MICROPOROUS COORDINATION COMPLEX AND METHOD OF MAKING THE SAME
申请人:Matzger Adam J.
公开号:US20140234624A1
公开(公告)日:2014-08-21
Disclosed herein is a three-dimensional coordination complex that includes a plurality of inorganic centers; a plurality of a first bis(bidentate) linker; and a plurality of a second bis(bidentate) linker, where the first and the second bis(bidentate) linkers are have different lengths, and the bidentate binding sites on each linker face in opposite directions on an axis.
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.
Copolyesters and molded articles comprising the same
申请人:KURARAY CO., LTD.
公开号:EP0774477A2
公开(公告)日:1997-05-21
Copolyesters consisting essentially of terephthalic acid units and ethylene glycol units, and further comprising 1 to 4 mole % of alicyclic or aliphatic bifunctional compound units (a1) or 0.5 to 7 mole % of bifunctional compound units (a2) derived from a specific aromatic diol or bifunctional compound units (a3) derived from a condensed ring or ring assembly type aromatic dicarboxylic acid, 0.005 to 1 mole % of multi-functional compound units (b1), and a specific amount of monofunctional compound units (c); copolyesters having a specific intrinsic viscosity and consisting essentially of terephthalic acid units and ethylene glycol units, and further comprising 0.5 to 7 mole % of the above bifunctional compound units (a2) and 0.005 to 1 mole % of specific multi-functional compound units (b2) or (b3); and
copolyesters consisting essentially of terephthalic acid units and ethylene glycol units, and further comprising 0.5 to 7 mole % of the above bifunctional compound units (a3) and 0.005 to 0.5 mole % of the multi-functional compound units (b1).
These copolyesters have excellent melt moldability, in particular extrusion blow moldability and give molded articles having excellent transparency, impact resistance, gelation characteristics, appearance, tactility, mechanical properties, heat resistance, chemical resistance and dimensional precision.