Aromatic polyester containing phenolphthalein unit and bis-pheno

Details Aromatic polyester containing phenolphthalein unit and bis-pheno Aromatic polyester containing phenolphthalein unit and bis-pheno

1983-06-17

1985-05-28

Fan, Jane T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30778

Patent

active

045202087

ABSTRACT:
An aromatic polyester comprising two structural units represented by the following formulas A and B in a molar ratio of the structural unit A to the structural unit B being from 70:30 to 90:10 or four structural units represented by the following formulas A, B, C and D in a molar ratio of the total of the structural units A and C to the total of the structural units B and D being from 10:90 to 95:5 and the total of the structural units C and D being less than 50 molar %, and having a reduced viscosity .eta.sp/C of from 0.6 to 4 dl/g as measured at 30.degree. C. at a concentration of 1.0 g/dl in a solution of a mixture comprising phenol and tetrachloroethane in a weight ratio of 1:1, ##STR1##

REFERENCES:
patent: 4414366 (1983-11-01), Wu

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