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Antioxidants

Antioxidants are a key component of modern coatings, adhesives, sealants, and elastomer formulations (CASE). They make a decisive contribution to polymer stabilization and thus to the service life and performance of the respective products. Since CASE materials are often exposed to oxidative stress during use, the risk of radical-induced oxidation increases. This leads to molecular degradation of the polymers, which can manifest itself in embrittlement, color changes, loss of adhesive strength, or reduced sealing effectiveness.

This process can be significantly slowed down through the targeted use of suitable antioxidants for coatings, adhesives, sealants, and elastomers. Antioxidants neutralize reactive radicals or convert them into stable compounds. In this way, they prevent chain-like degradation processes and increase the material resistance, weather stability, and thermal and mechanical resilience of the formulations.

Choosing the right antioxidant during the development phase lays the foundation for durable, reliable, and high-quality CASE products, which represents an important competitive advantage in all applications where material protection and product performance are crucial.

Discover our product portfolio

Antioxidants, which we offer as part of the LUBIO® AO series for the CASE industry, cover a wide range of primary and secondary solutions. In addition to low- and high-molecular-weight phenolic antioxidants, we also produce amine antioxidants and synergistic antioxidant systems. Our portfolio also includes products based on phosphorus and sulfur.

Our product highlights for the CASE industry:

LUBIO® Chemical Basis Form Key Benefits C A S E Application Highlights
AO 5 Phenolic S • Low melting point
• Suitable for use in various applications involving indirect food contact
Solvent-based Adhesives and Sealants
AO 7 Phenolic S • High temperature resistance
• High-molecular weight and low vapor pressure
Powdercoatings, Hotmelts, Numerous rubber applications
AO 11 Phenolic L • Excellent process and long-term stabilization
• Low volatility
Solvent-based Adhesives and Sealants
AO 16 Phenolic + Thioester L • No labeling required
• Non-staining
Hotmelts, Styrene-based thermoplastic Elastomers
AO 18 Phenolic + Thiopropionate S • Multifunctional antioxidant
• Very high thermal stability
Hotmelts, Water- and solvent-based adhesives, EVA-based rubber
AO 21 Phenolic + Thioester S • High light and temperature resistance
• Particularly suitable for elastomers
Natural and synthetic rubbers
AO 27 Phosphite S • Low volatility
• Excellent hydrolysis resistance
Solvent-based and Powdercoatings, Styrene-based thermoplastic Elastomers
AO 37 Phosphite S • High stability at high temperatures
• Excellent color and yellowing stability
Powdercoatings, Polyolefin- and solvent-based Hotmelts
AO 41 Phenolic + Phosphite L • Synergistic blend of primary and secondary antioxidants
• Liquid phosphite
Solventbased Adhesives and Sealants
AO 43 Phenolic + Sulfur L • Synergistic blend of primary and secondary antioxidants
Hotmelts, Styrene-based thermoplastic Elastomers
AO 44 Aminic L • Significantly better labeling compared to known alkylated DPAs
• No labeling as Repr. tox. 1 and 2
Hotmelts and solvent-based Adhesives and Sealants
AO 45 Aminic S • High nitrogen content
• Free of labeling
NR and NBR-based Elastomers, Solvent- and PU-based Coatings and Adhesives

■ Recommended | □ Suitable

Our LUBIO® additives cover a wide range of applications. However, standard solutions are not always the best choice. If you have specific requirements or need a custom formulation, we will work with you to develop tailored additive solutions that are perfectly aligned with your processes and products.

Our experienced team is happy to provide personal consultation and support you from development to implementation. Contact ustogether, we will find the optimal solution for your challenge.

Discover more CASE additives

LUBIO® Hydrostab

Hydrolysis Stabilization

LUBIO® UV

UV Stabilizers

LUBIO® Sulfosafe

Crosslinkers

For you, we will find the right Solution.

We are happy to support you.

A complete range of services includes comprehensive consulting.

Schäfer-Additivsysteme GmbH
Ludwig-Reichling-Str. 2
67059 Ludwigshafen am Rhein, Germany
Tel.:  +49 (0) 621 595 727-0
Fax: +49 (0) 621 595 727-29
E-mail: solutions@lubio.com