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. 20, 1995
Filed:
Oct. 29, 1993
Applicant:
Inventors:
Alberto Santambrogio, Milan, IT;
Giulio Polimeni, Milan, IT;
Assignee:
Agip Petroli S.p.A., Rome, IT;
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 / ; 525379 ; 525386 ; 525285 ; 525301 ;
Abstract
Oil-soluble polymer improving the viscosity index of lubricating oils, endowed with dispersant properties and capable of lowering the pour point ('pour point depressant'), obtained by means of a first step of reaction between a polyolefinic copolymer and a mixture of C.sub.8 -C.sub.25 alcohol (meth)acrylates and (meth)acrylic acid and a second step of condensation of the so modified copolymer with a polyamine.