公开(公告)号：US4377672A

公开(公告)日：1983-03-22

申请号：US116218

申请日：1980-01-28

申请人： Hans Geschonke ,  Ulrich Goetze ,  Kurt Kreilein

发明人： Hans Geschonke ,  Ulrich Goetze ,  Kurt Kreilein

IPC分类号： C08F14/00 ,  C08F2/00 ,  C08F2/18 ,  C08F2/20 ,  C08F2/26 ,  C08F2/44 ,  C08F14/06

CPC分类号： C08F14/06

摘要： The subject of the invention is a microsuspension polymerization in water of vinyl chloride, which is carried out in the presence of monomer-soluble radical-initiators and emulsifiers. According to the invention, from about 0.01 to 0.5% by weight, based on the weight of the water, of polymers containing mono-basic or dibasic carboxylic acid units and/or salts thereof are added. Furthermore, in a preferred embodiment, emulsifiers containing perfluorinated alkyl groups are also used. Stabilization of the microsuspension latex, which is per se sensitive to shearing action, and reduction in the amount of emulsifiers used are achieved.

摘要翻译： 本发明的主题是氯乙烯的水中的微悬浮聚合，其在单体可溶的自由基引发剂和乳化剂的存在下进行。 根据本发明，加入约0.01至0.5重量％，基于水的重量，含有单碱式或二元羧酸单元和/或其盐的聚合物。 此外，在优选的实施方案中，还使用含有全氟化烷基的乳化剂。 实现了对剪切作用敏感的微悬浮胶乳的稳定化和使用的乳化剂的量的减少。

公开(公告)号：US4528337A

公开(公告)日：1985-07-09

申请号：US604082

申请日：1984-04-26

申请人： Kurt Kreilein ,  Hans Geschonke ,  Wolfgang Rummel ,  Hardo Wiemer

发明人： Kurt Kreilein ,  Hans Geschonke ,  Wolfgang Rummel ,  Hardo Wiemer

IPC分类号： C08F14/00 ,  C08F2/00 ,  C08F2/16 ,  C08F2/18 ,  C08F14/06

CPC分类号： C08F14/06 ,  Y10S526/918

摘要： A process for the manufacture of vinyl chloride polymers or copolymers by microsuspension polymerization of vinyl chloride or vinyl chloride and up to 30% by weight, based on the total monomer content, of .alpha.-olefinically unsaturated monomers copolymerizable with vinyl chloride comprising the steps of:(1) dispersing the monomer or the monomer mixture in water in the presence of from 0.1 to 3% by weight, based on the total weight of the monomer content, of microsuspension dispersion auxiliaries and from 0.001 to 3% by weight, based on the total weight of the monomer content, of microsuspension monomer - soluble radical - initiators;(2) homogenizing said dispersion so that monomer droplets mostly having a mean diameter of from 0.1 to 3 .mu.m are obtained;(3) polymerizing said homogenized dispersion in a vertically elongated reactor area at a preselected elevated temperature and elevated pressure, while(4) maintaining an inert gas cushion over said aqueous polymerization mixture in said reactor area;(5) during said polymerization withdrawing gas from said inert gas cushion and, inserting a substantially inert gas only slightly soluble in the reaction mixture and substantially free of vinyl chloride into said aqueous polymerization mixture at the lower part of said vertically elongated reactor area in the form of small bubbles so that the partial pressure of said substantially inert gas is from 0.5 to 10 bar and the volume of the gas inserted is, under the reaction conditions, from 1 to 100% of the volume of said vertically elongated reaction area per hour or taking the inert gas from an external supply, the pressure in the reactor held constant and the same amount of gas blown into the autoclave is released; and(6) recovering said vinyl chloride polymer or copolymer resulting in more uniform polymers and an improved space/time yield.

摘要翻译： 一种通过氯乙烯或氯乙烯的微悬浮聚合制造氯乙烯聚合物或共聚物的方法，以及基于总单体含量高达30重量％的可与氯乙烯共聚的α-烯属不饱和单体的方法，包括以下步骤： （1）基于单体含量的总重量为0.1〜3重量％的微悬浮分散助剂和0.001〜3重量％的单体或单体混合物在水中分散，基于 单体含量的总重量，微悬浮单体 - 可溶性自由基 - 引发剂; （2）使所述分散体均化，得到主要具有0.1至3μm平均直径的单体液滴; （3）在预选的升高的温度和升高的压力下将所述均质分散体聚合在垂直伸长的反应器区域中，同时（4）在所述反应器区域中的所述水性聚合混合物上保持惰性气体垫; （5）在所述聚合过程中，从所述惰性气体衬垫中抽出气体，并且在所述垂直伸长的反应器区域的下部将基本惰性的气体仅插入到反应混合物中并基本上不含氯乙烯进入所述水性聚合混合物 形成小气泡，使得所述基本惰性气体的分压为0.5至10巴，并且在反应条件下插入的气体的体积为每小时所述垂直伸长的反应区域的体积的1至100％ 或从外部供给的惰性气体中，反应器中的压力保持恒定，并且释放吹入高压釜中的相同量的气体; 和（6）回收所述氯乙烯聚合物或共聚物，得到更均匀的聚合物和改进的空间/时间产率。

公开(公告)号：US6046286A

公开(公告)日：2000-04-04

申请号：US765984

申请日：1997-01-03

申请人： Kurt Kreilein ,  Dirk Andrejewski ,  Helmut Hammer ,  Hellmut Jetzlsperger

发明人： Kurt Kreilein ,  Dirk Andrejewski ,  Helmut Hammer ,  Hellmut Jetzlsperger

IPC分类号： C08L27/06 ,  B01J19/18 ,  C08F2/00 ,  C08F2/16 ,  C08F2/22 ,  C08F2/24 ,  C08F14/06

CPC分类号： C08F2/22 ,  B01J19/1862 ,  C08F14/06 ,  C08F2/002 ,  B01J2219/00094

摘要： A process for the radical polymerization of ethylenically unsaturated monomers in an aqueous medium has (a) the starting solution used for the polymerization and the educts required for polymerization such as monomers, germ latex, buffering agents, emulsifiers and/or protective colloids are introduced into a pre-mixing device and thoroughly mixed, heated before being transferred to the polymerization vessel to the polymerization temperature, no initiator being used if a thermal radical initiator is used and only individual initiator components being used where a redox initiator system is used; (b) once the mixture has reached polymerization temperature, it is transferred to a polymerization vessel, the wall of which during the transfer and polymerization is maintained by cooling at a temperature below the polymerization temperature; polymerization is started by adding the thermal initiator or additional initiator components of the redox initiator system, the other educts being added at the start of and/or during polymerization; and (c) once the polymerization is finished and the pressure differential between the polymerization vessel and degassing vessel has been reduced to 3 bar or less, the polymer dispersion is let out into a degassing vessel and degassed by applying heat and/or a vacuum.

摘要翻译： PCT No.PCT / EP95 / 04830 Sec。 371日期1997年1月3日 102（e）日期1997年1月3日PCT提交1995年12月7日PCT公布。 第WO96 / 17875号公报 日期1996年6月13日在水性介质中烯键式不饱和单体的自由基聚合方法具有（a）用于聚合的起始溶液和聚合所需的离析物，例如单体，生胶乳，缓冲剂，乳化剂和/或 将保护胶体引入预混合装置中并充分混合，加热，然后转移至聚合反应器的聚合温度，如果使用热自由基引发剂，则不使用引发剂，并且仅在使用氧化还原引发剂体系的情况下使用单独的引发剂组分 用来; （b）一旦混合物达到聚合温度，将其转移到聚合容器中，其转移和聚合过程中的壁在低于聚合温度的温度下冷却保持; 通过加入氧化还原引发剂体系的热引发剂或另外的引发剂组分来开始聚合，其它离子在聚合开始和/或聚合过程中加入; 和（c）一旦聚合完成并且聚合容器和脱气容器之间的压差已经降低到3巴或更小，则聚合物分散体被排出到脱气容器中并通过施加热和/或真空脱气。