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    Phase separation processes
    2.
    发明公开
    Phase separation processes 失效
    相分离方法

    公开(公告)号：EP0149342A3

    公开(公告)日：1986-09-10

    申请号：EP84308836

    申请日：1984-12-17

    申请人： EXXON RESEARCH AND ENGINEERING COMPANY

    发明人： Guckes, Terry Louis ,  McHugh, Mark Anthony ,  Hazelton, Ronald Lewis ,  Cozewith, Charles

    IPC分类号： C08F06/12 ,  C08F06/00

    CPC分类号： C08F6/12 ,  Y02P20/544

    摘要： A separation process has been found in which a polymer-solvent solution separates into phases of highly different composition which are in equilibrium over a broad temperature range. Upon addition of the phase separating agent, which is near or above its supercritical conditions, rapid disengagement into two phases occurs. The relative volume of solvent rich phase is substantially larger than the polymer rich phase. The process can be practiced at relatively low temperatures such as those employed in polymerization or post-polymerization processes. The separation is accomplished by adding or elevating the concentration of a phase separation agent to or above a minimum effective concentration, which causes the UCST and LCST lines to merge. Suitable phase separating agents are organic and inorganic compounds that are gases at 1 atm pressure and 25°C. Due to the gaseous nature of the phase separating agent, it is easily removed from the solvent phase for reuse in the process.

    Method for high temperature phase separation of solution containing polymers
    3.
    发明公开
    Method for high temperature phase separation of solution containing polymers 失效
    高分子聚合物溶液分离方法

    公开(公告)号：EP0184935A3

    公开(公告)日：1986-09-24

    申请号：EP85308977

    申请日：1985-12-10

    申请人： EXXON RESEARCH AND ENGINEERING COMPANY

    发明人： Cozewith, Charles ,  Hazelton, Ronald Lewis

    IPC分类号： C08F06/12

    CPC分类号： C08F6/12

    摘要： @ A process is disclosed for recovering polymer from a solution of the polymer in a solvent by high temperature phase separation in which carbon dioxide is added to the solution, the solution and the added hydrocarbon are subjected to a temperature and pressure so that one liquid phase is formed and the pressure is adjusted to form two phases, namely, a polymer-lean liquid phase and a polymer-rich liquid phase. The polymer-rich liquid phase is separated from the polymer-lean liquid phase, and the polymer is then recovered from the polymer-rich liquid phase.

    Recovery of polymer from polymer slurry
    4.
    发明公开
    Recovery of polymer from polymer slurry 失效
    聚合物从聚合物浆料中回收

    公开(公告)号：EP0141622A3

    公开(公告)日：1986-09-17

    申请号：EP84307335

    申请日：1984-10-25

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Matsuyama, Kiyoshi ,  Suzuki, Takatoshi ,  Chigusa, Takeshi

    IPC分类号： C08F06/12

    CPC分类号： C08F6/12 ,  B01D37/00 ,  B01D37/02

    摘要： A polymer slurry formed by polymerizing ethylene or propylene optionally with other olefinic monomer copolymerizable therewith in a hydrocarbon solvent such as propylene, propane or butane, is continuously or intermittently supplied to filter having a filtering surface on which a small quantity of polymer particles is retained. Most of the hydrocarbon solvent is recovered by passing it through the filter, and the remaining polymer particles are overflown from the filter for recovery as wet cake. By the use of such a filter, the quantity of the solvent to be vaporized can be greatly reduced.

    Process for recovering rubberlike polymer from solution thereof
    6.
    发明公开
    Process for recovering rubberlike polymer from solution thereof 失效
    从其溶液中回收橡胶聚合物的方法

    公开(公告)号：EP0044511A3

    公开(公告)日：1982-07-21

    申请号：EP81105527

    申请日：1981-07-14

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Harada, Hiroyuki ,  Takao, Hiroyoshi ,  Yamamoto, Keisaku ,  Umezu, Takesi

    IPC分类号： C08F06/12

    CPC分类号： C08F6/12

    摘要： In a process for recovering a rubberlike copolymer from a hydrocarbon or halogenated hydrocarbon solution containing the copolymer, the solution being obtained by copolymerizing ethylene and an a-olefin represented by the general formula CH 2 = CHR, wherein R is a linear or a branched alkyl group of 1 to 6 carbon atoms, or by copolymerizing these and a non-conjugated linear or cyclic diene, in the presence of a catalyst containing an organoaluminum compound and a vanadium compound, the improvement which compriese dispersing the rubber like copolymer solution in hot water in the presence of a block type polyether compound represented by the general formula HO(C 2 H 4 O) a (C 3 H 6 O) b (C 2 H 4 O) c H, wherein a, b and c independently represent numbers of 10 to 1000, to strip the solution and separating the resulting granular copolymer from water to recover it in a granular form.

    摘要翻译： 在从含有该共聚物的烃类或卤代烃溶液中回收橡胶状共聚物的方法中，所述溶液是通过使乙烯和由通式CH 2 = CHR表示的α-烯烃共聚获得的，其中R是直链或支链烷基 或者通过使它们与非共轭线型或环状二烯的共聚合，含有有机铝化合物和钒化合物的催化剂的存在，在橡胶状共聚物溶液的存在下，将橡胶状共聚物溶液分散在热水中 的由通式HO（C 2 H 4 O）a（C 3 H 6 O）b（C 2 H 4 O）c H表示的嵌段型聚醚化合物，其中a，b和c独立地表示数为10至1000，以剥离溶液并将所得颗粒状共聚物从 水以粒状回收。