POLYTHIOL COMPOUND MANUFACTURING METHOD, CURABLE COMPOSITION MANUFACTURING METHOD, AND CURED PRODUCT MANUFACTURING METHOD

Title:

POLYTHIOL COMPOUND MANUFACTURING METHOD, CURABLE COMPOSITION MANUFACTURING METHOD, AND CURED PRODUCT MANUFACTURING METHOD

Document Type and Number:

WIPO Patent Application WO/2018/030391

Kind Code:

A1

Abstract:

Provided is a polythiol compound manufacturing method including: obtaining a polyol compound represented by formula (1) by reacting 2-mercaptoethanol with 1.00-1.25 equivalent amount of epihalohydrin relative to 2-mercaptoethanol; and, subsequent to a step that includes obtaining a polyol compound represented by formula (2) by reacting the polyol compound represented by formula (1) with 1.04-1.25 equivalent amount of an alkali metal sulfide relative to the aforementioned 2-mercaptoethanol, obtaining one or more types of polythiol compounds selected from a group including a polythiol compound represented by formula (3), a polythiol compound represented by formula (4), and a polythiol compound represented by formula (5). Formula (1) [In formula (1), X represents a halogen atom] Formulas (2), (3), (4), (5)

Inventors:

KAGEYAMA YUKIO (JP)
KOUSAKA MASAHISA (JP)
OHNISHI TOMOFUMI (JP)

Application Number:

PCT/JP2017/028731

Publication Date:

February 15, 2018

Filing Date:

August 08, 2017

Export Citation:

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Assignee:

HOYA LENS THAILAND LTD (TH)
KAGEYAMA YUKIO (JP)
KOUSAKA MASAHISA (JP)
OHNISHI TOMOFUMI (JP)

International Classes:

C07C319/22; C07C321/14; C08G18/38; G02B1/04; G02B3/00; G02C7/00

Domestic Patent References:

WO2016052121A1

2016-04-07

Foreign References:

JPH07252207A	1995-10-03
JP2015520765A	2015-07-23
JP2004002340A	2004-01-08
JPH07252207A	1995-10-03
JPS5319037B2	1978-06-19
JP2009262480A	2009-11-12

Other References: