Dispersant additives mixtures for oleaginous compositions

Details Dispersant additives mixtures for oleaginous compositions Dispersant additives mixtures for oleaginous compositions

1987-09-09

1989-09-05

Dixon, Jr., William R.

Compositions

Electrolytes for electrical devices

44 72, 252 496, 252 56D, C10M12900, C10M13300

Patent

active

048636240

ABSTRACT:
Novel dispersant mixtures are provided, having improved lubricating oil performance characteristics, comprising nitrogen or ester containing dispersants selected from the group consisting of oil soluble salts, amides, imides, oxazoline and esters or mixtures thereof, wherein a first dispersant comprises a long chain hydrocarbon substituted mono- and dicarboxylic acid or their anhydrides derived from polymers of C.sub.2 to C.sub.10 monoolefins wherein the polymer has a number average molecular weight of at least about 1300 and wherein the second dispersant component is derived from such polymers having a number average molecular weight of from about 700 to 1150. The relatively high molecular weight dispersant is provided with from about 1.05 to 1.25 moles per mole of polyolefin of an alpha or beta unsaturated C.sub.4 to C.sub.10 dicarboxylic acid or anhydride or ester thereof. The relatively lower molecular weight dispersant is provided with from about 1.2 to 2.0 moles per mole of polyolefin of an alpha or beta unsaturated C.sub.4 to C.sub.10 dicarboxylic acid, anhydride or ester thereof. It has been found that mixtures of such high molecular weight-low functionality dispersants and low molecular weight-high functionality dispersants provides a dispersant, suitable for use in oleaginous materials such as lubricating oils, which provide surprisingly improved engine performance properties.

REFERENCES:
patent: Re26330 (1968-01-01), Colfer
patent: 3087936 (1963-04-01), Le Suer
patent: 3131150 (1964-04-01), Stuart et al.
patent: 3154560 (1964-10-01), Osuch
patent: 3172892 (1965-03-01), Le Suer et al.
patent: 3198736 (1965-08-01), Henderson
patent: 3215707 (1965-11-01), Rense
patent: 3219666 (1965-11-01), Norman et al.
patent: 3231587 (1966-01-01), Rense
patent: 3235484 (1966-02-01), Colfer
patent: 3254025 (1966-05-01), LeSuer
patent: 3269946 (1966-08-01), Wiese
patent: 3272743 (1966-09-01), Norman et al.
patent: 3272746 (1966-09-01), Le Suer et al.
patent: 3278550 (1966-10-01), Norman et al.
patent: 3284409 (1966-11-01), Dorer
patent: 3284410 (1966-11-01), Meinhardt
patent: 3288714 (1966-11-01), Osuch
patent: 3401118 (1968-09-01), Benoir
patent: 3403102 (1968-09-01), Le Suer
patent: 3562159 (1971-02-01), Mastin
patent: 3576743 (1971-04-01), Widmer et al.
patent: 3632510 (1972-01-01), Le Suer
patent: 3755169 (1973-08-01), Adams et al.
patent: 3806456 (1974-04-01), Vogel
patent: 3836470 (1974-09-01), Miller
patent: 3836471 (1974-09-01), Miller
patent: 3838050 (1974-09-01), Miller
patent: 3838052 (1974-09-01), Miller
patent: 3868330 (1975-02-01), Meinhardt et al.
patent: 3879308 (1975-04-01), Miller
patent: 3912764 (1975-10-01), Palmer
patent: 3927041 (1975-02-01), Cengel et al.
patent: 3936480 (1976-02-01), Demoures et al.
patent: 3950341 (1976-04-01), Otamoto et al.
patent: 3960889 (1976-06-01), Cullen et al.
patent: 4062786 (1977-12-01), Brois et al.
patent: 4110349 (1978-08-01), Cohen
patent: 4113639 (1978-09-01), Lonstrup et al.
patent: 4116876 (1978-09-01), Brois et al.
patent: 4123373 (1978-10-01), Brois et al.
patent: 4151173 (1979-04-01), Vogel
patent: 4195976 (1980-04-01), Ryer et al.
patent: 4234435 (1980-11-01), Meinhardt et al.
patent: 4502970 (1985-03-01), Schetelich et al.
patent: 4502971 (1985-03-01), Robson
European Search Report (EP 87 30 9003).
E. S. Forbes et al., "The Mechanism of Action of Polyisobutenyl Succinimide Lubricating Oil Additives", Tribology, vol. 5, No. 2, 72-77 (Apr. 1972).

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