会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • METHOD AND SYNTHESIS OF INITIATORS FOR TELECHELIC POLYISOBUTYLENES
    • 电纺聚对苯二甲酸乙二酯的方法与合成
    • US20130281742A1
    • 2013-10-24
    • US13977941
    • 2011-12-30
    • Joseph P. KennedyGabor Erdodi
    • Joseph P. KennedyGabor Erdodi
    • C07C41/01
    • C07C41/01C07C29/159C07C29/78C07C41/09C07C407/00C07C409/08C07C409/22C07C33/26C07C43/162
    • A new methodology for the synthesis of a novel difunctional- and a known trifunctional initiator, i.e., 1,3-di(2-methoxy-2-propyl)-5-isopropyl benzene and 1,3,5-tri(2-methoxy-2-propyl)benzene, respectively, for the preparation of di- and tri-telechelic polyisobutylenes. The synthesis proceeds in three steps: 1) catalytic peroxidation of 1,3,5-triisopropylbenzene, 2) reduction of the peroxides to the corresponding alcohols, and 3) methylation of the alcohols. By controlling the conversion of the key peroxidation step the relative ratio of di- and tri-functional intermediates can be controlled. By the use of the 1,3-di(2-methoxy-2-propyl)-5-isopropyl-benzene, well-defined di-methoxy telechelic polyisobutylenes can be synthesized. Although the overall combined yield of the two initiators was only 14-20%, because of the low cost of the starting material, reagents used, and simple manipulations these compounds represent the most cost effective initiators to-date for the preparation of telechelic polyisobutylenes.
    • 用于合成新的双官能和已知三官能引发剂的新方法,即1,3-二(2-甲氧基-2-丙基)-5-异丙基苯和1,3,5-三(2-甲氧基 -2-丙基)苯,用于制备二 - 和三 - 遥爪聚异丁烯。 合成分三个步骤进行:1)1,3,5-三异丙基苯的催化过氧化,2)过氧化物还原成相应的醇,3)醇的甲基化。 通过控制关键过氧化步骤的转化,可以控制二官能和三官能中间体的相对比例。 通过使用1,3-二(2-甲氧基-2-丙基)-5-异丙基苯,可以合成明确定义的二甲氧基遥爪聚异丁烯。 尽管两种引发剂的总体组合产率仅为14-20%,但是由于原料成本低,使用的试剂和简单的操作,这些化合物代表了迄今为止制备遥爪聚异丁烯的成本最高的引发剂。
    • 9. 发明申请
    • BIOSYNTHESIS OF POLYISOPRENOIDS
    • 聚异戊二烯的生物合成
    • US20110201771A1
    • 2011-08-18
    • US12998516
    • 2009-11-05
    • Judit E. PuskasColleen McmahamAlain M. DeffieuxJoseph P. Kennedy
    • Judit E. PuskasColleen McmahamAlain M. DeffieuxJoseph P. Kennedy
    • C08F36/08C12P5/02
    • C08F136/08C08F36/04C08F4/00
    • The synthetic production of cis-1,4-polyisoprene and other cis-1,4-polydienes is achieved by adding isoprene or other diene monomers to a natural rubber latex or washed rubber particles and utilizing various allylic pyrophosphate compounds. The natural rubber latex or washed rubber particles inherently contain an enzyme catalyst and desirably divalent metal cofactors therein and the polymerization can occur over a relatively wide temperature range. The process is believed to be a living carbocationic polymerization. The in vitro produced natural rubber polymers can contain from about 5 to about 30,000 repeat units and are essentially free of non-enzyme catalysts. The invention can be utilized to synthesize polyisoprenoids and precursors to form terpenes, vitamins, steroids, alkaloids, and the like.
    • 通过将异戊二烯或其它二烯单体加入到天然橡胶胶乳或洗涤的橡胶颗粒中并利用各种烯丙基焦磷酸酯化合物来实现顺式-1,4-聚异戊二烯和其它顺式-1,4-聚二烯的合成生产。 天然橡胶胶乳或洗涤的橡胶颗粒固有地含有酶催化剂,并且其中优选二价金属辅因子,并且聚合可以在相对宽的温度范围内发生。 该方法被认为是活性碳阳离子聚合。 体外制备的天然橡胶聚合物可以含有约5至约30,000个重复单元,并且基本上不含非酶催化剂。 本发明可用于合成聚异戊二烯和前体以形成萜烯,维生素,类固醇,生物碱等。