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公开(公告)号：JPH0910597A
公开(公告)日：1997-01-14
申请号：JP16214595
申请日：1995-06-28
Applicant: DAINIPPON INK & CHEMICALS
Inventor： YAMAMOTO MINORU , MIZUNO TAKEHISA , OKIHAMA MARIKO
Abstract: PURPOSE: To reduce the quantity of a catalyst without deteriorating productivity and to simplify a post treatment process after a reaction by making a phenol derivative in which a phenolic hydroxyl group forms sulfonic ester. CONSTITUTION: When sulfuric acid and phenol are reacted in a mole ratio of 2-4:1 and at temperature of 50-100 deg.C, an alkylation catalyst for an aromatic compound prepared from a phenol derivative having a sulfo group on an aromatic nucleus and in which a phenolic hydroxyl group forms sulfonic ester is obtained. In the alkylation catalyst, disulfate having two or three sulfo groups on an aromatic nucleus such as trisulfonated phenoldisulfate and disulfonated phenoldisulfate is especially preferable because of its high catalytic activity. A tertiary olefin and phenol are reacted at 50-140 deg.C in the presence of the catalyst to obtain a tertiry alkylphenol.
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公开(公告)号：JP2001039913A
公开(公告)日：2001-02-13
申请号：JP21518399
申请日：1999-07-29
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO
IPC: B01J27/053 , C07B61/00 , C07C37/14 , C07C37/84 , C07C39/14
Abstract: PROBLEM TO BE SOLVED: To purify binaphthol in an industrially advantageous and convenient way by removing by-product in oxidation coupling reaction of β-naphthol into an aqueous phase after oxidation reaction of the by-product in an organic solvent in the presence of an alkaline compound. SOLUTION: This method is to add (A) 0.1-0.5 N alkali aqueous solution to a mixed solution between a reaction product obtained by oxidation coupling reaction of β-naphthol and an organic solvent having a permittivity of l to 7 (preferably an aromatic hydrocarbon such as xylene or toluene), followed by agitation while oxidation reaction of the above reaction product, and to leave them to (B) stand, followed by removing an aqueous phase and by crystallizing the objective product from an organic phase. The mixed solution is obtained e.g. by removing a solid catalyst from a solution of the reaction product obtained by oxidation coupling reaction of β-naphthol in an organic solvent having a permittivity of 1 to 7 in the presence of a supported catalyst. The oxidation reaction preferably is carried out by contacting with an oxygen- containing gas.
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公开(公告)号：JPH10291949A
公开(公告)日：1998-11-04
申请号：JP10160597
申请日：1997-04-18
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO
Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound useful for a raw material for engineering plastics in excellent productivity in high yield without requiring complicated purification, by subjecting a phenol to a coupling reaction in the presence of a specific solid catalyst and a basic compound. SOLUTION: (C) A phenol is subjected to a coupling reaction in the presence of oxygen at 60-300 deg.C in the presence of both (A) a solid catalyst obtained by supporting (A1 ) a transition metal compound such as a divalent copper salt [to be concrete, cupric sulfate (II), a cupric fluoride (II), a cupric nitrate (II), etc.] on (A2 ) an inorganic carrier such as alumina [preferably a catalyst obtained by supporting 0.1-20 pts.wt. of the component A1 on 100 pts.wt. of the component A2 ] and (B) a basic compound such as pyridine or N,N- dimethylformamide.
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公开(公告)号：JP2001233814A
公开(公告)日：2001-08-28
申请号：JP2000050793
申请日：2000-02-28
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO
Abstract: PROBLEM TO BE SOLVED: To improve moldability and productivity while providing performances such as heat resistance and low double refractive index as a material for optical parts. SOLUTION: This new phenol compound is represented by the following general formula 1 (one or both of R1 and R2 are each a 3-16C aliphatic hydrocarbon group and the rest of R1 and R2 is a hydrogen atom, a methyl group or an ethyl group; R3 and R4 are each independently a hydrogen atom, a methyl group or an ethyl group; X is a single bond or another bond group). This polycarbonate resin is obtained from the compound as a raw material.
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公开(公告)号：JP2000247920A
公开(公告)日：2000-09-12
申请号：JP4802799
申请日：1999-02-25
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing bisphenols which is excellent in industrial productivity, and by which the isolation of the product is readily carried out, and the bisphenols are produced in high yield by subjecting phenols to an oxidation coupling reaction in the presence of a metal salt of a fatty acid, and an organic solvent having the dielectric constant within a specific range. SOLUTION: (A) Phenols [preferably phenol or naphthol] are subjected to an oxidation coupling reaction in the presence of (B) a metal salt of a fatty acid (preferably a metal salt of a 2-30C aliphatic carboxylic acid) and (C) an organic solvent having 1-15 dielectric constant (preferably an aromatic organic solvent) to provide the objective biphenols. Preferably, the components A to C are compatibilized and the compatibilized materials are subjected to the oxidation coupling reaction. The component C is preferably used in an amount of 1-5 times as much as the component A expressed by weight ratio to the amount of the component A. The oxidation coupling reaction is preferably carried out under a temperature condition of 100-300 deg.C. The objective compound can be readily isolated by cooling after the reaction to precipitate the compound, and filtrating the precipitated product.
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Patent Agency Ranking
公开(公告)号：JPH09255606A
公开(公告)日：1997-09-30
申请号：JP7214496
申请日：1996-03-27
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO , KUNITAKE YUJI
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing bishenol F excellent in purity and quality, by which an after treatment of the reaction of phenol with formaldehyde for producing bisphenol F can be simplified. SOLUTION: In the production of bisphenol F by using oxalic acid or phosphoric acid as a catalyst, distillation for recovering phenol and purifying distillation for removing scarcely remaining phenol are carried out at temperatures in the range of 120-160 deg.C in the presence of the acidic catalyst which has not been deactivated completely or partially after the reaction of phenol with formaldehyde. Under the conditions, bisphenol F is not decomposed, accordingly the purity of the bisphenol F is not lowered and the deactivation process of the acidic catalyst is simplified or omitted. Thus, pure bisphenol F excellent in quality is obtained with a simpler pretreatment.
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公开(公告)号：JPH07324049A
公开(公告)日：1995-12-12
申请号：JP11831294
申请日：1994-05-31
Applicant: DAINIPPON INK & CHEMICALS
Inventor： KUNITAKE YUJI , OKIHAMA MARIKO
Abstract: PURPOSE:To provide a method for easily purifying p-t-butylphenol in a short time through separating byproducts such as 2,6-p-t-butylphenol to extremely low levels while retaining high recovery of the p-t-butylphenol. CONSTITUTION:Such an amount of an organic solvent (e.g. cyclohexane) as to be soluble for the whole amount of crude p-t-butylphenol (hereafter, abbreviated as crude PTBP) but run to a non-fluid state with the whole amount of the organic solvent included in a liquid state in the PTBP deposited after cooling, for example, 20-120 pts.wt., based on 100 pts.wt. of the PTBP, of the organic solvent is used to dissolve the crude PTBP in the solvent into an organic solvent solution followed by cooling to the non-fluid state, and the organic solvent is then removed by a mechanical separation means such as centrifugal separation to yield a solid product, which is then dried, thus purifying the crude PTBP.
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公开(公告)号：JPH10236997A
公开(公告)日：1998-09-08
申请号：JP4567497
申请日：1997-02-28
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO , YAMAMOTO MINORU
Abstract: PROBLEM TO BE SOLVED: To produce catechols in high efficiency, selectivity and yield by easily controllable reaction by reacting phenol, etc., with hydrogen peroxide in the presence of an organic iron complex and a solvent. SOLUTION: Catechols are produced by reacting phenol or an alkylphenol such as t-butylphenol with hydrogen peroxide at 50-100 deg.C in the presence of an organic iron complex such as ferrocene (the redox potential is preferably between +1.2V and -0.5V) and a solvent such as cyclohexane (pH is preferably
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公开(公告)号：JPH0967287A
公开(公告)日：1997-03-11
申请号：JP22167995
申请日：1995-08-30
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO , KUNITAKE YUUJI
Abstract: PROBLEM TO BE SOLVED: To obtain a compound useful as an epoxy resin material having low viscosity by reacting phenol with formaldehyde in the presence of a phosphorus- based catalyst. SOLUTION: An aqueous solution of formaldehyde is continuously and intermittently dropped to an organic phase containing phenol and a water phase containing a phosphoric acid-based catalyst such as phosphoric acid in a concentration of 50-80wt.% while stirring and mixing the organic phase with the water phase to react the phenol with the form aldehyde at 50-85 deg.C. After finishing the reaction, the water phase is separated and the water phase is reused as a reaction catalyst of phenol with formaldehyde. Furthermore, an amount of water used based on 1mol phosphoric acid is 3-10mol and a molar ratio of phenol/formaldehyde is 6-50.
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公开(公告)号：JPH08268943A
公开(公告)日：1996-10-15
申请号：JP7315295
申请日：1995-03-30
Applicant: DAINIPPON INK & CHEMICALS
Inventor： OKIHAMA MARIKO , KUNITAKE YUJI
Abstract: PURPOSE: To produce bisphenol A useful as a raw material for epoxy resin, etc., suppressing the production of novolak having a large nucleus number without lowering the productivity by reacting an equilibrium mixture of hemiformals as a formaldehyde source. CONSTITUTION: Bisphenol F is produced by reacting (A) phenol with (B) formaldehyde in a heterogeneous liquid-liquid system consisting of the phenol A and (C) a phase consisting of an aqueous solution of an acidic catalyst using (D) an equilibrium mixture of hemiformals as a source of the component B. Preferably, the component C is an aqueous solution of oxalic acid having an oxalic acid concentration of 1-30%, the amount of the component A is 3-50mol based on 1mol of the component B in the component D, the weight ratio of the component C to the component A is 0.3-3 and the component D is produced by the condensation reaction of the component B with a 1-8C alcohol.
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