C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/616.1, 260/6
C07C 39/19 (2006.01) C07C 37/52 (2006.01)
Patent
CA 1133017
Abstract of the Disclosure 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°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.
333624
Hattori Minoru
Kato Nobukatu
Morimoto Yoshio
Takase Tsutomu
Yuasa Teruo
Mitsui Toatsu Chemicals Inc.
Smart & Biggar
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