Solid-in-Oil Complex for Lubricating Oil Additives
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Solution Overview
Problem
Current lubricating oil additives face limitations due to the requirement for oil solubility, restricting the use of less-oil-soluble substances, which are not effectively utilized despite their potential benefits in advanced automotive and industrial applications.
Innovation Solution
A solid-in-oil-type complex is developed, incorporating less-oil-soluble substances coated with surfactants, allowing these substances to be dispersed in lubricating oil and released as needed, enhancing their functionality without requiring oil solubility modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a substance with polar group moiety is used as lubricating oil additive, then it can form adsorption film on metal surface and perform extreme pressure function, but it requires introduction of oleophilic group to ensure oil solubility which limits the choice of substances
Solution Approach 1:
The patent uses surfactant as an intermediary substance that bridges the polar active ingredient and the non-polar lubricating oil. The surfactant has both hydrophilic (polar) and hydrophobic (non-polar) parts, allowing it to solubilize the polar extreme pressure additive in the oil medium without requiring the additive itself to be oil-soluble. This resolves the contradiction by enabling extreme pressure function while expanding substance selection beyond oil-soluble compounds.
Solution Approach 2:
The patent creates a composite additive system consisting of polar active ingredient + surfactant combination. This composite approach allows the system to exhibit both the extreme pressure properties of the polar substance and the oil compatibility provided by the surfactant, thereby expanding the range of usable substances while maintaining reliable extreme pressure performance.
2Adaptability or versatility
If less-oil-soluble substances are used to expand additive options, then substance selection range is improved, but oil solubility and dispersion stability deteriorate
Solution Approach 1:
The surfactant acts as a mediator that enables less-oil-soluble substances to disperse stably in lubricating oil. The surfactant molecules surround the polar active ingredient, with their hydrophobic parts facing the oil and hydrophilic parts facing the active ingredient, creating a stable dispersion without requiring the active ingredient itself to be oil-soluble.
Solution Approach 2:
The patent changes the solubility parameter of the additive system by introducing surfactant. Instead of requiring the active ingredient to have oil-soluble properties, the system achieves oil compatibility through the surfactant's amphiphilic nature, effectively changing the solubility characteristics of the overall additive package.
3Reliability
If polar group moiety is introduced for extreme pressure function, then lubrication performance is improved, but hydrophilicity increases requiring oleophilic groups which complicates molecule design
Solution Approach 1:
The patent segments the additive system into two independent functional components: the polar active ingredient that provides extreme pressure function and the surfactant that provides oil compatibility. This segmentation allows each component to be optimized independently for its specific function without requiring the active ingredient to incorporate both extreme pressure and oil-solubility features, thereby simplifying molecular design.
Solution Approach 2:
The surfactant serves multiple functions: it solubilizes the polar active ingredient in oil, stabilizes the dispersion, and may contribute to lubrication. This multi-functionality allows the active ingredient to focus solely on providing extreme pressure protection without needing to incorporate oleophilic groups, reducing molecular structure complexity.
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
This approach enables the use of previously unusable less-oil-soluble substances as effective additives, expanding the range of options for lubricating oils and improving performance by providing functions such as load carrying, base number enhancement, and anti-foaming, while maintaining stability until triggered.
Implementation Method 1
A solid-in-oil-type complex containing an active ingredient and a surfactant
Implementation Method 2
a step of subjecting the active ingredient to at least one of dissolution and dispersion in water to prepare an aqueous liquid (W)
Implementation Method 3
a step of removing the organic solvent from the water-in-oil-type emulsion, followed by drying
Data Source
AI summary
A complex including an active ingredient, and a surfactant. The active ingredient is one or more less-oil-soluble substances selected from the group consisting of a hardly-oil-soluble substance and an oil-insoluble substance, and the one or more less-oil-soluble substances function as an additive for lubricating oil. A method of making the complex.