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Title:
POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIALS
Document Type and Number:
WIPO Patent Application WO/2013/129460
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a catalyst for preliminary reaction and a preliminary reaction method, which are suitable for a composition that is obtained by adding a thiol compound and an isocyanate compound to an episulfide compound; and a polymerizable composition for optical materials, which is capable of preventing yellowing of an optical material which contains a composition that is obtained by adding a thiol compound and an isocyanate compound to an episulfide compound. The above-mentioned problem can be solved by a polymerizable composition for optical materials, which contains a thiourethane oligomer that is obtained by preliminarily reacting the whole or a part of a thiol compound and an isocyanate compound in a composition that contains an episulfide compound, the thiol compound and the isocyanate compound, while using a compound represented by formula (2) as a catalyst for preliminary reaction. (In formula (2), R represents an alkyl group having 1-4 carbon atoms; and X represents an organic group which has 2-11 carbon atoms and contains a vinyl group, a vinylidene group or a vinylene group.)

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Inventors:
KOSHIISHI EIJI (JP)
OKAZAKI HITOSHI (JP)
TAKEUCHI MOTOHARU (JP)
Application Number:
PCT/JP2013/055089
Publication Date:
September 06, 2013
Filing Date:
February 27, 2013
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C08G75/08; G02B1/04
Domestic Patent References:
WO2012147709A12012-11-01
Foreign References:
JP2007197615A2007-08-09
JP2004059901A2004-02-26
JP2005272785A2005-10-06
JPH11292950A1999-10-26
JP2001131257A2001-05-15
JP2001330701A2001-11-30
JP2007084629A2007-04-05
JPH10146849A1998-06-02
JP2007197615A2007-08-09
JP3465528B22003-11-10
JP3373800B22003-02-04
JP3589129B22004-11-17
JP3621600B22005-02-16
JP2007321072A2007-12-13
JP4291190B22009-07-08
Other References:
See also references of EP 2821428A4
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
Kobayashi 浩 (JP)
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