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    POLYMERIZATIION OF ETHYLENIC CHLORIDE WITH INORGANIC SALT
    82.
    发明申请
    POLYMERIZATIION OF ETHYLENIC CHLORIDE WITH INORGANIC SALT 审中-公开
    乙烯氯化物与无机盐的聚合

    公开(公告)号：WO1996001853A1

    公开(公告)日：1996-01-25

    申请号：PCT/US1994007624

    申请日：1994-07-08

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  KLING, Susan, M. ,  SARKAR, Nitis

    IPC: C08F04/12

    CPC classification number: C08F14/08 ,  C08F6/003 ,  C08F14/06 ,  C08L27/06 ,  C08F2/18

    Abstract: A process for preparing a polymer or copolymer from polymerizable monomers by suspension polymerization whereby foam formation during the removal of residual monomers is inhibited, which process comprises adding at least one salt of an inorganic acid having an anionic valency of at least 2 to the polymer slurry prior to the removal of the residual monomer.

    Abstract translation: 一种由可聚合单体通过悬浮聚合制备聚合物或共聚物的方法，由此抑制在除去残留单体期间的泡沫形成，该方法包括向聚合物浆料中加入至少一种具有至少2个阴离子价数的无机酸的盐 在除去残留单体之前。

    PROCESS FOR THE PREPARATION OF ARYL HALOFORMATES AND DIARYL CARBONATES
    84.
    发明申请
    PROCESS FOR THE PREPARATION OF ARYL HALOFORMATES AND DIARYL CARBONATES 审中-公开
    制备亚硫酸氢钠和二氧化碳的方法

    公开(公告)号：WO1995025083A1

    公开(公告)日：1995-09-21

    申请号：PCT/US1995002911

    申请日：1995-03-08

    Applicant: THE DOW CHEMICAL COMPANY ,  GALVAN, Rafael ,  MULLINS, Michael, J.

    Inventor： THE DOW CHEMICAL COMPANY

    IPC: C07C68/02

    CPC classification number: C07C68/02 ,  C07C69/96

    Abstract: A process of preparing diaryl carbonates, such as diphenyl carbonate, and aryl haloformates, such as phenyl chloroformate. The process involves contacting phenol or a substituted phenol with a carbonyl halide, such as phosgene, in the presence of a phosphorus- containing catalyst. The catalyst is selected from alkyl phosphates, aryl phosphites, aryl phosphates, organic phosphinites and phophinates, organic pyrophosphates, inorganic phosphorous and phosphoric acids, and phosphorus oxides.

    Abstract translation: 制备碳酸二芳酯如碳酸二苯酯和卤代甲酸芳基酯如氯甲酸苯酯的方法。 该方法包括在含磷催化剂存在下使苯酚或取代的酚与碳酰卤例如光气接触。 催化剂选自磷酸烷基酯，亚磷酸芳基酯，磷酸二苯酯，有机亚磷酸盐和磷酸盐，有机焦磷酸盐，无机磷和磷酸以及磷氧化物。

    POLYMER DEVOLATILIZER INCORPORATING IMPROVED FLAT PLATE HEAT EXCHANGER DESIGN
    85.
    发明申请
    POLYMER DEVOLATILIZER INCORPORATING IMPROVED FLAT PLATE HEAT EXCHANGER DESIGN 审中-公开
    改良平板热交换器设计的聚合物灭活器

    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。

    PROCESS FOR THE PREPARATION OF MULTIMODAL ABS POLYMERS
    86.
    发明申请
    PROCESS FOR THE PREPARATION OF MULTIMODAL ABS POLYMERS 审中-公开
    制备多模ABS聚合物的方法

    公开(公告)号：WO1995022570A1

    公开(公告)日：1995-08-24

    申请号：PCT/US1995001272

    申请日：1995-01-30

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  DION, Robert, P. ,  LENG, Patricia, B. ,  MITCHELL, David, W.

    IPC: C08F279/04

    CPC classification number: C08F279/02 ,  C08F279/04 ,  C08L51/04 ,  C08L55/02 ,  C08F212/08 ,  C08L2666/04 ,  C08L2666/24

    Abstract: Rubber-modified monovinylidene aromatic copolymers having an enhanced combination of gloss, toughness and melt flow characteristics are provided by a process wherein a rubber latex having a specified particle size is partially agglomerated, emulsion graft polymerized to a specified graft copolymer to rubber (G:R) ratio and a specified graft copolymer molecular weight and further agglomerated during subsequent dewatering and/or melt-compounding operations.

    Abstract translation: 具有光泽度，韧性和熔体流动特性的组合增强的橡胶改性单亚乙烯基芳族共聚物通过一种方法提供，其中具有特定粒度的橡胶胶乳部分凝聚，乳液接枝聚合成规定的橡胶接枝共聚物（G：R ）比和特定的接枝共聚物分子量，并在随后的脱水和/或熔融混合操作期间进一步团聚。

    METHOD OF MAKING METALLIC CARBIDE POWDERS
    87.
    发明申请
    METHOD OF MAKING METALLIC CARBIDE POWDERS 审中-公开
    制造金属碳化物粉末的方法

    公开(公告)号：WO1995021946A1

    公开(公告)日：1995-08-17

    申请号：PCT/US1995001675

    申请日：1995-02-10

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  DUNMEAD, Stephen, D. ,  MOSSNER, David, D.

    IPC: C22C29/08

    CPC classification number: C01B32/949 ,  C01B32/90 ,  C01B32/907 ,  C01P2004/62 ,  C01P2006/80

    Abstract: A method of making metallic carbide powders includes heating a non-static solid reactant mixture of a metal oxide and a source of carbon to a first elevated temperature which is sufficient to cause at least partial carburization of the mixture. The heating is performed in a non-reducing atmosphere having a total pressure of at least one atmosphere for a sufficient time to form a partially-carburized mixture. The source of carbon is employed at a level which is less than the stoichiometric amount needed to produce the metallic carbide. The method may further include admixing a sufficient level of a source of carbon to the partially-carburized mixture to form an adjusted mixture having a total carbon content of the stoichiometric amount needed to make the metallic carbide and carburizing the adjusted mixture in a hydrogen-containing atmosphere at a second elevated temperature which is sufficient to cause the adjusted mixture to form the metallic carbide having a particle size of less than 0.2 micrometers in diameter.

    Abstract translation: 制备金属碳化物粉末的方法包括将金属氧化物和碳源的非静态固体反应物混合物加热至足以引起混合物至少部分渗碳的第一升高温度。 加热在具有至少一个气氛的总压力的非还原气氛中进行足够的时间以形成部分渗碳的混合物。 碳源的使用量低于生产金属碳化物所需的化学计量量。 该方法还可以包括将足够水平的碳源混合到部分渗碳的混合物中以形成调整的混合物，其具有制备金属碳化物所需的化学计量量的总碳含量并将调节的混合物渗碳在含氢的 气氛在足以使经调整的混合物形成粒径小于0.2微米直径的金属碳化物的第二升高温度下进行。

    PROCESS TO REACT EPOXIDE-CONTAINING COMPOUNDS AND ALIPHATIC ALCOHOLS
    90.
    发明申请
    PROCESS TO REACT EPOXIDE-CONTAINING COMPOUNDS AND ALIPHATIC ALCOHOLS 审中-公开
    反应含环氧化合物和醇类的方法

    公开(公告)号：WO1995017445A1

    公开(公告)日：1995-06-29

    申请号：PCT/US1994013427

    申请日：1994-11-17

    Applicant: THE DOW CHEMICAL COMPANY ,  LIAO, Zeng, K. ,  BERTRAM, James, L.

    Inventor： THE DOW CHEMICAL COMPANY

    IPC: C08G59/68

    CPC classification number: C08G59/62 ,  C07D303/16 ,  C07D303/24 ,  C08G59/04 ,  C08G59/1444 ,  C08G59/687

    Abstract: A reaction between: (1) a compound that contains one or more epoxide moieties per molecule, and (2) a compound that contains one or more primary aliphatic hydroxyl groups per molecule; is catalyzed by: (3) trifluoromethanesulfonic acid or a derivative therof and run at a temperature of no more than 130 DEG C. The catalyst preferably catalyzes reaction at the primary aliphatic hydroxyl group, so that the resulting resin does not gel. It can be optionally used at relatively moderate temperatures without solvents.

    Abstract translation: 以下之间的反应：（1）每分子含有一个或多个环氧化物部分的化合物，和（2）每分子含有一个或多个伯脂肪族羟基的化合物; 催化剂为：（3）三氟甲磺酸或其衍生物，并在不超过130℃的温度下进行催化。催化剂优选催化脂族羟基的反应，使得所得树脂不凝胶化。 它可以任选地在相对温和的温度下使用而没有溶剂。

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