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1. 发明专利

JPH0977715A BROMINATION OF BENZANTHRONE 失效
公开(公告)号：JPH0977715A
公开(公告)日：1997-03-25
申请号：JP23711595
申请日：1995-09-14
申请人： MITSUI TOATSU CHEMICALS
发明人： OKUMA TADASHI , ITO NAOTO
IPC分类号： C07C45/63 , C07C49/697 , C09B3/08
摘要： PROBLEM TO BE SOLVED: To produce 3,9-dibromobenzanthrone useful as a synthetic intermediate for a dye, etc., in a process capable of separating it without needing a recovery process for bromine at high yield and high quality by reacting benzanthrone with bromine in sulfuric acid in the presence of nitrosylsulfuric acid. SOLUTION: A compound of formula II is produced by reacting (C) benzanthrone of formula I with (D) bromine in (A) sulfuric acid in the presence of (B) nitrosylsulfuric acid. Further, it is preferable that the component B and the component D are used at molar ratios of 0.01-5.0 and 0.9-3.0 against the component C, respectively. Concretely, for instance, sodium nitrite is added to 98% sulfuric acid to prepare the component B in the component A; the component C is added to the mixture; the temperature is elevated up to 10-80 deg.C, especially 40-60 deg.C and the component D is added dropwise; further, the reaction mixture is stirred for a specified time at 20-100 deg.C, especially 50-90 deg.C; water is discharged from the reaction mixture after degassing, and a solid is filtered and washed with water.

2. 发明专利

JP2590109B2 失效
公开(公告)号：JP2590109B2
公开(公告)日：1997-03-12
申请号：JP16520887
申请日：1987-07-03
申请人： MITSUI TOATSU CHEMICALS
发明人： ITO NAOTO , NISHIZAWA ISAO , SASAGAWA KATSUYOSHI
IPC分类号： C08K5/08 , C08G18/08 , C08K5/34 , C08L75/00 , C08L75/04

3. 发明专利

JPH08283593A MANUFACTURE OF YELLOW PIGMENT 失效
公开(公告)号：JPH08283593A
公开(公告)日：1996-10-29
申请号：JP8921595
申请日：1995-04-14
申请人： MITSUI TOATSU CHEMICALS
发明人： YAMANO KATSUHIKO , NISHIHARA MASUMI , ITO NAOTO
IPC分类号： C07D487/06 , C09B57/12
摘要： PURPOSE: To produce a yellow pigment weak in reddish orange color and covering power. CONSTITUTION: A reaction mixture obtained by condensation reaction of 1,4,5,8- naphthalenetetracarboxylic acid with o-phenylenediamine is reacted with a potassium salt in the presence of a solvent, followed by hydrolysis at 55 deg.C or below to produce trans-naphthoylenebisbenzimidazole.

4. 发明专利

JPH0811443A YELLOW COLORING MATTER FOR THERMAL TRANSFER RECORDING, INK COMPOSITION FOR THERMAL TRANSFER RECORDING AND TRANSFER SHEET 失效
公开(公告)号：JPH0811443A
公开(公告)日：1996-01-16
申请号：JP15190594
申请日：1994-07-04
申请人： MITSUI TOATSU CHEMICALS
发明人： MATSUZAKI YORIAKI , OGISO AKIRA , SHIMOKAWA YASUSHI , ITO NAOTO , TAKUMA HIROSUKE
IPC分类号： B41M5/385 , B41M5/388 , B41M5/39 , C09B29/42 , B41M5/38
摘要： PURPOSE:To obtain a transfer sheet having a high sublimation rate and excellent in image stability after transfer by using an ink compsn. prepared by compounding coloring matter for thermal transfer recording represented by a specific general formula, a binder resin and a solvent. CONSTITUTION:An ink compsn. for thermal transfer recording is prepared by compounding yellow coloring matter for thermal transfer recording represented by formula (R is a 3-8C branched or cyclic substituted or non- substituted alkyl group and R is a 5-10C branched or cyclic substituted or non-substituted alkoxyalkyl group), a binder resin and an org. solvent and/or water. This ink compsn. is applied to the single surface of a base material sheet and dried to form a coloring matter support layer to obtain a transfer sheet. When thermal transfer recording is performed, the transfer sheet is superposed on a material to be recorded and heated and pressed according to a recording pattern from the back surface of the transfer sheet by a thermal recording head to transfer the coloring matter on the transfer sheet to the material to be recorded.

5. 发明专利

JPH0748352A PRODUCTION OF QUINOPHTHALONEDICARBOXYLIC ACID HAVING HIGH PURITY 失效
公开(公告)号：JPH0748352A
公开(公告)日：1995-02-21
申请号：JP19593993
申请日：1993-08-06
申请人： MITSUI TOATSU CHEMICALS
发明人： OGISO AKIRA , MISAWA TSUTAYOSHI , IMAI RIHOKO , ITO NAOTO , IRISATO YOSHIHIRO , TAKUMA HIROSUKE
IPC分类号： C07D215/20 , C09B25/00
摘要： PURPOSE:To obtain quinophthalonedicarboxylic acid having high purity and useful as an intermediate for pigment, etc., by hydrolyzing and neutralizing a specific quinophthalonedicarboxylic acid anhydride with an alkaline compound to obtain a solubilized product, removing insoluble impurities by filtration and adding an acid to precipitate the free acid. CONSTITUTION:This quinophthalonedicarboxylic acid having high purity and expressed by the formula III can be produced by adding an aqueous solution of an alkaline compound (e.g. sodium hydroxide) to a quinophthalonedicarboxylic acid anhydride expressed by the formula I (X is H, halogen or alkyl), heating the liquid mixture to 50 deg.C after confirming the adjustment of pH to 12.9, stirring for 2hr at 50-52 deg.C to effect the hydrolysis and neutralization of the compound and form a solubilized quinophthalone compound salt expressed by the formula II (Y and Z are cation), removing insoluble impurities from the product by filtration, adding an acid (e.g. sulfuric acid) to adjust the pH to 1.95, heating at 90 deg.C, keeping at the temperature for 2hr, adding water to precipitate crystals, collecting the crystal by filtration and drying the product.

6. 发明专利

JPH0684113B2 失效
公开(公告)号：JPH0684113B2
公开(公告)日：1994-10-26
申请号：JP27687785
申请日：1985-12-11
申请人： MITSUI TOATSU CHEMICALS
发明人： ITO NAOTO , MIKOTA TAMIO , AIGA HIROSHI , IGATA AKITOSHI , KANATOMI MASATO
IPC分类号： B41M5/382 , B41M5/26 , B41M5/385 , B41M5/388 , B41M5/39 , B41M5/38

7. 发明专利

JPH06279597A NEAR-INFRARED ABSORBING FILM 失效
公开(公告)号：JPH06279597A
公开(公告)日：1994-10-04
申请号：JP6966393
申请日：1993-03-29
申请人： MITSUI TOATSU CHEMICALS
发明人： OI TATSU , ITO NAOTO
IPC分类号： C08J5/18 , C08K5/3467 , C08L33/04 , C08L33/08
摘要： PURPOSE:To provide a near-infrared absorbing film improved in heat rays shielding effect and light resistance by incorporating a specific phthalocyanine compd. into a polyalkyl acrylate resin. CONSTITUTION:A polyalkyl acrylate resin is blended with a phthalocyanine compd. of the formula [wherein A to A are each H, halogen, (un)substd. alkyl, or (un)substd. alkoxy, provided that each of the pairs of A and A , A and A , A and A , and A and A is not simultaneously H; B to B are respective H, halogen, (un)substd. alkyl, (un)substd. alkoxy, (un)substd. aryloxy, or (un) substd. arylthio; and M is a bivalent metal atom, a trivalent or tetravelent substd. metal atom, or oxymetal]. The resulting mixture is heat-melted at 150 to 300 deg.C, and then formed into a film to obtain a master roll. The master roll film is monoaxially or biaxially oriented 2- to 5-fold at 60 to 90 deg.C to obtain a near-infrared absorbing film having a thickness of 10 to 200mum and a phthalocyanine compd. content of 1 to 10,000mg/m .

8. 发明专利

JPH06145164A ULTRAVIOLET ABSORBER, BENZOPYRAN DERIVATIVE SUITABLE FOR THE SAME, THERMOPLASTIC RESIN COMPOSITION CONTAINING THE ULTRAVIOLET ABSORBER AND MOLDED ARTICLE 失效
公开(公告)号：JPH06145164A
公开(公告)日：1994-05-24
申请号：JP29504592
申请日：1992-11-04
申请人： MITSUI TOATSU CHEMICALS
发明人： OGISO AKIRA , MISAWA TSUTAYOSHI , IMAI RIHOKO , ITO NAOTO
IPC分类号： C07D311/12 , C07D311/16 , C07D335/06 , C08K5/15 , C08K5/1545 , C08L67/00 , C09K3/00
摘要： PURPOSE:To obtain a new 2H-1-benzopyran-2-one derivative useful as an ultraviolet absorber. CONSTITUTION:A compound of formula I (Y1 is O or S; X1 to X4 are H, halogen, nitro, OH or acetoxy; Q1 to Q5 are H, halogen, nitro or cyano excluding the case wherein Q1 to Q5 are all H atoms) and a compound of formula II (Q6 to Q15 are H, halogen, nitro or cyano). The compound of formula I is obtained by reacting a compound of formula III with thionyl chloride and reacting the reaction product with a compound of formula IV in a solvent.

9. 发明专利

JPH0680744A PHOTOCURABLE RESIN COMPOSITION FOR COLOR FILTER AND PRODUCTION OF COLOR FILTER THEREFROM 失效
公开(公告)号：JPH0680744A
公开(公告)日：1994-03-22
申请号：JP6689093
申请日：1993-03-25
申请人： MITSUI TOATSU CHEMICALS
发明人： KARASAWA AKIO , ITO NAOTO , SUGIMOTO KENICHI
IPC分类号： C08F2/44 , C08F2/48 , C08F8/12 , C08F16/02 , C08F16/06 , C08F20/26 , C08F26/00 , C08F28/00 , C08F220/28 , C08F226/02 , C08F228/02 , C08F290/00 , C08F299/00 , C08G65/32 , C08K5/00 , C08L33/02 , C09B69/00 , D06P3/00 , G02B5/20 , G03F7/004 , G03F7/038
摘要： PURPOSE:To obtain the title compsn. which gives a color filter having good transmission characteristics, exhibiting no depolarization effect, and excellent in durability by dispersing a specific pigment in a water-sol. photocurable res in precursor. CONSTITUTION:The compsn. is prepd. by compounding a photocurable resin precursor with a pigment in such a manner that a photocured resin uniformly colored with the pigment is obtd. The compsn. is characterized in that the precursor is water-sol. but the photocured resin is water-insol., that the pigment is dispersed in the precursor, and that the pigment is sol. in the photocured rein. Examples of the pigment are compds. of formulae I and II (wherein Dye and Dye are each a color-developing core; X and X are each 0, S, or NH; A is alkylene, a polyether linkage group, etc.; Y is H, alkoxy, etc.; R , R , and R are each 1-10C alkyl; l1, m , n , and p are each 0-10; and q and q are each 1-10).

10. 发明专利

JPH05320530A DICHLOMATIC AZO DYE AND POLARIZING FILM USING THE SAME 失效
公开(公告)号：JPH05320530A
公开(公告)日：1993-12-03
申请号：JP12705692
申请日：1992-05-20
申请人： MITSUI TOATSU CHEMICALS
发明人： MISAWA TSUTAYOSHI , OGISO AKIRA , ITO NAOTO , IMAI RIHOKO
IPC分类号： C09B35/035 , C09B35/34 , C09B56/06 , G02B1/08 , G02B5/30
摘要： PURPOSE:To obtain a new compound excellent in polarizing performance, dimensional stability to heat and wet heat resistance and useful for polarizing film, etc., for liquid crystal display. CONSTITUTION:A compound of formula I [R1 is H, methyl, hydroxyl or chloro; R2 and R3 are (substituted)1-3C alkyl; R2 and R3 are cyclized to form an alicyclic amino group], e.g. a compound of formula II. Furthermore, the compound of formula I is obtained by subjecting a compound of formula III to tetrazo forming reaction and then subjecting the resultant compound to coupling reaction with a compound of formula IV.

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