Method of producing dyed polysaccharide:amino or imino starch derivative with reactive dye
AssigneeFuji Photo Film Co., Ltd.
InventorsHiroshi Shinoki, Mitsunori Ono
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Abstract
A method of producing a dyed polysaccharide which comprises linking a dye, capable of linking to amino group or imino group, to a starch derivative having a glucose derivative unit shown in a general formula [I] as a partial structure of the starch derivative. ##STR1## In the formula [I], R represents an arylene group or an alkylene group, R.sub.1, represents hydrogen atom or an alkyl group, and X and Y represent linking portions to other portions of the starch molecule, respectively. According to the method of the invention, dyed polysaccharides can readily be obtained by using a commercial reactive dye at room temperature under neutral conditions.
Claims12
A method of producing a dyed polysaccharide which comprises linking a reactive dye, capable of linking to an amino group or imino group and having a sulfonyl chloride group, carbonyl group, triazinyl group or vinyl sulfone derivative group to a starch derivative having a glucose derivative unit shown in a general formula as a partial structure of the starch derivative
- wherein R.sub.1 represents an arylene group or an alkylene group and R.sub.1 represents a hydrogen atom or an alkyl group.
Dependencies are inferred from the claim text.