Polycondensates which contain tartaric acid derivatives, process

Details Polycondensates which contain tartaric acid derivatives, process Polycondensates which contain tartaric acid derivatives, process

1992-05-21

1995-02-21

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528288, 528289, 528290, 528291, 528294, 528295, 528298, 528302, 528306, 528308, 5283086, 1286531, C08G 6944

Patent

active

053916964

ABSTRACT:
Polycondensates which contain tartaric acid derivatives, processes for their preparation and use thereof.
The invention relates to polycondensates which consist of at least 95 mol % of recurring structural units of the formula I ##STR1## where R.sup.1 is a 2,3-O-alkylidenetartaric acid derivative (II) or furo[2,5] (V), alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl or a heterocycle, X is --O--, --NH-- or --S-- and R.sup.2 is 2,3-O-alkylidene-L-threitol (III) or a compound of the formula VI, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl or a heterocycle, with the proviso that more than 5 mol % of the radicals R.sup.1 and/or R.sup.2 are present in the polycondensate of the formula I, where R.sup.1 is compound of the formula II or R.sup.2 is a compound of the formula III or R.sup.1 is a compound of the formula II and R.sup.2 is a compound of the formula III, or in which more than 5 mol % of the radicals R.sup.1 and R.sup.2 are present in the polycondensate of the formula I, where

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