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    PREPARATION OF WATER-BASE INK
    1.
    发明专利
    PREPARATION OF WATER-BASE INK 失效

    公开(公告)号：JPH11209666A

    公开(公告)日：1999-08-03

    申请号：JP1230498

    申请日：1998-01-26

    Applicant: KAO CORP

    Inventor： WAKABAYASHI SHIGEMI ,  ISHII MASUKAME ,  SUZUKI SHOICHI ,  TSUJII YOSHIAKI

    IPC: C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To obtain a water-base ink which does not gel even at high temps. by causing the surfaces of substantially water-insoluble fine particles to adsorb a polyalkylene glycol before or during mixing and dispersing a colorant, a dispersant, and the fine particles into a water-base medium. SOLUTION: The surface of at least one kind of fine particles selected from among particles of silcon oxide, titanium oxide, and aluminum oxide are caused to adsorb a polyalkylene glycol (e.g. polyethylene glycol) pref. having a wt. average mol.wt. of 2,000-20,000. After the fine particles are mixed and dispersed into the polyalkylene glycol to give a dispersion liquid contg. fine particles having adsorbed the polyalkylene glycol, a colorant (e.g. carbon black), a dispersant (e.g. a formaline condensate of a polynuclear arom. compd. sulfonate), and a water-soluble medium (e.g. diethylene glycol) are mixed and dispersed into the liquid, and the resultant colorant dispersion is further diluted with water to a specified concn., thus giving the objective water-base ink.

    INK SUPPLY CARTRIDGE
    2.
    发明专利
    INK SUPPLY CARTRIDGE 失效

    公开(公告)号：JPH11115205A

    公开(公告)日：1999-04-27

    申请号：JP28741097

    申请日：1997-10-20

    Applicant: KAO CORP

    Inventor： ISHII MASUKAME ,  MITOBE HIROYUKI ,  ITO HIDEKAZU ,  SATO SHINICHI

    IPC: B41J2/175

    Abstract: PROBLEM TO BE SOLVED: To make printing stable in printing density for a long period of time and excellent in water resistance, marker resistance and abrasion resistance by a method wherein water-base ink that is made of water-insoluble or water solution-resistant coloring material is used as water-base ink and hydrophilic porous body is used as ink-holding porous body. SOLUTION: An ink supply cartridge is formed, employing water-base ink that is made of water-insoluble or water solution-resistant coloring material as water-base ink and hydrophilic porous body as ink-holding porous body. For the hydrophilic porous body, such that is in 60-95% of porosity while being in 20-1000 μm of average pore size is suitable, and hydrophilic open cell porous body is more suitable. Coloring material that can be impregnated with polymer is usable as the water-insoluble or water solution-resistant coloring material. Dye or pigment such as, for instance, oil-soluble dye, disperse bye and the like can be listed as coloring material, and in view of satisfactory saturating property and adsorption property (sealing property), the oil-soluble dye and the disperse dye are especially suitable for use.

    INK FOR INK JET RECORDING
    3.
    发明专利
    INK FOR INK JET RECORDING 失效

    公开(公告)号：JPH10298478A

    公开(公告)日：1998-11-10

    申请号：JP11319897

    申请日：1997-04-30

    Applicant: KAO CORP

    Inventor： ISHII MASUKAME ,  TSUJII YOSHIAKI ,  SUZUKI SHOICHI ,  WAKABAYASHI SHIGEMI ,  SUZUKI ATSUSHI

    IPC: B41J2/01 ,  C09D11/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To obtain an ink excellent in long-term storage stability and environmental stability by forming an ink comprising a water-insoluble or difficulty water-soluble colorant, a dispersant and a water-soluble medium, wherein the dispersant is a polymeric dispersant obtained by condensing a sulfonate of aromatic compound mixture containing polynuclear aromatic compounds with formalin and neutralizing the condensate. SOLUTION: The polynuclear aromatic compounds used are desirably anthracene, phenanthrene, pyrene, acenaphthene and fluorene. The mixing ratio is desirably such that the colorant, the polymeric dispersant and the aqueous medium account for 2-10 wt.%, 0.5-10 wt.% and 80-97.2 wt.%, respectively. The fluid may optionally contain microparticles having a means primary particle diameter of 5-600 m. It is also desirable that the fluid contains polyethylene glycol. It is also desirable that the fluid contains a surfactant selected among nonionic and anionic surfactants.

    INK FOR INK JET RECORDING
    4.
    发明专利
    INK FOR INK JET RECORDING 失效

    公开(公告)号：JPH10298477A

    公开(公告)日：1998-11-10

    申请号：JP11319697

    申请日：1997-04-30

    Applicant: KAO CORP

    Inventor： ISHII MASUKAME ,  TSUJII YOSHIAKI ,  SUZUKI SHOICHI ,  WAKABAYASHI SHIGEMI ,  SUZUKI ATSUSHI

    IPC: B41J2/01 ,  C09D11/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To obtain an ink excellent in long-term storage stability and environmental stability by forming an ink comprising a water-insoluble or difficultly water-soluble colorant, a dispersant and a water-soluble medium, wherein the dispersant is a polymeric dispersant obtained by condensing a sulfonate of aromatic compound mixture containing alkyl naphthalenes with formalin and neutrlizing the condensate. SOLUTION: The aromatic compound mixture contains aromatic compounds represented by the formula (wherein R1 and R2 are each H or a 1-5C alkyl). Compounds of the formula are desirably dimethylnaphthalene, methylnaphthalene and butylnaphthalene. The mixing ratio is desirably such that the colorant, the polymeric dispersant and the aqueous medium account for 2-10 wt.%, 0.8-10 wt.% and 80-97.2 wt.%, respectively. The fluid may optionally contain microparticles having a means primary particle diameter of 5-600 nm. It is also desirable that the fluid contains polyethylene glycol and a surfactant selected among nonionic and anionic surfactants.

    PRODUCTION OF TABLET
    6.
    发明专利
    PRODUCTION OF TABLET 失效

    公开(公告)号：JPS61176519A

    公开(公告)日：1986-08-08

    申请号：JP1575685

    申请日：1985-01-30

    Applicant: KAO CORP

    Inventor： MATSUMOTO TADAO ,  ISHII MASUKAME

    IPC: A01N25/10 ,  A01N25/34 ,  A61K8/00 ,  A61K8/02 ,  A61K8/36 ,  A61K8/362 ,  A61K8/86 ,  A61Q19/10

    Abstract: PURPOSE:To obtain a tablet of a foamable composition storable stably until it is used by a consumer, by mixing an organic acid with polyethylene glycol in molten state, cooling and pulverizing the mixture, adding sodium (bi)carbonate thereto, and tableting the composition. CONSTITUTION:The objective tablet can be produced by mixing (A) 100pts.wt. of an organic acid essentially devoid of water of free from isolation of the water of crystallization at

    COLOR MATERIAL DISPERSION, INK FOR INK JET RECORDING AND INK JET RECORDING
    7.
    发明专利
    COLOR MATERIAL DISPERSION, INK FOR INK JET RECORDING AND INK JET RECORDING 失效

    公开(公告)号：JPH10251589A

    公开(公告)日：1998-09-22

    申请号：JP6295097

    申请日：1997-03-17

    Applicant: KAO CORP

    Inventor： ISHII MASUKAME ,  SAKUMA TADASHI ,  SUZUKI SHOICHI ,  TSUJII YOSHIAKI ,  SUZUKI ATSUSHI

    IPC: B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38 ,  C09D17/00

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject dispersion excellent in long-term storage stability and environmental stability by using a polymer dispersion obtained from a specific raw material as a dispersion. SOLUTION: This color material dispersion comprises (A) a water-insoluble or slightly water-soluble coloring material, (B) a polymer dispersion obtained by subjecting a sulfonated product obtained by sulfonating creosote oil to formalin condensation and neutralizing the condensed product and (C) a water-soluble medium. When concentrated sulfuric acid is used as the sulfonating agent in preparing the component B, creosote oil is charged into a reactor having an agitator and then, concentrated sulfuric acid is added thereto at 150-170 deg.C and sulfonation is preferably carried out for 1-2hr. Weight average molecular weight of the component B is preferably 2,000 to 50,000. It is preferable to include 15-30wt.% component A, 1.5-30wt.% component B and 50-83wt.% component C in the objective dispersion. The weight ratio of the components A/B is preferably (100/100) to (100/30). Pigment, oil-soluble dye, etc., is preferably used as the component A.

    PRODUCTION OF INK FOR INK JET RECORDING
    9.
    发明专利
    PRODUCTION OF INK FOR INK JET RECORDING 失效

    公开(公告)号：JPH1060331A

    公开(公告)日：1998-03-03

    申请号：JP21353596

    申请日：1996-08-13

    Applicant: KAO CORP

    Inventor： ISHII MASUKAME ,  SAKUMA TADASHI ,  YANAGI HIDEKI ,  SUZUKI SHOICHI ,  WAKABAYASHI SHIGEMI ,  TSUJII YOSHIAKI ,  AIDA KENJI

    IPC: C09D11/00 ,  C09D11/02 ,  C09D11/023 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/38

    Abstract: PROBLEM TO BE SOLVED: To obtain a process for producing an ink for ink jet recording whereby a pigment can be dispersed with an improved dispersibility into particles with uniform particle sizes by subjecting a pigment dispersion to ultrasonic treatment at specified output and frequency. SOLUTION: A pigment dispersion contg. a pigment, a polymeric dispersant, a water-soluble solvent, and water is subjected to ultrasonic treatment at an output of 250-3,000W and a frequency of 20-50kHz to disperse the pigment. The polymeric dispersant used id pref. a (meth)acrylic acid deriv. copolymer, esp, one obtd. by copolymerizing a monomer represented by formula I (R1 and R2 are each H or lower alkyl; m1 is 0-2; AO is 2-3C oxyalkylene; n is 1-300; and X is H or lower alkyl) and a monomer (including its acid anhydride) represented by formula II [R3 to R5 are each H, lower alkyl, or (CH2 )m2 COOM2 (wherein M1 and M2 are each H, an alkali or alkaline earth metal, ammonium, or an amine, and m2 is 0-2].

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