Ink composition for writing tool and writing tool
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United States of America Patent
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Nov 6, 2012
Grant Date -
Jun 3, 2010
app pub date -
Nov 25, 2009
filing date -
Dec 1, 2008
priority date (Note) -
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Abstract
The writing tool 100 having an ink composition for a writing tool 12 in an ink holding tube 14, the ink composition for a writing tool 12 containing a metal powder, a gelling agent and spherical resin fine particles, wherein the viscosity (V1) at a shear rate of 1000 s−1 is no greater than 45 mPa·s and the viscosity (V2) at a shear rate of 0.01 s−1 is at least 100 Pa·s.
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