Process for generating a mixed multicomponent vapor for preparation of monoalkyl ethers of diphenols

A process for developing a multicomponent vapor mixture by heating of solution of reactants comprising one or more of diphenols, or diphenol derivatives, and an organic compound,

• wherein the organic compound is one which upon reacting in a vapor state in presence of a catalyst with diphenols, or diphenol derivatives, produces a monoalkyl ether of a dihydric phenolic compound;
• wherein, the entire solution of reactants is passed through a pre-heater (A) immediately followed by passing through a super-heater (B) (FIG. 1) so as to completely transform into a super-heated multicomponent vapor mixture generation with desired mix of the diphenol or diphenol derivative and an aliphatic or an alicyclic alcohol without the need of thin film evaporator and circulating line, and except for allowing negligible quantity of high boilers which do not re-evaporate upon heating and tars that are formed to be drained out, the vapor mixture is maintained in vapor state in a jacketed vessel (C), which is kept heated by hot oil circulating through the jacket thereby to avoid the production of non-evaporated multicomponent mixture and condensation of a part of the multicomponent vapor mix once it is generated, and the vapor mix is fed to a catalytic reactor to get monoalkyl ether of a dihydric phenolic compound.