发明名称 |
CRAYON AND METHOD FOR PRODUCING THE SAME |
摘要 |
<p>Disclosed is a method for stably producing a crayon having a desired hardness, wherein gelling failure of a raw material solution does not occur when a crayon is produced by using a benzylidene sorbitol gelling agent while using a carbon black as a coloring agent. Specifically, after dissolving and dispersing a resin component, a carbon black having a pH of less than 5.0 and an organic amine into an organic solvent, at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and their derivatives is dissolved thereinto while heating, thereby preparing a raw material solution. A crayon is obtained by injecting the raw material solution into a molding container, then cooling and gelling the solution therein.</p> |
申请公布号 |
WO2008029690(A1) |
申请公布日期 |
2008.03.13 |
申请号 |
WO2007JP66770 |
申请日期 |
2007.08.29 |
申请人 |
SAKURA COLOR PRODUCTS CORPORATION;SUMITOMO, KOTARO;TAKAHASHI, MASAMISTU;FUKUO, HIDETOSHI |
发明人 |
SUMITOMO, KOTARO;TAKAHASHI, MASAMISTU;FUKUO, HIDETOSHI |
分类号 |
C09D13/00 |
主分类号 |
C09D13/00 |
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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