Mobil Oil Corporation

John C Nnadi

Israel J Heilweil

Phillip S Landis

Margaret H McIntyre

As a new class of multifunctional additives for industrial fluids, the compounds having the following general formula: ##STR1## IN WHICH EACH X and Y represents a heterocyclic nitrogen radical and may be the same or different for each occurrence of X and Y; Z is a basic nitrogen-containing radical; n is 0 or an integer of at least 1, preferably 1 to 10; and A, B, C, and D are linked groups derived from compounds which may provide desired functions, such as detergent, antioxidant, and antiwear properties, or indirectly useful functions, such as adsorbency. At least one of A, B, C, or D is amino or anilino or is derived from an alkenylsuccinimide or an alkyl lactam or tetrahydropyrrolidine, or alkyl-substituted Mannich base, having at least 8 carbon atoms in the alkenyl or alkyl radical, or combinations of any of these. The reaction between these products and metal compounds particularly alkali and alkaline earth metal compounds provides more improved properties.

Multifunctional substituted triazine functional fluid additives and

Multifunctional additives

Lubricant compositions containing a dispersancy improving and antirust amount of the product obtained by reacting an alkenylsuccinic anhydride having from about 20 to about 500 carbon atoms with a member of the group consisting of: (A) an alkylene polyamine having the structure

Lubricant compositions containing multifunctional additives

Using a novel process of one or more combined steps, modified novel block copolymers are prepared by alkylating or hydrogenating a block copolymer precursor containing at least two segments, in which segment A consists of a styrene polymer, either styrene alone or a hydrogenated random butadiene-styrene copolymer and from 1% to about 50% by weight of segment B being an alkylene oxide or sulfide copolymerized with the first segment as an AB or BAB copolymer. These novel copolymers perform as multifunctional additives in industrial organic compositions, both hydrocarbon fluids, such as petroleum-derived, and non-hydrocarbon, or synthetic fluids, providing such utility as detergency, emulsification and viscosity index improvement. These copolymers have molecular weights in the range of from about 1,000 to 500,000. The copolymers are particularly useful in lubricating oils, greases and fuels, especially cross-graded lubricants, crude oils, diesel oils, gasoline and fuel oils. Copolymers capped with metal diisocyanate have excellent thermal and oxidative stability.

Modified block copolymers and process of preparing the same

Oil-soluble overbased metallic compounds of polyarylamine sulfides and polyarylamine-phenol sulfides are provided. Said overbased compounds function as dispersants and lubricants are stabilized against oxidation and have their wear protection properties improved by adding thereto a property improving amount of one or more of said overbased compounds.

Overbased metal complexes and compositions thereof with lubricants

Oil-soluble overbased polyarylamine-arylhydroxy (alkoxy) sulfides and overbased organic and inorganic metallic salts, complexes, mixed salts and mixed salt complexes of polyarylamine-arylhydroxy (alkoxy) sulfides are provided. Said overbased compounds function as high temperature detergents and dispersants and lubricants are stabilized against oxidation and have their wear protection properties improved by adding thereto a property improving amount of one or more of said compounds.

Overbased polyarylamine-arylhydroxy (alkoxy) sulfides and lubricant

Metallic compounds of polyarylamine sulfides and polyarylamine-phenol sulfides are provided. Said compounds function as dispersants and lubricants are stabilized against oxidation and have their wear protection properties improved by adding thereto a property improving amount of one or more of said compounds.

Organometallic compounds and compositions thereof with lubricants

Additives that are useful dispersants when placed in lubricants are prepared by (1) reacting an amine or a hydroxy amino compound, such as an amino alcohol, with a halomaleic anhydride and (2) reacting this product with an alkali or alkaline earth metal derivative of a substituted hydroxyaromatic compound.

Substituted maleimide lubricant additives and lubricant compositions

Organic compositions are provided containing anti-rust amounts of esters of adducts of benzotriazole and unsaturated dicarboxylic acids or anhydrides thereof.

Organic lubricating compositions containing esters of benzotriazole

As a new class of multifunctional additives, for imparting dispersancy and viscosity improving properties to lubricant compositions, ether-linked polymers having the structure: ##STR1## in which: A and B may be the same, i.e., B=A or different substituents and are individually selected from the group consisting of hydrogen, alkyl, alkenyl, aryl, hydroxy and amino derivatives thereof, carboxy, alkyl carboxy, hydroxy, phosphono, phosphato, sulfonato, mercapto and a nitrogen-containing group having a chain length from 1 to 500 carbon atoms, x, y and z are zero or a whole number and at least one of x and y is a whole number, and C is ##STR2##

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Glassboro, NJ, United States of America

John C Nnadi