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    • 91. 发明公开
    • Verfahren zur kontinuierlichen Herstellung von vernetzten feinteiligen gelförmigen Polymerisaten
    • 一种用于连续生产聚合物凝胶的交联细颗粒的方法。
    • EP0223063A2
    • 1987-05-27
    • EP86114234.7
    • 1986-10-15
    • BASF Aktiengesellschaft
    • Nowakowsky, Bernhard Henryk, Dr.Beck, JürgenHartmann, Heinrich, Dr.Vamvakaris, Christos, Dr.
    • C08F220/04C08F2/10
    • C08F2/10B01J19/18B01J2219/00162B01J2219/00166B01J2219/182Y10S526/92
    • Verfahren zur kontinuierlichen Herstellung von vernetzten, feinteiligen, gelförmigen Polymerisaten durch Copolymerisieren von Monomermischungen, die pro 100 Gew.-Teile einer zu jeweils 50 bis 100 Mol.% neutralisierten Acrylsäure oder Methacrylsäure, Acrylamid, Methacrylamid und N-Vinylpyr­rolidon mit 0,01 bis 5 Gew.-Teilen eines Vernetzers, in 20 bis 65 gew.%iger wäßriger Lösung in Gegenwart von Initiatoren bei Tempera­turen von 45 bis 95°C in einem einwelligen zylindrischen Mischer, an dessen Rührwelle Scheibensegmente angeordnet sind, die am äußeren Ende Mischbarren in einer solchen Anordnung aufweisen, daß dadurch eine För­derung der am Anfang des Mischers zugegebenen Stoffe in axialer Richtung zum Ende des Mischers bewirkt wird, die wäßrige Monomerlösung im Mischer unter einem Druck von 100 bis 800 mbar polymerisiert, während der Poly­merisation einen Teil des Wasser entfernt, so daß ein krümeliges Gel mit einem Feststoffgehalt von 30 bis 70 Gew.% ausgetragen wird.
    • 通过共聚每100份按重量计包括一个各自的单体混合物连续生产聚合物凝胶的交联细颗粒的方法,有50〜100摩尔%中和的丙烯酸或甲基丙烯酸,丙烯酰胺,甲基丙烯酰胺和N-乙烯基吡咯烷酮与0.01-5 (重量)的交联剂的部分。在20〜65%浓度通过在引发剂的存在下,在45℃的温度至95℃的单螺杆圆筒型混合机,在搅拌轴盘区段重量水溶液在混合杆的外端部设置成 具有这样的设置,其特征在于一个促销在朝向混合器的端部轴向上的混合器物质的开头所添加的有效时,在聚合过程中的100〜800毫巴,压力下在混合器内的单体水溶液进行聚合除去水,使一部分 易碎凝胶重量具有30至70%的固体内容物排出。
    • 97. 发明公开
    • Aqueous phase polymerization of water miscible monomers
    • 聚合哇wasserlöslichenMonomeren在wässriger阶段。
    • EP0066332A2
    • 1982-12-08
    • EP82200614.4
    • 1982-05-17
    • THE DOW CHEMICAL COMPANY
    • Sanner, James William
    • C08F2/10C08F4/40
    • C08F4/52C08F2/10
    • This invention is directed to a process for polymerizing water miscible monomers which process comprises (1) contacting an aqueous phase containing a water miscible monomer with an initiating amount of an initiator and (2) subjecting the resulting aqueous phase to conditions sufficient to polymerize the monomer to form a water-soluble polymer. The initiator employed in this invention contains a metal borohydride such as sodium borohydride and a metal ion that can be reduced by the borohydride such as cupric ion. The water-soluble polymers produced by the process of this invention are employed as additives in the manufacture of paper products, as water purification coagulants, as flocculants for a wide variety of aqueous dispersions such as sewages and industrial waste water, as the fluid mobility control agents in enhanced oil recovery, and as treating agents in a wide variety of other applications. 0
    • 水混溶性单体如丙烯酰胺在含有硼氢化钠如硼氢化钠的引发剂和容易还原的金属离子如铜离子的存在下,在水相中聚合。
    • 99. 发明公开
    • Low molecular weight watersoluble polymers, their preparation and their use in scale inhibition
    • 水溶性聚合物与低分子量,它们的制备和它们作为垢抑制剂的用途。
    • EP0014083A1
    • 1980-08-06
    • EP80300180.9
    • 1980-01-21
    • ROHM AND HAAS COMPANY
    • Hughes, Kathleen AnneKine, Benjamin BerylSwift, Graham
    • C08F20/04C08F2/10
    • C08F2/10
    • in the preparation of low molecular weight water soluble polymers having a molecular weight of up to about 50,000, monomer comprising (a) at least one of acrylic acid, methacrylic acid, acrylamide, methacrylamide, alkylpolyalkoxyacrylate, al- kylpolyalkoxy methacrylate, N-vinyl pyrollidone, acryloxypropionic acid, methacrolein and acrolein and optionally from about 5 to 50% by weight of the total monomers present of (b) at least one of itaconic acid, maleic acid, fumaric acid, hydroxyethylmethacrylate, hydroxypropylmethacrylate, hydroxyethylacrylate, hydroxypropylacrylate, acrylonitrile, methacrylonitrile, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, t-butylaminoethyl acrylate, 4-vinyl pyridine, beta-hydroxyethyldimethylaminoethyl methacrylate salt and t-butylaminoethyl methacrylate, is reacted in an aqueous solution system at a temperature up to the boiling point of said system in the presence of a catalyst system comprising initiator and metal salt wherein the molar ratio of initiator to metal ion is from about 10:1 to about 5000:1, preferably from 10:1 to 150:1, and the initiator is present in an amount of from about 0.5 weight percent to about 35 weight percent based on the weight of monomer present. The catalyst system may also comprise reducing agent wherein the molar ratio of initiator to metal ion is preferably from about 150:1 to about 5000:1 and the molar ratio of initiator to reducing agent is from about 0.5:1 to about 20:1. Polymer prepared by this method, such as polyacrylic acid, may be used as a scale inhibitor.
    • 在低分子量的水溶性聚合物的制备方法具有高至约50,000,单体包括:(A)至少一种丙烯酸,甲基丙烯酸,丙烯酰胺,甲基丙烯酰胺,alkylpolyalkoxyacrylate,alkylpolyalkoxy甲基丙烯酸酯,N-乙烯基吡咯烷酮,丙烯酰氧基的分子量 酸,甲基丙烯醛和丙烯醛和任选地为约5至50重量%的单体存在(b)至少衣康酸,马来酸,富马酸,甲基丙烯酸羟乙基酯,羟丙基甲基丙烯酸酯,羟乙基丙烯酸酯,羟丙基,丙烯腈,甲基丙烯腈,二甲基氨基乙基中的一个的总的 丙烯酸酯,二甲基氨基乙基甲基丙烯酸酯,叔丁基氨基乙基丙烯酸酯,4-乙烯基吡啶,β-hydroxyethyldimethylaminoethyl甲基丙烯酸盐和叔丁基氨基乙酯,进行反应在温度到wässrige溶液系统至所述系统的沸点在催化剂的存在下 系统,包括引发剂和金属盐worin摩尔RA 引发剂的二氧化钛,以金属离子为约10:1至约5000:1,优选10:1至150:1,且所述引发剂的存在重量的量为约0.5重量%至约35%,基于 重量存在的单体。 因此,该催化剂系统可以包括还原剂worin引发剂与金属离子的摩尔比优选为约150:1至约5000:1和引发剂与还原剂的摩尔比为约0.5:1至约20:1。 通过这种方法,颜色准备聚合物:例如聚丙烯酸,可以用作防垢剂。