Abstract: A stream of raw phenol, coming from the acidic cracking of cumene hydroperoxide, is purified by a process of extractive distillation carried out in the presence of acetophenone.

Abstract: The disposal of chlorinated pitches is carried out by a process which employs two treatments with an alcohol, which are carried out in cascade.Such treatments cause the precipitation of the suspended matter to take place. This is then caused to settle, and is separated and pyrolized, while the supernatant is distilled in order to separate the alcohol, which is recycled back to the process, from other organic components, which are sent to further uses.

Abstract: A process is disclosed for the purification of the diamide of oxalic acid obtained by means a process wherein copper catalysts are used, by means of the washing with aqueous solutions of an ammonium salt of an organic or inorganic acid, operating at a pH value comprised within the range of from 2 to 8, and at a temperature comprised within the range of from 40.degree. to 150.degree. C.

Abstract: A process is described for the preparation of oxamide derivatives wherein one or both --NH.sub.2 groups are replaced by primary or secondary amino groups, through reaction of oxamide with a suitably selected amine of formula RR.sup.1 NH wherein R represents a substituted straight or branched (C.sub.2 -C.sub.12)alkyl radical wherein the substituent(s) or at least one of the substituents is selected from the group consisting of hydroxy, amino, mono-substituted amino, and di-substituted amino, and R.sup.1 represents hydrogen or an optionally substituted (C.sub.1 -C.sub.6)alkyl radical; representative oxamide derivatives which can thus be obtained useful as corrosion inhibitors, intermediates for polymers, polymer stabilizers, and slow-release fertilizers, are also described.

Abstract: Boron compounds are separated and recovered from a geothermal brine, which additionally contains inorganic salts, such as sodium and potassium chlorides and sulphates, by means of a process comprising the following process steps:(a) pre-concentration of the geothermal brine by expansion up to room pressure, to a pressure lower than room pressure;(b) concentration of the pre-concentrated brine, coming from the (a) step, by means of an osmotic treatment against a concentrated aqueous solution of recycled inorganic salts;(c) treatment of crystallization of the concentrated brine, coming from the (b) step, with the separation of the solid inorganic salts from an aqueous solution of boron compounds;(d) recycle of the inorganic salts separated in the (c) step, to the (b) step of osmosis, in the form of a concentrated aqueous solution; and(e) recovery of boron compounds from the relevant aqueous solution obtained in the (c) step.