A process for the preparation of aromatic carboxylic acids or their salts comprises heating carboxyl-free aromatic compounds and aromatic carboxylic acid salts whose basic structures differ from those of the aromatic compounds, or heating polycyclic aromatic compounds with three or more rings and monocyclic or bicyclic aromatic carboxylic acid salts, under carbon dioxide pressure in the presence of one or more metal compounds selected from group (a) of compounds of zinc, cadmium, and thallium and one or more compounds selected from group (b) of compounds of cesium, Group II metals, and Group III a metals to effect the intermolecular transfer of the carboxyl groups.
The Synthesis of Phenanthrene and Hydrophenanthrene Derivatives. V. The Addition of Dienes to Cyclic α,β-Unsaturated Esters
作者:L. F. Fieser、H. L. Holmes
DOI:10.1021/ja01302a069
日期:1936.11
RESIN COMPOSITION AND MOLDED OBJECT THEREOF
申请人:Teijin Chemicals, Ltd.
公开号:EP1808461B1
公开(公告)日:2009-03-11
Resin Composition And Molded Articles Thereof
申请人:Yanagida Takatsune
公开号:US20080085955A1
公开(公告)日:2008-04-10
This invention seeks to provide a resin composition that can simultaneously satisfy resistances such as heat resistance and environmental resistance and moldability at high levels and that has excellent optical properties such as high refractivity and low birefringence and molded article thereof.
The present invention is a resin composition containing a polyester resin formed from a dicarboxylic acid component and a diol component (a) and a polycarbonate resin formed from a carbonate-forming component and a diol component (b), the diol component (a) containing a specific fluorene-containing compound and the diol component (b) containing a specific fluorene-containing compound.