Preparing a high viscosity index, low branch index dewaxed oil

Details Preparing a high viscosity index, low branch index dewaxed oil Preparing a high viscosity index, low branch index dewaxed oil

2006-07-11

2006-07-11

Griffin, Walter D. (Department: 1764)

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Chemical treatment

C208S028000, C208S033000, C208S095000, C208S096000, C208S097000

Reexamination Certificate

active

07074320

ABSTRACT:
An integrated process for preparing a lubricating oil base stock includes an isomerization step followed by a solvent dewaxing step. A waxy feed is isomerized to an intermediate pore point, which is at least 6° C. above a target pour point, over a select molecular sieve having specified pore properties. The isomerized oil is then solvent dewaxed to a very low pour point. This process produces a dewaxed lubricating oil base stock which has an exceptionally high viscosity index.

REFERENCES:
patent: 4259170 (1981-03-01), Graham et al.
patent: 4440871 (1984-04-01), Lok et al.
patent: 4501926 (1985-02-01), LaPierre et al.
patent: 4574043 (1986-03-01), Chester et al.
patent: 4678556 (1987-07-01), Hicks et al.
patent: 4859311 (1989-08-01), Miller
patent: 4867862 (1989-09-01), Ziemer
patent: 4880760 (1989-11-01), Pellet et al.
patent: 4906351 (1990-03-01), Pellet et al.
patent: 4911821 (1990-03-01), Katzer et al.
patent: 4919788 (1990-04-01), Chen et al.
patent: 4921594 (1990-05-01), Miller
patent: 4960504 (1990-10-01), Pellet et al.
patent: 4975177 (1990-12-01), Garwood et al.
patent: 5037528 (1991-08-01), Garwood et al.
patent: 5082986 (1992-01-01), Miller
patent: 5113030 (1992-05-01), Chen et al.
patent: 5135638 (1992-08-01), Miller
patent: 5149421 (1992-09-01), Miller
patent: 5246566 (1993-09-01), Miller
patent: 5264116 (1993-11-01), Apelian et al.
patent: 5282958 (1994-02-01), Santilli et al.
patent: 5288395 (1994-02-01), Marler et al.
patent: 5292426 (1994-03-01), Holland et al.
patent: 5302279 (1994-04-01), Degnan et al.
patent: 5362378 (1994-11-01), Borghard et al.
patent: 5376260 (1994-12-01), Santilli et al.
patent: 5413695 (1995-05-01), Miller
patent: 5462650 (1995-10-01), Takito et al.
patent: 5643440 (1997-07-01), Borghard et al.
patent: 5833837 (1998-11-01), Miller
patent: 5885438 (1999-03-01), Apelian et al.
patent: 6090989 (2000-07-01), Trewella et al.
patent: 6663768 (2003-12-01), Miller
patent: 0 225 053 (1992-07-01), None
patent: 0 464 546 (1995-07-01), None
patent: WO 96/07715 (1996-03-01), None
patent: WO 96/13563 (1996-05-01), None
patent: WO 96/26993 (1996-09-01), None
patent: WO 97/26989 (1997-07-01), None
Baker, C.L. and McGuiness, M.P., “Mobil Lube Dewaxing Technologies,” NPRA Meeting (1995) Paper No. AM-95-56.

Affiliated with

Also associated with

Rating

Preparing a high viscosity index, low branch index dewaxed oil does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparing a high viscosity index, low branch index dewaxed oil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparing a high viscosity index, low branch index dewaxed oil will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3532425