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71.发明授权Polymer scale preventive process using a coating of chitosan salt and phenothiazine 失效使用壳聚糖盐和吩噻嗪涂层的聚合物垢预防方法
公开(公告)号：US5486582A
公开(公告)日：1996-01-23
申请号：US357145
申请日：1994-12-15
IPC分类号： C08F2/00
CPC分类号： C08F2/004
摘要： A polymer scale preventive process for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising (A) a water-soluble basic polysaccharide and (B) a phenothiazine. The process is used for forming a coating on the inner wall, etc. of a polymerization vessel, and highly safe for operators. Deposition of polymer scale can be effectively prevented, and polymeric product with high whiteness or a low initial coloration is obtained.
摘要翻译： 用于聚合具有烯属不饱和双键的单体的聚合物垢预防方法，包括（A）水溶性碱性多糖和（B）吩噻嗪。 该方法用于在聚合容器的内壁等上形成涂层，并且对操作者是高度安全的。 可以有效地防止聚合物垢的沉积，获得高白度或低初始着色的聚合物。
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公开(公告)号：US5302639A
公开(公告)日：1994-04-12
申请号：US963511
申请日：1992-10-20
CPC分类号： C08F2/004
摘要： A polymer scale preventive agent for use in polymerization of a monomer having an ethylenic double bond, comprising (A) a nitrogen-containing organic compound having at least five continuous conjugated .pi. bonds, (B) an anionic organic compound having at least one group selected from the group consisting of the sulfonic acid group and the carboxylic group and having at least five continuous conjugated .pi. bonds, and (C) a vinylpyrrolidone-based polymer. The agent is used for forming a coating on the inner wall, etc. of a polymerization vessel. Deposition of polymer scale can be effectively prevented not only in the liquid phase area but also in the vicinity of the interface between the gas and liquid phases. Products formed from polymer obtained have very few fish eyes.
摘要翻译： 一种用于聚合具有烯属双键的单体的聚合物防垢剂，其包含（A）具有至少五个连续共轭（π）键的含氮有机化合物，（B）具有至少一个 选自磺酸基和羧基并且具有至少五个连续共轭（π）键的基团，和（C）乙烯基吡咯烷酮基聚合物。 该试剂用于在聚合容器的内壁等上形成涂层。 可以有效地防止聚合物垢的沉积，不仅在液相区域中，而且在气相和液相之间的界面附近。 由获得的聚合物形成的产品鱼眼非常少。
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73.发明授权Polymer scale preventive agent, polymerization vessel for preventing polymer scale deposition, and process of producing polymer using said vessel 失效聚合物垢防止剂，用于防止聚合物垢沉积的聚合容器，以及使用所述容器生产聚合物的方法
公开(公告)号：US5254646A
公开(公告)日：1993-10-19
申请号：US755764
申请日：1991-09-06
IPC分类号： C08F2/00
CPC分类号： C08F2/004
摘要： A polymer scale preventive agent for use in polymerization of a monomer having an ethylenic double bond, comprising at least one compound selected from the group consisting of agars and agaroses. A process of producing a polymer by polymerizing the monomer in a polymerization vessel having on its inner wall surfaces a coating comprising the scale preventive agent. Polymer scale deposition inside the polymerization can be effectively prevented, and polymers with high whiteness can be prepared. Moreover, the scale preventive agent no poisonousness and is highly safe.
摘要翻译： 一种用于聚合具有烯属双键的单体的聚合物防垢剂，其包含至少一种选自琼脂和琼脂的化合物。 通过在聚合容器中聚合单体制备聚合物的方法，该聚合容器在其内壁上具有包含防垢剂的涂层。 可以有效地防止聚合中的聚合物垢沉积，并且可以制备高白度的聚合物。 此外，防垢剂无毒，安全性高。
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74.发明授权Method for removing polymer scale deposited on reactor walls and a polymer scale remover agent therefor 失效用于去除沉积在反应器壁上的聚合物垢的方法和用于其的聚合物垢去除剂
公开(公告)号：US4591391A
公开(公告)日：1986-05-27
申请号：US711036
申请日：1985-03-12
CPC分类号： C08F2/008
摘要： The invention provides an efficient method for removing polymer scale deposited on the walls of the polymerization reactor after completion of a polymerization run of an ethylenically unsaturated monomer, e.g. vinyl chloride, in an aqueous medium. The polymer scale adhering to the walls is soaked with a scale-remover solution containing a soluble cellulose derivative, such as ethyl cellulose, hydroxypropyl methyl cellulose and the like, applied thereto and, after standing as wet for a while, washed down easily with water. Certain additives to the solution, e.g. acids, alkalis, paraffins and emulsifying agents, may further enhance the effectiveness of the remover solution.
摘要翻译： 本发明提供了一种有效的方法，用于在烯属不饱和单体的聚合运行完成之后，去除沉积在聚合反应器壁上的聚合物垢。 氯乙烯，在水性介质中。 粘附在壁上的聚合物垢用含有可溶性纤维素衍生物（例如乙基纤维素，羟丙基甲基纤维素等）的除垢剂溶液浸渍，并在湿过一会儿后，用水轻轻洗涤 。 某些添加剂，例如溶液。 酸，碱，石蜡和乳化剂可进一步提高去除剂溶液的有效性。
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75.发明授权
公开(公告)号：US4539230A
公开(公告)日：1985-09-03
申请号：US601052
申请日：1984-04-16
摘要： The invention provides a method for preventing deposition of polymer scale on the reactor walls in the polymerization of an ethylenically unsaturated monomer, in particular, by emulsion polymerization. The method comprises coating the reactor walls with a coating composition containing, as the essential components, (A) an organic compound having at least 5 conjugated .pi. bonds in a molecule, (B) a chelating agent and (C) a metal compound capable of producing metal ions having a coordination number of at least 2 which presumably forms a metallic chelate compound with the chelating agent contributing to the formation of a strongly adsorbed layer on the reactor walls. The coating composition may be further admixed with a silicic acid compound such as a colloidal silica.
摘要翻译： 本发明提供了一种防止在烯键式不饱和单体聚合反应器壁上沉积聚合物垢的方法，特别是通过乳液聚合。 该方法包括用包含以下成分的涂料组合物涂覆反应器壁：（A）在分子中具有至少5个共轭π键的有机化合物，（B）螯合剂和（C）能够 产生配位数至少为2的金属离子，这可能与螯合剂形成金属螯合化合物有助于在反应器壁上形成强吸附层。 涂料组合物可以进一步与硅酸化合物如胶体二氧化硅混合。
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公开(公告)号：US4180634A
公开(公告)日：1979-12-25
申请号：US888166
申请日：1978-03-20
摘要： A method for polymerizing vinyl chloride in an aqueous suspension wherein polymer scale is prevented from depositing on walls and other surfaces in contact with monomer in a polymerization reactor. According to the method, one or more compounds selected from iodine salts of alkali metals and alkaline earth metals are added to the polymerization mixture. The effect of this method can be enhanced synergistically by coating a polar organic compound or an organic dye over the surfaces in contact with the monomer.
摘要翻译： 一种在水性悬浮液中聚合氯乙烯的方法，其中防止聚合物垢在聚合反应器中沉积在与单体接触的壁和其它表面上。 根据该方法，将一种或多种选自碱金属和碱土金属的碘盐的化合物加入到聚合混合物中。 通过在与单体接触的表面上涂布极性有机化合物或有机染料，可以协同地提高该方法的效果。
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公开(公告)号：US4173696A
公开(公告)日：1979-11-06
申请号：US871249
申请日：1978-01-23
CPC分类号： C08F2/004
摘要： A novel and improved method for polymerizing a vinyl monomer in a polymerization reactor is provided. The inner walls of the polymerization reactor and other surfaces coming into contact with the monomer are coated with an aqueous liquid containing at least one alkali metal or ammonium salt of an anionic dye of the sulfonic carboxylic acid form and having a pH value adjusted not to exceed 7 by aid of a pH adjusting agent, and the thus coated surfaces are dried with heat before the polymerization is conducted. The method serves to greatly reduce the deposition of polymer scale on those surfaces and, consequently, improve the productivity as well as the quality of polymer product.
摘要翻译： 提供了一种在聚合反应器中聚合乙烯基单体的新颖和改进的方法。 聚合反应器的内壁和与单体接触的其它表面涂覆有含有至少一种磺酸羧酸形式的阴离子染料的碱金属盐或铵盐的水溶液，其pH值调节不超过 通过pH调节剂，并且在进行聚合之前将这样涂覆的表面加热干燥。 该方法用于大大降低聚合物垢在这些表面上的沉积，从而提高聚合物产品的生产率和质量。
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78.发明授权
公开(公告)号：US4105839A
公开(公告)日：1978-08-08
申请号：US713894
申请日：1976-08-12
IPC分类号： C08F236/10 , C08F2/00 , C08F2/18 , C08F2/44 , C08F214/08 , C08F216/06 , C08F2/16
CPC分类号： C08F2/004
摘要： In the polymerization of at least one ethylenically unsaturated monomer other than vinyl chloride, deposition of polymer scale on the inner walls of a polymerization reactor and other surfaces coming into contact with the monomer is effectively prevented (regardless of the type of polymerization used, so long as it takes place in a heterogeneous phase) by coating the surfaces of the reactor with at least one compound selected from organic electron donor compounds and organic electron-acceptor compounds prior to polymerization; the compound or compounds having been or being brought into contact with an oxidizing agent, a reducing agent, an acid or a base, or having been or being irradiated with ultraviolet light.
摘要翻译： 在除了氯乙烯之外的至少一种烯键式不饱和单体的聚合中，聚合物垢在聚合反应器的内壁和与单体接触的其它表面上的沉积被有效地防止（不管使用的聚合物类型如何长 因为它发生在非均相中）通过在聚合之前用至少一种选自有机电子给体化合物和有机电子受体化合物的化合物涂覆反应器的表面; 已经或已经与氧化剂，还原剂，酸或碱接触的化合物或化合物，或已被或被紫外线照射的化合物或化合物。
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公开(公告)号：US4090015A
公开(公告)日：1978-05-16
申请号：US818756
申请日：1977-07-25
IPC分类号： C08F2/00 , C08F2/22 , C08F2/24 , C08F12/08 , C08F279/04
CPC分类号： C08F2/004
摘要： In the emulsion polymerization of a dienic monomer or a mixture containing a dienic monomer and at least one other copolymerizable monomer in an aqueous medium, the deposition of polymer scale on the inner walls of the polymerization reactor and other surfaces in contact with the monomer or monomeric mixture can be remarkably reduced or prevented by providing coating layers of an organopolysiloxane on those surfaces, prior to the polymerization, by applying the organopolysiloxane directly to the surfaces or by applying one or a mixture of hydrolyzable organosilanes to the surfaces, followed by hydrolysis-condensation of the silanes, to form the organopolysiloxane in situ.
摘要翻译： 在含水介质中的二烯单体或含有二烯单体和至少一种其它可共聚单体的混合物的乳液聚合中，在聚合反应器的内壁和与单体或单体接触的其它表面上沉积聚合物垢 通过在聚合前在这些表面上提供有机聚硅氧烷的涂层，通过将有机聚硅氧烷直接施加在表面上或者通过将表面上施加一种或可水解有机硅烷的混合物，然后进行水解缩合，可以显着降低或防止混合物 的硅烷，原位形成有机聚硅氧烷。
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