Aqueous ink for ball-point pen using oil-in-water type resin emulsion and ball-point pen using the aqueous ink

An oil-in-water type ballpoint pen technology, applied in the field of water-based ballpoint pens and inks for water-based ballpoint pens, can solve the problems of inability to write, low masking, low sunlight tolerance, etc., and achieves excellent drying properties and prevents ink from drying.

Inactive Publication Date: 2005-11-02
PILOT PEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The second problem is that because volatile ink is usually used, as long as the cap is removed and placed for a short time, it will also be impossible to write
However, since both dyes are used, the masking property is low, and there is a problem of little resistance to sunlight

Method used

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  • Aqueous ink for ball-point pen using oil-in-water type resin emulsion and ball-point pen using the aqueous ink
  • Aqueous ink for ball-point pen using oil-in-water type resin emulsion and ball-point pen using the aqueous ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Pigment black 7 5.0% by weight

[0052] Water-soluble resin (trade name: HPD-96)

[0053] Acrylic resin 4.0% by weight

[0054] Isopropanol (4.3kPa / 20°C) 5.0% by weight

[0055] Water 86.0% by weight

[0056] Anti-rust lubricant (trade name: A-215C) 0.5% by weight

[0057] Triethanolamine 1.0% by weight

[0058] Oil-in-water resin emulsion (trade name: Jion Clear 7001)

[0059] Acrylic emulsion 1.5% by weight

[0060] Wettability improver (trade name: Dynoll 604) 0.8% by weight

[0061] 1,2-Benzisothiazolin-3-one 0.2% by weight

[0062] Pigment Pigment Black 7 as a colorant, water as a solvent, and acrylic resin with a molecular weight of 16,500, a glass transition point of 102°C, and an acid value of 240 as a water-soluble resin that has both pigment dispersing function and handwriting fixing performance. Trade name In HPD-96 (manufactured by Johnspon Polymer Co., Ltd.), predetermined amounts of each component were accurately weighed, and the pigment was unifor...

Embodiment 2

[0064] The green pigment Pigment Green 7 used as a colorant, the styrene acrylic emulsion with a minimum film forming temperature of 15°C as a handwriting fixation and water resistance improver, trade name Jionclell 775 (manufactured by JionSompolima Co., Ltd.), except Except as shown in Table 1, operate in the same manner as in Example 1 to obtain inks for water-based ballpoint pens with green handwriting and appearance. In addition, for the product names HPD-96 and Jion Clear 775, consider the amount of effective solid content. design. In addition, the viscosity of the ink at 20° C. was 10.0 mPa·s.

Embodiment 3

[0066] As a handwriting fixation and water resistance improver, a vinyl acetate-based emulsion with a minimum film-forming temperature of 16°C or below, trade name Boncoat 2610 (manufactured by Dainippon Inki Chemical Industry Co., Ltd.), was used as a solvent at a vapor pressure of 20°C. Be the ethanol of 5.9kPa as alcoholic solvent, except as shown in table 1, operate similarly with embodiment 1, obtain handwriting, outward appearance all be the ink for water-based ball-point pen of green, in addition, for trade name HPD-96, ボンコ one ト2610, consider the amount of effective solids to design the ink. In addition, the viscosity of the ink at 20° C. was set to 15.0 mPa·s.

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Abstract

The problem is to provide ink for a ballpoint pen which enables to write well on a flat and smooth, and impermeable surface such as metal, glass, plastic material and the like and a ballpoint pen using this ink. Ink for an aqueous ballpoint pen, of viscosity in the range of 5 through 30 mPa.s at 20 DEG C. and using an oil-in-water type resin emulsion, including a solvent of water and alcohol-based solvent of 0.5 kPa to 10 kPa vapor pressure at 20 DEG C., pigment and water-soluble resin, with an aggregate concentration of solid contents of said water-soluble resin and oil-in-water type resin emulsion being 5.0 to 30.0 mass % against total composition of the ink, and a ballpoint pen using the ink.

Description

technical field [0001] The present invention relates to an ink for a water-based ball-point pen using an oil-in-water type resin latex and a water-based ball-point pen using the ink. Background technique [0002] As a writing stationery capable of writing on a permeable surface such as paper, a ballpoint pen is known in which a nib holding a freely rotatable ballball is inserted into the front end of an ink cartridge. [0003] On the other hand, as a writing instrument capable of writing on an impermeable surface such as metal, glass, plastic material, etc., a marker pen generally having a tip formed of a fiber bundle is known. Marking pens are roughly divided into water-based types using water-based solvents and oil-based types using oil-based solvents, and are widely used for writing bold characters and writing on the above-mentioned impermeable surface. However, there are two big problems with these markers. [0004] The first problem is that since the tip of the pen is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43K7/00C09D11/18
CPCC09D11/18F16K1/08F16K1/52F16K31/504
Inventor 大野贵史
Owner PILOT PEN CO LTD
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