A method for stabilizing hydroisomerates

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EP 0 323 724 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	28.03.1990 Bulletin 1990/13

(43)	Date of publication A2:
	12.07.1989 Bulletin 1989/28

(21)	Application number: 88311988.5

(22)	Date of filing: 16.12.1988

(51)	International Patent Classification (IPC)⁴: C10G 65/04, C10G 45/10

(84)	Designated Contracting States:
	BE DE ES FR GB IT NL

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Priority:

18.12.1987 US 135149

(71)	Applicant: EXXON RESEARCH AND ENGINEERING COMPANY
	Florham Park, New Jersey 07932-0390 (US)

(72)	Inventors:
	Cody, Ian Alfred Clearwater Ontario N7T 7H6 (CA) Eadie, Donald T. North Vancouver British Columbia V7N 4B9 (CA) Hamner, Glen Porter deceased (US) MacDonald, John MacKillop Sarnia Ontario N7T 6V7 (CA)

(74)	Representative: Somers, Harold Arnold et al
	ESSO Engineering (Europe) Ltd. Patents & Licences Mailpoint 72 Esso House Ermyn Way Leatherhead, Surrey KT22 8XE Leatherhead, Surrey KT22 8XE (GB)

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References cited: :


	Remarks:
	A request for correction of the description has been filed pursuant to Rule 88 EPC. A decision on the request will be taken during the proceedings before the Examining Division (Guidelines for Examination in the EPO, A-V, 2.2).

(54)	A method for stabilizing hydroisomerates

(57) A method is described for rendering total liquid product hydroisomerates daylight stable and improving their oxidation stability, which method involves treating the hydroisomerate total liquid product (6) with a Group VIII metal on refractory metal oxide catalyst or Group VIII metal on halogenated refractory metal oxide catalyst under mild conditions (7), which conditions are a temperature in the range of 170 to 270°C, a pressure in the range of 300 to 1500 psi (3.4 to 6.9 MPa) H₂, 0.25 to 10 v/v/hr and 500 to 10,000 SCF/B (178 to 890 liters H₂/liter oil) H₂.

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