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发明名称
消除黑板用粉笔产生粉尘的方法
摘要
一种消除黑板用粉笔产生粉尘的方法,它是以水为溶媒把粉笔配制成液体形式,它可灌装在特制的笔中书写,且书写字迹由薄膜构成,可基本消除粉尘的污染。
申请公布号
CN1054994A
申请公布日期
1991.10.02
申请号
CN91102954.0
申请日期
1991.05.11
申请人
张劲
发明人
张劲
分类号
C09D13/00;B43K19/00
主分类号
C09D13/00
代理机构
代理人
主权项
1、一种消除黑板用粉笔产生粉尘的方法是在配制粉笔时加入水和颜料,其特征在于以水为溶煤,把粉笔配制成液体形式并加入水溶性成膜材料,脱膜剂,油水型乳化剂,水溶性防冻剂。
地址
063026河北省唐山市开滦荆各庄矿闭路电视台
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