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Lubricating oil dispersant and viton seal additives

  • US 4,636,322 A
  • Filed: 11/04/1985
  • Issued: 01/13/1987
  • Est. Priority Date: 11/04/1985
  • Status: Expired due to Term
First Claim
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1. A lubricating oil composition comprising a major portion of a lubricating oil and a minor dispersant amount of a reaction product prepared by the process which comprises:

  • (a) reacting a polyamine with an alkenyl succinic acid anhydride to form a bis-alkenyl succinimide;

    (b) acylating said bis-alkenyl-succinimide with glycolic acid to form a partially glycolated bis-alkenyl succinimide;

    (c) adding an excess of an aldehyde to said partially glycolated bis-alkenyl succinimide to form an iminium salt of the glycolated bis-alkenyl succinimide;

    (d) adding a phenol to said iminium salt, thereby forming a Mannich phenol coupled glycamide bis-alkenyl succinimide; and

    (e) recovering said Mannich phenol coupled glycamide bis-alkenyl succinimide.

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