Shaped material comprising denatured chitin and process for preparing same
AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorJunichi Koshugi
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Abstract
A shaped material at the least of which surface layer comprises a denatured chitin obtained by acylation of de-N-acetylated etherified chitin represented by the following general formula: [C.sub.6 H.sub.8 O.sub.3 (NH.sub.2).sub.x (NHCOCH.sub.3).sub.y (OR).sub.a (OH).sub.b ].sub.n wherein R represents a carboxyalkyl group with two to four carbon atoms, a hydroxyethyl group, a hydroxypropyl group, a dihydroxypropyl group or an alkyl group with one to three carbon atoms, x is a number of 0.1 to 1.0, y=1.0-x, a is a number of 0.1 to 1.0, and b=1.0-a, or a salt thereof.
Claims40
A shaped material having a surface layer which consists essentially of a denatured chitin obtained by acylation of de-N-acetylated and etherified chitin represented by the following general formula (1):
- [C.sub.6 H.sub.8 O.sub.3.(NH.sub.2).sub.x.(NHCOCH.sub.3).sub.y.(OR).sub.a.(OH).sub.b ].sub.n ( 1)
- wherein R represents a carboxyalkyl group with two to four carbon atoms, a hydroxyethyl group, a hydroxypropyl group, a dihydroxypropyl group or an alkyl group with one to three carbon atoms, x is a number of 0.1 to 1.0, y=1.0-x, a is a number of 0.1 to 1.0, b=1.0-a, and n is the degree of polymerization
- or a salt thereof and having an interior which consists essentially of the de-N-acetylated and etherified chitin of the formula (1) or a salt thereof.
A shaped material consists essentially of a denatured chitin obtained by acrylation of a de-N-acetylated and etherified chitin represented by the following general formula:
- [C.sub.6 H.sub.8 O.sub.3.(NH.sub.2).sub.x.(NHCOCH.sub.3).sub.y.(OR).sub.a.(OH).sub.b ].sub.n
- wherein R represents a carboxyalkyl group with two to four carbon atoms, a hydroxyethyl group, a hydroxypropyl group, a dihydroxypropyl group or an alkyl group with one to three carbon atoms, x is a number of 0.1 to 1,0, y=1.0-x, a is a number of 0.1 to 1.0 b=1.0-a, and n is the degree of polymerization
- or a salt thereof.
A shaped material at least the surface of which layer comprises a denatured chitin obtained by acylation of a de-N-acetylated and etherified chitin having at least two kinds of substituents selected from the group consisting of a carboxyalkyl group with two to four carbon atoms, a hydroxyethyl group, a hydroxypropyl group, a dihydroxypropyl group or an alkyl group with one to three carbon atoms in the molecule thereof.
Dependencies are inferred from the claim text.