Aromatic polyesters and polyester-carbonates having specific flu

Details Aromatic polyesters and polyester-carbonates having specific flu Aromatic polyesters and polyester-carbonates having specific flu

1991-01-15

1992-11-17

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528193, 528194, 528271, 528272, C08G 6300, C08G 6302, C08G 6304

Patent

active

051644746

ABSTRACT:
New aromatic polyesters and polyester-carbonates are prepared by the reaction of bisphenols of the formula ##STR1## wherein R.sup.3 and R.sup.4 independently of each other represent C.sub.1 -C.sub.4 alkyl group or a halogen atom, i and k denote zero or an integer 1 to 4, and X.sub.1 and X.sub.2 represent fluorine by the two-phase boundary process in an aqueous-alkaline phase with iso- or tere-phthaloyl dichloride. The polyesters and polyester carbonates according to the invention can be processed to form shaped articles by extrusion molding or in an extruder, applied in the form of solutions, or spun to fibers from melt or solution.

REFERENCES:
patent: 3438938 (1969-04-01), Oxenrider et al.
patent: 4985532 (1991-01-01), Pakull et al.
patent: 5025065 (1991-06-01), Tacke et al.
patent: 5041521 (1991-08-01), Serini et al.

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