Daicel Chemical Industries, Ltd.

Hajime Namikoshi

Tohru Shibata

Ichiro Okamoto

Yoshio Okamoto

Koichi Hatada

Yoshiaki Okumura

Shoji Watanabe

Kiyoshi Okitsu

Kazuo Notsu

Kenji Tsuda

Masahiro Asami

Masatoshi Mikumo

Tsuyoshi Sei

Takeo Ohmiya

Tatsuo Goto

Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.

Separation agent comprising acyl- or carbamoyl-substituted polysaccharide

A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of optical isomers.

Separation agent comprising aliphatic or aromatic ester of polysaccharide

Separation agent comprising acyl-or carbamoyl-substituted polysaccharide

A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of opticl isomers.

Separating with an agent comprising an aliphatic ester of a

Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between in atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.

Optical resolution with .beta.-1,4-xylan dibenzoate

Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substitutent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.

1,3-glucan is effective to separate a compound from a mixture containing the same, in particular for the optical resolution.

Separation agent comprising 1,3-glucan

Separating with an agent comprising aliphatic ester of polysaccharide

Optical resolution with .beta.-1,4-mannan tribenzoate

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Himeji, Japan

Hajime Namikoshi