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    • 1. 发明公开
    • METHOD FOR MANUFACTURING FLUORINE-CONTAINING POLYMER PARTICLES
    • EP3239215A4
    • 2018-07-25
    • EP15872947
    • 2015-12-18
    • ASAHI GLASS CO LTD
    • SAITO SUSUMUHASHIMOTO WAKAKOSHIMOHIRA TETSUJIHAMAZAKI KAZUOOTSUGU SATOSHIMATOBA HIROKI
    • C08J3/16C08F6/12
    • C08F6/12C08F2/06C08F6/003C08J3/16C08L27/12
    • To provide a method capable of producing fluorinated polymer particles in which formation of fine particles or formation of large aggregates is sufficiently suppressed even in the case of a fluorinated polymer having high solubility in a solvent. The method comprises the following steps (i) and (ii), being a method for producing particles of a fluorinated polymer (A) which has either one or both of structural units (u1) derived from tetrafluoroethylene and structural units (u2) having no sulfonic acid type functional group and having a cyclic structure and fluorine atoms, and which has structural units (u3) having a sulfonic acid type functional group, wherein the proportion of the structural units (u1) is from 0 to 82 mol% in all structural units (100 mol%) in the fluorinated polymer (A): (i) a step of preparing solution or dispersion of the fluorinated polymer (A) having the above fluorinated polymer (A) dissolved or dispersed in a solvent (B), wherein the following conditions (i-1) and (i-2) are satisfied: (i-1) the solvent (B) contains a good solvent (B2) wherein the solubility of the fluorinated polymer (A) is at least 30%, (i-2) even when the above solution or dispersion of the fluorinated polymer (A) is passed through a filter of 200 mesh made of stainless steel, no residue remains on the filter, (ii) a step of mixing the above solution or dispersion of the fluorinated polymer (A) and a solvent (C) to aggregate the fluorinated polymer (A) to form particles of the fluorinated polymer (A), wherein the following conditions (ii-1) to (ii-3) are satisfied: (ii-1) the solvent (C) contains a poor solvent (C1) whereby the degree of swelling of the fluorinated polymer (A) is at most 100%, (ii-2) the degree of swelling of the fluorinated polymer (A) by a mixed solvent (BC) of the solvent (B) and the solvent (C) is from 70 to 250%, (ii-3) the ratio of the mass (Wc) of the solvent (C) to the mass (W B ) of the solvent (B) is from 1 to 5.
    • 4. 发明公开
    • PROCESS FOR SEPARATING COMPONENTS OF A REACTION MIXTURE OBTAINED BY HIGH-PRESSURE POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS
    • PROCESS FOR通过烯属不饱和单体的高压聚合的反应混合物的组分的分离
    • EP3077423A1
    • 2016-10-12
    • EP14809799.1
    • 2014-12-03
    • Basell Polyolefine GmbH
    • GROOS, GeorgNEUMANN, ErichDEUERLING,MichaelLITTMANN, Dieter
    • C08F6/10C08F6/12C08J11/02C08F10/00C08F6/00
    • C08F6/12C08F2/01C08F2/02C08F2/34C08F6/001C08F6/10C08J11/02Y02P20/582C08L23/04C08F10/02C08F2/00C08F110/02C08F210/16C08F2500/08
    • Process for separating polymeric and gaseous components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, the process comprising the steps of entering the reaction mixture into a separation vessel; separating the reaction mixture into in a gaseous fraction and a liquid fraction; and withdrawing the gaseous fraction from the top of the separation vessel and withdrawing the liquid fraction from the bottom of the separation vessel, wherein the separation is carried out at a pressure of from 15 MPa to 50 MPa and a temperature of from 120°C to 300°C; the separation vessel has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 4 to 10 and is equipped with an inlet pipe for introducing the reaction mixture into the separation vessel; the inlet pipe extends vertically from the top into the separation vessel; and the ratio of the inner diameter of the inlet pipe at its lower end and the inner diameter of the separating vessel in its cylindrical part is in the range of from 0.2 to 0.4 and process for preparing ethylene homopolymers or copolymers from ethylenically unsaturated monomers in the presence of free-radical polymerization initiators at temperatures from 100°C to 350°C and pressures in the range of from 110 MPa to 500 MPa in a polymerization reactor comprising a such process for separating polymeric and gaseous components.
    • 本公开涉及一种用于在一个气体馏分和液体馏分通过在自由基聚合引发剂的存在下烯属不饱和单体的高压聚合得到的反应混合物的聚合和气态组分分离成,worin分离是 在15兆帕至50兆帕的压力和120℃至300℃的在分离容器具有带有长度与直径L的比率的垂直布置的圆筒状的温度下进行从4的出/ D 至10和所有其配备有在从顶到分离容器垂直地延伸进水管; 和在其下端的入口管和分离容器在其筒状部的内径的内径的比率是在0.2至0.4的范围内。