- Patent Title: Process for producing episulfide compound for optical material, episulfide-containing composition, and polymerizable composition for optical material including the same composition
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Application No.: US15124906Application Date: 2015-03-11
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Publication No.: US10266636B2Publication Date: 2019-04-23
- Inventor: Hidetaka Tsukada , Masaru Kawaguchi
- Applicant: MITSUI CHEMICALS, INC.
- Applicant Address: JP Minato-Ku, Tokyo
- Assignee: MITSUI CHEMICALS, INC.
- Current Assignee: MITSUI CHEMICALS, INC.
- Current Assignee Address: JP Minato-Ku, Tokyo
- Agency: Buchanan, Ingersoll & Rooney PC
- Priority: JP2014-047890 20140311; JP2014-185995 20140912
- International Application: PCT/JP2015/057166 WO 20150311
- International Announcement: WO2015/137402 WO 20150917
- Main IPC: C08G18/38
- IPC: C08G18/38 ; G02B1/04 ; C08G18/73 ; C08G18/79 ; C08G18/02 ; B29D11/00 ; C08J5/00 ; G02C7/12 ; C07D331/02 ; C08G18/75 ; C08L75/04 ; C08L81/00 ; B29K75/00 ; B29K105/20
Abstract:
A process for producing an episulfide compound for an optical material of the present invention includes a step of chlorinating glycerin to obtain dichloropropanol; a step of epoxidizing the dichloropropanol to obtain epichlorohydrin; a step of reacting the epichlorohydrin with a sulfating agent to obtain a bis(chlorohydrin) (di)sulfide compound thought a thiol compound; a step of epoxidizing the bis(chlorohydrin) (di)sulfide compound under basic conditions to obtain an epoxy compound; and a step of reacting the epoxy compound with a sulfating agent to obtain an episulfide compound represented by following General Formula (1): wherein, in the formula, n represents 0 or 1.
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