Thermoplastic polycarbonate composition having improved oxygen barrier
申请人:General Electric Company
公开号:US05110897A1
公开(公告)日:1992-05-05
High molecular weight, thermoplastic aromatic polycarbonate compositions exhibiting improved oxygen barrier properties are provided which comprise structural units derived from a diester bisphenol or a cyano-substituted bisphenol, or an aromatic dihydric phenol in admixture with either of the foregoing bisphenol compounds. Novel cyano-substituted bisphenol monomers are also provided.
Thermoplastic polycarbonate compositions having improved oxygen barrier properties
申请人:GENERAL ELECTRIC COMPANY
公开号:EP0406640A2
公开(公告)日:1991-01-09
High molecular weight, thermoplastic aromatic polycarbonate compositions exhibiting improved oxygen barrier properties are provided which comprise structural units derived from a diester bisphenol or a cyano-substituted bisphenol, or an aromatic dihydric phenol in admixture with either of the foregoing bisphenol compounds. Cyano-substituted bisphenol monomers are also provided.
Perfluorinated Sulfonate Resins as Reusable Heterogeneous Catalysts for the One‐Pot Synthesis of DiPhenolic Esters (DPEs)
作者:Francesco Pancrazzi、Giovanni Castronuovo、Giovanni Maestri、Ana Maria Constantin、Aleksandr Voronov、Raimondo Maggi、Paolo P. Mazzeo、Elena Motti、Daniele Alessandro Cauzzi、Rosanna Viscardi、Nicola Della Ca'
DOI:10.1002/ejoc.202201315
日期:2022.12.19
The synthesis of DPE, a valid candidate to replace bisphenol A, has been accomplished in good yield (78 %) and selectivity (87 %) by using Aquivion, a recyclable perfluorinated polymeric resins. The two step reaction, successfully applied to other alcohols and phenols, is carried out following a one-pot procedure and using phenols as solvent-reagent.
DPE 是替代双酚 A 的有效候选物,通过使用 Aquivion(一种可回收的全氟聚合物树脂)以良好的产率 (78%) 和选择性 (87%) 合成 DPE。成功应用于其他醇类和酚类的两步反应是按照一锅法并使用酚类作为溶剂试剂进行的。