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1. 发明授权

US5840814A Multi-arm star polymers having a well-defined core and methods for the synthesis thereof 失效
标题翻译：具有明确核心的多臂星形聚合物及其合成方法
公开(公告)号：US5840814A
公开(公告)日：1998-11-24
申请号：US693418
申请日：1996-08-07
申请人： Istvan J. Majoros , Timea M. Marsalko , Joseph P. Kennedy
发明人： Istvan J. Majoros , Timea M. Marsalko , Joseph P. Kennedy
IPC分类号： C07C43/215 , C07C69/00 , C07C69/712 , C08F8/14 , C08G77/38 , C08G77/52 , C08G81/02 , C08G85/00
CPC分类号： C07C43/215 , C07C69/00 , C08G77/38 , C08G77/52 , C08G81/024 , C07C2103/00 , C07C2103/92
摘要： The synthesis of star polymers having well-defined arms emanating from well-defined and readily controllable calix�n!arene (n=4 to 16) cores are described. The synthesis is particularly suitable for polyisobutylene and/or polysiloxane star polymers. The synthesis has been achieved using carbocationic and/or anionic ring-opening polymerization techniques to form polymer arms of desired molecular weights, then separately preparing the calixarene derivative core, and finally, linking the arms to the core by transesterification or hydrosilation.
摘要翻译：描述了从明确定义且容易控制的杯[n]芳烃（n = 4至16）核发出具有明确定义的臂的星形聚合物的合成。该合成特别适用于聚异丁烯和/或聚硅氧烷星形聚合物。已经使用碳阳离子和/或阴离子开环聚合技术来合成以形成所需分子量的聚合物臂，然后单独制备杯芳烃衍生物核心，最后通过酯交换或硅氢化将臂与核心连接。

2. 发明授权

US5395885A Multi-arm cationic star-polymers 失效
标题翻译：多臂阳离子星形聚合物
公开(公告)号：US5395885A
公开(公告)日：1995-03-07
申请号：US169434
申请日：1993-12-17
申请人： Joseph P. Kennedy , Timea M. Marsalko , Istvan J. Majoros
发明人： Joseph P. Kennedy , Timea M. Marsalko , Istvan J. Majoros
IPC分类号： C08F293/00 , C08F297/00 , C08G81/00
CPC分类号： C08F297/00
摘要： The first synthesis of a multi-arm radial-star polyisobutylene is described. The synthesis occurred by the addition of excess divinylbenzene (DVB) linking reagent to a living polyisobutylene (PIB.sup..sym.), charge, i.e., by the "arm first" method under specific conditions. The radial structure of the star-PIB was proven by determining the molecular weight of a sample by light scattering, then selectively destroying the aromatic polydivinylbenzene core, and finally determining the molecular weight of the surviving aliphatic PIB arms. The synthesis strategy, kinetic observations during synthesis, and procedures leading to a representative star-PIB are described. This product whose M.sub.w =1,134,400 g/mole with M.sub.w /M.sub.n =2.83, contained .about.90.3 mole % (.about.78 wt. %) PIB arms and .about.9.7 mole % (.about.22 wt. %) aromatic core; thus the number of PIB arms emanating from the core was N.sub.n, arm =56 or N.sub.w, arm (weight average number of arms)=110.
摘要翻译：描述了多臂径向星形聚异丁烯的第一次合成。通过在特定条件下通过加入过量的二乙烯基苯（DVB）连接试剂与活性聚异丁烯（PIB（+））进行合成，即通过“臂第一”方法进行加料。通过用光散射确定样品的分子量，然后选择性地破坏芳族聚二乙烯基苯核心，最后确定存活的脂族PIB臂的分子量，证明了星形PIB的径向结构。描述了合成策略，合成过程中的动力学观察以及导致代表性的星形-PIB的程序。该产品的＆upbar＆Mw = 1,134,400克/摩尔＆lt;上升＆Mw /＆upbar＆Mn = 2.83，含有差异90.3摩尔％（差异78重量％）PIB臂和差异9.7摩尔％（差异22重量％）芳香核; 因此从核心发出的PIB武器的数量是＆upbar＆Nn，arm = 56或＆upbar＆Nw，手臂（重量平均臂数）= 110。

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