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:
Oct. 27, 2009
Filed:
Feb. 13, 2007
Qinggao MA, Naugatuck, CT (US);
Qinggao Ma, Naugatuck, CT (US);
Chemtura Corporation, Middlebury, CT (US);
Abstract
Tetraaromatic diamine compounds having the general formula: are provided wherein a is 0-3; b, c and d independently are integers from 0-5, Rand Rtogether with the carbon atoms to which they are bonded are joined together to form a substituted or unsubstituted Cto about Cring, saturated, partially unsaturated or fully unsaturated, optionally substituted with one or more heteroatoms, a is 0-3; b, c and d independently are integers from 0-5, R, R, Rand Rare independently hydrogen, a straight or branched C-Calkyl or alkylene group optionally substituted with one or more substituents, a substituted or unsubstituted C-Ccycloalkyl, a substituted or unsubstituted C-Caryl, a substituted or unsubstituted C-Carylalkyl, a straight or branched C-Calkoxy group optionally substituted with one or more substituents or two Rsubstituents and/or two Rsubstituents and/or two Rsubstituents on adjacent carbon atoms of the aromatic ring associated therewith can be joined together to form a substituted or unsubstituted Cto about Cring, saturated, partially unsaturated or fully unsaturated, optionally substituted with one or more heteroatoms. Lubricating oil compositions containing the tetraaromatic diamine compound additives are also provided.