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    • 43. 发明申请
    • REDOX POLYMERIZATION OF VINYL AROMATIC MONOMERS BY PHOTOSYNTHESIS
    • 光致合成乙烯基芳香族单体的氧化还原聚合
    • WO2007018995A2
    • 2007-02-15
    • PCT/US2006/028127
    • 2006-07-19
    • FINA TECHNOLOGY, INC.SOSA, JoseREIMERS, Jay
    • SOSA, JoseREIMERS, Jay
    • C08F2/50
    • C08F2/48C08F112/08C08F279/02C08F212/08
    • A method for the production of a vinyl aromatic polymer through the use of a supported light-induced photoreductant. A reactor is provided which contains a catalyst bed comprising a light-induced photoreductant component supported on a particulate substrate forming a permeable catalyst bed. A reaction stream comprising a vinyl aromatic monomer, a soluble reductant, and a transition metal salt is introduced into the reactor and passed through the catalyst bed. In addition, a gaseous oxidizing agent is introduced into the reactor and flowed through the catalyst bed and into contact with the reaction stream. The catalyst bed is irradiated with electromagnetic radiation in the ultraviolet or visible light range at an intensity sufficient to activate the photoreductant component and produce a free radical to initiate polymerization of the vinyl aromatic monomer to form a corresponding vinyl aromatic polymer. The vinyl aromatic polymer is then recovered from the reactor. The photoreductant component is a photoreductant dye, such as a group consisting of acridine, methylene blue, rose bengal, tetraphenylporphine, A protoporphyrin, A phthalocyanine and eosin-y and erythrosin-b. The transition metal salt may be an iron, cobalt or manganese salt and the soluble reductant is selected from the group consisting of diethanolamine, thiodiethanol, triethanolamine, benzoin, ascorbic acid, ester, glyoxal trimer and toluene sulfinic acid.
    • 通过使用负载型光诱导光还原剂生产乙烯基芳族聚合物的方法。 提供一种反应器,其含有催化剂床,所述催化剂床包含承载在颗粒基材上的光诱导的光致还原剂组分,形成可渗透催化剂床。 将包含乙烯基芳族单体,可溶性还原剂和过渡金属盐的反应物流引入反应器并通过催化剂床。 另外,将气态氧化剂引入反应器并流过催化剂床并与反应物流接触。 用足以激活光还原剂组分的强度的紫外或可见光范围的电磁辐射照射催化剂床,并产生自由基引发乙烯基芳族单体聚合形成相应的乙烯基芳族聚合物。 然后从反应器中回收乙烯基芳族聚合物。 光还原剂组分是光致还原剂染料,例如由吖啶,亚甲蓝,玫瑰红,四苯基卟吩,A原卟啉,酞菁和伊红-y以及赤藓红-b组成的组。 过渡金属盐可以是铁盐,钴盐或锰盐,可溶性还原剂选自二乙醇胺,硫代二乙醇,三乙醇胺,安息香,抗坏血酸,酯,乙二醛三聚体和甲苯亚磺酸。