US3117138A - - Google Patents

Claim 1

A PROCESS FOR THE PREPARATION OF PARTIAL GLYCIDYL ETHERS OF POLYOLS WHICH COMPRISES: MIXING A POLYOL HAVING AT LEAST TWO HYDROXYL G*ROUPS, BUT DEVOID OF FUNCTIONAL GROUPS OTHER THAN HYDROXYL GROPS, WITH EPICHLOROHYDRIN; HEATING AND REACTING THE POLYOL WITH A PORTION OF THE EPICHLOROHYDRIN AT A TEMPERATURE OF 50*C. TO 150*C. IN THE PRESENCE OF AN ALKALI METAL HYDROXIDE; THE MOLS OF EPICHLOROHYDRIN REACTING WITH SAID POLYOL BEING EQUIVALENT TO THE MOLS OF ALKALI METAL HYDROXIDE PRESENT, THE AMOUNT OF ALKALI METAL HYDROXIDE EMPLOYED BEING AT LEAST ONE MOL PER MOLD OF POLYOL BUT LESS THAN THE TOTAL NUMBER OF HYDROXYL GROUPS CONTAINED IN THE POLYOL, THE MOLS OF EPICHLOROHYDRIN BEIN IN EXCESS OF THE MOLS OF CAUSTIC, SAID AMOUNT BEN A AT LEAST A NUMBER OF MOLS EQUAL TO THE NUMBER OF HYDROXYL GROPS ON THE POLYOL AND SUFFICIENT TO ACT AS A SOLVENT FOR THE PARTIAL GLYCIDYL ETHER FORMED AND RECOVERING THE PARTIAL GLYCIDAL ETHERS FROM THE REACTION MIXTURE.