发明名称 |
METHOD OF COLORING CELLULOSIC MATERIALS USING A CATIONIC PIGMENT DISPERSION |
摘要 |
A method of coloring a cellulosic material which includes a) dispersing pulped cellulosic material into water; and b) coloring the pulped cellulosic material by adding a cationic dispersion to the water, where the dispersion includes: (i) at least one pigment; (ii) water; and (iii) at least one acid salt of a styrene maleimide resin in an amount effective to disperse the pigment. The cationic dispersion may be prepared by (i) mixing, at 500 to 10,000 rpm, at least one pigment; water; and either (a) at least one acid salt of a styrene maleimide imide resin or (b) at least one styrene maleimide imide resin in combination with at least one weak acid, thereby forming a dispersion premix; (ii) milling the dispersion premix in a mixer filled with ceramic, metal or glass beads for a period of time sufficient to reduce pigment agglomerates to primary particles, thereby forming a nonstandarized dispersion; and (iii) standardizing the dispersion against a color standard by adding water. The resulting cationic dispersion can be used to color cellulosic materials such as cotton and paper. |
申请公布号 |
EP1412580(A1) |
申请公布日期 |
2004.04.28 |
申请号 |
EP20020734474 |
申请日期 |
2002.05.17 |
申请人 |
SUN CHEMICAL CORPORATION |
发明人 |
MOORE, JAMES;PERRY, CHARLES, W.;LABAZZO, JOSEPH, P.;RASMUSEN, HANS;THORSSON, JORN, R. |
分类号 |
D21H17/55;D21H17/56;D21H21/24;D21H21/28;D21H21/36;(IPC1-7):D21H21/28;D21H19/44;D06P1/06 |
主分类号 |
D21H17/55 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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