Phosphorous Ester Stabilizer for Thermoplastic Resins
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Solution Overview
Problem
Conventional phosphorus antioxidants have insufficient stabilizing effects against heat and oxygen-induced deterioration during the processing of organic materials, leading to reduced strength and altered properties in thermoplastic resins and other organic materials.
Innovation Solution
A novel phosphorous ester compound, represented by a specific formula, is synthesized through the reaction of a hydroxy compound, a bisphenol compound, and phosphorus trihalide, which is then used as a stabilizer for organic materials, particularly thermoplastic resins, to enhance thermal stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional phosphorus antioxidants are used to stabilize organic materials, then some stabilizing effect is achieved, but the stabilizing effect against heat and oxygen-induced deterioration is insufficient
Solution Approach 1:
The patent modifies the molecular structure of phosphorus antioxidants by introducing specific substituents (R1-R6 groups including alkyl, cycloalkyl, aryl, and aralkyl groups) at defined positions on the phenolic rings. This structural parameter change enhances the antioxidant's ability to scavenge free radicals and chelate metal ions, thereby improving stabilizing effect against heat and oxygen-induced deterioration while maintaining the fundamental phosphorus antioxidant mechanism
Solution Approach 2:
The invention creates a composite molecular structure combining phenolic antioxidant moieties with phosphorus-based stabilizing groups. The molecule integrates multiple functional groups (hydroxyl groups for radical scavenging, phosphorus atoms for chelation and decomposition of peroxides) into a single compound, achieving synergistic stabilization against both thermal and oxidative degradation
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 phosphorous ester compound effectively improves the thermal stability of thermoplastic resins and other organic materials, reducing thermal and oxidative deterioration, thereby maintaining material properties and quality during processing and use.
Implementation Method 1
The phosphorous ester compound of the present invention is effective for improving the thermal stability in processing an organic material such as a thermoplastic resin
Implementation Method 2
conventional phosphorus antioxidants sometimes have insufficient stabilizing effect against deterioration due to heat or oxygen during processing of organic materials
Data Source
AI summary
The present invention relates to a phosphorous ester compound represented by the formula (I):wherein R1, R2, R3 and R4 each independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or an aryl group having 6 to 12 carbon atoms,a stabilizer for an organic material comprising the phosphorous ester compound, a method for stabilizing an organic material in which the phosphorous ester compound is added to an organic material, and a stabilized organic material composition comprising an organic material and a phosphorous ester compound.