Method for decomposing polymer containing urethane linkage and/or urealinkage

摘要

PCT No. PCT/JP95/02647 Sec. 371 Date Aug. 20, 1996 Sec. 102(e) Date Aug. 20, 1996 PCT Filed Dec. 25, 1995 PCT Pub. No. WO96/20244 PCT Pub. Date Jul. 4, 1996In the decomposition of a polymer containing a urethane linkage and/or urea linkage in the presence of a decomposing agent, the amount of evolved carbon dioxide is measured and the decomposition reaction is conducted until a total amount of evolved carbon dioxide reaches a specified value to obtain a liquid decomposition product. According to the present invention, a decomposition product having constant quality can be obtained in a simple manner.