Organic processes for manufacture of polyether-esters

Claim 1

PROCESS FOR THE MANUFACTURE OF A LINEAR AROMATIC POLYETHER ESTER CONTAINING PHENOXY OTHER LINKAGES, WHICH COMPRISES HEATING AT A TEMPERATURE OF 200*-300*C. UNTIL A POLYMER HAS BEEN FORMED A MIXTURE OF A CYCLIC CARBONATE OF AN ALKYLENE GLYCOL CONTAINING 2 TO 4 CARBON ATOMS IN THE MOLECULE WITH AT LEAST ONE COMPOUND SELECTED FROM THE GROUP WHICH CONSISTS OF DIHYDROXY PHENOLS IN WHICH THE HYDROXYL GROUPS ARE THE ONLY FUNCTIONAL GROUPS, MONOHYDROXY AROMATIC MONOCARBOXYLIC ESTERS IN WHICH THE HYDROXYL AND ESTERIFED CARBOXYL GROUPS ARE THE ONLY FUNCTIONAL GROUPS AND ARE SEPARATED BY 4 NUCLEAR CARBON ATOMS FOR EACH AROMATIC NUCLEUS IN THE ESTER AND THE ESTERIFYING GROUP IS A MONOFUNCTIONAL MONOHYDROXY COMPOUND OF BOILING POINT BELOW 200*C., AND DIESTERS OF CARBOXYLIC ACIDS IN WHICH THE ESTERIFIED CARBOXYL GROUPS ARE THE ONLY FUNCTIONAL GROUPS AND THE ESTERIFYING GROUP IS A MONOFUNCTIONAL MONOHYDROXY COMPOUND OF BOILING POINT BELOW 200*C., THE SELECTION BEING SO LIMITED THAT THE REACTING MIXTURE CONTAINS SUBSTANTIALLY EQUAL NUMBERS OF FREE PHENOLIC HYDROXYL AND ESTERIFIED CARBOXYL GROUPS, THE SAID MIXTURE CONTAINING 1-1,2 MOLECULES OF THE CYCLIC CARBONATE OF A GLYCOL FOR EACH PHENOLIC HYDROXYL GROUP.