Process for producing tertiary alcohol and for preparing catalyst therefor
AssigneeTosoh Corporation
InventorsAkitaka Hattori, Kazuhiro Nakamura, Tomohiro Washiyama, Takao Kato, Toshihiro Saito, Shoji Arai
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Abstract
A process for producing a polymer having sulfonic acid groups is provided which comprises treating a polymer having sulfonate salt groups with a ion-exchange resin to change the sulfonate salt groups into sulfonate acid groups with porous-type strongly acidic cation exchange resin. A process for producing a tertiary alcohol is also provided which comprises hydration of olefin by use of the aforementioned polymer as the catalyst. By the process, a tertiary alcohol is produced by hydration of olefin with high selectivity at low cost.
Claims7
A process for preparing a tertiary alcohol comprising hydrating an olefin in the presence of polystyrenesulfonic acid or polyvinylsulfonic acid as a catalyst in liquid form which is soluble in water or the olefin.
A homogeneous process for preparing a tertiary alcohol comprising the steps of:
- (1) hydrating an olefin selected for the group consisting of isobutene, .alpha.- methylstyrene, isoprene or mixtures thereof in an aqueous solution, optionally in the presence of an inert solvent, at a temperature of from 30.degree. to 120.degree. C. and at a pressure from atmospheric up to 30 kg/cm.sup.2 in the presence of polystyrene sulfonic acid or polyvinylsulfonic acid as a catalyst soluble in the aqueous solution, the olefin or both, and thereafter
- (2) separating the catalyst in liquid form and from the so produced tertiary alcohol.
Dependencies are inferred from the claim text.