Title:
A solution polymerization method of unsaturated polyester, and a recovery method of materials of unsaturated polyester using the solution polymerization method
Document Type and Number:
Japanese Patent JP6270100
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a depolymerization method of an unsaturated polyester which can be implemented easily and quickly at a low cost by using a simple apparatus, which does not require the use of a reaction catalyst, in particular, and which does not require a reaction solvent abiding in a supercritical or subcritical state.SOLUTION: The provided depolymerization method of an unsaturated polyester includes a step of depolymerizing an unsaturated polyester based on the irradiation thereof with microwaves in the presence of at least one type of alcohol selected from the group consisting of alkylene glycols, glycerin, and benzyl alcohol as a reaction solvent(s) under a pressure condition higher than normal pressure but not entailing a supercritical or subcritical state of the reaction solvent. It is permissible for the unsaturated polyester to be an unsaturated polyester included within a fiber-reinforced plastic (FRP).
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Inventors:
Kazutoshi Ikenaga
Application Number:
JP2013167476A
Publication Date:
January 31, 2018
Filing Date:
August 12, 2013
Export Citation:
Assignee:
Kimigafuchi Gakuen
Japan Maritime Examination Association
Japan Maritime Examination Association
International Classes:
C08J11/24; C08G64/40
Domestic Patent References:
| JP2010174249A | ||||
| JP2010185077A | ||||
| JP8225635A | ||||
| JP2009001734A | ||||
| JP2005097521A | ||||
| JP2007210889A | ||||
| JP5178977A |
Foreign References:
| WO2007066446A1 |
Attorney, Agent or Firm:
Patent corporation ssinpat