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Lactone-modified, Mannich base dispersant additives useful in oleaginous compositions

  • US 4,820,432 A
  • Filed: 07/24/1987
  • Issued: 04/11/1989
  • Est. Priority Date: 07/24/1987
  • Status: Expired due to Fees
First Claim
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1. A poly(C5 -C9 lactone) modified Mannich base hydrocarbyl substituted C4 -C10 dicarboxylic acid producing material useful as an oil additive and formed by reacting a C5 -C9 lactone, an amine, an aldehyde, an N-hydroxyaryl amine and a hydrocarbyl substituted C4 -C10 dicarboxylic acid producing material, said hydrocarbyl substituted C4 -C10 dicarboxylic acid producing material being formed by reacting an olefin polymer of a C2 -C10 monoolefin having a number average molecular weight of about 700 to about 10,000 and a C4 -C10 monounsaturated dicarboxylic acid material, wherein there is an average of 0.7 to about 2.0 dicarboxylic producing moieties per molecule of said olefin polymer used in the reaction, and said poly (C5 -C9 lactone) modified Mannich base adduct containing the unit ##STR21## wherein m has a average value of from 0.2 to about 100, and z is 4 to 8.

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