Научно-исследовательский институт пластических масс им.Г.С.Петрова Научно-исследовательского объединения "Пластмассы"
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
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Abstract
FIELD: organic chemistry, esters of aromatic acids. SUBSTANCE: synthesis is carried out from bis-phenol of the general formula C(CH)(R), where R -;- H, Br and NaOH in water following by condensation with tere- or isophthalic acid chloroanhydride in the medium of organic solvent. Molar ratio of bis-phenol: NaOH: water = = 1: 1: (8,4-12,9). Process is carried out at 75-85 C up to preparing of homogeneous solution. After cooling of latter condensation in suspension of acid chloroanhydrides is carried out. Time of process is shortened by 2-15-times without sewage formation. Conversion of bis-phenol is increased by 3,4-8,2% . EFFECT: intensification of process, enhanced conversion of bis-phenol. 1 tbl
SU4066869/04A1986-05-131986-05-13Method of tere- or isophthalic acid esters synthesis
SU1363755A1
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