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. 24, 1976
Filed:
Oct. 24, 1974
Applicant:
Inventors:
Nicola Palladino, Monterotondo, IT;
Marcello Mazzei, Milan, IT;
Paolo Bacchin, Rome, IT;
Walter Marconi, San Donato Milanese, IT;
Assignee:
Snam Progetti S.p.A., San Donato Milanese, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 66 ; 260D / ; 526-9 ; 526 13 ; 526 42 ; 526 54 ; 526 55 ; 526914 ;
Abstract
A copolymer of ethylene and vinyl alcohol which contains ketoether groups and is photodegradable under the direct action of sunlight is prepared by reacting an ethylene-vinyl alcohol copolymer with alpha-diazoacetophenone in the presence of an organic solvent and a catalyst consisting of a Lewis acid.