Lactone modified polymeric amines useful as oil soluble dispersant additives
AssigneeExxon Chemical Patents Inc.
InventorsAntonio Gutierrez, Robert D. Lundberg
Life of this patent
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Abstract
Hydroxyl terminated polymeric C.sub.5 -C.sub.9 lactone adducts are made by reacting a C.sub.5 -C.sub.9 lactone with the reaction product of a C.sub.2 -C.sub.10 olefin polymer or a halogenated derivative thereof having a number average molecular weight of 300 to about 10,000 with an amine containing from 2 to 60 total carbon atoms and from 1 to 12 nitrogen atoms. The resulting adducts are useful per se as oil soluble dispersant additives. They are also useful in fuel and lubricating oil compositions, as well as in concentrates and additive packages.
Claims30
A hydroxyl terminated polymeric adduct of a C.sub.5 -C.sub.9 lactone and a polyalkylene amine material useful as an oil additive, said adduct being formed by reacting a C.sub.5 -C.sub.9 lactone with a polyalkylene amine at a temperature of from about 30 to about 200.degree. C. for a period sufficient to effect ring opening polymerization of said C.sub.5 -C.sub.9 lactone, said polyalkylene amine, in turn, being formed by reacting an olefin polymer material comprising a major molar amount of a C.sub.2 -C.sub.10 monoolefin and having a number average molecular weight of about 300 to about 10,000 or a halogenated derivative thereof with an amine compound that is reactive therewith to add amino groups onto said olefin polymer material, said amine compound being selected from the group consisting of amines of about 2 to about 60 total carbon atoms and about 1 to 12 nitrogen atoms in the amine molecule, and said adduct containing the unit ##STR6## where z is a number from 4 to 8 and m, which represents the degree of polymerization of said C.sub.5 -C.sub.9 lactone, has an average value of from about 0.2 to about 100.
An oil soluble dispersant useful as an oil additive, comprising the product of a reaction mixture comprising as reactants:
- (I) the reaction of (a) an olefin polymer of a C.sub.2 to C.sub.10 monoolefin having a number average molecular weight of about 300 to 10,000 or a halogenated derivative thereof and (b) an amine having from about 2 to about 60 total carbon atoms and about 1to 12 nitrogen atoms in the amine molecule;
- and
- (II) a C.sub.5 -C.sub.9 lactone, wherein said C.sub.5 -C.sub.9 lactone has undergone ring opening polymerization and there are, on the average, from about 0.2 to about 100 molar equivalents of C.sub.5 -C.sub.9 lactone derived moieties per molar equivalent of said reaction product I used in the reaction.
An oil soluble reaction product useful as an oil additive, which comprises:
- (a) polymer or halogenated derivative thereof consisting essentially of C.sub.2 to C.sub.10 monoolefin, said polymer being of 300 to 10,000 number average molecular weight;
- (b) amine containing 2 to 60 carbon atoms and 1 to 12 amino groups, and
- (c) C.sub.5 -C.sub.9 lactone, wherein (a) is first reacted with (b) to add lactone-reactive amino groups to said polymer or halogenated derivative thereof, and then the resulting product is reacted with (c) at a temperature of from about 30.degree. to about 200.degree. C. for a period sufficient to effect ring opening polymerization of said C.sub.5 -C.sub.9 lactone, and wherein there are, on the average, from about 0.2 to about 100 molar proportions of (c) reacted per molar proportion of said oil soluble reaction product.
Dependencies are inferred from the claim text.