethylene stream and the reaction system effluent to a pressure separation unit operated at separation conditions thereby removing at least a portion of the unreacted monomer from the reaction system effluent.

    摘要翻译: 描述了生产高压聚乙烯的连续方法。 该方法包括在聚合条件下在反应体系中在第一量引发剂存在下将第一量乙烯,任选的极性共聚单体和第一C2至C12改性剂接触以形成反应体系流出物,其包含第一聚乙烯树脂,其具有 其中未反应单体的第一浓度; 并将乙烯流和反应系统流出物引导到在分离条件下操作的压力分离单元,从而从反应体系流出物中除去至少一部分未反应的单体。

    Ethylene copolymers
    4.
    发明授权
    Ethylene copolymers 失效
    乙烯共聚物

    公开(公告)号:US4772673A

    公开(公告)日:1988-09-20

    申请号:US38544

    申请日:1987-04-15

    摘要: Waxy highly branched copolymers having a molecular weight of 500 to 20,000 comprised of at least 60% by weight of ethylene, 1 to 39% by weight of an alkene carboxylic acid ester and/or a vinyl ester and 1-30% by weight of a vinyl ketone produced by polymerization at 100 to 350.degree. C. and a pressure of about 1,000 to 8,000 bar in the presence of a radical forming initiator and in the absence of a solvent useful as oil additives to improve flow characteristics of crude oils and middle distillates derived from crude oil.

    摘要翻译: 分子量为500至20,000的蜡状高度支化的共聚物由至少60重量%的乙烯,1至39重量%的烯烃羧酸酯和/或乙烯基酯和1-30重量%的 在自由基形成引发剂的存在下,在不存在可用作油添加剂的溶剂的情况下,在100至350℃下聚合产生约1,000至8,000巴的压力产生的乙烯基酮,以改善原油和中间馏分的流动特性 源于原油。

    Unsaturated ester-amides of halogenated alkenes
    10.
    发明授权
    Unsaturated ester-amides of halogenated alkenes 失效
    卤代烯烃的不饱和酯 - 酰胺

    公开(公告)号:US3950392A

    公开(公告)日:1976-04-13

    申请号:US432851

    申请日:1974-01-14

    摘要: This invention deals with new unsaturated ester-amides of .alpha.,.beta.-unsaturated polycarboxylic acids derived from halogenated alcohols of the formula ##EQU1## wherein R is a divalent hydrocarbon moiety having at least one and no more than 10 carbon atoms, X is a member selected from the class of bromine and chlorine, and R' is a member selected from the class of hydrogen and a monovalent hydrocarbon containing at least one and no more than 20 carbon atoms. Typical ester-amides are the maleates, fumarates, itaconates and citraconates. These monomers possess fire-retardant properties and are useful for the synthesis of polymers and copolymers.

    摘要翻译: 本发明涉及由式XX | HO-RC = CR'的卤代醇衍生的α,β-不饱和多元羧酸的新不饱和酯 - 酰胺,其中R是具有至少一个且不超过10个碳的二价烃部分 原子,X是选自溴和氯类的成员,R'是选自氢和含有至少一个且不超过20个碳原子的一价烃的成员。 典型的酯酰胺是马来酸盐,富马酸盐,衣康酸酯和柠康酸盐。 这些单体具有阻燃性能,可用于合成聚合物和共聚物。