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1. 发明授权

US4795780A Process for the preparation of binary .alpha.-methylstyrene/acrylonitrile resins by multi-stage bulk polymerization 失效
标题翻译：通过多阶段本体聚合制备二元α-甲基苯乙烯/丙烯腈树脂的方法
公开(公告)号：US4795780A
公开(公告)日：1989-01-03
申请号：US75775
申请日：1987-07-20
申请人： Frank Wingler , Klaus Summermann , Gerd Wassmuth , Alfred Pischtschan , Joachim Doring
发明人： Frank Wingler , Klaus Summermann , Gerd Wassmuth , Alfred Pischtschan , Joachim Doring
IPC分类号： C08F2/00 , C08F2/02 , C08F20/42 , C08F212/10 , C08F220/44 , C08F291/00 , C08F291/02 , C08F297/04
CPC分类号： C08F220/44
摘要： Process for the preparation of thermoplastic copolymers of .alpha.-methylstyrene and acrylonitrile by continuous bulk copolymerization ofA. 30 to 50 mol % of .alpha.-methylstyrene andB. 70 to 50 mol % of acrylonitrileat temperatures from 60.degree. to 120.degree. C. with average residence times of 4 to 12 hours in the presence of initiators which supply free radicals, carried out in at least two continuously operated mixed tank reactors, characterized in that 100 molar parts of a monomer mixture ofA.sub.0. 34 to 52 mol % of .alpha.-methylstyrene andB.sub.0. 66 to 48 mol % of acrylonitrileare fed continuously into the first tank reactor per unit time, and, with back-mixing, are copolymerized up to a conversion of 5 to 30 molar parts to give a copolymer of the compositionA.sub.1. 49 to 53 mol % of .alpha.-methylstyrene andB.sub.1. 51 to 47 mol % of acrylonitrile,and the mixture consisting of 70 to 95 molar parts of the monomers A and B and 5 to 30 molar parts of the copolymer of the composition A.sub.1 -B.sub.1 is transferred continuously to the second tank reactor and is polymerized there up at a further conversion of 5 to 55 molar parts to a total conversion of 20 to 60 molar parts to give further copolymer of the compositionA.sub.1. 49 to 53 mol % of .alpha.-methylstyrene andB.sub.1. 51 to 47 mol % of acrylonitrile,0,5 to 11.5 molar parts of acrylonitrile being removed from the vapor condenser of the second tank reactor and recycled to the first tank reactor per unit time.
摘要翻译： α-甲基苯乙烯和丙烯腈的热塑性共聚物的制备方法，通过A.在30℃〜120℃的温度下，将A.30〜50摩尔％的α-甲基苯乙烯和B.70〜50摩尔％的丙烯腈与在至少两台连续操作的混合罐式反应器中进行自由基引发剂的存在下，平均停留时间为4至12小时，其特征在于，将100摩尔份的A0的单体混合物。 34〜52摩尔％的α-甲基苯乙烯和B0。将66〜48摩尔％的丙烯腈连续进料到第一罐式反应器中，并且通过反混合共聚至5-30摩尔份的转化率，得到组合物A1的共聚物。 49〜53摩尔％的α-甲基苯乙烯和B1。丙烯腈为51〜47摩尔％，将由70〜95摩尔份的单体A，B和5〜30摩尔份的组合物A1-B1的共聚物组成的混合物连续地转移到第2槽式反应器中，在其上进一步转化5至55摩尔份，总转化率为20至60摩尔份，得到组合物A1的其它共聚物。 49〜53摩尔％的α-甲基苯乙烯和B1。丙烯腈为51〜47摩尔％，丙烷腈为0.5〜11.5摩尔份，从第二罐式反应器的蒸气冷凝器中除去，每单位时间再循环至第一罐式反应器。

2. 发明授权

US4181788A Process for the production of thermoplastic molding materials based on vinyl polymers 失效
标题翻译：用于生产基于乙烯基聚合物的热塑性成型材料的方法
公开(公告)号：US4181788A
公开(公告)日：1980-01-01
申请号：US908763
申请日：1978-05-23
申请人： Frank Wingler , Lothar Liebig , Gerd Wassmuth , Martin Ullrich , Manfred Hederich
发明人： Frank Wingler , Lothar Liebig , Gerd Wassmuth , Martin Ullrich , Manfred Hederich
IPC分类号： B01J19/24 , C08F2/00 , C08F2/02 , C08F6/00 , C08F6/28 , C08F6/10
CPC分类号： B01J19/243 , C08F6/28 , B01J2219/00094
摘要： A process for the production of thermoplastically processible moulding materials based on vinyl polymers of high chemical and molecular uniformity and having residual monomer contents of less than 0.1 mol % which comprises the steps of:(i) mass homogeneous phase polymerization of at least one vinyl monomer in a stirred continuously charged tank reactor to a conversion of from 25 to 60 mol %;(ii) directly concentrating the syrup consisting of residual monomers and vinyl polymer dissolved therein obtained from step (i) in a spiral tube evaporator at a temperature of from 60.degree. to 250.degree. C. and at a pressure of 100 m bar to 35 bar to obtain a solid content of vinyl polymer of from 40 to 90 mol %;(iii) directly charging the concentrate obtained from step (ii) to the inlet zone of a screw evaporator which consists of at least two sequential zones in order to effect further concentration, in which a first zone at a pressure of from 10 to 300 m bar and at a temperature of from 100.degree. to 250.degree. C. concentrates the vinyl polymer to a solid content of from 80 to 99 mol-%, and each subsequent zone at a pressure of 1 to 200 m bar and at a temperature of 150.degree. to 250.degree. C. concentrates the vinyl polymer to a solid content of at least 99.9 %; and(iv) recycling the residual monomers from step (ii) and the residual monomers from said first zone of the screw evaporator to the stirred and charged tank reactor without intermediate cleaning.
摘要翻译：一种生产基于乙烯基聚合物的热塑性可加工成型材料的方法，其具有高的化学和分子均匀性并且具有小于0.1摩尔％的残余单体含量，其包括以下步骤：（i）至少一种乙烯基单体的均匀相聚合在搅拌的连续加入的釜式反应器中以25至60mol％的转化率; （ii）将由步骤（i）获得的残留单体和乙烯基聚合物组成的糖浆直接浓缩在螺旋管式蒸发器中，温度为60-250℃，压力为100巴，至35巴以获得40至90mol％的乙烯基聚合物的固体含量; （iii）将由步骤（ii）获得的浓缩物直接装入由至少两个顺序区组成的螺杆蒸发器的入口区域，以便进一步浓缩，其中第一区域的压力为10-300μm 并且在100至250℃的温度下将乙烯基聚合物浓缩至固体含量为80至99mol％，并且每个后续区域在1至200mbar的压力和150℃的温度下 DEG至250℃，将乙烯基聚合物浓缩至至少99的固体含量。

3. 发明授权

US4141934A Continuous bulk polymerization process 失效
标题翻译：连续本体聚合工艺
公开(公告)号：US4141934A
公开(公告)日：1979-02-27
申请号：US668984
申请日：1976-03-22
申请人： Frank Wingler , Adolf Schmidt , Lothar Liebig , Gerd Wassmuth
发明人： Frank Wingler , Adolf Schmidt , Lothar Liebig , Gerd Wassmuth
IPC分类号： C08F2/00 , C08F2/02 , C08F212/10 , C08F220/00 , C08F220/42 , C08F257/02
CPC分类号： C08F212/10
摘要： Copolymers ofA 22 to 96 mol-% of styrene and/or .alpha.-methyl styrene,B 0 to 78 mol-% of at least one monoolefinically unsaturated monomer containing nitrile groups, andC 0 to 50 mol-% of at least one monoolefinically unsaturated monomer different from A or B are obtained by continuous bulk polymerization in a homogeneous liquid phase, in several process stages, in one or more different temperature ranges and in the presence of one or more initiators with different dissociation times in each temperature range and under pressures of from 1 to 20 bars.In first stage the monomers are copolymerized with backmixing up to a conversion of from 10 - 60 mol-% in an ideally mixed tank reactor and then after optionally additional addition of further parts of monomers copolymerization is continued with backmixing in a completely flooded, self-cleaning polymerization kneader up to a residual monomer content of from 10-50 mol-%.Residual monomers are continuously removed from the copolymer up to a content of less than 0.5% by weight based on the copolymer.The process according to the invention provides uniform, compatible, homogeneous products which are free from gel-like particles and which combine improved transparency with greater dimensional stability under heat and better mechanical properties together with improved processibility.
摘要翻译： A 22至96摩尔％的苯乙烯和/或α-甲基苯乙烯的共聚物，B 0至78摩尔％的至少一种含有腈基的单烯属不饱和单体和C 0至50摩尔％的至少一种单烯烃不同于A或B的不饱和单体通过在均相液相中，在几个工艺阶段中，在一个或多个不同温度范围内并且在一个或多个在每个温度范围和下面具有不同解离时间的引发剂的存在下连续本体聚合获得压力为1至20巴。

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