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PROCESS FOR GRANULATING POLYETHYLENE OXIDE

IP.com Disclosure Number: IPCOM000018940D
Publication Date: 2003-Aug-21

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Abstract

Lump formation of polyethylene oxide upon contact with water can be reduced or eliminated when the granulation is carried out in the presence of a salt comprising a polyvalent anion at a concentration of from 0.1M to 10M in a liquid diluent which comprises (i) from 10 to 100 weight percent of water and (ii) from 90 to 0 weight percent of a protic organic solvent. Preferred inorganic salts are potassium carbonate, potassium phosphate, sodium sulfate, potassium sulfate, sodium carbonate or sodium phosphate. The granulation is preferably carried out in water.