Patent ID: 6864353
Filing Date: 2005-03-08
Classification: C08G

Abstract:
1. A production process for an ethylene oxide copolymer, which comprises the step of carrying out polymerization of a monomer mixture under stirring in a solvent, thereby obtaining the ethylene copolymer, wherein the monomer mixture includes ethylene oxide and a substituted oxirane compound of a structural formula (1) below as essential raw materials, wherein the stirring is carried out by a stirring power of not less than 0.6 kW/m wherein the structural formula (1) is: where: R 1 denotes Ra (Ra is any group having 1 to 16 carbon atoms selected from among alkyl groups, cycloalkyl groups, aryl groups, aralkyl groups, (meth)acryloyl groups, and alkenyl groups) or a —CH 2 —O—Re—Ra group (Re has a structure of —(CH 2 —CH 2 —O) p — (p denotes an integer of 0 to 10))).