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1. 发明专利

JPH07145289A WATER-BASED PIGMENT COMPOSITION 失效
公开(公告)号：JPH07145289A
公开(公告)日：1995-06-06
申请号：JP31911793
申请日：1993-11-25
申请人： PENTEL KK
发明人： KATO AKIMITSU , KOBAYASHI YUICHI
IPC分类号： C08L33/04 , C09D5/06 , C09D167/00 , C09D167/02
摘要： PURPOSE:To provide a water-based pigment composition resistant to water, useful as a watercolor paint, poster color, etc., comprising a pigment, primer consisting of an acrylic alkali-soluble resin, thickening agent consisting of a specific acrylic copolymer, high-boiling water-soluble organic solvent and water. CONSTITUTION:The objective composition useful as a water-resistant watercolor paint or poster color, etc., comprising (A) a pigment (e.g. carbon black), (B) a primer consisting of an acrylic alkali-soluble and/or resin dispersion (e.g. acrylic acid-butyl acrylate copolymer ammonium salt), (C) a thickening agent consisting of a copolymer from acrylic acid and a 10-30C alkyl methacrylate (e.g. acrylic acid-dodecyl methacrylate copolymer), (D) a high-boiling water-soluble organic solvent (e.g. glycerin) and (E) water. This pigment composition seldom develops its phase separation with time, being slow in water-resistant film formation on the surface when provided on e.g. a pallet without delaying its dryability when applied.

2. 发明专利

JPH04189875A CORRECTION LIQUID 失效
公开(公告)号：JPH04189875A
公开(公告)日：1992-07-08
申请号：JP32012590
申请日：1990-11-22
申请人： PENTEL KK
发明人： KATO AKIMITSU
IPC分类号： C09D10/00
摘要： PURPOSE:To provide a correction liquid composed of a masking material, an organic solvent, a resin soluble in the solvent and a specific substance and having excellent rewritability free from the so-called 'color-sink phenomenon' comprising the thinning of written density in the case of rewriting on the corrected surface. CONSTITUTION:The objective correction liquid is at least composed of preferably 20-50wt.% of a masking material (preferably titanium oxide), preferably 30-60wt.% of an organic solvent (preferably having a boiling point of 70-150 deg.C), preferably 5-20wt.% of a resin soluble in the solvent (e.g. acrylic resin) and preferably 0.1-1wt.% of a compound of formula (X is amino, OH or nitro) (e.g. p-hydroxybenzoic acid).

3. 发明专利

JPH08231896A WATER-BASED PIGMENT COMPOSITION 失效
公开(公告)号：JPH08231896A
公开(公告)日：1996-09-10
申请号：JP6333395
申请日：1995-02-27
申请人： PENTEL KK
发明人： KATO AKIMITSU
IPC分类号： C09D5/06 , C09D133/04 , C09D133/08
摘要： PURPOSE: To obtain a water-based pigment compsn. decreased in obnoxious smell and freed from any viscosity increase with the lapse of time by blending a pigment with an acrylic ester emulsion, a high-boiling water-soluble org. solvent, tetrahydro-p-oxazine and water. CONSTITUTION: The compsn. comprises at least a pigment, an acrylic ester emulsion, and water. The pigment is used as a colorant. The acrylic ester emulsion imparts a water resistance to applied coating, and is also used as a vehicle. The water-soluble solvent is used as a freeze inhibitor, a drying time regulator, etc. The tetrehydro-p-oxazine is used for the purpose of decreasing the obnoxious smell of the acrylic ester to mitigate the smell of the pigment compsn., and preventing the compsn. from increasing in viscosity with the lapse of time and gelling.

4. 发明专利

JPH04225078A CORRECTING SOLUTION 失效
公开(公告)号：JPH04225078A
公开(公告)日：1992-08-14
申请号：JP41667390
申请日：1990-12-27
申请人： PENTEL KK
发明人： ONUKI TAKESHI , KATO AKIMITSU , KOBAYASHI YUICHI
IPC分类号： C09D10/00
摘要： PURPOSE:To obtain a correcting solution having slight color fading of holograph and excellent rewriting properties in use of aqueous ink, comprising an opacifying agent, an organic solvent, a resin soluble in the solvent and magnesium oxide, etc. CONSTITUTION:The objective correcting agent comprising (A) preferably 20-50wt.% opacifying agent, (B) preferably 30-60wt.% organic solvent such as n-heptane or cyclohexane having preferably 40-150 deg.C boiling point, (C) preferably 5-20wt.% resin such as acrylic resin or alkyd resin soluble in the component A and (D) preferably 0.1-10.0wt.% one or more compounds selected from magnesium oxide, a coprecipitated aluminum hydroxide magnesium hydroxide and magnesium silicate.

5. 发明专利

JPH10212428A BLACK PIGMENT COMPOSITION 失效
公开(公告)号：JPH10212428A
公开(公告)日：1998-08-11
申请号：JP2955997
申请日：1997-01-29
申请人： PENTEL KK
发明人： KATO AKIMITSU , KOBAYASHI YUICHI , YOSHIDA TAKASHI , SATO TOMIHIKO
IPC分类号： C09C3/10 , C09D5/06
摘要： PROBLEM TO BE SOLVED: To obtain a black pigment composition excellent in blackness and exhibiting no gelation with the lapse of time. SOLUTION: This black pigment composition comprises 10-40wt.% of aniline black, 5-20wt.% of a water-soluble polymer such as gum arabic, carboxymethyl cellulose or polyvinyl alcohol, 3-10wt.% of a wetting agent such as glycerol or ethylene glycol and water, wherein the content of a copper ion in this composition is

6. 发明专利

JPH107972A BLACK PIGMENT COMPOSITION 失效
公开(公告)号：JPH107972A
公开(公告)日：1998-01-13
申请号：JP18554096
申请日：1996-06-26
申请人： PENTEL KK
发明人： YOSHIDA TAKASHI , KATO AKIMITSU
IPC分类号： C09C1/48 , C09C3/08 , C09C3/10 , C09D17/00
摘要： PROBLEM TO BE SOLVED: To obtain a black pigment composition nonproblematic in safety and capable of giving nonglossy films having excellent blackness when applied by using bone black in combination with acetylene black. SOLUTION: This composition is prepared by mixing 10-18wt.%, based on the total composition, (12-16 pts.wt. per 6 pts.wt. acetylene black) bone black (1) with 5-14wt.% acetylene black (2), 5-20wt.% natural, semisynthetic or synthetic water-soluble polymer (3) 3-10wt.% wetting agent (4) such as glycerol, ethylene glycol or sorbitol and water (5) as the main solvent and agitating the obtained mixture to form a dispersion.

7. 发明专利

JPH04164974A LIQUID ERASER 失效
公开(公告)号：JPH04164974A
公开(公告)日：1992-06-10
申请号：JP29341890
申请日：1990-10-30
申请人： PENTEL KK
发明人： YAMADA NORIO , KATO AKIMITSU
IPC分类号： C09D10/00
摘要： PURPOSE:To obtain a liquid eraser having an excellent adaptability to rewriting such that it is free from a color sinking phenomenon when rewriting is made on the surface treated therewith by mixing a masking agent, an organic solvent, a resin soluble in the organic solvent, and a dicarboxylic acid (anhydride). CONSTITUTION:A liquid eraser is obtained by mixing a masking agent (e.g. preferably titanium oxide), an organic solvent (e.g. xylene), a resin soluble in this solvent (e.g. acrylic resin), and a dicarboxylic acid and/or its anhydride (e.g. phthalic anhydride). It is a liquid eraser having an excellent adaptability to rewriting such that it is free from the so-called color sinking phenomenon, i.e., a decrease in the density of a writing, when rewriting is made on the film of the applied eraser with a marking pen, a ball point pen, a writing brush, etc., using a water-base ink.

8. 发明专利

JPH07102191A AQUEOUS PIGMENT COMPOSITION 失效
公开(公告)号：JPH07102191A
公开(公告)日：1995-04-18
申请号：JP26790693
申请日：1993-09-30
申请人： PENTEL KK
发明人： KATO AKIMITSU
IPC分类号： C09B67/46 , C08K5/00 , C08L101/00 , C09C3/10 , C09D5/06 , C09D17/00
摘要： PURPOSE:To provide an aqueous pigment composition little in the separation of a solvent on its storage for a long period, giving a good touch when coated, and good in the color development of a pigment. CONSTITUTION:An aqueous pigment composition comprises 10-50wt.% of a pigment such as Hansa yellow G or ultramarine blue, 5-30wt.% of a water-soluble polymer and/or a water-dispersible polymer such as gum arabic, dextrin, carboxymethyl cellulose, a water-soluble acrylic resin or an acrylic ester copolymer emulsion, a moistening agent such as ethylene glycol or glycerol, and 0.1-10wt.% of pectolite.

9. 发明专利

JPH06248221A INDIGO-BLUE PIGMENT COMPOSITION 失效
公开(公告)号：JPH06248221A
公开(公告)日：1994-09-06
申请号：JP6296093
申请日：1993-02-26
申请人： PENTEL KK
发明人： KATO AKIMITSU
IPC分类号： C09C1/28 , C09C3/08 , C09C3/10 , C09D5/06 , C09D17/00
摘要： PURPOSE:To provide an indigo-blue pigment composition of high chroma, miscible with other colors, useful for paints, poster colors, etc., comprising a coloring material composed of blue-color pigment and violet-color pigment, specific amorphous silica, a water-soluble polymer and wetting agent. CONSTITUTION:The composition comprising (A) a coloring material composed of (1) 3-30wt.% of a blue-color pigment stable at pH>=7 (e.g. copper phthalocyanine blue) and (2) 0.1-2wt.% of a violet-color pigment (e.g. dioxazine violet), (B) 0.5-10wt.% of amorphous silica

10. 发明专利

JPH1067963A WATER BASE FLUORESCENT PIGMENT COMPOSITION 失效
公开(公告)号：JPH1067963A
公开(公告)日：1998-03-10
申请号：JP24558696
申请日：1996-08-28
申请人： PENTEL KK
发明人： KATO AKIMITSU
IPC分类号： C09K11/02 , C09B67/46 , C09D5/06 , C09D133/00
摘要： PROBLEM TO BE SOLVED: To obtain a water base fluorescent pigment composition without thickening even stored at a high temperature and useful as a water-resistant poster color, etc., by containing an acrylic resin-based fluorescent pigment, an acrylic ester-based emulsion and water. SOLUTION: This composition contains (A) an acrylic resin-based fluorescent pigment, (B) an acrylic ester-based emulsion [e.g. an emulsion of a copolymer of an ester such as butyl methacrylate or a (meth)acrylate] and (C) water. As the component A, a composition obtained by mixing a pigment having strong fluorescence such as C.I. basic yellow 44 into a styrene-acrylonitrile-based copolymer is exemplified. Preferably, 10-40wt.% of the component A and 5-30wt.% of a solid fraction of the component B are mixed to the whole amount of the objective composition. A body pigment such as silicone oxide or an organic solvent such as sorbitol can be mixed in the composition, as necessary. A thickener such as carboxymethyl cellulose in an amount of 0.05-2wt.% based on the whole weight of the composition may be mixed.

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