Lubricating oil providing enhanced piston cleanliness

(19)

(11)

EP 1 942 177 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	23.06.2010 Bulletin 2010/25

(43)	Date of publication A2:
	09.07.2008 Bulletin 2008/28

(21)	Application number: 07254942.1

(22)	Date of filing: 19.12.2007

(51)

International Patent Classification (IPC):

C10M 163/00^(2006.01)
C10N 10/02^(2006.01)
C10N 30/04^(2006.01)
C10N 40/25^(2006.01)
C10N 10/12^(2006.01)
C10N 20/04^(2006.01)

C10M 167/00^(2006.01)
C10N 10/12^(2006.01)
C10N 20/04^(2006.01)
C10N 10/02^(2006.01)
C10N 30/04^(2006.01)
C10N 40/25^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

(30)

Priority:

19.12.2006 US 613015

(71)	Applicant: Chevron Oronite Company LLC
	San Ramon, CA 94583-2324 (US)

(72)	Inventors:
	Van Leeuwen, Jeroen 2993 DX Barendrecht (NL) Takeuchi, Yoshitaka Haibara-gun Shizuoka (JP)

(74)	Representative: Nash, David Allan
	Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)

(54)	Lubricating oil providing enhanced piston cleanliness

(57) Provided are formulations, methods of making, and methods of using one or more reaction products of polyisobutylenes and monounsaturated acylating agents of the present invention in a low sulfur, low sulfated ash, and low phosphorus lubricant to enhance piston cleanliness in internal combustion engines.

Search report