Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1979-08-01
1981-01-13
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C07C 3752
Patent
active
042451280
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.degree. to 250.degree. 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.
REFERENCES:
patent: 4131749 (1978-12-01), Kiedik et al.
Derent Belgian Patent Report, vol. 62 B, P. A15, (May 4, 1960).
Hattori Minoru
Kato Nobukatu
Morimoto Yoshio
Takase Tsutomu
Yuasa Teruo
Lone Werren B.
Mitsui Toatsu Chemicals Inc.
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