Ashless Lubricating Oil Additive Composition for Long-Term Friction Reduction
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Solution Overview
Problem
Conventional oiliness agent-based friction modifiers in lubricating oils do not provide sufficient friction reducing performance over the long term.
Innovation Solution
A lubricating oil additive composition comprising a Broensted acid salt of a monoamide of a C6-30 linear or branched chain fatty acid and an alkanolamine oligomer, which is used in combination with a lubricant base oil to form a lubricating oil composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organic molybdenum-based friction modifiers (MoDTC, MoDTP) are used, then initial friction reducing effect is superior, but long-term friction reducing performance is limited and ash content prevents oil reuse
Solution Approach 1:
The patent changes the chemical composition parameters by using oiliness agent-based friction modifiers (fatty acid amides and alkanolamine oligomers) instead of organic molybdenum-based additives. This parameter change eliminates ash content while maintaining friction reducing performance, and the specific molecular structure parameters of the amide compounds provide sustained effectiveness over long periods.
Solution Approach 2:
The patent employs oiliness agent-based friction modifiers that can be easily degraded and removed during oil recycling processes. These additives sacrifice themselves by forming protective films on metal surfaces temporarily, then decompose into harmless substances, enabling complete oil reuse without ash accumulation, unlike persistent organic molybdenum compounds.
2Reliability
If organic molybdenum-based friction modifiers are used, then friction reducing effect is achieved, but ash content makes oil reuse difficult
Solution Approach 1:
The patent converts the potential harm of additive decomposition into a benefit by designing oiliness agent-based friction modifiers that decompose completely into non-ash residues. The decomposition products are harmless substances that do not contaminate the oil, transforming the usual harmful ash content into a beneficial property enabling unlimited oil reuse.
Solution Approach 2:
The friction modifiers are designed as temporary, disposable substances that perform their friction reducing function and then naturally decompose without leaving persistent ash residues. This allows the lubricating oil to be fully recycled and reused multiple times, eliminating the ash content problem associated with conventional additives.
3Object-generated harmful factors
If conventional oiliness agent-based friction modifiers are used, then ashless property is achieved, but friction reducing performance is insufficient
Solution Approach 1:
The patent creates a composite friction modification system by combining two different oiliness agent-based compounds: fatty acid amides and alkanolamine oligomers. This composite approach synergistically enhances friction reducing performance while maintaining the ashless property, overcoming the limitation of conventional single-component oiliness agents.
Solution Approach 2:
The patent merges two distinct chemical compounds (fatty acid amides and alkanolamine oligomers) into a single lubricating oil formulation. This combination allows both compounds to work together, providing superior friction reducing performance that neither compound could achieve alone, while both maintain the ashless characteristic.
Data Source
AI summary
A lubricating oil additive composition including: (i) a Broensted acid salt of at least one first amide compound, the Broensted acid salt being a salt of the first amide compound and a Broensted acid, the first amide compound being a monoamide of at least one fatty acid (a1), and at least one amine compound (a2), the amine compound (a2) being an oligomer of at least one alkanolamine (a3) represented by the general formula (1): in the formula, n is 1 or 2; R1 is C1-4 linear chain alkylene or C3-10 branched chain alkylene, the C3-10 branched chain alkylene having a main chain, the main chain having a carbon number of 2; and when n is 2, a plurality of R1's may be the same, and may be different from each other.