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公开(公告)号：JPH07100384A
公开(公告)日：1995-04-18
申请号：JP25085693
申请日：1993-10-06
Applicant: TORAY INDUSTRIES
Inventor： WATANABE TETSUYA , OKUBO TAKASHI , NOGUCHI MITSUAKI
Abstract: PURPOSE:To industrially advantageously produce cyclohexane from chlorocyclohexan by using a magnesium phosphate catalyst consisting essentially of magnesium phosphate, treated with a compd. selected among ammonia, amines and alkali metal hydroxides or alkaline earth metal hydroxides. CONSTITUTION:This magnesium phosphate catalyst consists essentially of magnesium phosphate, and is treated with at least one kind of compd. selected among ammonia, amines and alkali metal hydroxides or alkaline earth metal hydroxides. When cyclohexane is produced by removing hydrogen chloride from chlorocyclohexane, this chlorocyclohexane is brought into contact with the magnesium phosphate catalyst in a vapor phase. High purity cyclohexane is industrially advantageously produced from chlorocyclohexane in a high yield.
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公开(公告)号：JPH0193552A
公开(公告)日：1989-04-12
申请号：JP25092487
申请日：1987-10-05
Applicant: TORAY INDUSTRIES
Inventor： KONDO RYOZO , OKUBO TAKASHI
Abstract: PURPOSE:To economically obtain the titled compound used as an intermediate for medicine and agricultural chemical, polyester monomer or antioxidant, by heating inexpensive and readily available chlorohexylhydroquinone used as a starting raw material in the presence of a specific catalyst. CONSTITUTION:Cyclohexyl hydroquinone used as a starting raw material compound is heated and reacted in the presence of a catalyst carrying a platinum group metal treated with a divalent sulfur compound normally at 250-500 deg.C, preferably 300-400 deg.C to provide the aimed compound. The platinum group metal used as the above-mentioned catalyst is platinum, ruthenium, etc. and a metal oxide such as silicon dioxide or alumina is used as a support carrying the platinum group metal. The catalyst is produced by carrying the above- mentioned platinum group metal and caustic alkali on the metal oxide and treating the composite with the divalent sulfur compound. An addition amount of the sulfur compound to the catalyst is preferably 0.01-1%.
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Patent Agency Ranking
公开(公告)号：JPH07330719A
公开(公告)日：1995-12-19
申请号：JP12030994
申请日：1994-06-01
Applicant: TORAY INDUSTRIES
Inventor： NISHIMURA KAZUAKI , OKUBO TAKASHI , ICHIMURA FUMIO
IPC: C07D201/16
Abstract: PURPOSE:To obtain high-purity epsilon-caprolactam by depolymerizing a thermoplastic substance containing nylon 6 as a principal component and further containing polyethylene terephthalate, recovering the epsilon-caprolactam, adding a basic substance thereto and distilling the resultant mixture. CONSTITUTION:This method for purifying epsilon-caprolactam is to depolymerize a thermoplastic substance containing nylon 6 as a principal component and further containing polyethylene terephthalate in the presence of water using phosphoric acid and/or a phosphate catalyst, provide the epsilon-caprolactam, then add a basic substance to the recovered epsilon-caprolactam, distill the resultant mixture, afford the distilled out 6-caprolactam, crystallize the distilled out epsilon- caprolactam and provide the high-purity epsilon-caprolactam. In the depolymerization, steam is preferably continuously fed to a depolymerization reactor to continuously recover the produced epsilon-caprolactam, together with water, from the reactor and feed the recovered epsilon-caprolactam to the distillation step. An alkaline hydroxide, an alkaline hydrogencarbonate, an alkaline carbonate and an alkaline phosphate are cited as the basic substance to be added to the epsilon-caprolactam before the distillation and the alkaline hydroxide, above all, NaOH is preferred.
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公开(公告)号：JPS6490148A
公开(公告)日：1989-04-06
申请号：JP24829987
申请日：1987-10-01
Applicant: TORAY INDUSTRIES
Inventor： KONDO RYOZO , OKUBO TAKASHI
Abstract: PURPOSE:To obtain the titled compound useful as an intermediate for pharmaceuticals and agricultural chemicals or a raw material for plastics, in high selectivity and yield, by the thermal reaction of hydroquinone with cyclohexene in an organic solvent in the presence of phosphoric acid as a catalyst. CONSTITUTION:The objective compound can be produced by reacting hydroquinone with cyclohexene in an organic solvent in the presence of phosphoric acid as a catalyst under heating, preferably at 120-180 deg.C, especially at 140-160 deg.C. The phosphoric acid used as the above catalyst is usually preferably a 70-90% aqueous solution of orthophosphoric acid (50.7-65.1% in terms of P2O5) and its amount is most preferably 50-200% based on hydroquinone. The organic solvent is an aromatic hydrocarbon or an aromatic hydrocarbon derivative having a boiling point of >=160 deg.C and preferably having proper solubility of hydroquinone, e.g. mesitylene or propylbenzene. The amount of the solvent is 1-5pts.wt. per 1pt.wt. of hydroquinone.
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公开(公告)号：JPS6411130A
公开(公告)日：1989-01-13
申请号：JP16589587
申请日：1987-07-02
Applicant: TORAY INDUSTRIES
Inventor： KONDO RYOZO , OKUBO TAKASHI
Abstract: PURPOSE:To economically produce a colorless HXO polymer capable of readily carrying out treatment in air and separation of a catalyst after reaction and having high polymerization degree, by heating cyclohexene oxide in the presence of tetraboric acid or anhydrous boric acid. CONSTITUTION:Cyclohexene oxide is heated in the presence of tetraboric acid and/or anhydrous boric acid. The boric acid is added at an amount of >=0.1wt.%, preferably 5-20wt.% based on the raw material. The reaction temperature is 130-200 deg.C.
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公开(公告)号：JPH0899954A
公开(公告)日：1996-04-16
申请号：JP19952295
申请日：1995-08-04
Applicant: TORAY INDUSTRIES
Inventor： KANAI AYAKO , OKUBO TAKASHI , KANEHARA SEI
IPC: C07D201/16 , C07B63/02
Abstract: PURPOSE: To obtain in high purity a lactam as a raw material for synthesis or an industrial raw material for polyamide fibers, etc., by irradiating a lactam containing ultraviolet-absorbing impurities with ultraviolet rays to decompose the impurities. CONSTITUTION: The objective high purity lactam is obtained by irradiating a lactam containing ultraviolet-absorbing impurities such as octahydrophenazine with ultraviolet rays having wavelengths of 280-350nm using pref. an artificial or natural light source pref. at an energy of >=10m in the distance from the light source to the lactam to effect decomposition of the impurities. It is preferable that the lactam has an ultraviolet transmissivity at a wavelength of 290nm of >=95% in the form of a 50% aqueous solution and be ε-caprolactam or ω- laurolactam. The lactam is pref. irradiated with ultraviolet rays in a molten state or a solvent solution (the solvent has a UVB-transmissivity >=50%).
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公开(公告)号：JPH07330720A
公开(公告)日：1995-12-19
申请号：JP12031094
申请日：1994-06-01
Applicant: TORAY INDUSTRIES
Inventor： NISHIMURA KAZUAKI , OKUBO TAKASHI , ICHIMURA FUMIO
IPC: C07D201/16
Abstract: PURPOSE:To obtain high-purity caprolactam by depolymerizing a thermoplastic substance containing nylon 6 as a principal component and containing further nylon 66, adding a basic substance to the recovered epsilon-caprolactam, distilling the resultant mixture and crystallizing the distilled out epsilon-caprolactam. CONSTITUTION:This method for purifying epsilon-caprolactam is to depolymerize a thermoplastic substance containing nylon 6 as a principal component and further containing nylon 66 in the presence of water using preferably phosphoric acid and/or a phosphate catalyst, recover the epsilon-caprolactam, then add a basic substance to the recovered epsilon-caprolactam, distill the resultant mixture, afford the distilled cut epsilon-caprolactam, crystallize the distilled out epsilon-caprolactam and provide the high-purity epsilon-caprolactam. The thermoplastic substance further containing at least one selected from cellulosic fibers, proteinic fibers, acrylic fibers, polyurethanes, polyacrylates and polyethylene terephthalate therein may be used. In the depolymerization, steam is preferably continuously fed to a reactor to continuously take out the produced epsilon-caprolactam, together with water, from the reactor.
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