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Antioxidants for Adhesives

Adhesives and their raw materials react like other organic materials with oxygen in a process called autoxidation. This guide offers you an extended overview of Antioxidants in the adhesives & sealant industry. You will be able to select the antioxidant you need from the different antioxidant families mentioned here. This guide will also take a look into antioxidant benefits and applications. You can also check how to test and determine the efficiency of the antioxidant(s) you have selected.

Solvent-based Adhesives

Solvent-based adhesives principally consist of polymers such as natural rubber, polychloroprene, etc., dissolved in aliphatic or aromatic solvents.

Natural and chloroprene rubbers are unsaturated elastomers and are therefore susceptible to attack by oxygen and light. Although they are not exposed to very high temperatures during processing, as is the case in the preparation of hot melt adhesives, they do need to be stabilized against degradation in end use, especially when used in thin films. 

Therefore, stabilizers should be added in the formulation to protect the adhesive during both processing (drying) and service life. There are products in market which are effective antioxidants for such applications:

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