Sumitomo Bakelite Company Limited

Research Institute of Innovative Technology for the Earth

Ryuichi Murata

Daisuke Fujiwara

Yusuke Inoue

Kenya Tachibana

Hiroyuki Miyauchi

There is provided a water-soluble additive composition including a cyclic carboxylic acid, the water-soluble additive composition satisfying at least one of the following Conditions 1 to 4: (Condition 1) component (A) the cyclic carboxylic acid, which is other than the following component (B1), and component (B1) one or more selected from the group consisting of gallic acid and an ester thereof are included; (Condition 2) the total content of Na+ and NH4+ is equal to or more than 100 ppm and equal to or less than 5000 ppm with respect to the cyclic carboxylic acid; (Condition 3) the total inorganic ion content (excluding hydrogen ions and hydroxyl group ions) is equal to or more than 300 ppm and equal to or less than 5000 ppm with respect to the cyclic carboxylic acid; and (Condition 4) component (A) the cyclic carboxylic acid, which is other than the following component (B2), and component (B2) an amino acid are included.

Growing community of inventors

Tokyo, Japan

Ryuichi Murata