Title:
METHOD FOR PRODUCING POLYTHIOL COMPOUND, POLYMERIZABLE COMPOSITION AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/173820
Kind Code:
A1
Abstract:
The method according to the present invention for producing a polythiol compound comprises a step for reacting a compound represented by general formula (3) with sodium sulfide to give a polyalcohol compound represented by formula (4), and a step for reacting the polyalcohol compound represented by formula (4) thus obtained with a thia agent to give a polythiol compound, wherein the absorbance of a 17.3 wt% aqueous solution of the aforesaid sodium sulfide is not greater than 0.70 at a wavelength of 350 nm when measured using a quartz cell having an optical path length of 50 mm.
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Inventors:
TOKUNAGA KOICHI (JP)
KUMA SHIGETOSHI (JP)
SHIMAKAWA CHITOSHI (JP)
KUMA SHIGETOSHI (JP)
SHIMAKAWA CHITOSHI (JP)
Application Number:
PCT/JP2018/009391
Publication Date:
September 27, 2018
Filing Date:
March 12, 2018
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
C07C319/20; C01B17/36; C07C321/14; C08G18/38; G02B1/04; G02C7/00
Domestic Patent References:
| WO2014027428A1 | 2014-02-20 | |||
| WO2007129449A1 | 2007-11-15 | |||
| WO2007129450A1 | 2007-11-15 | |||
| WO2016208707A1 | 2016-12-29 |
Foreign References:
| JP2006284920A | 2006-10-19 | |||
| JPS6428207A | 1989-01-30 | |||
| JPS339126B1 | ||||
| JPH07252207A | 1995-10-03 | |||
| JPH02270859A | 1990-11-05 | |||
| JPH07252207A | 1995-10-03 | |||
| KR20120058635A | 2012-06-08 | |||
| JP2006284920A | 2006-10-19 | |||
| JP2017058787A | 2017-03-23 |
Other References:
See also references of EP 3604279A4
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
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