Title:
ポリイソシアネート連続製造装置
Document Type and Number:
Japanese Patent JP4739798
Kind Code:
B2
Abstract:
An apparatus for continuously producing polyisocyanate is provided for quickly contacting polyamine and carbonyl chloride in order to suppress an undesirable reaction between polyamine and polyisocyanate so that a by-product can be reduced and the yield of polyisocyanate can be improved. In a circulatory line 7, a material-mixing portion 8, a high-shear pump 3, a reactor 4, a liquid-feeding pump 5 and a cooler 6 are interposed in series along the direction of the flow of a reaction solution, thereby forming a closed line. In this apparatus 1, after polyamine and carbonyl chloride are supplied in the material-mixing portion 8, the reaction solution is sheared by the high-shear pump 3 in a state where the contact of the polyamine with the reaction solution is minimized. Thus, the formation of a urea compound as a by-product can be suppressed and the yield of polyisocyanate can be improved.
Inventors:
Yuuki Sasaki
Kouyuki Maeba
Dozaki Mitsunaga
Hironori Takahashi
Osamu Hososaka
Kouyuki Maeba
Dozaki Mitsunaga
Hironori Takahashi
Osamu Hososaka
Application Number:
JP2005108590A
Publication Date:
August 03, 2011
Filing Date:
April 05, 2005
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C07C263/10; C07C265/14
Domestic Patent References:
| JP57048954A | ||||
| JP45001447B1 |
Foreign References:
| US3781320 |
Attorney, Agent or Firm:
Hiroyuki Okamoto