Aqueous metallic ink composition
AssigneeSakura Color Products Corporation
InventorsTomohiro Sawa, Yuki Yamamoto
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Abstract
An aqueous metallic ink composition comprising an aluminum powder pigment, a colorant, a polysaccharide, water, a water-soluble solvent and a material selected from a polyvinyl pyrrolidone, a polyethylene oxide or a compound thereof.
Claims30
An aqueous metallic ink composition comprising:
- a. aluminum powder pigment particles,
- b. a colorant,
- c. a polysaccharide,
- d. water
- e. a water-soluble solvent and
- f. a material selected from the group consisting of
- i. a polyvinyl pyrrolidone,
- ii. a polyethylene oxide and
- iii. a mixture thereof,
- wherein said material fixes said colorant on the surface of said aluminum powder pigment particles.
A double color aqueous metallic ink composition comprising
- a. aluminum powder pigment,
- b. a polysaccharide,
- c. water,
- d. a water-soluble organic pigment,
- e. a water-soluble organic solvent selected from the group consisting of
- i. an alcohol,
- ii a glycol, or
- iii. a glycol ether
- having a branched hydrophobic group
- f. a water-soluble dye,
- g. a material selected from the group consisting of
- i. a polyvinyl pyrrolidone,
- ii. a polyethylene oxide, or
- iii. a mixture thereof
- wherin said material fixes said water-soluble organic pigment to said aluminum powder pigment.
double-color aqueous metallic ink composition comprising a component of a central writing portion and a component of an outline writing portion around the said central writing, wherein aluminum powder pigment particles are contained with colored pigments bonded with polyvinyl pyrrolidone, polyethylene oxide or compounds thereof on the surface of said aluminum powder pigment particles, as the components of the said central writing portion.
A written mark of a double-color aqueous metallic ink composition comprising a central handwriting portion containing aluminum powder pigment particles with coloring pigments bonded with polyvinyl pyrrolidone, polyethylene oxide or compounds thereof on the surface of said aluminum pigment particles and an outline handwriting portion with coloring dyes contained around the said central handwriting portion.
A double-color aqueous metallic ink composition as set forth in clam 17 wherein said central writing portion is a first color and said outline handwriting portion is a second color.
A method for preparing an aqueous metallic ink comprising
- a. Priding a dispersion of an aluminum powder pigment in water and a water-soluble organic solvent,
- b. adding a material selected from the group consisting of
- i. a polyvinyl pyrrolidone,
- ii. a polyethylene oxide, or
- iii. a mixture thereof to said dispersion,
- c. charging a colorant, and
- d. mixing a polysaccharide,
- wherein said material fixes said colorant to said aluminum powder pigment.
A method for preparing a double-color aqueous metallic-ink comprising
- a. Priding a dispersion of an aluminum powder pigment in water and a water-soluble solvent material,
- b. adding a material selected from the group consisting of
- i. a polyvinyl pyrrolidone
- ii. a polyethylene oxide, or
- iii. a mixture hereof to said dispersion,
- c. adding a water-soluble dye,
- d. mixing a polysaccharide,
- e. adding a water-soluble solvent selected from the group consisting of
- i. an alcohol
- ii. a glycol or
- iii. a glycol ether having a branched hydrophobic group,
- wherein said material fixes said colorant to said aluminum powder pigment.
An aqueous metallic ink composition comprising:
- a. an aluminum powder pigment,
- b. a colorant,
- c. a polysaccharide,
- d. water
- e. a water-soluble solvent and
- f. a material selected from the group consisting of
- i. a polyvinyl pyrrolidone,
- ii. a polyethylene oxide and
- iii. a mixture thereof,
- wherein said material fixes said colorant to said aluminum powder pigment.
An aqueous metallic ink composition comprising:
- a. an aluminum powder pigment,
- b. a colorant,
- c. a polysaccharide,
- d. water,
- e. a water-soluble solvent, and
- f. a material selected from the group consisting of
- i. a polyvinyl pyrrolidone,
- ii. a polyethylene oxide and
- iv. a mixture thereof,
- wherein said polyethylene oxide has a number average molecular weight of 100,000-5,000,000 and the viscosity of the ink is 1,000-10,000 mpa·s (viscometer:
- ELD type viscometer, cone 3°R14 cone, rotation speed:
- 0.5 rpm, temperature:
- 20° C.).
An aqueous metallic ink composition comprising:
- a. an aluminum powder pigment,
- b. a colorant,
- c. a polysaccharide,
- d. water,
- e. a water-soluble solvent, and
- f. a material selected from the group consisting of
- i. a polyvinyl pyrrolidone,
- ii. a polyethylene oxide and
- iii. a mixture thereof,
- wherein said material fixes said colorant to said aluminum powder and said polyethylene oxide has a number average molecular weight of 100,000-5,000,000 and the viscosity of the ink is 1,000-10,000 mPa·s (viscometer:
- ELD type viscometer, cone 3°R14 cone, rotation speed:
- 0.5 rpm, temperature:
- 20° C.).
Dependencies are inferred from the claim text.