The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1990
Filed:
Oct. 05, 1987
Silvestro Costanzi, Milan, IT;
Damiano Gussoni, Milan, IT;
Omero Zavattini, deceased, late of Curtatone, IT;
by Clara Pungiluppi, heir, Mantova, IT;
by Renato Zavattini, heir, Mantova, IT;
Luciano Pallini, Parma, IT;
Enichem Synthesis S.p.A., Palermo, IT;
Abstract
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.