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:
Nov. 16, 1982
Filed:
Dec. 15, 1980
Applicant:
Inventors:
Assignee:
Institut Francais du Petrole, Rueil-Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ; C08F / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
44 62 ; 44 70 ; 252 / ; 252 / ; 252 / ; 252 / ; 524549 ; 524555 ; 524556 ; 5253276 ; 5253277 ; 5253296 ; 526264 ; 526272 ; 526304 ; 526306 ; 526317 ; 526318 ; 526324 ;
Abstract
Copolymers comprising acrylic ester units, dicarboxylic compounds units and diisobutylene units and whose average molecular weight by number is from 500 to 250,000 are useful for improving the cold-flow properties of lube oils and other hydrocarbon oils such as diesel oil, heavy fuel oil, residual fuel oil and crude petroleum.