发明授权
- 专利标题： Ink backflow preventive for water-based ball-point pens
- 专利标题（中）： 水性圆珠笔的墨水防回流
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申请号： US11630951申请日： 2005-06-30
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公开(公告)号： US07905671B2公开(公告)日： 2011-03-15
- 发明人: Takeshi Omatsu , Hirokazu Matsuda , Hiroshi Inoue
- 申请人： Takeshi Omatsu , Hirokazu Matsuda , Hiroshi Inoue
- 申请人地址： JP Osaka-shi
- 专利权人： Sakura Color Products Corporation
- 当前专利权人： Sakura Color Products Corporation
- 当前专利权人地址： JP Osaka-shi
- 代理机构： Hamre, Schumann, Mueller & Larson, P.C.
- 优先权： JP2004-196292 20040702
- 国际申请： PCT/JP2005/012088 WO 20050630
- 国际公布： WO2006/003996 WO 20060112
- 主分类号： B43K7/08
- IPC分类号： B43K7/08
摘要：
The ink backflow preventive of the present invention contains at least refractory and/or involatile organic liquid substances and gelling agents, wherein the oil separation degree under the specific condition is prepared to be 1 to 15 %, in which as at least said gelling agents, styrene-based thermoplastic elastomer is contained and said styrene-based thermoplastic elastomer is composed of two or more of said styrene-based thermoplastic elastomer with the same molecular weight and with the different average molecular weight.
公开/授权文献
- US20070237569A1 Ink Backflow Preventive from Water-Based Ball-Point Pens 公开/授权日：2007-10-11
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