Gasoline detergent additive
First Claim
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1. A gasoline fuel composition comprising:
- (a) a major portion of a gasoline fuel and(b) a minor amount, as a gasoline detergent additive, of a Mannich coupled product of bis-polyisobutylene succinimide of an amine, prepared by;
(i) reacting an alkenyl succinimide acid anhydride with an amine to form a bis-succinimide;
(ii) treating the bis-succinimide with nonylphenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product; and
(iii) recovering the product Mannich phenol coupled bis-succinimide.
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Abstract
A gasoline composition comprising:
(a) a major portion of a gasoline fuel, and
(b) a minor amount, as a gasoline detergent additive, of a Mannich coupled product of bis-polyisobutylene succinimide of an amine, prepared by:
(i) reacting an alkenyl succinimide acid anhydride with an amine to form a bis-succinimide;
(ii) treating the bis-succinimide with nonylphenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product; and
(iii) recovering the product Mannich phenol coupled bis-succinimide.
31 Citations
5 Claims
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1. A gasoline fuel composition comprising:
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(a) a major portion of a gasoline fuel and (b) a minor amount, as a gasoline detergent additive, of a Mannich coupled product of bis-polyisobutylene succinimide of an amine, prepared by; (i) reacting an alkenyl succinimide acid anhydride with an amine to form a bis-succinimide; (ii) treating the bis-succinimide with nonylphenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product; and (iii) recovering the product Mannich phenol coupled bis-succinimide. - View Dependent Claims (2, 4, 5)
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3. The gasoline fuel composition of claim wherein polyisobutenyl groups of said alkenyl succinic acid anhydride has a molecular weight ranging from about 100 to about 3000.
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Current AssigneeTexaco Incorporated (Chevron Corp.)
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Original AssigneeTexaco Incorporated (Chevron Corp.)
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InventorsNalesnik, Theodore E., Hayden, Thomas E., Benfaremo, Nicholas, Herbstman, Sheldon
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Primary Examiner(s)Howard, Jacqueline V.
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Application NumberUS07/590,741Time in Patent Office281 DaysField of Search44/347, 44/348US Class Current44/347CPC Class CodesC10L 1/2383 Polyamines or polyimines, o...
