Title:
MONOMERIZATION OF POLYETHYLENE TEREPHTHALATE
Document Type and Number:
Japanese Patent JP3652895
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To readily enlarge a reactor by advancing a reaction in a homogenous phase since in a conventional method, the reaction is partially or wholly made into two or more phases, the security of the contact of these phases is needed and the enlargement of the reactor is a problem.
SOLUTION: This monomerizaton method is a method for thermally depolymerizing a polyethylene terephthalate in a homogenous phase consisting of the polyethylene terephthalate, dimethyl terephthalate and methanol under a pressure at which methanol can exist in a liquid phase. Methanol is additionally added during the advance of the depolymerization.
Inventors:
Nobuo Ishihara
Kawamura Wataru
Takashi Miyake
Takeshi Mitsui
Kiyonori Nishida
Kawamura Wataru
Takashi Miyake
Takeshi Mitsui
Kiyonori Nishida
Application Number:
JP24269798A
Publication Date:
May 25, 2005
Filing Date:
August 28, 1998
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
C08J11/24; C07C69/82; (IPC1-7): C07C69/82
Domestic Patent References:
| JP9118639A | ||||
| JP8225496A | ||||
| JP6211971A | ||||
| JP5507910A |
Foreign References:
| US5414022 |
Attorney, Agent or Firm:
Nao Okuyama
Arihara Koichi
Shoichi Okuyama
Arihara Koichi
Shoichi Okuyama