| Customization: | Available |
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| CAS No.: | Xxxx |
| Formula: | Xxxx |
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Rubber additive chemical auxiliary anti-aging antioxidants, like phosphites, act as hydroperoxide-decomposing and free-radical-trapping agents, extending the lifespan of rubber products by preventing or slowing down aging. They are particularly useful in polymer systems and don't negatively impact the color or luster of rubber products, unlike some other antioxidants.
| Type | Chemical Name / Representative Compound | Chemical Structure | Mechanism of Action | Thermal Stability | Solubility | Compatibility |
|---|---|---|---|---|---|---|
| Phenolic Antioxidants | BHT (Butylated Hydroxytoluene) | Phenol-substituted toluene derivative | Donates hydrogen atoms to terminate free radical chain reactions, inhibiting oxidation. | Medium-high (decomposition >200°C) | Lipophilic | Compatible with polyolefins, rubber |
| Phosphite Antioxidants | Tris(nonylphenyl) phosphite | Phosphite ester group (P-O-R) | Decomposes hydroperoxides (ROOH), preventing secondary oxidation; often synergistic with phenolics. | Medium (hydrolysis-sensitive) | Soluble in organic solvents | Suitable for high-temperature polymers |
| Hindered Amine Light Stabilizers (HALS) | Tinuvin 770 | Tetramethylpiperidine derivative | Traps radicals and decomposes hydroperoxides, regenerating over time for long-term UV protection. | High (stable up to 300°C) | Mostly lipophilic | Compatible with most polymers |
| Benzotriazole UV Absorbers | UV-326 | Benzotriazole ring structure | Absorbs UV light (290-400 nm) and converts it into harmless heat, reducing photodegradation. | High (stable >250°C) | Highly soluble in organic solvents | Compatible with polyesters, PVC |
| Natural Antioxidants | Vitamin E (α-Tocopherol) | Chromanol ring structure | Donates hydrogen to quench free radicals, protecting lipids and biomembranes from oxidation. | Low (oxidizes easily; light-sensitive) | Lipophilic | Compatible with oils, biobased materials |
| Thioester Antioxidants | DLTDP (Dilauryl Thiodipropionate) | Thioester group (S-COOR) | Decomposes hydroperoxides, suppressing oxidation; often synergistic with primary antioxidants. | Medium (decomposes ~180°C) | Lipophilic | Suitable for high-temperature polymers |
| Metal Deactivators | Oxanilide | Amide and chelating groups | Chelates metal ions (e.g., Cu²+, Fe³+), preventing metal-catalyzed oxidation. | Medium-high (stable ~200°C) | Partially soluble in polar solvents | Used in metal-contaminated polymers |
| UV Reflectors | Nano Titanium Dioxide (TiO2) | Inorganic oxide crystal structure | Reflects/scatters UV light (physical shielding), reducing UV penetration. | Extremely high (>600°C) | Insoluble; requires dispersion | Compatible with coatings, textiles |
Mechanism of Action
Antioxidants: Quench radicals via hydrogen/electron donation (e.g., phenolics, amines).
Light stabilizers: Suppress photo-oxidation (e.g., HALS traps radicals, UV absorbers dissipate energy).
Metal deactivators: Inhibit metal-ion-catalyzed oxidation.
Thermal Stability
Critical for high-temperature processing (e.g., plastic molding). HALS and benzotriazoles excel here.
Solubility
Lipophilic antioxidants (e.g., BHT) suit oils/nonpolar polymers; water-soluble variants (e.g., vitamin C derivatives) require modification.
Compatibility
Determines dispersion efficiency (e.g., nano-TiO2 needs surface treatment for even distribution in coatings).
Synergistic Effects: Some combinations (e.g., phenolics + phosphites) enhance anti-aging performance.
Eco-Friendly Trends: Natural antioxidants (tea polyphenols, rosemary extract) are replacing synthetics due to biodegradability.
Limitations:
Phenolics may migrate (e.g., requiring low-migration grades for food packaging).
HALS lose efficacy in acidic environments.
Function:
Prevent polymer degradation due to thermal oxidation or photo-oxidation during processing or use, extending material lifespan.
Common Types:
Antioxidants (e.g., BHT, phosphites): Terminate free radical chain reactions to prevent thermal oxidation.
Light stabilizers (e.g., benzotriazole UV absorbers, hindered amine light stabilizers/HALS): Absorb or scatter UV light to reduce photodegradation.
Effect: Maintains mechanical properties (e.g., toughness), prevents discoloration and cracking. Used in automotive parts, packaging materials, etc.
Function:
Delay skin aging, reduce wrinkles and pigmentation, and strengthen the skin barrier.
Common Types:
Antioxidants (Vitamin C, Vitamin E, CoQ10): Neutralize free radicals, reducing oxidative stress.
UV absorbers (Avobenzone, Octocrylene): Protect against UV damage in sunscreens.
Peptides (e.g., Palmitoyl Pentapeptide): Stimulate collagen production.
Effect: Enhances skin elasticity and delays photoaging. Used in serums, creams, and sunscreens.
Function:
Prevent lipid oxidation and rancidity, extending shelf life while preserving nutrition and flavor.
Common Types:
Synthetic antioxidants (BHA, BHT): Inhibit lipid oxidation chain reactions.
Natural antioxidants (Vitamin E, tea polyphenols): Safer alternatives for health foods.
Effect: Applied in edible oils, nuts, and meat products to prevent off-flavors and nutrient loss.
Function:
Drug stability: Prevent oxidation of active ingredients (e.g., antibiotics, vaccines).
Anti-aging therapy: Delay cellular aging and improve metabolic diseases.
Common Types:
Pharmaceutical stabilizers (e.g., sulfites, ascorbic acid).
Functional compounds (e.g., NMN, resveratrol) that activate longevity proteins (e.g., sirtuins).
Effect: Extends drug shelf life; supports anti-aging and immunity in supplements.
Function:
Prevent coating degradation (chalking, fading) due to UV exposure and oxidation.
Common Types:
UV absorbers (e.g., titanium dioxide, zinc oxide): Reflect or absorb UV rays.
Antioxidants (hindered phenols): Prevent resin oxidation.
Effect: Enhances weather resistance in architectural paints and automotive coatings, maintaining color stability.
Function:
Prevent fiber weakening and discoloration from light and oxidation, extending fabric life.
Common Types:
UV blockers (e.g., titanium dioxide nanoparticles): Reflect UV radiation.
Antioxidant finishes (e.g., plant polyphenols): Inhibit fiber oxidation.
Effect: Used in outdoor apparel and sunshades to preserve strength and color.
Function:
Agricultural films: Delay greenhouse plastic degradation.
Crop stress resistance: Improve plant tolerance to drought and heat.
Common Types:
Light stabilizers (e.g., HALS): Extend the lifespan of PE films.
Natural antioxidants (e.g., salicylic acid, melatonin): Reduce oxidative stress in crops.
Effect: Increases film durability and promotes crop growth under stress.
Function:
Protect solar panel backsheets and cable insulation from environmental damage.
Common Types:
Composite anti-aging agents (antioxidants + light stabilizers): Synergistic protection.
Effect: Ensures long-term stability of energy equipment, reducing maintenance costs.
Anti-aging agents play a crucial role across industries by:
Industrial materials: Extending product lifespan and reducing resource consumption.
Health & wellness: Delaying skin and cellular aging for better quality of life.
Food & agriculture: Minimizing waste and ensuring safety and sustainability.
With technological advancements, anti-aging agents are evolving toward higher efficiency, eco-friendliness, and multifunctionality, promising broad future applications.
Weifang Phoenix New Material Co., Ltd
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