Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Silicon dioxide – silicic acid – orthosilicate – or...
Reexamination Certificate
2008-05-27
2008-05-27
McAvoy, Ellen M. (Department: 1797)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Silicon dioxide, silicic acid, orthosilicate, or...
C508S467000, C508S469000, C508S539000
Reexamination Certificate
active
10458505
ABSTRACT:
A grease composition containing a polymer with (a) monomers (i) at least one unsaturated α,β-carboxylic acid ester containing an alkyl group with about 10 to about 20 carbon atoms; and (ii) at least one unsaturated α,β-carboxylic acid ester containing an alkyl group with about 4 to about 11 carbon atoms different from monomer (i); and (iii) at least one unsaturated dicarboxylic acid anhydride or derivatives thereof; and (iv) optionally at least one unsaturated α,β-carboxylic acid ester containing an alkyl group with about 1 to about 3 carbon atoms; and optionally (b) at least one non-monomeric amine with primary functionality, secondary functionality or mixtures thereof; and optionally (c) other performance additives; and (d) at least one thickening agent, and (e) an oil of lubricating viscosity. The invention further relates to the process to make the composition and its use in greases.
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Abstract of Chinese Patent No. CN 1006231 B, Accession No. 1989:176506, Caplus, Dec. 27, 1989.
Fahmy Mohamed G.
Sivik Matthew R.
Gilbert Teresan W.
McAvoy Ellen M.
Shold David M.
The Lubrizol Corporation
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