The present invention relates to a water dispersion for ink-jet printing including two kinds of carbon blacks (a) and (b) and a water-insoluble polymer which adheres to a surface of the respective carbon blacks (a) and (b), wherein the carbon black (a) has an acid group content of from 0 to 200 μmol/g and the carbon black (b) has an acid group content of more than 200 μmol/g but not more than 1000 μmol/g, and a difference between acid group contents of the carbon blacks (a) and (b) is from 100 to 1000 μmol/g, and a water-based ink for ink-jet printing which contains the water dispersion. The water-based ink is excellent in image density, fixing property, high lighter fastness, image uniformity, ejection reliability and storage stability.

Water-based ink for ink-jet recording

There is provided a water-based ink for ink-jet printing which is excellent in optical density when printed on any of a high-water absorbing recording medium and a low-water absorbing recording medium, spreading of the dot size on the low-water absorbing recording medium, and rub fastness. The present invention relates to a water-based ink for ink-jet printing, including pigment-containing water-insoluble polymer particles A, water-insoluble polymer particles B, an organic solvent C and water, in which the water-insoluble polymer particles A are constituted of a water-insoluble polymer (a) including a constitutional unit derived from an ionic monomer, a constitutional unit derived from an aromatic ring-containing hydrophobic monomer and a constitutional unit derived from a specific hydrophilic nonionic monomer; the constitutional unit derived from the hydrophilic nonionic monomer is present in an amount of not less than 13% by mass and not more than 45% by mass on the basis of whole constitutional units in the water-insoluble polymer (a); the organic solvent C includes one or more organic solvents having a boiling point of 90° C. or higher in which a weighted mean boiling point of the organic solvent C which is weighted by contents (% by mass) of the respective organic solvents in the organic solvent C is 250° C. or lower; and a content of the organic solvent C in the water-based ink is not less than 20% by mass.

Water-based ink for inkjet recording

A water-based ink composition comprising (A) an aqueous medium; (B) at least one colorant selected from the group consisting of (i) polymer particles comprising a dye or pigment and a water-insoluble polymer, and (ii) a self-dispersible pigment; and (C) a specific compound A. The water-based ink composition is used for inkjet printing.

Water-based ink composition

The present invention provides a water-soluble film which comprises a modified polyvinyl alcohol containing an N-vinylamide monomer unit in an amount of 1 to 10 mole percent, and a carboxyl group and a lactone group in a total amount of 0.020 to 4.0 mole percent in the molecule, and having a degree of polymerization of 300 to 3000, and a degree of hydrolysis of 75 to 99.5 mole percent. Further, the present invention provides a package obtained by packaging an acidic substance, a chlorine-containing compound, or the like using the water-soluble film.

Water-soluble film and package using the same

A recording method is provided which comprises the step of providing an ink from a recording head to a recording medium through a gap provided between the recording head and the recording medium, the ink being supplied to the recording head from an ink tank which comprises an ink contact member and the ink contacting with the ink contact member, wherein the ink comprises (i) a fluorecent coloring material; (ii) a nonionic surfactant; (iii) a compound which is not compatible to (ii); and (iv) a liquid medium for dissolving or dispersing (i), (ii) and (iii), and wherein the ink contact member comprises at least one compound selected from the group consisting of polyacelate and polyolefin.

Recording method, ink cartridge, printing device and information recording apparatus

PROBLEM TO BE SOLVED: To obtain an ink being excellent in water resistance and improved in print density, stability, non-plugging properties and rubbing resistance of a print by including a water-soluble compound such as N-methylglycine, N,N,N- trimethylglycine or urea, an amino acid (salt) and a polymer emulsion. SOLUTION: This ink contains a substantially water-soluble compound of formula I, II or III (wherein R1 to R4 are each H, a 1-5C hydrocarbon group or an acyl; R is a 1-5C alkylene; and M is hydrogen, an alkali metal or an alkaline earth metal), at least one compound selected from amino acids (salts therof) and a polymer emulsion. It is desirable that the compound of formula I is N-methylglycine, the compound of formula II is N,N,N-trimethylglycine, and the compound of formula III is urea, for they have high water solubility. The amino acids are desirably β-alanine and alginine. The polymer emulsion used is a colored one.

Water-base ink for ink jet recording

PROBLEM TO BE SOLVED: To provide a process for producing a water-base ink for ink jet recording which improves the setting density of a print, exhibits improved fixing to a printing material, water resistance, and storage stability, and hardly causes scorching on a printer head. SOLUTION: Water, a neutralizing agent, and if necessary a surfactant are added to a soln. prepd. by dissolving a polymer having salt-forming groups and a hydrophobic dye in an amt. of 50-200 wt.% of the polymer in a water-soluble org. solvent to ionize the salt-forming groups in the polymer. The resultant mixture is emulsified, and the solvent is removed form the emulsion, thus giving an ink contg. a water-base dispersion of polymer particles contg. the dye sealed therein. COPYRIGHT: (C)1998,JPO

Production of water-base ink

PURPOSE:To obtain a separately packaged detergent comprising a film with excellent strength and water solubility and a detergent hardly caking by separately packaging a detergent composition having a specific absolute water amount and a specified amount of a nonionic surfactant with a specific water-soluble film. CONSTITUTION:(B) A detergent composition comprising B1: a surfactant composed of a nonionic surfactant as an essential component and B2: an crystalline or amorphous aluminosilicate, an inorganic salt such as carbonate and an auxiliary detergent builder such as sodium pyrophosphate is separated packaged with (B) a polyvinyl alcohol-based film having 10-150mum film thickness comprising A1: 100 pts.wt. polyvinyl alcohol modified with itaconic acid prepared by copolymerizing vinyl acetate with itaconic acid as essential monomers and saponifying and A2: 0.1-20 pts.wt. (co)polymer of a COOH-containing monomer (preferably acrylic acid or maleic acid) and/or is hydrate to give a separately packaged detergent having 90-3000 pts.wt. absolute water amount in the component B based on 100 pts.wt. of the film and 30-5,000 pts.wt. nonionic surfactant amount.

Separately packaged detergent using water-soluble film

PURPOSE: To prepare a two-pack type nail-beautifying agent free from malodor and flammafility and excellent in thee drying characteeristtics, luster, adhesive ness water resistance and abrasion resistance of coated films. CONSTITUTION: The two-pack type beautifying agent comprises a primer coating agent containing the emulsion of a vinylic polymer having a glass transition temperature of -20 to 60°C and a top coating agent containing the emulsion of a vinylic polymer having a glass transition temperature of 30 to 180°C. Each of the emulsions of the vinylic polymers is obtained by polymerizing one or more of polymerizable double bond-having monomers in the presence of a plasticizer or a film-forming auxiliary in water or in a solvent consisting mainly of water. The glass transition temperature of the vinylic polymer contained in the primer agent is lower by at least 10°C than the glass transition temperature of the vinylic polymer contained in the top coating. COPYRIGHT: (C)1995,JPO

Two-pack type nail-beautifying agent

PROBLEM TO BE SOLVED: To obtain paper or a nonwoven fabric having high surface strength and generating little powdery paper by compressing a web added with a binder to the width direction and forming a concentration gradient of the binder in the width direction after relaxing the pressure. SOLUTION: This production method of paper or a nonwoven fabric is to add a binder 17 comprising a foamy liquid of a self-crosslinkable acrylic resin, etc., to a web 12 having >=30% compressive recovery, compress the web 12 in the width direction with >=0.2 compression rate by two rollers 14 and 16 having the same or different contact angle against the binder solution 17, then relax the pressure and form a concentration gradient of the binder in the width direction of the web 12, succeedingly dry and heat treat the web 12 by a drying means 18 and obtain paper or the nonwoven fabric having the concentration gradient of the binder 17 in the width direction.

道隆澤田

Papers

Water-base ink for ink jet recording

Production of water-base ink

Separately packaged detergent using water-soluble film

Two-pack type nail-beautifying agent

Production of paper or nonwoven fabric

道隆 澤田

Papers

Water-base ink for ink jet recording

Production of water-base ink

Separately packaged detergent using water-soluble film

Two-pack type nail-beautifying agent

Production of paper or nonwoven fabric

道隆澤田