Title:
異性体ジイソシアナトジフェニルメタン混合物の蒸留方法
Document Type and Number:
Japanese Patent JP4868717
Kind Code:
B2
Abstract:
Distillation of an isomeric mixture of diisocyanatodiphenylmethanes containing at least the 2,2'-, 2,4' and 4,4'-isomers is such that at least in one step a partitioned column is used.
Inventors:
Hans-Peter Shall
Ulrich Wolf
Bernd Terren
Ulrich Wolf
Bernd Terren
Application Number:
JP2004138421A
Publication Date:
February 01, 2012
Filing Date:
May 07, 2004
Export Citation:
Assignee:
Bayer MaterialScience AG
International Classes:
C07C265/14; C07C263/20
Domestic Patent References:
| JP58090540A | ||||
| JP50035142A | ||||
| JP53009750A | ||||
| JP5163231A | ||||
| JP11314002A | ||||
| JP2000140501A | ||||
| JP9299702A |
Attorney, Agent or Firm:
Samejima Mutsumi
Kyousei Tamura
Keiichi
Norihito Yamao
Genban Sanae
Kyousei Tamura
Keiichi
Norihito Yamao
Genban Sanae