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:
Aug. 18, 1992
Filed:
Aug. 06, 1990
Theodore E Nalesnik, Wappingers Falls, NY (US);
Texaco, Inc., White Plains, NY (US);
Abstract
An additive composition comprising an amine-derivatized oxidized copolymer prepared from ethylene and at least one C.sub.3 to C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 30 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 to C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene having a number average molecular weight ranging from about 5,000 to 500,000 which has been reacted with a formaldehyde compound and an amino-aromatic polyamine compound from the group consisting of an N-arylphenylenediamine, an aminocarbazoly, an aminomercaptotriazole, and an aminoperimidine to form said amine-derivatized oxidized copolymer and a lubricating oil composition containing same are provided.