Treated Amine Additives for Engine Deposit Control
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Solution Overview
Problem
Current additives for lubricants and fuels lack improved deposit control and dispersancy without incurring a cost disadvantage, necessitating the development of more effective dispersants and detergents for engine performance enhancement.
Innovation Solution
A composition comprising a reaction product of a treated amine and specific compounds such as hydrocarbyl succinic anhydrides, Mannich adducts, ethylene-propylene copolymers, and acid or ester functionalized hydrocarbon polymers, which are oil soluble and have a molecular weight range of 900 to 50,000, providing improved dispersancy and viscosity index modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional dispersants (Mannich base, hydrocarbyl amine adducts, hydrocarbyl succinic acid derivatives) are used, then good dispersancy is achieved, but deposit control is insufficient and cost is high
Solution Approach 1:
The patent modifies the molecular weight parameter of dispersants to be in the range of 500-5000 (conventional dispersants typically have higher molecular weights). This parameter change results in improved deposit control while reducing manufacturing cost, as lower molecular weight dispersants can be produced more efficiently from the treated amine reactants
Solution Approach 2:
The patent creates composite dispersant molecules by reacting treated amines (which contain both hydrophobic and hydrophilic segments) with succinic acid or phenolic compounds. This composite structure provides both excellent dispersancy and deposit control in a single additive package, eliminating the need for multiple separate additives and reducing overall cost
2Reliability
If dispersant concentration is increased to improve deposit control, then dispersancy improves, but viscosity increases and other performance characteristics deteriorate
Solution Approach 1:
The patent optimizes the dispersant molecular weight to 500-5000 and controls the dispersant concentration in the lubricant to 0.1-5 weight percent. This parameter optimization achieves effective deposit control while minimizing viscosity increase, as the low molecular weight dispersants require lower concentrations to achieve the same protective effect compared to conventional high molecular weight dispersants
3Adaptability or versatility
If conventional additives are used, then basic lubricant functions are maintained, but performance across wide temperature ranges is limited
Solution Approach 1:
The patent develops dispersants with universal applicability across wide temperature ranges by incorporating both hydrophobic segments (from the treated amine backbone) and hydrophilic segments (from carboxylic acid or phenolic groups). This multi-functional structure allows the same dispersant to effectively protect against deposits and maintain lubricant properties at both high and low temperatures, eliminating the need for temperature-specific additive packages
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The described additives significantly enhance dispersancy, detergency, and viscosity index improvement in lubricants and fuels, effectively suspending thermal decomposition products and reducing deposits in engines, thereby improving engine performance and extending lubricant viscosity over a wider temperature range.
Implementation Method 1
The treated amine includes an aliphatic or aromatic amine containing at least one primary or secondary amino group reacted with acrylonitrile or at least one homologue thereof followed by reduction to the primary amine
Implementation Method 2
Dispersants solubilize sludge, resin and other combustion byproducts so that they can be removed from the system rather than being deposited on internal engine components
Implementation Method 3
viscosity index improvement in lubricants and fuels, effectively suspending thermal decomposition products and reducing deposits in engines, thereby improving engine performance and extending lubricant viscosity over a wider temperature range
Data Source
AI summary
A composition for use as an additive for fuels or lubricants. The composition includes a reaction product of a treated amine and a compound selected from the group consisting of hydrocarbyl succinic anhydrides, Mannich adducts derived from hydrocarbyl-substituted phenols reacted with formaldehydes, ethylene-propylene copolymers grafted with ethylenically unsaturated carboxylic groups, copolymers of unsaturated acids and polyolefins, and acid or ester functionalized hydrocarbon polymers. The reaction product is oil soluble and has a number average molecular weight ranging from about 900 to about 50,000 as determined by gel permeation chromatography. The treated amine includes an aliphatic or aromatic amine containing at least one primary or secondary amino group reacted with an aliphatic or aromatic nitrile and hydrogen.