-
1.发明授权Inverse interfacial polymerization for preparing certain halogenated aromatic polyesters 失效用于制备某些甲醛芳族聚酯的反相界面聚合
公开(公告)号：US4066623A
公开(公告)日：1978-01-03
申请号：US735648
申请日：1976-10-26
IPC分类号： C08G63/682 , C08G63/18 , C08G63/24 , C08G63/68
CPC分类号： C08G63/6826 , Y10S260/24
摘要： The present invention relates to a process for preparing certain halogenated aromatic polyesters by an inverse interfacial polymerization technique. More specifically, the present invention offers a method for substantially reducing the amount of low molecular weight fraction which accompanies the formation of these polyesters when prepared by standard interfacial polymerization techniques by (1) inverting the order of addition of one phase to the other, i.e. by adding the aqueous phase to the organic phase, (2) controlling the rate of addition of the aqueous phase to the organic phase and (3) adding the catalyst to the organic phase prior to the addition of the aqueous phase thereto.
-
公开(公告)号：US4401803A
公开(公告)日：1983-08-30
申请号：US342007
申请日：1982-01-18
申请人： Werner Rieder
发明人： Werner Rieder
IPC分类号： B01J19/18 , C08G63/00 , C08G63/19 , C08G63/193 , C08G63/78 , C08G63/79 , C08G63/18 , C08G63/24
CPC分类号： B01J19/1881 , C08G63/00 , C08G63/193 , B01J2219/00094
摘要： In a process for the preparation of aromatic polyesters by polycondensation of diphenols with chlorides of aromatic dicarboxylic acids by the two-phase interfacial polycondensation process, in which a dispersion as the reaction mixture is prepared from an aqueous phase, which contains the diphenolate formed with the aid of alkali metal hydroxide, and an organic-liquid phase containing the acid chlorides, this dispersion is passed, in the apparatus which is intended for carrying out the process and which comprises a reaction kettle and a dispersing device included with the latter in a circulation, through the dispersing device and the reaction kettle, the acid chloride dissolved in a largely anhydrous chlorinated solvent being continuously fed into this circulation at a point which, in the direction of flow, is upstream of the dispersing device.Preferably, the reaction mixture is here passed in the dispersing device through one or more mixing stages, in which it is each time raised to high velocities, and the kinetic energy of the mixture is then reduced to a value which is low compared with its maximum value.
摘要翻译： PCT No.PCT / AT81 / 00016 Sec。 371日期1982年1月18日第 102（e）日期1982年1月18日PCT提交1981年6月26日PCT公布。 公开号WO82 / 00149 日本1982年1月21日。在通过二相界面缩聚方法通过二酚与芳族二羧酸的氯化物缩聚制备芳族聚酯的方法中，其中作为反应混合物的分散体由水相制备， 其含有借助碱金属氢氧化物形成的二酚盐和含有酰氯的有机液相，该分散体在用于进行该方法的装置中通过，该装置包括反应釜和分散装置 通过分散装置和反应釜将溶解在大部分无水氯化溶剂中的酰氯在分散装置的上游沿着流动方向连续供给到该循环中， 。 优选地，反应混合物在分散装置中通过一个或多个混合阶段，其中每个混合阶段每次都升高到高速度，然后将混合物的动能降低到与其最大值相比较低的值 值。
-
公开(公告)号：US4412057A
公开(公告)日：1983-10-25
申请号：US331463
申请日：1981-12-16
申请人： Masahiro Asada , Miyuki Matsuura , Kazuya Yonezawa
发明人： Masahiro Asada , Miyuki Matsuura , Kazuya Yonezawa
摘要： A process for manufacturing an aromatic polyester by reacting an aromatic dicarboxylic acid dichloride with an alkali metal salt of a bisphenol comprises adding 0.01 to 100 mol %, based on the total monomer quantity, of an acid halide into the reaction system.
摘要翻译： 通过使芳族二羧酸二氯化物与双酚的碱金属盐反应来制造芳族聚酯的方法包括向反应体系中加入0.01至100摩尔％的酰基卤的总单体量。
-
公开(公告)号：US4196276A
公开(公告)日：1980-04-01
申请号：US869743
申请日：1978-01-16
CPC分类号： C08G63/64
摘要： High-molecular weight polycarbonate elastomers are produced by reacting polymer segments having an average molecular weight (Mn) of more than 600 and carboxyl groups with diphenols and phosgene according to the two-phase boundary polycondensation process at a pH value between about 9 and about 14 and a temperature between about 0.degree. C. and 80.degree. C. and, thereafter, either heat-treating the resulting reaction products at temperatures between about 40.degree. C. and about 100.degree. C. or gelling the resulting reaction products in solution in organic solvents.
摘要翻译： 高分子量聚碳酸酯弹性体是通过在约9和约14之间的pH值下，使平均分子量（Mn）大于600的聚合物链段和羧基与二酚和光气根据两相边界缩聚方法反应制备的 在约0℃至80℃之间的温度下，然后在约40℃至约100℃的温度下对所得反应产物进行热处理，或将所得反应产物在有机溶液中胶凝 溶剂。
-
公开(公告)号：US4381391A
公开(公告)日：1983-04-26
申请号：US239961
申请日：1981-03-03
申请人： Paul Y. Chen , Carl S. Marvel
发明人： Paul Y. Chen , Carl S. Marvel
IPC分类号： C08G63/682 , C08G63/688 , C08G63/24
CPC分类号： C08G63/6886 , C08G63/6826
摘要： New, easily processable, polyaromatic esters were prepared from 2,2'-diiododiphenyl-4,4'-dicarbonyl dichloride, isophthaloyl chloride and/or terephthaloyl chloride in combination with 4,4'-isopropylidene diphenol, 4,4'-sulfonyldiphenol, or resorcinol by interfacial condensation. In these polymers, phenylacetylenyl groups can be easily introduced into the polymer chain by replacing the iodine. This process leads to soluble and curable polymers from which films can be prepared. After curing the polymers are insoluble and show excellent thermal and chemical resistance. The curing process increases the polymers' softening temperature about 20.degree. C.
摘要翻译： 由2,2'-二碘二苯基-4,4'-二羰基二氯化物，间苯二酰氯和/或对苯二甲酰氯与4,4'-异亚丙基二酚，4,4'-二磺酰基二苯酚， 或间苯二酚通过界面冷凝。 在这些聚合物中，苯乙炔基可以通过置换碘容易地引入到聚合物链中。 该方法导致可以制备膜的可溶性和可固化的聚合物。 固化后，聚合物不溶，表现出优异的耐热和耐化学性。 固化过程使聚合物的软化温度升高约20℃
-
公开(公告)号：US4137218A
公开(公告)日：1979-01-30
申请号：US807754
申请日：1977-06-17
申请人： Dusan C. Prevorsek , Leon Segal
发明人： Dusan C. Prevorsek , Leon Segal
IPC分类号： C08G63/195 , C08G63/18 , C08G63/24
CPC分类号： C08G63/195
摘要： A thermoplastic benzophenone polyester consisting essentially of recurring units of the formula: ##STR1## having an intrinsic viscosity of at least 0.85 deciliter/gram as measured in 1:1 phenol/tetrachloroethane at 25.degree. C, is useful for making shaped articles having high impact strength.A process for preparing a thermoplastic polyester according to the above formula is also described which comprises the steps of (a) adding a solution of 4,4'-benzophenonedicarboxylic acid halide in an inert, water-immiscible organic solvent to a basic aqueous solution of a salt of 2,2-bis(4'-hydroxyphenyl)propane to form and precipitate the polyester during the addition and (b) recovering the precipitated polyester.There is also provided a shaped article prepared from the polyester having an impact strength of at least about 2 ft.lb./in. of notch as measured by the Izod impact test, ASTM D-256-56.
摘要翻译： 基本上由在25℃下用1:1酚/四氯乙烷测量的特性粘度至少为0.85分升/克的下式的重复单元组成的热塑性二苯甲酮聚酯可用于制造具有高冲击强度的成型制品 强度。
-
7.发明授权Thermoplastic polysiloxane-polyester (carbonate) block copolymers, their preparation and use 失效热塑性聚硅氧烷 - 聚酯（碳酸酯）嵌段共聚物，其制备和用途
公开(公告)号：US4681922A
公开(公告)日：1987-07-21
申请号：US676483
申请日：1984-11-29
IPC分类号： C08G63/00 , C08G63/18 , C08G63/68 , C08G63/695 , C08G64/00 , C08G77/445 , C08G77/448 , C08G77/40 , C08G63/24 , C08G63/46
CPC分类号： C08G77/445 , C08G63/695 , C08G77/448
摘要： Siloxane/polyester (carbonate) block copolymers comprising wholly aromatic polyester or polyestercarbonate units and from 0.5 to 7.5% by weight of polysiloxane blocks, exhibit an improved melt flowability without impairment of the heat stability.
摘要翻译： 包含全芳族聚酯或聚酯碳酸酯单元和0.5至7.5重量％聚硅氧烷嵌段的硅氧烷/聚酯（碳酸酯）嵌段共聚物表现出改进的熔体流动性，而不损害热稳定性。
-
8.发明授权Process for the preparation of new high-molecular segmented polyester-polycarbonates which can be processed by thermoplastic methods and new polyester-polycarbonates obtained according to the process 失效用于制备可通过热塑性方法加工的新型高分子量聚酯多聚碳酸酯的方法和根据该方法获得的新型聚酯多元醇
公开(公告)号：US4169868A
公开(公告)日：1979-10-02
申请号：US816567
申请日：1977-07-18
摘要： The subject of the present invention is a process for the preparation of new high-molecular weight polyester-polycarbonates which contain incorporated segments containing carboxyl groups and can be processed by thermoplastic methods, which process is characterized in that segments which contain carboxyl groups and have average molecular weights Mn (number-average of the molecular weight determined via the acid number of the segments containing carboxyl groups) of greater than about 600, preferably of greater than about 800 and in particular of between about 1,000 and 20,000, are reacted with diphenols and phosgene by the known two-phase boundary polycondensation process at a pH value of between about 9 and 14 and at a temperature of between about 0.degree. C. and 80.degree. C. and preferably of between about 15.degree. C. and 40.degree. C. and the resulting reaction products are either subjected to a heat treatment at temperatures of between about 40.degree. C. and 170.degree. C. for between about 5 minutes to 24 hours or are subjected, at temperatures of between about 130.degree. C., and 250.degree. C., to shear forces of between about 720 and 2520 kJ/kg of polymer or are gelled in solution by organic solvents. The invention also relates to the polyester-polycarbonates which are obtainable according to the invention and contain at least 2 phases, resulting from the polycarbonate constituent and the segment fraction which has terminal carboxyl groups.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.009 秒)
