Title:
ジアミン組成物、およびジイソシアネート組成物の調製方法
Document Type and Number:
Japanese Patent JP7126217
Kind Code:
B2
Abstract:
The diamine composition according to an embodiment of the present invention comprises a benzylmonoamine having a methyl group in an amount of 10 ppm to 2,000 ppm in the composition. When it is used for the preparation of a diisocyanate composition and an optical material, it is possible to improve the optical characteristics by preventing the occurrence of yellowing, striae, and cloudiness in the optical material and enhancing the mechanical properties such as impact resistance at the same time. In addition, in the process for preparing a diisocyanate composition according to another embodiment, the b* value according to the CIE color coordinate of a diamine composition is adjusted to a specific range, whereby it is possible to enhance not only the yield and purity of the diisocyanate composition but also the optical characteristics of the final optical lens. Thus, the process for preparing a diisocyanate composition can be applied to the preparation of a plastic optical lens of high quality.
Inventors:
Bae, Jaeyoung
Kim, Jung Mu
Han, Hyukhi
Myeong, Jung Hwan
John, Juyoung
Kyon, Myeongok
Kim, Jung Mu
Han, Hyukhi
Myeong, Jung Hwan
John, Juyoung
Kyon, Myeongok
Application Number:
JP2020199067A
Publication Date:
August 26, 2022
Filing Date:
November 30, 2020
Export Citation:
Assignee:
SKC CO., LTD.
WOORI FINE CHEM CO., LTD.
WOORI FINE CHEM CO., LTD.
International Classes:
C07C263/10; C07C265/14
Domestic Patent References:
| JP2009525303A | ||||
| JP2003026639A | ||||
| JP5246973A | ||||
| JP8034774A |
Foreign References:
| WO2006001298A1 | ||||
| WO2018190290A1 |
Attorney, Agent or Firm:
SK Patent Attorney Corporation
Akihiko Okuno
Hiroyuki Ito
Akihiko Okuno
Hiroyuki Ito
Previous Patent: stress management system
Next Patent: DIISOCYANATE COMPOSITION, PRODUCTION METHOD THEREOF AND OPTICAL MATERIAL USING THE SAME
Next Patent: DIISOCYANATE COMPOSITION, PRODUCTION METHOD THEREOF AND OPTICAL MATERIAL USING THE SAME