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1. 发明授权

US5880221A Redistribution of polyphenylene ethers and polyphenylene ethers with novel structure 失效
标题翻译：具有新颖结构的聚苯醚和聚苯醚的再分布
公开(公告)号：US5880221A
公开(公告)日：1999-03-09
申请号：US800694
申请日：1997-02-14
申请人： Juraj Liska , Hubertus Adrianus Maria van Aert , Gert De Wit
发明人： Juraj Liska , Hubertus Adrianus Maria van Aert , Gert De Wit
IPC分类号： C08G65/48 , C08G65/38
CPC分类号： C08G65/485
摘要： The present invention deals with the distribution of polyphenylene ethers 1. by reacting the polyphenylene ether in solution with a phenolic compound, wherein special phenolic compounds are used. The redistribution reaction can be performed in toluene or in toluene/alcohol blends. The reaction can be run in the presence or the absence of a catalyst. By using a process for the redistribution of polyphenylene ethers by reacting the polyphenylene ether in solution with a phenolic compound, wherein the polyphenylene ether is reacted with a phenolic compound with formula 3 wherein the phenolic rings are disubstituted with methyl groups or ethyl groups in the ortho positions and the group X is separated from the phenolic ring through at least two carbon atoms and the phenolic compound has a molecular weight of not more than 400 g/mol, preferably not more than 300 g/mol and the redistribution is performed in a mixture of toluene and methanol with 1-30 volume % of methanol or in toluene in the presence of a phase transfer catalyst such as tri (C8-C1O alkyl) methyl ammonium chloride as a promoter; and a diphenoquinone, preferably of 3,3',5,5'-tetramethyl-4,4'-diphenoquinone is used as a catalyst and the molar concentration of the phenolic compound is chosen between 0.9 to 1.1 times the molar quantity of monomeric units in the polyphenylene ether in the reaction solution, more than 90% of the phenolic compound can be incorporated in the polyphenylene.
摘要翻译：本发明涉及聚苯醚1.通过溶液中的聚苯醚与酚类化合物的反应，其中使用了特殊的酚类化合物。再分布反应可在甲苯或甲苯/醇混合物中进行。反应可以在催化剂存在或不存在下进行。通过使用溶液中的聚苯醚与酚类化合物反应来重新分配聚苯醚的方法，其中聚苯醚与式3的酚类化合物反应，其中酚环在邻位上被甲基或乙基二取代位置，并且基团X通过至少两个碳原子与酚环分离，酚类化合物的分子量不超过400g / mol，优选不大于300g / mol，并且重新分布在混合物中进行的甲苯和甲醇与1-30体积％的甲醇或在甲苯中，在相转移催化剂如三（C 8 -C 10烷基）甲基氯化铵作为助催化剂的存在下反应; 并且使用优选3,3'，5,5'-四甲基-4,4'-联苯醌的联苯醌作为催化剂，并且酚类化合物的摩尔浓度选自单体单元的摩尔量的0.9至1.1倍在反应溶液中的聚苯醚中，可以将多于90％的酚类化合物加入到聚亚苯基中。

2. 发明授权

US5675044A Process for recovery of bisphenol-A from thermoplastic polymer containing dihydric phenol units 失效
标题翻译：从含二羟酚单元的热塑性聚合物中回收双酚A的方法
公开(公告)号：US5675044A
公开(公告)日：1997-10-07
申请号：US673990
申请日：1996-07-01
申请人： Paul Eijsbouts , Jos De Heer , Gabrie Hoogland , Srikanth Nanguneri , Gert De Wit
发明人： Paul Eijsbouts , Jos De Heer , Gabrie Hoogland , Srikanth Nanguneri , Gert De Wit
IPC分类号： C07C27/02 , C07C37/52 , C07C37/82 , C07C39/16 , C07C37/84
CPC分类号： C07C39/16 , C07C37/0555 , C08J11/16 , C08J2369/00 , Y02W30/705
摘要： A method of recovering dihydric phenol, particularly bisphenol-A, from compositions containing the reaction residue of bisphenol-A units which method comprises: a. granulating a bisphenol-A containing polymer; b. treating the particles with an alcohol, or any other organic swelling solvent miscible with water and easily distilled off from an aqueous solution, preferably a C.sub.1 -C.sub.10 alcohol for a time sufficient to swell the particles; c. contacting the swelled particles with a ammoniacal solution at a temperature of at least about 25.degree. C. depending on the swelling solvent employed in order to selectively sever the ester bonds of the bisphenol-A residue units; d. separating the liquid phase from the solid phase; e. distilling ammonia and swelling solvent from the liquid phase of d. above, thus obtaining an essentially aqueous solution with dissolved urea and partially precipitated bisphenol-A; f. adding sufficient water to the residue of e. above to precipitate bisphenol-A thereby forming a liquid and solid phase; g. recovering the solid phase of bisphenol-A; and h. drying the bisphenol-A. Since urea is soluble in water, urea goes into solution in step f. above. The urea is, therefore, recoverable, as well, which can be used as such or broken down into its component parts such as carbon dioxide and ammonia which ammonia can also be reused in this ammonical process.
摘要翻译：从含有双酚A单元的反应残基的组合物中回收二元酚，特别是双酚A的方法，该方法包括：a。造粒含双酚A的聚合物; b。用醇处理颗粒，或与水混溶的任何其它有机溶胀溶剂，并且容易从水溶液，优选C1-C10醇中蒸出足以溶胀颗粒的时间; C。根据所用的溶胀溶剂，使溶胀的颗粒与氨溶液在至少约25℃的温度下接触，以选择性地切断双酚A残基单元的酯键; d。将液相与固相分离; e。从d的液相中蒸馏氨和溶胀溶剂。从而获得具有溶解的尿素和部分沉淀的双酚A的基本水溶液; F。向e的残留物中加入足够的水。以沉淀双酚A，从而形成液相和固相; G。回收双酚A的固相; 和h。干燥双酚A。由于尿素可溶于水，所以在步骤f中尿素进入溶液。以上。因此，尿素也是可回收的，其可以原样使用或分解成其组分部分如二氧化碳和氨，氨也可以在该氨过程中再次使用。

3. 发明授权

US6013167A Cataphoretic electrodeposition of polyetherimide 失效
标题翻译：聚醚酰亚胺的电渗电沉积
公开(公告)号：US6013167A
公开(公告)日：2000-01-11
申请号：US127024
申请日：1998-07-31
申请人： Christian Bailly , Gert De Wit , Francois Guy-Marie Schue , Rossitza Schue , El Houssain Qariouh
发明人： Christian Bailly , Gert De Wit , Francois Guy-Marie Schue , Rossitza Schue , El Houssain Qariouh
IPC分类号： C08G73/16 , C08J3/07 , C08K5/092 , C08K5/17 , C08L79/00 , C09D5/02 , C09D5/44 , C09D179/08 , C25D13/06
CPC分类号： C08J3/07 , C09D5/4419 , C08J2379/08 , Y10S524/901
摘要： A stable emulsion comprising a polyetherimide resin, neutralization agent, cosolvent, solvent, ring opening agent, and water, for use in a cataphoretic deposition process for forming a polyetherimide coating on a substrate, particularly a substrate having a complex geometry.
摘要翻译：一种包含聚醚酰亚胺树脂，中和剂，共溶剂，溶剂，开环剂和水的稳定乳液，用于在基材上，特别是具有复杂几何形状的基材上形成聚醚酰亚胺涂料的阴离子沉积工艺。

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