Macromolecular Antioxidant Stabilizer for Polymer Durability
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Solution Overview
Problem
Current antioxidant stabilizer additives have low molecular weights, high volatility, and uneven distribution, leading to issues like short life, color damage, weakened strength, and embrittlement in materials under high temperature and strong light conditions.
Innovation Solution
A multifunctional synergistic macromolecular anti-oxidation stabilizer with a specific formula and preparation method that combines light-resistant and heat-resistant antioxidant functional fragments through thioether, amine, or ether bonds, forming a high molecular weight stabilizer with improved distribution and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If low molecular weight antioxidant stabilizers are used, then they are easy to manufacture and apply, but they exhibit high volatility and uneven distribution leading to short life and color damage
Solution Approach 1:
The patent employs composite materials by integrating multiple antioxidant functional fragments (such as hindered phenol, hindered amine, and thioether groups) into a single macromolecular structure. This composite approach within the molecular architecture enables synergistic antioxidant effects, improves thermal and light stability, and eliminates the volatility issues associated with low molecular weight antioxidants while maintaining ease of manufacture through direct incorporation during polymer synthesis.
2Ease of operation
If low molecular weight antioxidant stabilizers are used, then they are easy to apply, but they show high volatility and loss for degradation
Solution Approach 1:
The patent merges multiple antioxidant functional groups (hindered phenol, hindered amine, thioether) into a single macromolecular antioxidant structure. This combining approach creates a multifunctional stabilizer that provides prolonged service life through synergistic effects while maintaining ease of application, as the macromolecular structure can be directly incorporated into polymers during processing without separate addition steps.
3Ease of manufacture
If low molecular weight antioxidant stabilizers are used, then they can be easily incorporated into materials, but they result in uneven distribution of effects
Solution Approach 1:
The patent applies segmentation by dividing the antioxidant functionality into multiple distinct functional fragments (hindered phenol groups, hindered amine groups, thioether groups) that are distributed throughout the macromolecular structure. This segmented architecture ensures uniform distribution of antioxidant activity throughout the polymer material, eliminating the uneven distribution problems of low molecular weight antioxidants while maintaining ease of incorporation during polymer synthesis.
Data Source
AI summary
Disclosed is an anti-oxidation stabilizer, which has the following structure (A), wherein RI is a connection chain, and the connection chain is a fatty chain, an aromatic structural chain or a fatty and aromatic structurally combined chain; R2 is (B), and X is O, S, N or NH or —CONR—, Z is O, S, N or NH, and X is different from Z; R is a fatty chain, an aromatic group, a sterically hindered amine or sterically hindered phenol, R3 is a fatty chain, an aromatic group, a sterically hindered amine or sterically hindered phenol, and R is identical to R3, or R is different from R3; n is a positive integer including 1, n1 is a positive integer including 1, and n is identical to n1, or n is different from n1.