Pressure sensitive adhesives (PSAs) are widely used in pressure sensitive labels, tapes, stamps, Post-it notes and many other products.  At present, PSAs are mainly derived from petrochemicals that are not renewable and not sustainable.  In this presentation, we will disclose our new discovery that polyesters from polymerization of epoxidized oleic acid, a bifunctional AB monomer containing a carboxylic acid group (A) and an epoxy group (B), can have superior PSA properties.  Oleic acid is a fatty acid that is abundant, renewable, and readily available.  A method for preparation of epoxidized oleic acid with high purity has been successfully developed.  Effects of various catalysts, the purity of epoxidized oleic acid, and polymerization conditions on the properties of the resulting PSAs have been extensively studied.  The resulting PSAs have been characterized for their molecular structures, thermal stabilities, and viscoelastic properties.  The peel strength, shear strength, tack, and aging stability of the resulting PSAs have also been evaluated and will be discussed in detail in this presentation.

Pressure sensitive adhesives based on oleic acid

247th National Meeting (2014)

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