Enichem Synthesis S.p.a

Omero Zavattini, Deceased

Silvestro Costanzi

Damiano Gussoni

Luciano Pallini

By Clara Pungiluppi, Heir

By Renato Zavattini, Heir

Ugo Bersellini

Reactive stabilizer compounds, to be used in the stabilization of organic polymers, contain a sterically hindered, N-substituted piperidinic, morpholinic or pyrrolidinic group, and at least a hydrolysable silicic function. Such compounds give rise, by hydrolysis of the silicic function, to complex resinous structures endowed with stabilizing properties. The reactive stabilizer compounds can spontaneously hydrolyse inside the polymer, or they can be stably supported on a solid support, or they can be chemically linked to the polymeric chain to be stabilized.

Silylated U.V. stabilizers containing hindered tertiary amines

Stabilizing inorganic fillers or pigments having simultaneous reinforcing effect and stabilizing effect on organic polymers are obtained by a process comprising the following stages:

Fillers and pigments possessing organic polymer stabilizing properties

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Curtatone, Italy

Omero Zavattini, Deceased