METHOD FOR COLORING RUSH

PURPOSE:To obtain a dyed rush excellent in light fastness by allowing a metal- containing complex dye to penetrate in the pith of the stalk of a rush decolored and cut at both ends thereof by a penetrant. CONSTITUTION:A rush cut at both ends thereof is put in an aqueous solution with pH4 containing...

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Bibliographische Detailangaben
Hauptverfasser:	HAMAMOTO YOSHITO, NANBA TOSHIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS NAILING OR STAPLING MACHINES IN GENERAL PERFORMING OPERATIONS PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR TRANSPORTING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a dyed rush excellent in light fastness by allowing a metal- containing complex dye to penetrate in the pith of the stalk of a rush decolored and cut at both ends thereof by a penetrant. CONSTITUTION:A rush cut at both ends thereof is put in an aqueous solution with pH4 containing 25g/l of sodium hypochlorite and adjusted to bath temp. of 55 deg.C in a bath ratio of 1:90 to be bleached for 1hr. This rush is washed with water and subsequently immersed in an aqueous solution containing 5% of sodium thiosulfate and again washed with water. The washed rush is added to a solution containing 5% of a metal-containing complex dye and 3cc/l of nonionic Taskantol being a penetrant in a bath ratio of 1:30 to be dyed and subsequently washed and dried to obtain the dyed rush. This dyed rush is excellent in light fastness and generates no fading over a long period of time.