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:
Sep. 28, 1976
Filed:
Oct. 24, 1974
Applicant:
Inventors:
Nicola Palladino, Monterotondo, IT;
Marcello Mazzei, Milan, IT;
Walter Marconi, San Donato Milanese, IT;
Assignee:
Snam Progetti S.p.A., San Donato Milanese, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526-1 ; 260D / ; 526914 ;
Abstract
A novel process for making polymers degradable by the direct action of sunlight is disclosed. The process is based on the addition to the polymer of a compound having the formula: ##EQU1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and are selected from the group consisting of aromatic radicals with the proviso that one or two of them may be selected from the group consisting of hydrogen, alkyl, cycloalkyl and arylalkyl.