Abstract: A key matrix circuit device includes a key matrix having scan terminals, sense terminals, switches arranged in a matrix, and voltage dividing resistors connected between the sense terminals and the switches, and a wake-up circuit having an output terminal outputting a switch signal causing a switch unit to switch a mode of an information processing apparatus to a power-saving mode or a normal mode, a power source terminal connected to a power source, and a connection terminal connected to the power source terminal and the scan terminals. The voltage dividing resistors have resistance values that make voltages of the sense terminals to a predetermined voltage or less. The wake-up circuit outputs a switch signal to switch the mode to the normal mode when at least one of the switches is turned on and a potential of the connection terminal is brought into a first level in the power-saving mode.

Abstract: This invention relates to a process for preparing bisphenol A by the condensation of phenol with acetone in the presence of cation exchange resin obtained by sulfonating copolymers of monovinyl monomers mainly consisting of styrenes and divinyl monomers as crosslinking agent while using divinylbiphenyl and divinylbenzene mainly as said divinyl monomers and controlling the molar ratio of divinylbiphenyl to divinylbenzene at 10/0-2/8. The cation exchange resin to be used as catalyst in the condensation reaction shows a long life, maintains the production of bisphenol A over a long period of time, possesses high strength and is useful for economical and advantageous production of bisphenol A.

Abstract: 2-Alkyl-6-ethylnaphthalene is prepared selectively and efficiently by the reaction of at least one kind of feed naphthalene selected from naphthalene and 2-alkylnaphthalenes with polyethylbenzenes at 50.degree. to 400.degree. C. in the presence of a solid acid catalyst.

Abstract: This invention provides a method for separating 2,6-diethylnaphthalene from a mixture of diethylnaphthalene isomers by contacting said mixture with zeolite producing the same powder X-ray diffraction pattern as faujasite and the method can efficiently separate 2,6-diethylnaphthalene from ethylation reaction products containing diethylnaphthalene isomers.

Abstract: This invention relates to a method of making ethylbiphenyls by the reaction of biphenyl with polyethylbenzenes or with ethylene and polyethylbenzenes in the presence of a solid acid catalyst and offers advantages of industrial significance such as absence of acidic waste water, no need of costly materials for equipment, catalyst reuse, and adaptability to a fixed-bed flow reaction system suitable for large-scale production.