Low ash or ashless two-cycle lubricating oil with reduced smoke generation

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(11)

EP 1 743 932 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.09.2007 Bulletin 2007/36

(43)	Date of publication A2:
	17.01.2007 Bulletin 2007/03

(21)	Application number: 06113832.7

(22)	Date of filing: 11.05.2006

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International Patent Classification (IPC):

C10M 107/08^(2006.01)
C10M 171/02^(2006.01)

C10M 111/04^(2006.01)
C10M 169/04^(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 NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

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Priority:

15.06.2005 US 153723

(71)	Applicant: Infineum International Limited
	Abingdon, Oxfordshire OX13 6BB (GB)

(72)	Inventors:
	L' Heureux, George C. New Jersey 07076 (US) Waddoups, Malcolm New Jersey 07090 (US)

(74)	Representative: Lewis, Pauline Therese et al
	Infineum International Ltd., P.O. Box 1, Milton Hill, Oxfordshire OX13 6BB Milton Hill, Oxfordshire OX13 6BB (GB)

(54)	Low ash or ashless two-cycle lubricating oil with reduced smoke generation

(57) A new low smoke two-cycle oil comprises highly reactive polyisobutylene ("HR-PIB"), a solvent additive package, and exhibits Kinematic viscosity of at least 6.5 mm²/s at 100°C and JASO M342 Smoke Index of at least 85. The new two-cycle oil is manufactured from an alternative starting material, which offers an efficient alternative as compared to polyisobutylene ("PIB"), which has traditionally been included in conventional two-cycle oils.

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