Title:
ISOCYANATE COMPOSITION WITH IMPROVED STABILITY AND REACTIVITY, AND OPTICAL LENS USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/132491
Kind Code:
A1
Abstract:
An embodiment relates to an isocyanate composition with improved stability and reactivity and a plastic optical lens using the same. The isocyanate composition has improved stability since the content of chlorine in the composition is adjusted to 22-500 ppm, and thus the isocyanate composition can prevent the deterioration in reactivity even in the long-term storage. Therefore, the isocyanate composition according to an example, even when used after long-term storage after preparation, can be prepared, through polymerization with a thiol-based compound, as a polythiourethane-based optical material with excellent physical properties, such as refractive index, Abbe number, transparency, glass transition temperature, and yellowness, and thus the isocyanate composition is useful in fields of glass lenses, a camera lens, and the like.
Inventors:
SHIN JUNGHWAN (KR)
MYUNG JUNG HWAN (KR)
HAN HYUK HEE (KR)
MYUNG JUNG HWAN (KR)
HAN HYUK HEE (KR)
Application Number:
PCT/KR2018/016621
Publication Date:
July 04, 2019
Filing Date:
December 26, 2018
Export Citation:
Assignee:
SKC CO LTD (KR)
International Classes:
C08G18/76; C07C263/18; C07C265/08; C08G18/64; C08K5/03; C08K5/07; G02B1/04
Foreign References:
| JPH0733851A | 1995-02-03 | |||
| KR20090082371A | 2009-07-30 | |||
| KR20150063573A | 2015-06-09 | |||
| US5728317A | 1998-03-17 | |||
| KR101842254B1 | 2018-03-27 |
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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