Caffaro S.p.a.

Industrie Chimiche Caffaro S.p.a.

Caffaro S.p.a. Societa Per L'industria Chimica Ed Electtrochimica

Giordano Donelli

Enrico Pontoglio

Sandro Parodi

Liborio Casale

Giuseppe Ghielmetti

Giancarlo Caretti

Massimiliano Rosellini

Raffaella Taliento

Fausto Dore

Fausto Dore'

Process for making paper and cardboard

Process for purifying, by crystallization, TAED having a titer.gtoreq.99.5% from a mixture containing crude TAED obtained by acetylation of DAED, wherein the purification process is performed in two different stages (1, 2), characterized in that the temperatures at which the stages are performed differ from one another (delta t) by values comprised between 55.degree. and 110.degree..

Taped purification process

Process for preparing basic aluminum compounds

The present invention relates to a process for the continuous production of isophthalodinitrile by amidation and simultaneous dehydration of the dimethyl ester of isophthalic acid in vapor phase on the fixed bed of a dehydration catalyst.

Process for the continuous production of isophthalodinitrile

In an improved process for the continuous production of tetrachlorophthalonitrile, of the type with activated carbon fluidized bed reactor, under whose grid melted and atomized phthalonitrile, chlorine, hydrochloric acid and possibly nitrogen are simultaneously introduced the use of a second static bed reactor, also of activated carbon, in series with the first, is provided for, thereby greatly improving the life of the catalyzer, and, above all, the quality of the product.

Process for the continuous production of tetrachlorophthalo-nitrile in

In an improved process of the continuous production of tetrachlorophthalonitrile, molten atomized phthalonitrile, chlorine, hydrochloric acid and possibly nitrogen are fed simultaneously below the grid of a reactor with a fluidized bed of activated carbon, and the tetrachlorophthalonitrile is separated and recovered continuously by simple cooling.

Process for the continuous production of tetrachlorophthalonitrile in a

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Brescia, Italy

Giordano Donelli