Thomas D Nichols

US Patent:

7422161, Sep 9, 2008

Filed:

Mar 30, 2006

Appl. No.:

11/393271

Inventors:

Peter W. Hou - Chesterfield VA, US
Dennis J. Malfer - Glen Allen VA, US
Thomas William Nichols - Richmond VA, US

Assignee:

Afton Chemical Corporation - Richmond VA

International Classification:

B05B 1/28
C10L 1/22

US Classification:

239104, 44415

Abstract:

Treated port fuel injectors are disclosed. The treated port fuel injectors have a surface coated with a film which resists or limits deposit formation on the injector surface. The film may be formed by contacting the port fuel injector with: (i) a succinimide compound comprising the reaction product of polyisobutylene-substituted succinic anhydride and a polyamine; (ii) a Mannich base detergent; and (iii) a spark ignition fuel. The treated port fuel injectors may also include a film formed by contacting the port fuel injector with: (i) a Mannich condensation reaction product of a polyamine having a sterically-hindered primary amino group, a hydrocarbyl-substituted hydroxyaromatic compound, and an aldehyde; and (ii) a spark ignition fuel. Methods of forming films on port fuel injector surfaces are also disclosed.

US Patent:

20080289249, Nov 27, 2008

Filed:

May 22, 2007

Appl. No.:

11/752068

Inventors:

Peter Wangqi Hou - Chesterfield VA, US
William J. Colucci - Glen Allen VA, US
Thomas William Nichols - Richmond VA, US

International Classification:

C10L 1/224

US Classification:

44347

Abstract:

The present disclosure is directed to a fuel composition comprising a deposit-modifying effective amount of a hydrocarbyl-substituted succinimide; a detergent; and a fuel. A method for reducing deposit formation is also disclosed.

US Patent:

20110010985, Jan 20, 2011

Filed:

Sep 21, 2010

Appl. No.:

12/886841

Inventors:

Peter Wangqi Hou - Chesterfield VA, US
William J. Colucci - Glen Allen VA, US
Thomas William Nichols - Richmond VA, US

International Classification:

C07D 207/40
C10L 1/232

US Classification:

44347, 548545

Abstract:

The present disclosure is directed to a fuel composition comprising a deposit-modifying effective amount of a hydrocarbyl-substituted succinimide; a detergent; and a fuel. A method for reducing deposit formation is also disclosed.