-
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。
-
12.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。
-
公开(公告)号：US5614593A
公开(公告)日：1997-03-25
申请号：US556425
申请日：1995-11-09
CPC分类号： C08F214/06 , C08F14/06
摘要： In preparing a matte vinyl chloride polymer by suspension polymerizing a monomeric charge comprising monomeric vinyl chloride in an aqueous medium, polymerization is started in the presence of 0.05-0.25 part by weight of diallyl phthalate per 100 parts by weight of the monomeric charge, and polymerization is continued while adding 0.01-0.15 part by weight of 1,6-hexanediol di(meth)acrylate per 100 parts by weight of the monomeric charge when the rate of polymerization is in the range of 20-60%. There is produced a matte vinyl chloride-diallyl phthalate copolymer having a tetrahydrofuran-insoluble gel content of 0.5-2.5% by weight in a reproducible manner. A composition prepared by blending the copolymer with a plasticizer has minimized fish-eyes and improved matting effect.
摘要翻译： 在通过将包含单体氯乙烯的单体电荷在水性介质中悬浮聚合制备无光氯乙烯聚合物时，每100重量份单体电荷在0.05-0.25重量份邻苯二甲酸二烯丙酯存在下开始聚合，并且聚合 继续加入0.01-0.15重量份的1,6-己二醇二（甲基）丙烯酸酯/ 100重量份的单体电荷，当聚合速率在20-60％的范围内时。 制备了可再现的方式，其四氢呋喃不溶性凝胶含量为0.5-2.5重量％的无光泽氯乙烯 - 二烯丙基邻苯二甲酸酯共聚物。 通过将共聚物与增塑剂共混制备的组合物使鱼眼减少并且改善了消光效果。
-
14.发明授权Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel 失效聚合物防垢剂，有效防止聚合物垢沉积的聚合容器，以及使用所述容器制备聚合物的方法
公开(公告)号：US5364466A
公开(公告)日：1994-11-15
申请号：US865265
申请日：1992-04-08
CPC分类号： C08F2/004
摘要： A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated 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 carboxyl group and having at least five continuous conjugated .pi. bonds, and (C) a water-soluble basic polysaccharide. 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键式不饱和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）具有至少一个基团的阴离子有机化合物 选自由磺酸基和羧基组成的组，并且具有至少五个连续的共轭π键，和（C）水溶性碱性多糖。 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。
-
公开(公告)号：US5282680A
公开(公告)日：1994-02-01
申请号：US63604
申请日：1993-05-19
CPC分类号： B01F5/16 , B01J19/2415 , B01J19/243 , B01J2219/00094 , B01J2219/00162 , B01J2219/00164 , B01J2219/00182
摘要： An apparatus for continuous polymerization of vinyl chloride or a vinyl chloride-based monomeric mixture, comprising a pre-mixer 1 for preparing an aqueous suspension of the vinyl chloride or vinyl chloride-based monomeric mixture, and a polymer slurry tank 5 connected to the pre-mixer 1 through a polymerization passage comprising a piping 3, wherein a pump comprising a conical hub and an impeller mounted thereon comprised of a single spiral blade is used for drawing out the aqueous suspension from the pre-mixer into the polymerization passage and for discharging a polymer slurry formed in the passage into the slurry tank, and the polymerization passage has a length sufficient for permitting the vinyl chloride or vinyl chloride-based monomeric mixture contained in the aqueous suspension flowing through the passage to be polymerized to a predetermined extent while passing through the passage. The use of the pump having the structure as above ensures a marked suppression of polymer scale deposition in the pump, heat exchanger and pipings, and makes it possible to produce a resin with few fish-eyes. The apparatus is of extremely high industrial value for carrying out continuous polymerization.
摘要翻译： 一种用于氯乙烯或氯乙烯基单体混合物的连续聚合的装置，包括用于制备氯乙烯或氯乙烯基单体混合物的水悬浮液的预混合器1和连接到前述聚合物浆料罐5的聚合物浆料罐5。 混合器1通过包括管道3的聚合通道，其中包括圆锥形轮毂和安装在其上的叶轮由包括单个螺旋叶片的泵用于将预混合器中的水悬浮液抽出到聚合通道中并用于排出 聚合物淤浆形成在通入浆料罐的通道中，并且聚合通道的长度足以允许流过通道的含水悬浮液中所含的氯乙烯或氯乙烯类单体混合物在通过时聚合至预定程度 通过通道。 具有上述结构的泵的使用确保了泵，热交换器和管道中的聚合物垢沉积的显着抑制，并且使得可以生产几乎没有鱼眼的树脂。 该设备具有非常高的工业价值用于进行连续聚合。
-
16.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：US5264505A
公开(公告)日：1993-11-23
申请号：US875832
申请日：1992-04-30
CPC分类号： C08F2/004
摘要： A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising a pyrogallol-acetone resin. 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, and polymeric product with high whiteness is obtained.
摘要翻译： 用于聚合具有烯键式不饱和双键的单体的聚合物防垢剂，其包含连苯三酚 - 丙酮树脂。 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，获得高白度的聚合物。
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.026 秒)
