Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Heterocyclic ring compound; a heterocyclic ring is one...
Reexamination Certificate
2004-04-14
2010-10-19
Caldarola, Glenn (Department: 1797)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Heterocyclic ring compound; a heterocyclic ring is one...
C508S545000, C508S563000, C508S583000
Reexamination Certificate
active
07816308
ABSTRACT:
Disclosed herein is a composition comprising:A) a lubricant; andB) a mixture of antioxidants, wherein said mixture is prepared by the partial condensation of an alkylated diphenylamine with an aldehyde or ketone in the presence of an acidic catalyst to yield at least one acridan of the general formula:wherein:R1, R2, R3, and R4are independently selected from the group consisting of hydrogen, C3to C32alkyl, and C3to C32alkenyl, provided that at least one of R1, R2, R3, and R4is not hydrogen, and R5and R6are independently selected from the group consisting of C1to C20hydrocarbyl and hydrogen;wherein, at the termination of said condensation, residual alkylated diphenylamine is not separated from the acridan product.
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Baranski John R.
Duyck Karl J.
Migdal Cyril A.
Nalesnik Theodore E.
Seibert Rebecca F.
Caldarola Glenn
Crompton Corporation
Goloboy Jim
Suhadolnik Joseph
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