Dispersant compositions having polyalkylene succinimides

• US 5,851,965 A
• Filed: 07/29/1997
• Issued: 12/22/1998
• Est. Priority Date: 12/01/1995
• Status: Expired due to Term

• Current Assignee: Chevron Chemical Company (Chevron Corp.)
• Original Assignee: Chevron Chemical Company (Chevron Corp.)
• Inventors: Harrison, James J., Ruhe, William R. Jr.
• Primary Examiner(s): Howard, Jacqueline V.
• Application Number:
  US08/902,427
• Time in Patent Office: 511 Days
• Field of Search: 508/192, 508/291
• US Class Current: 508/291
• CPC Class Codes: C08F 10/00 Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
• CPC Class Codes: C08F 8/32 by reaction with amines
• CPC Class Codes: C10L 1/143 mixtures of organic macromolecular compounds with organic non-macromolecular compounds
• CPC Class Codes: C10L 1/1608 Well defined compounds, e.g. hexane, benzene
• CPC Class Codes: C10L 1/1616 fractions, e.g. lubricants, solvents, naphta, bitumen, tars, terpentine
• CPC Class Codes: C10L 1/1824 mono-hydroxy
• CPC Class Codes: C10L 1/221 compounds of uncertain formula; reaction products where mixtures of compounds are obtained
• CPC Class Codes: C10L 1/234 Macromolecular compounds C10L1/221 takes precedence
• CPC Class Codes: C10L 1/236 obtained by reactions involving only carbon-to-carbon unsaturated bonds derivatives thereof C10L1/221 takes precedence
• CPC Class Codes: C10L 1/2364 homo- or copolymers derived from unsaturated compounds containing amide and/or imide groups C10L1/221 takes precedence
• CPC Class Codes: C10L 1/2366 homo- or copolymers derived from unsaturated compounds containing amine groups C10L1/221 takes precedence
• CPC Class Codes: C10L 1/2368 homo- or copolymers derived from unsaturated compounds containing heterocyclic compounds containing nitrogen in the ring C10L1/221 takes precedence
• CPC Class Codes: C10L 1/238 obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds C10L1/221 takes precedence
• CPC Class Codes: C10L 1/2383 Polyamines or polyimines, or derivatives thereof (poly)amines and imines; derivatives thereof (substituted by a macromolecular group containing 30C) C10L1/221 takes precedence
• CPC Class Codes: C10L 1/2493 compounds of uncertain formula; reactions of organic compounds (hydrocarbons, acids, esters) with sulfur or sulfur containing compounds
• CPC Class Codes: C10L 1/2691 Compounds of uncertain formula; reaction of organic compounds (hydrocarbons acids, esters) with Px Sy, Px Sy Halz or sulfur and phosphorus containing compounds
• CPC Class Codes: C10L 1/303 boron compounds
• CPC Class Codes: C10L 10/02 for reducing smoke development
• CPC Class Codes: C10L 10/04 for minimising corrosion or incrustation
• CPC Class Codes: C10L 10/08 for improving lubricity; for reducing wear
• CPC Class Codes: C10M 133/56 : Amides; Imides
• CPC Class Codes: C10M 149/06 : containing monomers having an unsaturated radical bound to an amido or imido group
• CPC Class Codes: C10M 161/00 : Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
• CPC Class Codes: C10M 2215/04 : having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2215/26 : Amines
• CPC Class Codes: C10M 2215/28 : Amides; Imides
• CPC Class Codes: C10M 2217/024 : containing monomers having an unsaturated radical bound to an amido or imido group
• CPC Class Codes: C10M 2217/046 : Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
• CPC Class Codes: C10M 2217/06 : Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
• CPC Class Codes: C10M 2227/061 : Esters derived from boron
• CPC Class Codes: C10N 2070/02 : Concentrating of additives

Abstract

A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an α-olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.0 moles of polyamine per equivalent of alkenyl or alkylsuccinic acid derivative plus unsaturated acidic reagent copolymer.

Claims

1. A dispersant composition comprising

(a) a polymer having the general formula:

##STR12## wherein;

W is a mixture of nitrogen-containing groups consisting of ##STR13## R is a polyalkyl or polyalkylene having a number average molecular weight of at least 1000,

R¹ is an alkyl having from 10 to 24 carbon atoms;

Z is a polyalkylene polyamine linking radical;

m is a whole integer of from 1 to 3

n is a whole integer of from 1 to 3;

x is a whole integer of from 1 to 100;

Int. is an initiating radical;

Ter. is a terminating group; and

wherein R² and R³ are independently hydrogen, alkyl, phenyl, or taken together are alkylene to give a ring group; and

(b) and at least one compound of the formulas;

##STR14##

2. The dispersant composition of claim 1 wherein R has a number average molecular weight of from 1800 to 3000.

3. The dispersant composition of claim 1 wherein R¹ is an alkyl having from 12 to 18 carbon atoms.

4. The dispersant composition of claim 1 wherein x is a whole integer of from 2 to 20.

5. A concentrate comprising from 20 to 60 wt. % of the composition of claim 1 from 80 to 40 wt. % of an organic diluent.

6. A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and a minor amount of the composition of claim 1.