LOTSORB AN 136 CAS 164391-52-0

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CAS:164391-52-0

Purity:98%

Molecular formula:C24H30O2

MW:350.49

EINECS：NA

Antioxidant HP136,2(3H)-Benzofuranone,5,7-bis(1,1-dimethylethyl)-3-(3,4-dimethylphenyl) is a good benzofuranone carbon free radical and alkyl free radical scavenger, which can effectively inhibit the thermal oxidation reaction of polymers during processing and has a good anti-thermal oxidation effect.

ITEM	STANDARD
Appearance	White crystalline powder
Content%	≥98.00
Volatile	≤0.50
Melting point ℃	130.00-135.00

LOTSORB AN 136 is a high-performance benzofuranone antioxidant specially designed for polymer stabilization during high-temperature processing. It is widely used in polypropylene, engineering plastics, elastomers, and recycling applications due to its excellent free-radical scavenging ability and processing stability.

1. Polypropylene (PP) Processing

LOTSORB AN 136 is particularly effective in polypropylene processing, where it helps reduce molecular degradation, discoloration, and viscosity loss during extrusion, injection molding, and fiber production. It is commonly used together with Antioxidant 1010 and Antioxidant 168 for synergistic stabilization effects.

2. Engineering Plastics & Polymer Compounds

Suitable for engineering resins such as PE, ABS, polyolefins, and thermoplastic elastomers, LOTSORB AN 136 improves long-term thermal stability and processing durability in demanding industrial environments.

3. Recycled Plastics

LOTSORB AN 136 is widely used in recycled polymer systems to reduce degradation caused by repeated thermal processing. It helps maintain polymer mechanical properties and improves color stability during recycling operations.

4. Rubber & Elastomers

Used in synthetic rubber and elastomer formulations to improve oxidation resistance and extend service life under heat exposure.

5. Industrial Compounding & Masterbatch

The product is suitable for polymer masterbatch production and industrial compounding applications requiring excellent processing stabilization and low volatility.

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Excellent free-radical scavenging performance
Outstanding processing stabilization for polypropylene and polyolefins
Reduces polymer degradation and viscosity loss during high-temperature processing
Improves color stability and minimizes yellowing
Low volatility and excellent thermal stability
Highly effective in recycled polymer applications
Compatible with Phenolic Antioxidants and phosphite stabilizers for enhanced long-term protection
Suitable for PP fibers, engineering plastics, elastomers, and masterbatch production
Reliable global supply and technical support from Unisunchem

25kg/drum or Customized according to customer needs

Q1: What is LOTSORB AN 136 mainly used for?

LOTSORB AN 136 is mainly used as a high-performance processing antioxidant for polypropylene, polyolefins, engineering plastics, and recycled polymers to prevent thermal degradation during manufacturing.

Q2: Why is LOTSORB AN 136 suitable for polypropylene processing?

LOTSORB AN 136 has excellent carbon free-radical scavenging ability, helping improve processing stability, reduce degradation, and maintain polymer performance during high-temperature PP processing.

Q3: Can LOTSORB AN 136 be used with other antioxidants?

Yes. It is commonly formulated with Antioxidant 1010 and Antioxidant 168 to achieve better long-term thermal and oxidative stability.

Q4: Is LOTSORB AN 136 suitable for recycled plastics?

Yes. LOTSORB AN 136 is highly effective in recycled polymer systems because it minimizes degradation and helps maintain polymer mechanical properties during repeated processing cycles.