Phosphorus-containing compound and preparation method and use thereof
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Solution Overview
Problem
Lubricating oils have poor biodegradability, leading to environmental pollution and ecological imbalance, and existing biodegradation accelerators are not widely reported or effective.
Innovation Solution
A phosphorus-containing compound with a specific structure is developed, which promotes biodegradation of lubricating oils while providing oxidation resistance, prepared through a method involving reactions of compounds represented by formulas (II) and (III), followed by optional step (IV).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional lubricating oils are used, then lubrication performance is maintained, but biodegradability is poor leading to environmental pollution
Solution Approach 1:
The invention changes the chemical structure parameters of the lubricating oil by incorporating specific phosphorus-containing compounds with defined molecular structures (formula I) into the base oil. This structural modification enables the lubricating oil to maintain its lubrication performance while significantly improving biodegradability, as the specific phosphorus-containing structure facilitates microbial degradation without compromising functional properties
Solution Approach 2:
The invention creates a composite lubricating oil system by combining conventional base oil with specifically designed phosphorus-containing compounds. This composite approach allows the lubricating oil to exhibit both the desired lubrication characteristics of conventional oils and the improved biodegradability provided by the phosphorus-containing additive, effectively resolving the contradiction between performance and environmental compatibility
2Reliability
If biodegradable vegetable oils and synthetic esters are used to improve biodegradability, then environmental compatibility is improved, but oxidation resistance deteriorates
Solution Approach 1:
The phosphorus-containing compound acts as an intermediary substance that mediates between the biodegradable base oil and the oxidation environment. It forms protective films on metal surfaces and interacts with free radicals to prevent oxidation chain reactions, thereby protecting the biodegradable lubricating oil from oxidation while maintaining its environmental compatibility
Solution Approach 2:
The invention replicates the protective function of traditional anti-oxidant additives by designing phosphorus-containing compounds that mimic the oxidation-inhibiting behavior of conventional additives. These compounds copy the essential protective mechanism against oxidation while being integrated into biodegradable base oils, thus providing both biodegradability and oxidation resistance
3Productivity
If existing biodegradation accelerators are used, then biodegradation rate is improved, but oxidation resistance is compromised
Solution Approach 1:
The phosphorus-containing compound is designed with multi-functional capabilities: it accelerates biodegradation through its specific molecular structure that facilitates microbial attack, while simultaneously providing oxidation resistance through its chemical reactivity with oxidizing species. This single compound performs multiple protective functions that were previously achieved by separate additives, eliminating the need to choose between biodegradation acceleration and oxidation protection
Data Source
AI summary
A phosphorus-containing compound is represented by the formula (I):The phosphorus-containing compound has excellent biodegradability and oxidation resistance, and is suitable for promoting biodegradation of lubricating oil product.