The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2009
Filed:
Mar. 24, 2005
Masaru Hidaka, Nara, JP;
Takaharu Nakagawa, Ikoma-gun, JP;
Toyoyuki Urabe, Ikeda, JP;
Tetsuya Maekawa, Amagasaki, JP;
Masaru Hidaka, Nara, JP;
Takaharu Nakagawa, Ikoma-gun, JP;
Toyoyuki Urabe, Ikeda, JP;
Tetsuya Maekawa, Amagasaki, JP;
Matsushita Electric Works, Ltd., Kadoma-shi, JP;
International Center for Environmental Technology Transfer, Yokkaichi-shi, JP;
Abstract
The present invention provides a method for decomposing a plastic so as to recycle useful substances therefrom as raw materials for a similar plastic. In particular, the present invention provides a method for decomposing a plastic, comprising the step of treating a thermosetting resin comprising a polyester and its crosslinking moiety, with subcritical water of a temperature lower than the thermal decomposition temperature of the thermosetting resin. According to the present invention, the thermosetting resin can be decomposed into a polyhydric alcohol, a polybasic acid and a compound comprising an acid residue derived from the polyester and a residue derived from the crosslinking moiety, without causing a random decomposition of the thermosetting resin.