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:
Dec. 14, 1993
Filed:
Mar. 23, 1992
Applicant:
Inventors:
Ambrogio Magni, Paderno d'Adda, IT;
Attilio Sioli, Milan, IT;
Claudia Andena, Casalpusterlengo, IT;
Mario Ponzinibbi, Vizzolo Predabissi, IT;
Assignee:
Enichem Anic S.R.L., Palermo, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528485 ; 528499 ;
Abstract
A selective procedure is described for the removal of catalytic residues based on AlCl.sub.3 or its complex compounds deriving from the (co) polymerization of olefinic and diolefinic cuts, allowing the production of almost colourless hydrocarbon resins. This procedure involves putting the polymerized mass in contact with organometallic compounds, treating the resulting mixture with water or aqueous solutions, either acidic or basic, and separating the organic phase, which at this point is without inorganic residues.