| 摘要 |
PURPOSE:To control blotting and especially increase a range of choice with respect to paper variety usable in a plotter, by adding a particular amt. of a functional org. boron polymeric compd. to a water-based ink for use in an autograph pen, a ball-point pen, etc. CONSTITUTION:A functional org. boron polymeric compd. is added in an amt. of 1-5% to a water-based ink comprising a dye, a solvent, an activator, a bacterioproof agent, etc. Examples of said compd. include a product trade-named as Hiboron MCB-300 (a product of Boron International Co., Ltd.; active ingredient being registered under the provision of the Low concerning Screening of Chemical Substances and Regulation of their Manufacture). When writing is made on paper using this ink compsn., blotting can be controlled because this compd. forms a uniform film which is bonded to the cellulose molecules of the paper through hydrogen bonding.
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