发明名称 ERASABLE COLORED PENCIL LEAD
摘要 Disclosed is an erasable colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, and a filler. The colored pencil lead composition may further include a lubricant. The colored pencil lead of the present invention produces marks on paper, which are easily erased by ordinary pencil eraser. Also disclosed are a process for using the colored pencil lead composition and a process for preparing a colored pencil lead.
申请公布号 CA2333071(C) 申请公布日期 2008.08.12
申请号 CA19992333071 申请日期 1999.06.22
申请人 BINNEY & SMITH INC. 发明人 LEIDNER, JACOB;HACKER, DAVID
分类号 B43K19/02;C09D13/00 主分类号 B43K19/02
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