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    • 7. 发明授权
    • Crayon and process for producing the same
    • 蜡笔和制作相同的过程
    • US08299143B2
    • 2012-10-30
    • US12439455
    • 2007-08-29
    • Kotaro SumitomoMasamitsu TakahashiHidetoshi Fukuo
    • Kotaro SumitomoMasamitsu TakahashiHidetoshi Fukuo
    • C09D13/00
    • C09D13/00
    • The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component and carbon black having a pH of not less than 5.0 in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.
    • 本发明提供一种使用亚苄基山梨糖醇胶凝剂与使用炭黑作为黑色颜料一起稳定地制备具有所需硬度的蜡笔的方法,而没有差的凝胶化。 该方法包括:在有机溶剂中溶解和分散pH为不低于5.0的树脂组分和炭黑,将至少一种选自二亚苄基山梨醇,三亚苄基山梨糖醇及其衍生物的胶凝剂溶解在所得的下面 加热以制备原料溶液,将原料溶液倒入模塑容器中,并冷却和胶凝原料溶液。