Polyalkylene polysuccinimides and post-treated derivatives thereof
AssigneeChevron Chemical Company
InventorsJames J. Harrison, William R. Ruhe, Jr.
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Abstract
A polysuccinimide 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 140 to 3000. The unsaturated acidic reagent copolymer has an average degree of polymerization of from 2 to 20, and is a copolymer of an unsaturated acidic reagent and an olefin having a Mn of at least 1000. The polyamine has at least three nitrogen atoms and has from 4 to 20 carbon atoms.
Claims5
A fuel oil composition comprising a major amount of hydrocarbons boiling in the gasoline or diesel fuel range and from 10 to 10,000 parts per million parts of a polysuccinimide composition prepared by reacting a mixture under reactive conditions, wherein the mixture comprises:
- (a) an alkenyl or alkylsuccinic acid derivative, wherein the alkenyl or alkyl substituent has a Mn of from 140 to 3000;
- (b) an unsaturated acidic reagent copolymer of
- (1) an unsaturated acidic reagent and
- (2) an olefin having a Mn of at least 1000, wherein the copolymer has an average degree of polymerization of from 2 to 20:
- and
- (c) a polyamine having at least three nitrogen atoms and 4 to 20 carbon atoms.
A polysuccinimide having the formula:
- ##STR13## wherein:
- W is a nitrogen-containing group which is a mixture of ##STR14## R is a polyalkyl or polyalkylene having a number average molecular weight of about 140 to 3000;
- R.sup.1 is an alkyl having a number average molecular weight of at least 1000;
- R.sup.8 is C.sub.1 to C.sub.6 alkyl;
- 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 2 to 20;
- Int. is an initiating radical;
- Ter. is a terminating group;
- and
- wherein R.sup.2 and R.sup.3 are independently hydrogen, alkyl, phenyl, or taken together are alkylene to give a ring group.
Dependencies are inferred from the claim text.