The present invention relates to an electrochromic polymer compound composed of a hyperbranched polymer having electrochromic characteristics derived from a quaternary pyridinium salt, a terephthalic acid diester or a biphenyl-4,4′-diester structure, and a varnish, a thin film structure and an electrochromic device that are obtained by the polymer compound. The electrochromic material has high response speed, high coloring efficiency, and excellent repetition stability and can be used for a long time, and has excellent solubility in various solvents.
Improving the thermal properties of a polyalkyleneterephthalate without significant loss of physical and low temperature properties
申请人:AMOCO CORPORATION
公开号:EP0369734A2
公开(公告)日:1990-05-23
Polyalkyleneterephthalate blends containing about 3 and about 30 weight percent of a melt-processable polyarylate liquid crystal polymer, preferably containing an impact modifier, are shown to have significantly enhanced thermal properties while maintaining substantially the mechanical and low temperature properties of the polyalkyleneterephthalate. The blends are suitable for making molded objects such as permanent ovenware capable of repeated use in both conventional thermal and microwave ovens. A significant use of the polyethyleneterephthalate blends is in the thermoformable, CPET, dual-ovenable tray market.
[EN] INDUSTRIAL PREPARATION METHOD FOR ZIEGLER-NATTA CATALYST<br/>[FR] PROCÉDÉ DE PRÉPARATION INDUSTRIELLE POUR CATALYSEUR ZIEGLER-NATTA<br/>[ZH] Ziegler-Natta催化剂的工业制备方法