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Title:
METHOD OF RECOVERING FORMALDEHYDE FROM POLYACETAL
Document Type and Number:
Japanese Patent JP2007070298
Kind Code:
A
Abstract:

To provide a method and an apparatus for recovering formaldehyde from polyacetal, in which formaldehyde can be recovered from polyacetal efficiently in a low temperature range.

Formaldehyde is recovered from polyacetal by dry-type heat decomposition of the polyacetal using a solid catalyst capable of producing a proton (H+). The solid catalyst capable of producing a proton (H+) is preferably a solid catalyst comprising a metal oxide subjected to acid treatment, or a proton (H+) exchange-type zeolite.


Inventors:
UENO AKISHI
ITO TOMOAKI
Application Number:
JP2005260554A
Publication Date:
March 22, 2007
Filing Date:
September 08, 2005
Export Citation:
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Assignee:
UNIV SHIZUOKA NAT UNIV CORP
International Classes:
C07C45/55; B01J21/06; B01J27/053; B01J27/16; B01J29/18; B01J29/40; B01J37/02; B01J37/08; C07C47/045; C08J11/16; C07B61/00; C08L59/00
Domestic Patent References:
JP2003119281A2003-04-23
JPS4986311A1974-08-19
JPS4523531B1
JP2006169282A2006-06-29
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda



 
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