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:
Jun. 15, 1976
Filed:
Nov. 15, 1974
Applicant:
Inventors:
Luigi Giuffre, Milan, IT;
Italo Pasquon, Milan, IT;
Enrico Cernia, Rome, IT;
Vittorio Pozzi, Milan, IT;
Arthur Silvers, Milan, IT;
Assignee:
Snam Progetti S.p.A., San Donato Milanese, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526 22 ; 96 88 ; 96114 ; 526 41 ; 526 42 ; 526 52 ; 526 53 ; 526352 ; 526914 ;
Abstract
A hydrocarbon polymer, such as high density polyethylene, is rendered photodegradable through the introduction into the polymer chain of photosensitive >C= O groups by reacting the polymer with a compound such as NOCl in the heterogeneous phase in an acid environment so that - NO groups are introduced into the polymer chain which are converted into >N--OH groups and then subjecting the resultant polymer to hydrolysis so that the >N--OH groups are converted into photosensitive >C = O groups.