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AssigneesDIC Corporation, Green Earth Institute Co., Ltd.
InventorsAkihiro Kondo, Yasutaka Oka, Akane Sasamoto, Tatsuhiko Arai, Toru Nakayashiki, Satomi Miura
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Provided is an aspartic acid composition containing aspartic acid and an impurity, the impurity containing at least one selected from the group consisting of an amino acid other than aspartic acid, an organic acid, and salts of the amino acid other than aspartic acid and the organic acid, a content of the impurity being 0.02% by mass or more and 1.1% by mass or less. Also provided is a method for producing polysuccinimide, the method including performing a polymerization reaction of the aspartic acid using the aspartic acid composition. Also provided is a polysuccinimide composition produced by the method for producing polysuccinimide.
An aspartic acid composition comprising aspartic acid and an impurity,
A polysuccinimide composition comprising polysuccinimide and an impurity,
A polyaspartic acid composition comprising polyaspartic acid and an impurity,
Dependencies are inferred from the claim text.