Method for producing lubricant detergents

Details Method for producing lubricant detergents Method for producing lubricant detergents

2006-03-07

2006-03-07

Price, Elvis O. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

07009072

ABSTRACT:
The invention is a process for producing alkaline earth metal salicylates for use as lubricant detergents and to compositions prepared by the process. The process comprises two steps. Step 1 is the alkylation of salicylic acid is conducted using C14or greater linear α-olefins to produce alkyl salicylic acids in commercially acceptable yields. The alkylation conditions produce predominately mono-substituted para alkyl salicylic acids that are oil soluble. Step 2 is the oil soluble acid is subsequently neutralized and overbased by carbonation of lime using CO2in the presence of a promoter and a surfactant. The reaction mixture after overbasing is filtered and solvents are removed by distillation. Alternatively, alkyl salicylic acid can be reacted with a previously overbased alkaline earth sulfonate, e.g., calcium sulfonate, to produce alkaline earth salicylate salts comprising varying percentages of dispersed alkaline earth carbonate salts. In this method, no filtration of the end product is required, and, thus, it is commercially preferred.

REFERENCES:
patent: 1998750 (1935-04-01), Bruson et al.
patent: 2490444 (1949-12-01), Kooljman et al.
patent: 2865956 (1958-12-01), Ellis et al.
patent: 3337616 (1967-08-01), Keeding et al.
patent: 3410798 (1968-11-01), Cohen
patent: 3438899 (1969-04-01), Benoit, Jr.
patent: 3557198 (1971-01-01), Yekimik
patent: 3853956 (1974-12-01), Schmerling
patent: 3884949 (1975-05-01), Eicke et al.
patent: 4060535 (1977-11-01), Cinco
patent: 4544491 (1985-10-01), Tyson et al.
patent: 4810398 (1989-03-01), Van Kruchten et al.
patent: 4869837 (1989-09-01), van Wijngaarden et al.
patent: 4876020 (1989-10-01), Zon et al.
patent: 4910334 (1990-03-01), Stuart et al.
patent: 5030687 (1991-07-01), Leone
patent: 5049685 (1991-09-01), Saito
patent: 5225588 (1993-07-01), Senaratne et al.
patent: 5259966 (1993-11-01), Burke et al.
patent: 5415792 (1995-05-01), Campbell
patent: 5434293 (1995-07-01), Campbell
patent: 5451331 (1995-09-01), O'Connor et al.
patent: 5538650 (1996-07-01), Goto et al.
patent: 5652203 (1997-07-01), Asamori et al.
patent: 5734078 (1998-03-01), Feilden et al.
patent: 5792735 (1998-08-01), Cook et al.
patent: 6034039 (2000-03-01), Gomes et al.
patent: 6281179 (2001-08-01), Skinner et al.
patent: 6348438 (2002-02-01), Le Coent et al.
patent: 6417148 (2002-07-01), Skinner et al.
patent: 6429178 (2002-08-01), Skinner et al.
patent: 6429179 (2002-08-01), Skinner et al.
patent: 206596 (1939-08-01), None
patent: 689600 (1940-04-01), None
patent: 269619 (1989-07-01), None
patent: 293108 (1991-08-01), None
patent: 0351052 (1989-06-01), None
patent: 0370389 (1990-05-01), None
patent: 0771782 (1997-05-01), None

Affiliated with

Also associated with

Rating

Method for producing lubricant detergents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing lubricant detergents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing lubricant detergents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3539440