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Lactone modified polymeric amines useful as oil soluble dispersant additives

  • US 4,866,142 A
  • Filed: 10/07/1986
  • Issued: 09/12/1989
  • Est. Priority Date: 10/07/1986
  • Status: Expired due to Term
First Claim
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1. A hydroxyl terminated polymeric adduct of a C5 -C9 lactone and a polyalkylene amine material useful as an oil additive, said adduct being formed by reacting a C5 -C9 lactone with a polyalkylene amine at a temperature of from about 30 to about 200°

  • C. for a period sufficient to effect ring opening polymerization of said C5 -C9 lactone, said polyalkylene amine, in turn, being formed by reacting an olefin polymer material comprising a major molar amount of a C2 -C10 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 C5 -C9 lactone, has an average value of from about 0.2 to about 100.

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