Title:
METHOD FOR PRODUCING PENTAMETHYLENE DIISOCYANATE AND APPARATUS FOR PRODUCING PENTAMETHYLENE DIISOCYANATE
Document Type and Number:
Japanese Patent JP2017031114
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing pentamethylene diisocyanate that can efficiently remove hydrolyzable chlorine and to provide an apparatus for producing pentamethylene diisocyanate by which the method for producing a pentamethylene diisocyanate is carried out.SOLUTION: A carbonyl chloride and a pentamethylene diamine is reacted to produce a reaction product including pentamethylene diisocyanate and hydrolyzable chlorine (reaction step); then the reaction product is subjected to heating treatment (heating treatment step); after that, the reaction product after subjected to heating treatment is distilled to purify the pentamethylene diisocyanate (purification step). In the heating treatment step, a tar component produced by distilling the reaction product in the purification step is introduced into the reaction product before subjected to heating treatment and the reaction product is heated.SELECTED DRAWING: Figure 1
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Inventors:
TAKAMATSU KOJI
SHIMAMOTO MASASHI
SHIMAMOTO MASASHI
Application Number:
JP2015154208A
Publication Date:
February 09, 2017
Filing Date:
August 04, 2015
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
C07C263/20; C07C263/10; C07C265/04
Domestic Patent References:
| JP2006069941A | 2006-03-16 | |||
| JP2010254764A | 2010-11-11 |
Foreign References:
| WO2012121291A1 | 2012-09-13 | |||
| WO2015016148A1 | 2015-02-05 |
Attorney, Agent or Firm:
Hiroyuki Okamoto