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    Process and apparatus to determine the degree of separation of two solution streams
    4.
    发明授权
    Process and apparatus to determine the degree of separation of two solution streams 有权

    公开(公告)号：US11002653B2

    公开(公告)日：2021-05-11

    申请号：US16447605

    申请日：2019-06-20

    申请人： Dow Global Technologies LLC

    发明人： Alec Y. Wang ,  Curvel Hypolite ,  Jorge Rubalcaba ,  Michael J. Zogg, Jr. ,  Job D. Guzman

    IPC分类号： G01N9/32 ,  C08F6/00 ,  C08F6/12

    摘要： The invention provides a method, and apparatus, for determining the degree of separation (DOS) of a polymer solution into a polymer-rich stream and a solvent-rich stream, said method comprising the following: adding to a liquid-liquid separation vessel the polymer solution, which comprises a polymer, a solvent and an anti-solvent; separating the polymer solution into a polymer-rich stream and a solvent-rich stream; removing at least some the polymer-rich stream from at least one outlet P on the vessel, and measuring the actual solution density of this polymer-rich stream using at least one flow meter; removing at least some of the solvent-rich stream from at least one other outlet S on the vessel, and measuring the actual density of the solvent-rich stream using at least one flow meter; and wherein the degree of separation (DOS) is determined by the following equation (Eqn. 1): DOS=[actual solution density (polymer-rich steam)−actual solution density (solvent-rich stream)]/[theoretical solution density (polymer-rich stream)−theoretical solution density (solvent-rich stream)]  (Eqn. 1).

    Ultrafiltration of polyisoolefin copolymers and polyisoolefin copolymers with reduced oligomer content
    7.
    发明授权
    Ultrafiltration of polyisoolefin copolymers and polyisoolefin copolymers with reduced oligomer content 有权

    公开(公告)号：US10766974B2

    公开(公告)日：2020-09-08

    申请号：US15535857

    申请日：2015-07-07

    申请人： ARLANXEO Singapore Pte. Ltd.

    发明人： Conrad Siegers

    IPC分类号： C08F6/10 ,  C08F210/12 ,  C08F6/12 ,  B01D61/14 ,  C08J3/24

    摘要： A method of separating a polyisoolefin elastomer from non-polymeric components in an organic solvent involves ultrafiltration of a solution of the polyisoolefin elastomer and non-polymeric components in an organic solvent through a semipermeable membrane to substantially retain the polyisoolefin elastomer in a retentate and provide the non-polymeric components in a permeate. Advantageously, stabilizers for the polyisoolefin elastomer are retained in the retentate along with the polyisoolefin elastomer, permeate flux through the membrane is higher as concentration of the polyisoolefin elastomer in the solution increases up to a concentration limit, the separated polyisoolefin elastomer in the retentate has a molecular weight that can be substantially unchanged even when ultrafiltration is conducted at elevated temperature and the amount of polyisoolefin elastomer in the permeate is unmeasurable providing an oligomer-rich permeate uncontaminated by polyisoolefin elastomer. A process for curing a polyisoolefin copolymer involves reducing content of an oligomer to 900 ppm or less in a mixture of the oligomer and the polyisoolefin copolymer to produce an oligomer-depleted mixture, and adding a resin cure system to the oligomer-depleted mixture to cure the polyisoolefin copolymer.

    In-line blending process
    8.
    发明授权
    In-line blending process 有权

    公开(公告)号：US10597472B2

    公开(公告)日：2020-03-24

    申请号：US15776095

    申请日：2016-12-21

    申请人： Borealis AG

    发明人： Henry Sleijster ,  Mohammad Al-Haj Ali ,  Jukka Rasanen ,  Samuli Zitting ,  Michiel Bergstra ,  Erik Eriksson ,  Christof Wurnitsch ,  Guhan Mathivanan ,  Sameer Vijay ,  Vasileios Kanellopoulos ,  Jani Aho ,  Jouni Takakarhu

    IPC分类号： C08J11/02 ,  C08F6/10 ,  C08F210/14 ,  C08F6/00 ,  C08F2/06 ,  C08F6/12 ,  C08F10/00 ,  C08F210/02 ,  B01D1/14 ,  B01D1/00

    摘要： An in-line blending process for polymers comprising: (a) providing two or more reactor-low pressure separator units (1,7) in parallel configuration, each reactor-low pressure separator unit comprising one reactor (2,8) fluidly connected to one low pressure separator (3,9) downstream and further a recycling line (5,11) connecting the low pressure separator (3,9) back to the corresponding reactor (2,8); (b) polymerizing olefin monomers having two or more carbon atoms in each of the reactors (2,8) in solution polymerisation; (c) forming an unreduced reactor effluents stream including a homogenous fluid phase polymer-monomer-solvent mixture in each of the reactors (2,8), (d) passing the unreduced reactor effluents streams from each of the reactors (2,8) through the corresponding low pressure separators (3,9), whereby the temperature and pressure of the low pressure separators (3,9) is adjusted such that a liquid phase and a vapour phase are obtained, whereby yielding a polymer-enriched liquid phase and a polymer-lean vapour phase, and (e) separating the polymer-lean vapour phase from the polymer-enriched liquid phase in each of the low-pressure separators (3,9) to form separated polymer-lean vapour streams and separated polymer-enriched liquid streams; (f) combining the polymer-enriched liquid streams from step (e) in a further low-pressure separator and/or a mixer (13) to produce a combined polymer-enriched liquid stream (16); (g) reintroducing the polymer-lean vapour streams from step (e) via recycling lines (5,11) into the corresponding reactors (2,8).

    PRODUCTION METHOD AND PRODUCTION DEVICE FOR POLYMER
    10.
    发明申请
    PRODUCTION METHOD AND PRODUCTION DEVICE FOR POLYMER 审中-公开

    公开(公告)号：US20190389981A1

    公开(公告)日：2019-12-26

    申请号：US16480815

    申请日：2018-01-19

    申请人： ZEON CORPORATION

    发明人： Masanobu KANAUCHI ,  Ryuichi ONO

    IPC分类号： C08F2/01 ,  C08F36/06 ,  C08F6/12 ,  C08F6/10 ,  C08F2/06

    摘要： A production method for a polymer comprises: a step (A) of polymerizing a raw material monomer to obtain a polymer-containing liquid containing a polymer; a step (B) of separating a collection target component-containing fluid containing a collection target component composed of at least one of a solvent and a residual monomer, from the polymer-containing liquid; a step (C) of supplying the collection target component-containing fluid to a three-product distillation column, and separating a fraction containing an impurity higher in boiling point than the collection target component and a fraction containing an impurity lower in boiling point than the collection target component, to obtain a fraction containing the collection target component of high purity; and a step (D) of performing polymerization using the fraction containing the collection target component of high purity.