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1. 发明专利

JPH08243367A PRODUCTION OF POLYIMIDE COMPOSITE MEMBRANE 失效
公开(公告)号：JPH08243367A
公开(公告)日：1996-09-24
申请号：JP5247495
申请日：1995-03-13
申请人： DAINIPPON INK & CHEMICALS
发明人： TAKATAKE MASAYOSHI , NAGATA HIROTOMO , ANAZAWA TAKANORI
IPC分类号： B01D69/12 , B01D71/64 , B01D71/68
摘要： PURPOSE: To produce a hollow fiber composite membrane having a dense layer by co-extruding simultaneously a polyamic acid or polyisoimide dope forming a dense layer and a polymer dope forming a porous supporting layer into hollow fiber by using a multi-circular nozzle, then heating the obtained hollow fiber membrane or bringing the membrane into contact with a catalyst to convert the polyamic acid and the polyisoimide to polyimide. CONSTITUTION: A polyamic acid or a polyisoimide being a precursor of polyimide is excellent in fabrication property, especially in solubility to various kinds of solvents. Taking notice this property, the hollow fiber composite membrane is produced by co-extruding simultaneously the polyamic acid or polyisoimide dope forming the dense layer and the polymer dope forming the porous supporting layer into hollow fiber having a multilayer structure by using the multi-circular nozzle, coagurating the dope, and heating the obtained hollow fiber membrane or bringing the membrane into contact with the catalyst to convert the polyamic acid and the polyisoimide into polyimide. In such a case, the obtained composite membrane is substantially insoluble in the solvent and excellent in solvent resistance.

2. 发明专利

JP2003245994A DECORATIVE SHEET AND ITS MANUFACTURING METHOD 审中-公开
公开(公告)号：JP2003245994A
公开(公告)日：2003-09-02
申请号：JP2002047259
申请日：2002-02-25
申请人： DAINIPPON INK & CHEMICALS
发明人： OYA SATORU , NAGATA HIROTOMO , KAWARADA YUKIHIKO , YAMADA HIROFUMI , OTSUKA TAKAOMI
IPC分类号： C08J7/04 , B29C61/06 , B29K101/12 , B29K105/32 , B29L7/00 , B29L9/00 , B32B7/02 , B32B33/00
摘要： PROBLEM TO BE SOLVED: To provide a decorative sheet usable for various types of molding member products or particularly a sheathing member or the like for an automobile without bringing about a breaking fault of a coated film when the film is stretched by a face stretch ratio of 170% or more while the sheet has excellent scuff resistance, solvent resistance, chemical resistance and glossiness and to provide a method for manufacturing the same. SOLUTION: The decorative sheet comprises a transparent thermoplastic resin sheet, a thermoplastic resin sheet containing a coloring agent, an adhesive layer and a base sheet, sequentially laminated in this order so that a transparent cured resin layer is provided on the transparent thermoplastic resin sheet, and at least one of the transparent thermoplastic resin sheet and the thermoplastic resin sheet containing the agent has 0.1 to 1 MPa of a thermal shrinkage stress and weakly stretched in both directions MD and TD. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2002293814A METHOD FOR PRODUCING PRIMARY PARTICULATE 失效
公开(公告)号：JP2002293814A
公开(公告)日：2002-10-09
申请号：JP2001095785
申请日：2001-03-29
申请人： DAINIPPON INK & CHEMICALS
发明人： NAGATA HIROTOMO , TAKADA TETSUO
IPC分类号： C08F2/46 , C08F20/00 , C08F20/18 , C08F290/00 , C08F299/00
摘要： PROBLEM TO BE SOLVED: To provide a simple method for producing a resin particulate having a particle size of 1 μm or less. SOLUTION: The method for producing a primary particulate having a particle size of 1 μm or less, which comprises a polymer (B) obtained from a polymerizable compound (A) capable of polymerizing by the irradiation of an active ray, is characterized in that the ray is irradiated to a polymerization solution (I) containing a solvent (C) in an amount such that the polymer (B) is dispersed or emulsified in a reaction system. In the solution (I), the compound (A) as the first component and the solvent (C) as the second component, in which an absolute value difference in the solubility parameter with the compound (A) is 0.15-1.2 and the polymer (B) is not dissolved, are mixed homogeneously. The method is characterized in that a solvent (E) in which the polymer (B) is not dissolved is mixed after irradiating the ray to the polymerization solution.

4. 发明专利

JP2001162924A INK RECEIVING LAYER AND METHOD FOR MANUFACTURING THIS INK RECEIVING LAYER 失效
公开(公告)号：JP2001162924A
公开(公告)日：2001-06-19
申请号：JP34867599
申请日：1999-12-08
申请人： DAINIPPON INK & CHEMICALS
发明人： MURATA YOSHIAKI , TAKADA TETSUO , EBATO MAKIKO , NAGATA HIROTOMO
IPC分类号： B05D5/04 , B41M5/00 , B41M5/50 , B41M5/52 , C08F2/48 , C08J5/18 , C08J7/04 , C08J7/18
摘要： PROBLEM TO BE SOLVED: To provide a high-strength ink receiving layer with high voids which shows outstanding ink absorption (absorption rate and absorption capacity), water absorption properties (absorption rate and absorption capacity) and high ink color developing/fixing properties and further, high water resistance/high weatherability with the capability of realizing a print quality with extreme fineness. SOLUTION: This ink receiving layer comprises a filler composed mainly of a porous polymer member and a hydrophilic polymer compound formed on the surface of a sheetlike base material or on the surface of the sheetlike base material through an intermediate layer. In addition, the filler is packed in the voids of the porous polymer film.

5. 发明专利

JPH08323169A SURFACE-MODIFIED POLYIMIDAZOPYPROLONE SEPARATING MEMBRANE AND ITS PRODUCTION 失效
公开(公告)号：JPH08323169A
公开(公告)日：1996-12-10
申请号：JP13166195
申请日：1995-05-30
申请人： DAINIPPON INK & CHEMICALS
发明人： TAKATAKE MASAYOSHI , SUGANUMA TOSHIKAZU , NAGATA HIROTOMO
IPC分类号： B01D71/62
摘要： PURPOSE: To improve the gas permeability and gas selectivity of a separating membrane with a dense layer of polyimidazopyrrolone having a specified compsn. by chlorinating and fluorinating the surface of the dense layer. CONSTITUTION: A gaseous fluorine-chlorine mixture is brought into direct contact with the surface of a dense layer of polyimidazopyrrolone. When a hollow fiber membrane with a dense layer of polyimidazopyrrolone on the outer surface is treated, a gaseous fluorine-chlorine mixture is brought into contact with the outer surface of the dense layer. The polyimidazopyrrolone is a compd. obtd. by condensation-polymerizing one or more kinds of tetramines represented by formula I and one or more kinds of tetracarboxylic acid dianhydrides represented by formula II as principal components. The objective surface- modified gas separating membrane excellent in gas permeability and gas selectivity and having heat resistance and durability is obtd. This membrane is excellent especially in oxygen-hydrogen and hydrogen-methane separating performance without practically deteriorating hydrogen permeabiliy.

6. 发明专利

JPH08198964A GAS SEPARATION MEMBRANE OF POLYIMIDE 失效
公开(公告)号：JPH08198964A
公开(公告)日：1996-08-06
申请号：JP1251495
申请日：1995-01-30
申请人： DAINIPPON INK & CHEMICALS
发明人： TAKATAKE MASAYOSHI , NAGATA HIROTOMO
IPC分类号： B01D69/08 , B01D71/64 , C08G73/10
摘要： PURPOSE: To obtain a gas separation membrane of polyimide having a combination of high permeability, high separating performance, heat resistance and durability, and usable not only for gas-gas separation such as oxygen-nitrogen separation for the air, but also for pervaporation separation for volatile substance-mixed liquids, etc. CONSTITUTION: This separation membrane is such as to have a gas separation active layer consisting of a polyimide with a repeating unit of formula I (X is H or a lower alkyl group). The polyamide is obtained by polycondensation between tetracarboxylic acid dianhydride of formula II and a diamine of formula III. The specific examples of the diamine include 3,3'-dimethylnaphthidine, 2,2- bis[3.5-dibromo-4-(4-aminophenoxy)phenyl]propane, etc.

7. 发明专利

JP2002019308A IMAGING MATERIAL, ITS MANUFACTURING METHOD AND IMAGING ARTICLE 失效
公开(公告)号：JP2002019308A
公开(公告)日：2002-01-23
申请号：JP2000203608
申请日：2000-07-05
申请人： DAINIPPON INK & CHEMICALS
发明人： NAGATA HIROTOMO , TAKADA TETSUO
IPC分类号： B41M5/00 , B05D5/04 , B41M5/382 , B41M5/40 , B41M5/50 , B41M5/52 , B41M5/38
摘要： PROBLEM TO BE SOLVED: To provide an imaging article having excellent ink color developability, dyeability (fixability), not having a printing fault, having highly minute printing image quality and suppressing a heterogeneous shrinkage due to heating and a separation of an ink acceptive layer from a base. SOLUTION: The imaging article comprises the base and the ink acceptive layer having a porous structure, made of the same material and having the excellent ink color developability, the dyeability (fixability), not having the printing fault, having the highly minute printing image quality and suppressing the heterogeneous shrinkage due to heating and the separation of an ink acceptive layer with printability. A method for manufacturing the same is also provided.

8. 发明专利

JP2001293946A RECORDING MATERIAL AND MANUFACTURING METHOD FOR THE SAME 失效
公开(公告)号：JP2001293946A
公开(公告)日：2001-10-23
申请号：JP2000110658
申请日：2000-04-12
申请人： DAINIPPON INK & CHEMICALS
发明人： TAKADA TETSUO , NAGATA HIROTOMO , KOISO MIEKO
IPC分类号： B41J2/01 , B41M5/00 , B41M5/50 , B41M5/52 , C08F2/48 , C08F290/06 , C08F299/00 , C08J7/00 , C08J7/04
摘要： PROBLEM TO BE SOLVED: To provide a recording material capable of being clarified (raising its light transmittance) by accepting water and/or a solvent in a white porous layer, recording information, maintaining the transparency (the light transmittance) even after removing the accepted water and/or the solvent by evaporating and being easily recycled by sequentially treating with a hydrophilic solvent and a hydrophobic solvent with good long-term stability of recorded information. SOLUTION: The recording material comprises a base material and the white porous layer provided on at least one surface of the base material. In this case, the porous layer raises the light transmittance as compared with before accepting the water and/or the solvent in the case of accepting the water and/or the solvent and maintains a state in which the transmittance is raised as compared with before accepting the water and/or the solvent even after removing the accepted water and/or the solvent by evaporating.

9. 发明专利

JPH1085571A SEPARATING MEMBRANE 失效
公开(公告)号：JPH1085571A
公开(公告)日：1998-04-07
申请号：JP15969597
申请日：1997-06-17
申请人： DAINIPPON INK & CHEMICALS
发明人： NAGATA HIROTOMO
IPC分类号： B01D53/22 , B01D71/62 , B01D71/64 , C08G73/06 , C08G73/10
摘要： PROBLEM TO BE SOLVED: To manufacture a separating membrane having a superior strength, durability, heat resistance and solvent resistance and also superior balance between substance separating characteristics and substance permeability of a membrane by constituting the membrane having non-porous dense layer formed of hydrazide-imide resin. SOLUTION: Hydrazide-imide resin can be manufactured by polymerizing tetracarboxylic acids, dyhidazides and as required, other copolymerization components in a proper solvent such as, N-methyl pyrrolidone, N,N- dimethylacetoamide, dimethylsolfoxide, sulfolane or the like. As tetracarboxylic acids, tetracarboxylic acid having a ring structure, tetracarboxylic dianhydride, tetracarboxylic diester, tetracarboxylic diester dichloride, and the like are preferred, and particularly, tetracarboxylic dianhydride is particularly preferable. As the dihydazides, dihydrazide having the ring structure is preferred, and particularly, aromatic dihydrazide is preferable.

10. 发明专利

JPH0970523A POLYIMIDE SEPARATION MEMBRANE AND PRODUCTION OF POLYIMIDE HOLLOW FIBER MEMBRANE 失效
公开(公告)号：JPH0970523A
公开(公告)日：1997-03-18
申请号：JP22900095
申请日：1995-09-06
申请人： DAINIPPON INK & CHEMICALS
发明人： TAKATAKE MASAYOSHI , NAGATA HIROTOMO
IPC分类号： B01D63/02 , B01D71/64
摘要： PROBLEM TO BE SOLVED: To produce a separation membrane excellent in permeability and selectivity for gases by forming dense layers of a polyimide separation membrane from a polyimide containing a specified repeating unit. SOLUTION: The separation membrane has dense layers produced from polyimide containing a repeating unit expressed by formula. In formula, R is a quadrivalent aromatic group. Polyimide is generally produced by polymn. of a tetracarboxylic acid dianhydride component and a diamine or diisocyanate or deriv. of these by the same mole in a solvent, to which a proper reaction assistant is added if necessary. The obtd. polyimide has a repeating unit consisting of quadrivalent residues from the acid component and bivalent residues from the amine component. Thereby, the obtd. separation membrane has excellent gas permselectivity, especially for separation of oxygen and nitrogen. The polyimie thus produced can be formed into thin dense layers.

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