Intramolecular nucleophilic substitutions of co-ordinated aryl halides. A preparation of chromans
作者:Roy P. Houghton、Martyn Voyle、Raymond Price
DOI:10.1039/c39800000884
日期:——
3-(o-Fluorophenyl)propan-1-ol can be cyclised readily to chroman either through chromium tricarbonyl complexes or (as also with substituted fluorophenylpropanols) by the action of the (η6-benzene)(η5-ethyltetramethylcyclopentadienyl)rhodium(III) cation.
HOUGHTON R. P.; VOYLE M.; PRICE R., J. CHEM. SOC. CHEM. COMMUN., 1980, NO 18, 884-885
作者:HOUGHTON R. P.、 VOYLE M.、 PRICE R.
DOI:——
日期:——
RETARDATION FILM, METHOD FOR PRODUCING RETARDATION FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY
申请人:Yamada Rumiko
公开号:US20090169772A1
公开(公告)日:2009-07-02
Disclosed are a retardation film, a method for producing the retardation film, a polarizing plate comprising the retardation film, and a liquid crystal display comprising the polarizing plate. Specifically disclosed is a method for producing a retardation film, which comprises an extrusion step for extruding a composition containing a thermoplastic resin and having a temperature of To [° C.] from a die; a cooling step for cooling a film extruded from the die and having a glass transition temperature of Tg [° C.] to a temperature Ta [° C.]; a heating step for heating the cooled film to a temperature Tb [° C.] at least once; and a stretching step for cooling the heated film to a temperature Tc [° C.] and then stretching the cooled film in the width direction.