Patent ID: 8993687
Filing Date: 2015-03-31
Classification: C08G,C08L

Abstract:
1. A method for production of a biodegradable polyoxyethylene derivative, the method comprising causing a reaction of a biodegradable polyoxyethylene compound represented by formula (1) below: (in formula (1), Z represents a residue of a compound having 1 to 8 hydroxyl groups, m represents 1 to 2000, n represents 1 to 20, and k represents 1 to 8) and a compound represented by formula (I) below: (in formula (I), t represents 1 to 2) at 60° C. to 120° C. using toluene as a solvent in the presence of sodium acetate to obtain a biodegradable polyoxyethylene derivative represented by formula (2) below: (in formula (2), Z represents a residue of a compound having 1 to 8 hydroxyl groups, m represents 1 to 2000, n represents 1 to 20, k represents 1 to 8, and G represents a residue of the compound represented by formula (I), the residue being derived from the reaction).