Metal-Free Antioxidant Composition for Lubricating Oil Stability
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Solution Overview
Problem
Current antioxidant compositions for lubricating oils do not achieve high anti-oxidation performance, especially at varying temperatures, and the disposal of metal-containing lubricating oils poses environmental concerns, while existing combinations of non-metal antioxidants have not met the demand for extended shelf life and high performance.
Innovation Solution
A synergistic antioxidant composition combining a specific phenol-based compound with a general amine-based or phenol-based antioxidant, with a weight ratio of 30/70 to 99/1, which does not contain metal elements, enhancing the anti-oxidation performance of lubricating oils without compromising stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal-containing antioxidants are used to improve anti-oxidation performance, then the anti-oxidation performance is improved, but environmental harm increases due to heavy metal disposal costs
Solution Approach 1:
The invention extracts and removes metal elements from the antioxidant system, replacing them with non-metallic organic compounds. The patent specifically uses phenol-based and amine-based antioxidants without any metal content, thereby eliminating the environmental harm associated with metal disposal while maintaining anti-oxidation functionality.
Solution Approach 2:
The invention changes the chemical composition parameters of the antioxidant from metal-containing to metal-free organic compounds. By adjusting the molecular structure and chemical properties of the organic antioxidants, the patent achieves high anti-oxidation performance without the harmful environmental effects of metal additives.
2Object-affected harmful factors
If existing non-metal antioxidant combinations are used to avoid environmental harm, then environmental harm is reduced, but anti-oxidation performance is insufficient
Solution Approach 1:
The invention merges phenol-based antioxidants and amine-based antioxidants into a synergistic combination. The patent specifies that both types of antioxidants are present in the composition, leveraging their complementary mechanisms to achieve superior anti-oxidation performance that neither could achieve alone, while maintaining metal-free environmental benefits.
Solution Approach 2:
The invention creates a composite antioxidant system using multiple organic compounds with different chemical structures and mechanisms. The combination of phenol-based and amine-based antioxidants forms a composite material that provides enhanced and synergistic anti-oxidation protection, meeting high performance requirements without metal content.
3Device complexity
If single-type antioxidants are used to simplify the composition, then device complexity is reduced, but anti-oxidation performance across varying temperatures is insufficient
Solution Approach 1:
The invention designs the antioxidant composition to perform multiple functions across different temperature conditions. The phenol-based and amine-based antioxidants work synergistically to provide effective protection across a wide temperature range, making the composition universally effective for various operating conditions without requiring separate antioxidant systems for different temperatures.
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 antioxidant composition extends the shelf life of lubricating oils by providing excellent anti-oxidation performance and stability, free from metal elements, thus addressing the environmental concerns associated with metal-containing additives.
Implementation Method 1
an antioxidant composition, free of any metal element, which has high anti-oxidation performance... including: a compound (A) represented by the following general formula (1); and an amine-based antioxidant (B) and a phenol-based antioxidant (C)
Data Source
AI summary
Provided is an antioxidant composition, including: a compound (A) represented by the following general formula (1); and an amine-based antioxidant (B) and/or a phenol-based antioxidant (C) other than the compound (A): (wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents a number from 1 to 3.)