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Preparation method for shear-thinning water-based ball-point pen inks, shear-thinning water-based ball-point pen ink compositions, and ball-point pens employing the same
Preparation method for shear-thinning water-based ball-point pen inks, shear-thinning water-based ball-point pen ink compositions, and ball-point pens employing the same
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机译:剪切稀薄的水性圆珠笔墨水的制备方法,剪切稀薄的水性圆珠笔墨水组合物和使用该墨水的圆珠笔
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摘要
A shear-thinning water-based ball-point pen ink composition comprising from 1% by weight to 35% by weight of a colorant, from 2% by weight to 35% by weight of a water-soluble polar solvent, from 1% by weight to 30% by weight of a nonionic surface active agent having an HLB value within the range of from 8 to 12, and the balance being water and adjusting additives, and having a viscosity within the range of from 25 mPa.s to 160 mPa.s (a value at the number of revolution of 100 rpm in an EM type rotational viscometer, 25°C) and a shear thinning index within the range of from 0.1 to 0.6; the nonionic surface active agent having a mixed phase comprising a phase standing dispersed in the form of fine particles and a phase standing dissolved in a molecular state.;A method for preparing the ink composition and a ball-point pen employing the ink composition are also disclosed.
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