| abstract |
Thioether polyesters are prod. by reacting thioglycols of formula: R1 O - CH2 - CHR - SH (wherein R is H, alkyl, aryl or alkaryl, pref. H, Me or Ph and R1 is H(O-CH2-C-)n, n being 0-5000, pref. pref. 10-500) in molar ratio with unsatd. anhydrides pref. of maleic and/or tetrahydroxphthalic acid, at temps. of 30-100 degrees C opt. in the presence of an additional fluid medium and/or activators e.g. radical-releasing cpds. |