Title:
METHOD FOR PRODUCING PENTAERYTHRITOL MERCAPTOCARBOXYLIC ESTER, POLYMERIZABLE COMPOSITION, RESIN, OPTICAL MATERIAL, AND SPECTACLE LENS
Document Type and Number:
WIPO Patent Application WO/2023/190876
Kind Code:
A1
Abstract:
Provided are: a method for producing a pentaerythritol mercaptocarboxylic ester that comprises subjecting pentaerythritol and a mercaptocarboxylic acid to a dehydration reaction, the pentaerythritol having a light absorbance of 0.1 or higher at a wavelength of 270 nm in a 5 mass% aqueous solution of the pentaerythritol as measured using a quartz cuvette having an optical path length of 50 mm; a polymerizable composition that comprises the pentaerythritol mercaptocarboxylic ester; a resin that is a cured product of the polymerizable composition; an optical material that comprises the resin; and a spectacle lens that comprises the resin.
Inventors:
KOUSAKA MASAHISA (JP)
Application Number:
PCT/JP2023/013189
Publication Date:
October 05, 2023
Filing Date:
March 30, 2023
Export Citation:
Assignee:
HOYA LENS THAILAND LTD (TH)
KOUSAKA MASAHISA (JP)
KOUSAKA MASAHISA (JP)
International Classes:
C07C319/12; C07B61/00; C07C321/04; C08G18/38; C08G18/73; C08G18/75; C08G18/76; G02B1/04
Domestic Patent References:
| WO2016208707A1 | 2016-12-29 | |||
| WO2007052329A1 | 2007-05-10 |
Foreign References:
| JPH1180117A | 1999-03-26 | |||
| JP2011126822A | 2011-06-30 | |||
| JPS5711959A | 1982-01-21 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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