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.

Silyl-terminated Polyethers

Silyl-terminated polyethers are designed for non-isocyanate and moisture curable polymer systems. Sealants based on Silyl-terminated polyethers have found regular use in both construction and industrial applications.

Standard one component formulation :

Component Parts (wt)
Silyl-terminated polyethers 100
Plasticizer 55
Calcium Carbonate 120
Titanium Dioxide 20
Thixotropic agent 2
Antioxidant 1
UV absorber / Hindered Amine 2
Dehydrating agent 2
Adhesion Promoter 3
Hardening catalyst 2

For improved stability and resistance to thermal and UV degradation, formulations based on these products generally contain both an antioxidant and UV absorber, as seen in the following standard one component formulation.

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