Method for decomposing polymer containing urethane linkage and/or urealinkage
AssigneesSumitomo Bayer Urethane Co., Ltd., Toyota Jidosha Kabushiki Kaisha
InventorsYuji Hoshino, Takaaki Masuda, Hiroshi Ikuta, Hisao Mitobe
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Abstract
In 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.
Claims6
A method for decomposing a polymer containing a urethane linkage and/or urea linkage in the presence of a decomposing agent, comprising measuring an amount of evolved carbon dioxide and conducting a decomposing reaction until the total amount of evolved carbon dioxide reaches at least 60% of a maximum evolved carbon dioxideount to give a liquid decomposed material.
Dependencies are inferred from the claim text.