Method of modifying the dye affinity of cellulose fiber-containing structure with benzene sulfonyl chloride
AssigneeToppan Printing Co., Ltd.
InventorsTakahiro Fujiu, Masao Nakajima, Shigeru Okano
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Abstract
The method involves treating a cellulose fiber-containing structure with an alkaline agent, coating the structure with an acid chloride having the following formula: ##STR1## (wherein X is --H, --NO.sub.2, --CH.sub.3 or --SO.sub.2 Cl) and subjecting the resultant structure to heat treatment to cause chemical modification. The acid chloride is employed in the form of an emulsion in water. The emulsion may also contain a thickener such as a natural sizing agent or a dye. The method provides a more dyeable cellulose fiber-containing structure.
Claims9
A method of modifying the dye affinity of a cellulose fiber-containing structure, comprising the steps of treating a cellulose fiber structure or a mixed structure of a cellulose fiber and a synthetic fiber with an alkaline agent, coating the structure with an aqueous emulsion of an acid chloride having the formula:
- ##STR5## (wherein X is --H, --NO.sub.2, --CH.sub.3 or --SO.sub.2 Cl) and subjecting the coated structure to heat treatment prior to drying of the emulsion to cause chemical modification.
Dependencies are inferred from the claim text.