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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.:

US 10472584 B1

PDFFull Text
Date of Patent:
Nov. 12, 2019

Filed:

Jul. 30, 2015

Dispersant additives and additive concentrates and lubricating oil compositions containing same

Applicant:

Infineum International Limited, Abingdon, GB;

Inventors:

Jacob Emert, Brooklyn, NY (US);

Sonia Oberoi, Edison, NJ (US);

Gang Hu, Scotch Plains, NJ (US);

Peter J. Hobin, Didcot, GB;

Gareth B. L. Strange, Oxford, GB;

Alessandra Catani, Savona, IT;

Claire L. Fitter, Didcot, GB;

James R. Millington, Oxford, GB;

Assignee:

INFINEUM INTERNATIONAL LTD., Abingdon, Oxfordshire, GB;

Attorney:
Primary Examiner:

Taiwo Oladapo

Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 149/10 (2006.01); C10M 169/06 (2006.01); C10M 163/00 (2006.01); C08G 73/12 (2006.01);
U.S. Cl.
CPC ...
C10M 149/10 (2013.01); C10M 163/00 (2013.01); C10M 169/045 (2013.01); C10M 169/06 (2013.01); C08G 73/12 (2013.01); C10M 2207/26 (2013.01); C10M 2215/28 (2013.01); C10M 2219/046 (2013.01); C10M 2223/045 (2013.01); C10N 2230/02 (2013.01); C10N 2230/04 (2013.01); C10N 2270/00 (2013.01);
Abstract

A lubricant additive concentrate having a kinematic viscosity of from about 40 to about 300 cSt at 100° C., containing a dispersant-detergent colloid complex, including a polybutenyl succinimide dispersant that is the reaction product of a polyamine and polybutenyl succinic anhydride (PIBSA) derived from polybutene having a number average molecular weight (M) of from about 1300 to about 2500 and a terminal vinylidene content of at least about 65%, and succinic and/or maleic anhydride via an ene maleation process, the PIBSA having a succinic anhydride (SA) functionality (F) of greater than 1.7 and less than about 2.5; and a detergent colloid including overbased detergent having a total base number (TBN) of from about 370 to about 1000 mg KOH/g derived from one or more surfactants selected from (i) sulfonate; (ii) phenate; and (iii) carboxylate surfactant; in which the mass ratio of the dispersant to the overbased detergent colloid in the concentrate is from about 0.5 to about 5.0; and the dispersant and overbased colloidal together constitute at least 28 mass %, of the concentrate.

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