Polymer Antioxidants

 TINTOLL polymer antioxidants are the most important additive in polyolefin, plastic, resin and other products. The purpose of antioxidants for polyolefins is to prevent or delay oxidation and to ensure the processing and use quality of products. Throughout the plastics production process, degradation and processing requirements can reduce the strength and stability of plastic parts.

 

TINTOLL plastic antioxidants help to extend the useful life of plastics by minimizing changes in physical properties throughout thermal processing, including extrusion, injection molding, blow molding and rotational molding. Antioxidants for polyolefins improve the weatherability of UV stabilized systems and enhance the durability of plastics at moderate to high temperatures.

 

TINTOLL antioxidant additives for plastics can help maintain gloss and transparency, prevent yellowing, surface cracking and odor, and maintain critical mechanical properties such as impact resistance, elongation and tensile strength.

 

TINTOLL's antioxidant additives for polymers work synergistically with other plastic additives such as UV stabilizers, absorbers and antistatic agents to make polymer products perform better for longer, promoting a circular economy and reducing plastic waste. Our broad product portfolio can help you extend product life by preventing premature product degradation, such as color fading or odor development, and increase the durability of products stored outdoors for long periods of time.

 

Classification of Antioxidants

Depending on their structure, antioxidants polymer additives interrupt the degradation process in different ways. The main categories of antioxidants are as follows:

 

Primary Antioxidants: They work by scavenging peroxide free radicals formed during oxidation. The two main classes of primary antioxidants are hindered phenols and aromatic amines.

 

Secondary Antioxidants: This antioxidant in polymer example reacts with hydroperoxides to produce non-free radical, non-reactive products, also known as hydroperoxide decomposers. Phosphites are most effective at the high temperatures of melt processing operations, while thioethers work best in the solid phase at long-term use temperatures.

 

Multifunctional Antioxidant Blends: They combine primary and secondary antioxidant functions in one compound.

 

Metal Deactivators: They prevent oxidative degradation caused by copper or other metals by chelation.

 

Manufacturing Process of Polymer Antioxidants

Raw Material Preparation

The process begins with the preparation of raw materials. These can include phenols, amines, phosphites, thioesters, and various other organic compounds. The specific materials used depend on the type of antioxidant plastic additives being produced.

 

Manufacturing Process of Polymer Antioxidants

Synthesis

The raw materials are then combined in a chemical reaction to create the antioxidant in polymer example. This usually involves heating the materials to a specific temperature and maintaining that temperature for a certain period. The exact conditions depend on the specific reaction being used.

 

Manufacturing Process of Polymer Antioxidants

Purification

The resulting product is then purified to remove any unreacted materials or byproducts. This can involve processes such as filtration, distillation, or crystallization.

 

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