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:
Mar. 24, 1998
Filed:
Aug. 29, 1995
Applicant:
Inventors:
Gianfranco Palumbo, Pescara, IT;
Giovanni Carlucci, Pescara, IT;
Assignee:
Societa Consortile Ricerche Angelini S.P.A., Pescara, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C07H / ; C08B / ;
U.S. Cl.
CPC ...
502404 ; 536 551 ; 536 56 ; 536 58 ; 536124 ;
Abstract
A synthesis is described for the preparation of cationic polymer materials with a semisynthetic matrix, having superabsorption characteristics towards water and saline solutions. More particularly, cellulose cationic derivatives are described, having superabsorption characteristics, which are obtained starting from cellulose substrates which are reacted with an excess of quaternary ammonium compound in an alkaline medium.