Ionic Liquid Lubricant Additives for Solubility and Wear Reduction
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Solution Overview
Problem
Existing lubricant compositions face challenges with ionic liquids that have limited solubility and stability in certain lubricant base oils, leading to reduced anti-friction and anti-wear properties.
Innovation Solution
Incorporation of novel ionic liquid salts with binuclear molybdenum-containing metallate anions, such as [Mo2A3Cd]2-, into lubricating oil and grease compositions to enhance solubility and stability while maintaining or improving anti-wear and friction reduction properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing ionic liquids are used as friction reduction and anti-wear additives, then anti-friction and anti-wear properties are provided, but solubility and stability in certain lubricant base oils are limited
Solution Approach 1:
The patent changes the chemical parameters of the ionic liquid by introducing binuclear molybdenum-containing metallate anions with specific formulas [Mo2A3Cd]2- where A and C are O or S. This structural modification with binuclear molybdenum cores and variable oxygen/sulfur content optimizes both solubility in lubricant base oils and stability while maintaining anti-wear and friction reduction properties
Solution Approach 2:
The patent creates composite ionic liquid structures combining organic cations with binuclear molybdenum metallate anions. This composite approach integrates the lubricity-providing molybdenum core with organic components that enhance solubility and stability in various lubricant base oils, achieving multiple properties simultaneously
2Stability of the object's composition
If ionic liquid salts with binuclear molybdenum-containing metallate anions are incorporated into lubricant compositions, then solubility and stability are improved, but the complexity of the additive structure increases
Solution Approach 1:
The patent systematically varies parameters within the binuclear molybdenum metallate anion structure, specifically the oxidation state of molybdenum and the ratio of oxygen to sulfur atoms. This controlled parameter variation allows optimization of solubility and stability while managing structural complexity through defined chemical formulas [Mo2A3Cd]2-
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 novel ionic liquid salts provide improved solubility and stability, resulting in enhanced anti-wear and friction reduction performance compared to existing ionic liquids, ensuring effective lubrication in various applications.
Implementation Method 1
Friction reduction additives are generally included in lubricating oil compositions to reduce the friction between moving parts of the system. An example of commercially available friction reduction additive is the compound known as molybdenum dithiocarbamate MoDTC
Implementation Method 2
Lubricant compositions generally comprise a base oil of lubricating viscosity together with one or more additives to deliver properties such as reduced friction and wear
Data Source
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AI summary
The present invention relates to additives for reducing friction and wear in lubricant compositions such as lubricating oils and greases. In particular, the present invention relates to novel salts and their use in lubricating oil compositions and grease compositions for reducing friction and wear.