Title:
POLYMERIZABLE COMPOSITION FOR POLYTHIOURETHANE-BASED OPTICAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2018/004217
Kind Code:
A3
Abstract:
Embodiments relate to a polymerizable composition for a polythiourethane-based optical material, the polymerizable composition enabling a high-quality polythiourethane-based optical material to be produced without complicated purification processes, by comprising a certain additive and appropriately adjusting the reactivity of isocyanate such that the viscosity can be maintained to be low for a certain period of time. In addition, the polythiourethane-based optical material of the embodiments has not only a uniform refractive index but also a low yellow index, and thus can be usefully used for various plastic optical lenses such as lenses for eyeglasses, camera lenses, etc.
Inventors:
HONG SEUNG MO (KR)
MYUNG JUNG HWAN (KR)
SEO HYEON MYEONG (KR)
SHIN JUNGHWAN (KR)
MYUNG JUNG HWAN (KR)
SEO HYEON MYEONG (KR)
SHIN JUNGHWAN (KR)
Application Number:
PCT/KR2017/006717
Publication Date:
February 22, 2018
Filing Date:
June 26, 2017
Export Citation:
Assignee:
SKC CO LTD (KR)
International Classes:
C08G18/52; C07C321/14; C08G18/38; C08G18/50; C08K5/521; C08L75/04; G02B1/04; G02C7/02
Foreign References:
| JP2006265402A | 2006-10-05 | |||
| KR20110003404A | 2011-01-11 | |||
| KR20120107889A | 2012-10-04 | |||
| KR20120100825A | 2012-09-12 | |||
| KR20120059634A | 2012-06-08 |
Other References:
See also references of EP 3480233A4
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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