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.

Antioxidant Families

Antioxidants interrupt the degradation process in different ways, according to their structure. The major classifications of antioxidants are listed below:
  • Primary Antioxidants, mainly acting as chain-breaking antioxidants, react rapidly with peroxy radicals (ROO*).
  • Secondary Antioxidants, reacting with hydroperoxides (ROOH) to yield non-radical, non-reactive products, are frequently called hydroperoxide decomposers.
  • Multi-functional Antioxidants, combining both primary and secondary antioxidant functions in one compound, have only recently become available
  • Hydroxylamines, capable of scavenging C-radicals, act as both primary and secondary antioxidants.
  • Carbon-Centered Radical Scavengers, effective in trapping alkyl radicals, provides powerful processing stability.

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