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OVERPRESSURE PEN PEN TYPE WRITER AND INK FOR SUCH A WRITER
OVERPRESSURE PEN PEN TYPE WRITER AND INK FOR SUCH A WRITER
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机译:超压笔型笔和这种笔的墨水
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摘要
A pressurized roller pen includes a thixotropic viscoelastic ink that is a gel at rest, but becomes a thin liquid under the shearing action of the pen's revolving ball-point, and comprises at least one polyelectrolyte polymer, at least one highly polar solvent, at least one solvent of low or medium polarity, and colloidal silica, together with pigments, dyes, surfactants and/or pH modifiers.
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