| 摘要 |
<p>Hydroxythiols are obtained by reacting an alkylene oxide with hydrogen sulphide in the presence of a catalyst in the form of an ion exchange resin. Suitable alkylene oxides are those having 2 to 4 carbon atoms. The reaction can be effected at temperatures between 0 DEG and 100 DEG C., preferably between 15 DEG and 45 DEG C. The reaction medium may be diluted by an inert fluid and when the alkylene oxide is gaseous the diluent fluid is suitably an inert gas such as nitrogen or carbon dioxide gas. Ion-exchange resins which are used include: resins based on sulphonated phenol-formaldehyde products, polyamines, polyamines of styrene-divinyl-benzene copolymers, methacrylic resins, quaternary ammonium derivatives of styrene copolymers and ureaformaldehyde. Examples are given where the alkylene oxide used as starting material is ethylene oxide 1-2-propylene oxide and 1-monochloro2,3-propylene oxide, the products being respectively mercaptoethanol, 1-thiol 2-propanol and Cl.CH2.CH(OH).CH2SH.</p> |
