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Adhesives Ingredients

Adhesion Promoter Selection Guide

This guide focuses mainly on adhesion promoter that is integrally blended into the formulation either by the adhesive supplier or by the end-user immediately before application. This selection guide will endeavor to direct the formulator through the process of selecting an adhesion promoter for a specific adhesive or sealant formulation and end-use requirement. Adhesion promoters must be considered with regard to compatibility with the base polymer in the formulation, the chemical nature of the substrate to be bonded, and the end-properties that the formulator is trying to achieve.

Adhesion Promoter

Adhesion PromotersThe addition of adhesion promoter to an adhesive or sealant is one of several methods of improving adhesion to a substrate. Adhesion promoter is a specialty compound that can react chemically with both the substrate and/or the adhesive. Adhesion promoter forms covalent bonds across the interface that are both strong and durable.


Silane coupling agents Titanate and zirconate coupling agents Other adhesion promoters



Adhesion promoter
can be applied either as an internal additive to a formulation or as a substrate surface treatment (i.e., as a primer prior to applying the adhesive / sealant). This guide focuses mainly on adhesion promoter that is integrally blended into the formulation either by the adhesive supplier or by the end-user immediately before application. When mixed with the adhesive, the coupling agent is capable of migrating to the interface and reacting with the substrate surface as the adhesive cures.

Adhesion Promoters
The adhesion promoter, therefore, acts as a chemical bridge between the adhesive and the substrate. It also provides an interphase region that is more resistant to chemical attack from the environment. Adhesion promoter usually consists of molecules with short organic chains with the capability to form primary bonds to either or both the adherend and the bulk adhesive.

This guide will endeavor to direct the formulator through the process of selecting an adhesion promoter for a specific adhesive or sealant formulation and end-use requirement. Adhesion promoter must be considered with regard to compatibility with the base polymer in the formulation, the chemical nature of the substrate to be bonded, and the end-properties that the formulator is trying to achieve.


Adhesion Promoters and Primers for Adhesives & Coatings Adhesion Promoters and Primers for Adhesives & Coatings  Choosing Adhesion Promoter

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