Title:
QUALITY CONTROL METHOD OF CURABLE COMPOSITION, AND CURABLE COMPOSITION
Document Type and Number:
Japanese Patent JP2018002988
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a quality control method of a curable composition forming an optical article containing ultramarine which can suppress variations in color tones for each lot.SOLUTION: A quality control method of a curable composition includes: a preparation step of preparing (C) a curable composition containing (A) ultramarine and (B) a polymerizable monomer component containing at least (B-1) a polymerizable monomer having an allyl group; a mixing step of taking out a part of (C) the curable composition prepared in the preparation step, and mixing 9 pts.mass of water with respect to 1 pts.mass of (C) the taken-out curable composition; and a measurement step of taking out the water mixed in the mixing step and measuring a pH of the water.SELECTED DRAWING: None
Inventors:
CHO KEIRAN
KANOFU KENICHIRO
TAKENAKA JUNJI
KANOFU KENICHIRO
TAKENAKA JUNJI
Application Number:
JP2016136314A
Publication Date:
January 11, 2018
Filing Date:
July 08, 2016
Export Citation:
Assignee:
TOKUYAMA CORP
International Classes:
C08F292/00; C08F2/44; G02C7/00