Rejuvenation and/or extension of the lifetime of frictional performance in transmission fluids

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United States of America Patent

PATENT NO 11441094
SERIAL NO

17062456

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Abstract

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A booster additive concentrate may advantageously contain: (a) an anti-wear mixture of two or more phosphite/phosphate compounds and one or more ether/thioether compounds; (b) an ashless dispersant; (c) a calcium-containing detergent, such as an overbased calcium phenate; (d) ≥2 friction modifiers, at least one of which comprises a polyalkylene polyamine succinimide derivative; (e) optionally a corrosion inhibitor; and (f) a lubricating oil basestock. Based on these additive components, the booster additive concentrate may exhibit specific contents of B/Ca/P and may contain minimal or substantially no additional antioxidants. Lubricant compositions can be made from the booster additive concentrates and a fresh/used lubricant oil composition “diluent,” which can rejuvenate the diluent. Such lubricant compositions can have advantageous anti-shudder durability (ASD) lifetimes and other frictional properties. In particular, such concentrates/compositions can offer superior lubrication when used in vehicles with continuously variable transmissions (CVTs).

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Patent Owner(s)

Patent OwnerAddress
INFINEUM INTERNATIONAL LIMITEDMILTON HILL BUSINESS AND TECHNOLOGY CENTRE MILTON HILL ABINGDON OXFORDSHIRE OX13 6BD

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aritake, Takashi Shizuoka, JP 1 1
Katou, Gou Shizuoka, JP 3 13
Kim, Hahn Soo Basking Ridge, US 4 7
Lin, Thomas Linden, US 54 732
Maeda, Makoto Shizuoka, JP 78 613
Mogi, Yasuhiro Shizuoka, JP 17 167
Morisato, Hiroshi Tokyo, JP 1 1
Saito, Hirokazu Tokyo, JP 58 560

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