Novel 1-bromo-4-(4'-bromophenoxy)-2-pentadecyl benzene and preparation thereof
申请人:Sudhakar Arvind More
公开号:US20060264680A1
公开(公告)日:2006-11-23
The present invention relates to novel brominated phenoxy compounds and to process for their preparation. More particularly, the present invention relates to synthesis of novel dibromodiphenyl ether starting from Cashew Nut Shell Liquid (CNSL);—a renewable resource material. The present invention particularly relates to novel 1-bromo-4-(4′-bromophenoxy)-2-pentadecylbenzene and to a method for it's preparation.
High Performance Poly(styrene-<i>b</i>-diene-<i>b</i>-styrene) Triblock Copolymers from a Hydrocarbon-Soluble and Additive-Free Dicarbanionic Initiator
作者:Rachid Matmour、Arvind S. More、Prakash P. Wadgaonkar、Yves Gnanou
DOI:10.1021/ja062695v
日期:2006.6.1
halogen-lithium exchange reaction (Gilman's reaction) from a diarylhalide containing a side C15 alkyl chain, has been designed and used to initiate the anionic polymerization of butadiene and styrene. The dilithiated species formed afford well-defined poly(styrene-b-butadiene-b-styrene) (SBS) triblock copolymers with a high percentage of 1,4-microstructure polybutadiene (91%) and excellent mechanical properties
设计了一种新型的烃溶性(无添加剂)二碳阴离子有机锂引发剂,通过简单的卤素-锂交换反应(吉尔曼反应)从含有侧 C15 烷基链的二芳基卤化物获得,并用于引发丁二烯和苯乙烯。形成的二锂化物质提供了定义明确的聚(苯乙烯-b-丁二烯-b-苯乙烯)(SBS)三嵌段共聚物,具有高百分比的 1,4-微结构聚丁二烯(91%)和优异的机械性能,如极限拉伸强度高于 30 MPa,断裂伸长率为 1000%。这代表了 SBS 聚合物(最常用的热塑性弹性体之一)合成方面的突破。