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:
Apr. 29, 1997
Filed:
May. 12, 1995
Applicant:
Inventors:
Alessandro Lombardi, Abingdon, GB;
Geraldo Barini, Livorno, IT;
Carmine D'Antonio, Bergeggi, IT;
Stefano Gusi, Bologna, IT;
Assignee:
Exxon Chemical Patents Inc., Linden, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
525 52 ; 525 53 ; 525285 ; 525319 ;
Abstract
A functionalised polymer, especially an ashless dispersant or a viscosity index improver dispersant, suitable for use as a lubricating or fuel oil additive, or as an intermediate for use in the manufacture of such an additive, is prepared from reactants in different phases by reacting the reactants in a reaction region defined by adjacent surfaces between which there is relative movement or in a thin film on a surface over which they move.