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    Plastics play a vital role in maintaining the quality of a wide range of products during shipping, handling, storage, and shelf time.

The global demand for innovative packaging plastic technology continues to rise with the increased consumption. COVID-19 drastically reshaped the packaging industry with new trends from increased consumer demands centered around expedited convenience in their packaged goods.

As market demand for convenient, safe, and hygienic features rises, polymer performance additives are crucial a piece of technology that allows packaging manufacturers to remain agile and aligned with changing consumer preferences. SI Group's polymer additives protect various plastic systems and resins from overall polymer degradation and allow them to maintain surface integrity over their lifetime. 

ChemPoint - Product Articles

What Are Plastic Additives?


Plastic additives are any organic or inorganic material added to an organic-based polymer that can stabilize or modify the properties of the polymer material. SI Group specializes in plastic performance additives that stabilize through radical management and protect against degradation during the reaction process caused by energy, UV Light, heat, and radiation. 

Additionally, SI Group packaging additives are compatible with various polymer systems like: Thermoplastic Polyurethane (TPU), Polyethylene (PE), Engineered Resin, Acrylonitrile Butadiene Styrene (ABS), Polyvinyl Chloride (PVC), Polypropylene (PP) and many more. 

Explore our range of plastic additives that comprise antioxidants, coupling agents, light stabilizers, and compatibilizers from the SI Group:

Antioxidants and Heat Stabilizers

Antioxidants inhibit and slow down the oxidative degradation of the polymer material by preventing the propagation steps of oxidation. Antioxidants are classified as either primary or secondary antioxidants, depending on avoiding oxidation. Primary and secondary antioxidants provide thermal stability to protect against oxidative polymer degradation, consisting of two separate steps. The first step is oxidation which is the reaction of the polymer with oxygen, and the second is degradation which causes chain scission or cross-linking. Stability can be achieved through radical management with the application of antioxidant solutions for polyethylene (PE) and polypropylene (PP) packaging applications:

ANOX™ 20:

Anox 20ANOX™ 20 is a hindered phenolic antioxidant that is excellent for polypropylene packaging plastics. It offers low volatility, good color control, cost efficiency, and broad global food contact approvals. ANOX™ 20 primary chemistry consists of hindered phenolic, which improves the polymer’s stability and resistance to discoloration during its processing. 
Click here to learn more about ANOX™ 20


Ethanox 330ETHANOX™ 330 is an extraction-resistant phenolic antioxidant that provides excellent protection and low volatility. ETHANOX™ 330 is one of the only high molecular weight phenolic antioxidants with broad FDA approval for indirect food contact application. 
Click here to learn more about ETHANOX™ 330

LOWINOX™ 1790:

Lowinox 1790LOWINOX™ 1790 is a high-performance hindered phenolic antioxidant that offers hydrolytic stability and low migration in polyolefin packaging plastics.
Click here to learn more about LOWINOX™ 1790


Anox IC14ANOX™ IC-14 is a low volatility phenolic antioxidant with excellent extraction resistance, good color properties, and global food contact approvals for use in packaging polyolefins. ANOX™ IC-14 provides outstanding protection against thermal degradation and stability for the product’s lifetime. 
Click here to learn more about ANOX™ IC14


Ultranox 626ULTRANOX™ 626 is a high-performance organophosphate antioxidant that offers a low loading rate and color stability in a wide range of packaging plastic applications. ULTRANOX™ 626 also provides syngenetic capabilities with benzophenone and benzotriazole light stabilizers. 
Click here to learn more about ULTRANOX™ 626

Coupling Agents and Compatibilizers

Compatibilizer and coupling agent additives create interfacial properties and stabilize the polymer blend to improve the compatibility between blended polymer systems. SI Group POLYBOND™ comes in a range of coupling agents, compatibilizers, and adhesion promoters. POLYBOND™ is excellent for use as a tie layer in polyolefin and BOPP packaging applications. POLYBOND™ is a range of coupling agents from SI Group. It is excellent for use as a tie layer in polyolefin and BOPP packaging applications.


POLYBOND™ 7200 is designed to meet the needs of high-speed processing and complex adhesion applications compared to traditional coupling agents. It provides high gloss, increased tear strength, and excellent adhesion for printed BOPP to a tie-layer.
Click here to learn more about POLYBOND™ 7200 


POLYBOND™ 3200 is designed to meet the needs of high-speed processing and complex adhesion applications compared to traditional coupling agents. It provides high gloss, increased tear strength, and excellent adhesion for printed BOPP to a tie-layer.
Click here to learn more about POLYBOND™ 3200 


POLYBOND™ 1002 is a polypropylene-based coupling agent that provides excellent adhesion to aluminum, stainless steel, tin-plated steel, and various other materials. POLYBOND™ 1002 is designed to address dispersion, mixing difficulties, and inadequate adhesion problems. 
Click here to learn more about POLYBOND™ 1002 

Explore our range of coupling agents and compatibilizers for packaging from the SI Group

UV and Light Stabilizers

Light stabilizers, also called ultraviolet (UV) light absorbers, are used to prevent the degradation of plastic materials by ultraviolet light, which damages and degrades the plastics’ visual and physical properties. UV and light stabilizers are used in a wide range of polyolefins and other packaging materials to improve the polymer against photo-degradation with exposure to sunlight and artificial lights. SI Group’s light stabilizing technology product line includes benzophenones, benzotriazoles, and hindered amine light stabilizers (HALS). 


LOWILITE™ 77 is a hindered amine light stabilizer that is suitable for use in various polymers, including polyamides, polyolefins, polyacetals, styrenes such as ABS, PS, SAN, ASA, and HIPS. 
Click here to learn more about LOWILITE™ 77


LOWILITE™ 19 is a hindered amine UV and light stabilizer that provides excellent protection for organic polymers from ultraviolet-caused degradation. LOWILITE™ 19 is compatible with polypropylene, polyethylene, and blended applications. 
Click here to learn more about LOWILITE™ 19 

Click here to explore our range of UV and light stabilizers from the SI Group

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