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公开(公告)号：KR810000580B1
公开(公告)日：1981-06-03
申请号：KR780003557
申请日：1978-11-25
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAZAKI NOBORU , AOI KUNIO , MORIMOTO YOSHIO , TAKESE TSUDOMU , YUASA TERUO
IPC: C07C39/18
Abstract: A linear trimer of paraisoprophenyl phenol (I) is prepd. by reacting paraisophenyl phenol or its linear polymer in the presence of an acid catalyst such as sulfuric acid, boron fluoride or activated clay in an aromatic hydrocarbon, halogenated hydrocarbon, substituted arom. hydrocarbon or aprotic polar solvent (e.g. benzene, carbon tetrachrolide, nitrobenzene or dioxane).
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公开(公告)号：KR820002005B1
公开(公告)日：1982-10-24
申请号：KR790002918
申请日：1979-08-27
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATSU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
IPC: C07C39/06
Abstract: Isopropenyl phenol is produced by the thermal decomposition of its oligomers. Process comprises continuously feeding the oligomers into an inert organic reaction medium; heating to 150-250≦̸C at 10-100 mm Hg at a rate such that the concn. of oligomers is not more than 30 wt.% and continuously distilling off the prod. and recovering it. The medium is a high boiling organic solvent of melting or softening point not more than 150≦̸C and a lower vapour pressure than the prod. at the oligomer decomposition temp. Prods. have reduced contents of impurities.
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公开(公告)号：CH642042A5
公开(公告)日：1984-03-30
申请号：CH738779
申请日：1979-08-10
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
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公开(公告)号：CA1133017A
公开(公告)日：1982-10-05
申请号：CA333624
申请日：1979-08-13
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
IPC: C07C39/04 , B01J23/00 , B01J31/00 , C07B61/00 , C07C27/00 , C07C37/52 , C07C39/06 , C07C39/19 , C07C39/205 , C07C39/23 , C07C67/00
Abstract: A novel process for producing alkanyl phenols, which comprises continuously feeding a dihydroxydiphenyl alkane such as 2,2-(4,4'-dihydroxydiphenyl)propane, 2,2 (4,4'-dihydroxy-3,3'-dimethyldiphenyl)propane, 2,2-(4,4'-dihydroxydiphemyl)butane, 2,2-(4,4'-dihydroxydiphenyl)-4-methylpentane, 1,1,1-(4,4'-dihydroxytriphenyl)ethane and 1,1-(4,4'-dihydroxydiphenyl)cyclohexane into a high-boiling inert organic reaction medium such as an alkylnaphthalene containing a basic catalyst and heated at 150 to 250.degree.C under 10 to ?100 ???? while maintaining the concentration of the dihydroxydiphenyl alkane in the reaction medium at not more than 30% by weight, thereby cleaving it in the reaction medium; and continuously distilling off the cleavage prodocut out of the reaction system and recovering it. This process can afford the corresponding highly pure alkanyl phenol as a monomer and/or its polymer almost quantitatively.
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公开(公告)号：CS213393B2
公开(公告)日：1982-04-09
申请号：CS531179
申请日：1979-08-01
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
IPC: C07C39/04 , B01J23/00 , B01J31/00 , C07B61/00 , C07C27/00 , C07C37/52 , C07C39/06 , C07C39/19 , C07C39/205 , C07C39/23 , C07C67/00
Abstract: A novel process for producing alkenyl phenols, which comprises continuously feeding a dihydroxydiphenyl alkane such as 2,2-(4,4'-dihydroxydiphenyl)propane, 2,2-(4,4'-dihydroxy-3,3'-dimethyldiphenyl)propane, 2,2-(4,4'-dihydroxydiphenyl)butane, 2,2-(4,4'-dihydroxydiphenyl)-4-methylpentane, 1,1,1-(4,4'-dihydroxytriphenyl)ethane and 1,1-(4,4'-dihydroxydiphenyl)cyclohexane into a high-boiling inert organic reaction medium such as an alkylnaphthalene containing a basic catalyst and heated at 150 DEG to 250 DEG C. under 10 to 100 mmHg while maintaining the concentration of the dihydroxydiphenyl alkane in the reaction medium at not more than 30% by weight, thereby cleaving it in the reaction medium; and continuously distilling off the cleavage product out of the reaction system and recovering it. This process can afford the corresponding highly pure alkenyl phenol as a monomer and/or its polymer almost quantitatively.
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Patent Agency Ranking
公开(公告)号：CS213392B2
公开(公告)日：1982-04-09
申请号：CS531079
申请日：1979-08-01
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
Abstract: A novel process for producing isopropenyl phenol such as p-isopropenyl phenol which comprises continuously feeding oligomers of isopropenyl phenol having a degree of polymerization of 2 to 5 into a high-boiling inert organic reaction medium such as an alkylnaphthalene heated at 150 DEG to 250 DEG C. under a pressure of 10 to 100 mmHg while maintaining the concentration of the oligomers in the reaction medium at not more than 30% by weight, thereby thermally decomposing the oligomers in the reaction medium; and continuously distilling off the resulting isopropenyl phenol out of the reaction system and recovering it. The process almost quantitatively gives isopropenyl phenol having reduced contents of impurities.
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公开(公告)号：DD145527A5
公开(公告)日：1980-12-17
申请号：DD21496979
申请日：1979-08-14
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO
IPC: C07C39/04 , B01J23/00 , B01J31/00 , C07B61/00 , C07C27/00 , C07C37/52 , C07C39/06 , C07C39/19 , C07C39/205 , C07C39/23 , C07C67/00 , C07C39/16
Abstract: A novel process for producing alkenyl phenols, which comprises continuously feeding a dihydroxydiphenyl alkane such as 2,2-(4,4'-dihydroxydiphenyl)propane, 2,2-(4,4'-dihydroxy-3,3'-dimethyldiphenyl)propane, 2,2-(4,4'-dihydroxydiphenyl)butane, 2,2-(4,4'-dihydroxydiphenyl)-4-methylpentane, 1,1,1-(4,4'-dihydroxytriphenyl)ethane and 1,1-(4,4'-dihydroxydiphenyl)cyclohexane into a high-boiling inert organic reaction medium such as an alkylnaphthalene containing a basic catalyst and heated at 150 DEG to 250 DEG C. under 10 to 100 mmHg while maintaining the concentration of the dihydroxydiphenyl alkane in the reaction medium at not more than 30% by weight, thereby cleaving it in the reaction medium; and continuously distilling off the cleavage product out of the reaction system and recovering it. This process can afford the corresponding highly pure alkenyl phenol as a monomer and/or its polymer almost quantitatively.
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公开(公告)号：DE2932959A1
公开(公告)日：1980-02-28
申请号：DE2932959
申请日：1979-08-14
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
Abstract: A novel process for producing isopropenyl phenol such as p-isopropenyl phenol which comprises continuously feeding oligomers of isopropenyl phenol having a degree of polymerization of 2 to 5 into a high-boiling inert organic reaction medium such as an alkylnaphthalene heated at 150 DEG to 250 DEG C. under a pressure of 10 to 100 mmHg while maintaining the concentration of the oligomers in the reaction medium at not more than 30% by weight, thereby thermally decomposing the oligomers in the reaction medium; and continuously distilling off the resulting isopropenyl phenol out of the reaction system and recovering it. The process almost quantitatively gives isopropenyl phenol having reduced contents of impurities.
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公开(公告)号：AU4947279A
公开(公告)日：1980-02-21
申请号：AU4947279
申请日：1979-08-01
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATU , TAKASE TSUTIMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
Abstract: A novel process for producing isopropenyl phenol such as p-isopropenyl phenol which comprises continuously feeding oligomers of isopropenyl phenol having a degree of polymerization of 2 to 5 into a high-boiling inert organic reaction medium such as an alkylnaphthalene heated at 150 DEG to 250 DEG C. under a pressure of 10 to 100 mmHg while maintaining the concentration of the oligomers in the reaction medium at not more than 30% by weight, thereby thermally decomposing the oligomers in the reaction medium; and continuously distilling off the resulting isopropenyl phenol out of the reaction system and recovering it. The process almost quantitatively gives isopropenyl phenol having reduced contents of impurities.
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公开(公告)号：MX150934A
公开(公告)日：1984-08-22
申请号：MX17887879
申请日：1979-08-10
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATO NOBUKATSU , TAKASE TSUTOMU , MORIMOTO YOSHIO , YUASA TERUO , HATTORI MINORU
Abstract: A novel process for producing isopropenyl phenol such as p-isopropenyl phenol which comprises continuously feeding oligomers of isopropenyl phenol having a degree of polymerization of 2 to 5 into a high-boiling inert organic reaction medium such as an alkylnaphthalene heated at 150 DEG to 250 DEG C. under a pressure of 10 to 100 mmHg while maintaining the concentration of the oligomers in the reaction medium at not more than 30% by weight, thereby thermally decomposing the oligomers in the reaction medium; and continuously distilling off the resulting isopropenyl phenol out of the reaction system and recovering it. The process almost quantitatively gives isopropenyl phenol having reduced contents of impurities.
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