DEODORANT
    12.
    发明专利

    公开(公告)号:JP2002306583A

    公开(公告)日:2002-10-22

    申请号:JP2001116822

    申请日:2001-04-16

    Applicant: KAO CORP

    Abstract: PROBLEM TO BE SOLVED: To provide a deodorant which is low in its own odor and exhibits an excellent deodorization effect to the odors of amines, mercaptans and lower fatty acids. SOLUTION: At least one of the compounds selected from pyruvic acids, glyoxylic acids and their salts as well as the deodorant containing water and having a specific pH buffer capacity.

    INK JET RECORDING INK
    13.
    发明专利

    公开(公告)号:JPH11209671A

    公开(公告)日:1999-08-03

    申请号:JP1230598

    申请日:1998-01-26

    Applicant: KAO CORP

    Abstract: PROBLEM TO BE SOLVED: To improve the density of printed characters on a substrate by using an ink jet recording ink which comprises a pigemnt, a dispersant, a water-soluble medium, and monodispersive fine particles, the particle sizes and compounding ratio of the particles being selected so that the ratio of the area covered with the particles to the printed area is a specified value or higher. SOLUTION: The particle sizes and compounding ratio of the fine particles are selected so that the ratio of the area covered with the particles to the printed area is 50% or higher, still pref. 80% or highr, esp. pref. 90% or higher. Pref., the particles are inorg. particles, pref. silicon oxide such as colloidal silica, having particle sizes of 1-50 nm and are compounded in an amt. of 1-10 wt.% of the ink. Ths use of polymer particles, pref. melamine resin particles, having particle sizes of 100-300 nm and compounded in an amt. of 1-20 wt.% of the ink is also pref.

    INK FOR INK JET RECORDING
    14.
    发明专利

    公开(公告)号:JPH10298474A

    公开(公告)日:1998-11-10

    申请号:JP11319797

    申请日:1997-04-30

    Applicant: KAO CORP

    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 and phenolic compounds with formalin and neutralizing the condensate. SOLUTION: The aromatic compound mixture contains aromatic compounds represented by formula I (where R1 and R2 are each H or a 1-5C alkyl) and formula II (wherein R3 and R4 are each H or a 1-5C alkyl). Compounds of formula I are desirably dimethylnaphthalene, methylnaphthalene and butylnaphthalene. Compounds of formula II are particularly desirably cresol, xylenol, phenol and ethylphenol. The use ratio of the compound of formula I to the compound of formula II is desirably 1/3 to 1/15 by weight.

    INK JET RECORDING INK
    15.
    发明专利

    公开(公告)号:JPH10251575A

    公开(公告)日:1998-09-22

    申请号:JP6293197

    申请日:1997-03-17

    Applicant: KAO CORP

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject product excellent in dispersion stability thereof by using a carbon black specifying an oil absorption amount and a BET specific surface area. SOLUTION: This ink jet recording ink contains (A) a carbon black having 800-1000g/100g oil absorption amount based on DIN-ISO-787/5 and 250-500m /g BET specific surface area (suitably 50-1000nm mean particle diameter) in a powdery state, (B) a dispersing agent [suitably a condensation product of β- naphthalenesulfonic acid (salt) with formalin] and (C) a water soluble medium. It is preferable to contain 2-10wt.% component (A), and 0.5-5wt.% component (B) in the ink. As the component (C), water and the water soluble solvent, etc., can be used, but it is preferable to blend 0.1-15wt.% water soluble solvent and 85-95wt.% water. Further, it is preferable to blend 1-5wt.% dispersion improving agent such as an anionic surfactant, etc., together with the component (B). The ink preferably has pH10-12, and 1-10cps viscosity at 25 deg.C.

    INK FOR INK JET RECORDING
    16.
    发明专利

    公开(公告)号:JPH10251569A

    公开(公告)日:1998-09-22

    申请号:JP5663197

    申请日:1997-03-11

    Applicant: KAO CORP

    Abstract: PROBLEM TO BE SOLVED: To obtain an ink for ink jet recording excellent in dispersion stability of the ink without causing the clogging in a head by including a specific carbon black, a dispersing agent and a water-soluble medium therein. SOLUTION: This ink for ink jet recording comprises (A) a carbon black having 0-100ppm residue on a sieve based on the DIN ISO 787/18, 500-1,000g/100g volume of oil absorption and 150-500m /g BET specific surface area, (B) a dispersing agent such as a formalin condensate of β-naphthalenesulfonic acid (salt) or a copolymer of an acrylic or a methacrylic acid derivative in an amount of preferably 0.5-5wt.% (in the ink) and (C) a water-soluble medium such as ethylene glycol. The compounding ratio of the components A and B is preferably (8/2) to (8/8) of the components A/B expressed in terms of weight ratio.

    AQUEOUS PIGMENT INK
    17.
    发明专利

    公开(公告)号:JPH1060352A

    公开(公告)日:1998-03-03

    申请号:JP21762896

    申请日:1996-08-19

    Applicant: KAO CORP

    Abstract: PROBLEM TO BE SOLVED: To provide an aqueous pigment ink which affords improved fixative ability of a pigment for a material to be recorded thereon, particularly for an OHP sheet and the like, by using a polymer dispersant and a polyethyleneimine having a weight average molecular weight within a specific range in combination. SOLUTION: This aqueous pigment ink comprises a pigment, a polymer dispersant, a polyethyleneimine having a weight average molecular weight of 800 to 300,000 a water-soluble solvent and water. As the polyethyleneimine, a polyethyleneimine which is grafted, as a side chain, onto a main chain comprised of an acrylic chain, a polyethyleneimine which has been subjected to hydroxylation, an amphoterically ionized polyethyleneimine and the like are preferably used. It is preferred that a polyethyleneimine is compounded in the aqueous pigment ink in an amount of 0.01 to 10wt.%. The polymer dispersant is preferably a copolymer prepared from (meth) acrylic acid derivatives. This aqueous pigment ink is suitable especially for use in ink-jet recording.

    WATER-BASED PIGMENT INK
    20.
    发明专利

    公开(公告)号:JPH1046079A

    公开(公告)日:1998-02-17

    申请号:JP20742996

    申请日:1996-08-06

    Applicant: KAO CORP

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject ink good in pigment dispensability over a long period and under high-temperature storage by blending water with a pigment, a high molecular dispersant comprising a copolymer from an alkylene oxide- added (meth)acrylic acid derivative and a specific monomer and an anionic surfactant. SOLUTION: This water-based pigment ink excellent in pigment dispersion stability over a long period and under high-temperature storage, thus suitable for ink jet printing use, is obtained by blending water with (A) a pigment such as carbon black, (B) a high molecular dispersant comprising a copolymer from an alkylene oxide-added (meth)acrylic acid derivative of formula I (R1 and R2 are each H or a lower alkyl: (m1 ) is an integer of 0-2; AO is a 2-3C oxyalkylene group; (n) is an integer of 1-300; X is H or a lower alkyl) and a monomer of formula II [R3 to R5 are each H, a lower alkyl or of the formula (CH2 )m2 COOHM2 (M2 is H, an alkali metal, alkaline earth metal, ammonium, etc.; (m2 ) is an integer of 0-2); M1 is the same kinds as M2 ], and (C) an anionic surfactant such as an alkylbenzenesulfonate.

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