公开(公告)号：WO1995024252A1

公开(公告)日：1995-09-14

申请号：PCT/US1995000420

申请日：1995-01-12

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  CUMMINGS, Clark, J. ,  MEISTER, Bernard, J.

IPC: B01D03/06

CPC classification number: F28D9/0062 ,  B01D1/221 ,  B01D3/06 ,  C08F6/00 ,  F28D7/0041 ,  F28D9/0018 ,  F28F3/086 ,  F28F13/08 ,  Y10S159/10

Abstract: An improved polymer devolatilization apparatus comprising a flat plate heater (22) comprising a polymer solution supply means (20), and a liquid/vapor collection and separation means, said flat plate heater further comprising a multiplicity of flat plates defining a plurality of channels (10), each channel having a substantially uniform height, but varying width over the total channel length, each channel comprising three zones: a first zone (12), having a beginning (18) and a terminus, said beginning in operative communication with the polymer solution supply means, characterized by decreasing width as a function of distance from its beginning, a second zone (14) having a beginning at the terminus of the first zone and a terminus, characterized by at least one occurrence of a restrictive cross-sectional area, and a third zone (16) having a beginning at the terminus of the second zone and terminating at a liquid/vapor collection and separation region operating at reduced pressure, said third zone characterized by increasing width as a function of distance from its beginning, and provided further that the ratio of maximum width of the third zone to the maximum width of the second zone is from 2:1 to 20:1.

Abstract translation: 一种改进的聚合物脱挥发装置，包括包括聚合物溶液供应装置（20）的平板加热器（22）和液体/蒸汽收集和分离装置，所述平板加热器还包括限定多个通道的多个平板 每个通道具有基本均匀的高度，但在总通道长度上具有变化的宽度，每个通道包括三个区域：具有开始（18）和末端的第一区域（12），所述第一区域（12）开始与 聚合物溶液供应装置，其特征在于将宽度从其开始减小为距离的函数;第二区域（14），其具有在第一区域的末端的起始点和末端，其特征在于至少一次出现限制性横截面 区域和第三区域（16），其具有在第二区域的末端处的开始并且终止于在减压下操作的液体/蒸气收集和分离区域，所述第二区域 第三区域的特征在于宽度随着距离开始的距离而增加，并且进一步提供了第三区域的最大宽度与第二区域的最大宽度的比率为2:1至20:1。

公开(公告)号：WO1991002008A1

公开(公告)日：1991-02-21

申请号：PCT/US1989003309

申请日：1989-08-01

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  MEISTER, Bernard, J. ,  TIEN, Li, C. ,  DRYZGA, Craig, D.

IPC: C08F02/46

CPC classification number: C08F279/04 ,  C08F279/02 ,  C08F212/06

Abstract: Hydroperoxidized rubber-containing polymers are prepared in a process wherein a rigid phase polymer is prepared by polymerization of one or more free radically polymerizable monomers in the presence of a hydroperoxidized rubbery intermediate in a well stirred back-mixed reactor operating under essentially homogeneous conditions at a solids content of from 30 to 75 percent by weight, and an initial rubber content in the feed of from 5 to 12 percent by weight.