Adhesives Resins Business

Eastman Chemical Company completed the sale of the Adhesives Resins Business to Synthomer on April 1, 2022. The sale includes the following products:

  • Hydrocarbon resins (including Eastman Impera tire resins)
  • Pure monomer resins
  • Polyolefin polymers
  • Rosins and dispersions
  • Oleochemical and fatty-acid based resins

Read Eastman press release

Read Synthomer press release

In order for a material to function as an adhesive it must have a balance of elastic and viscous properties. It must possess sufficient viscous flow properties to bring the adhesive and the substrate into intimate enough contact for adhesive bonds to form. Once these bonds form, the material must have elastic strength to hold the system together. In an adhesive system, the base polymer or elastomer provides most of the elastic properties while the tackifier provides the viscous component. Once combined, the system exhibits the viscoelastic behavior that characterizes the adhesive. The study of the viscoelastic behavior of materials under variable conditions of stress and temperature is the science of rheology. As a tackifier modifies the rheological properties of an elastomer (e.g., a styrenic block copolymer, natural rubber, or ethylene vinyl acetate) the properties of tack; the ability to stick; and adhesion, the binding force of the adhesive, begin to develop.

While the viscoelastic properties of an adhesive are critical to its function, they are not alone in determining the ultimate level of tack and adhesion developed by a given system. These properties are strongly influenced by the chemistry of the adhesive, the surface properties of the substrate, and the interactions between them. Since there is a wide diversity of elastomers and tackifiers available to the formulator, a basic understanding of tackifier resin selection criteria and familiarity with the various families of tackifiers is critical.

Tackifier selection criteria
View selection criteria Tackifier selection criteria
Learn about Tackifier selection criteria, such as compatibility, color and fluorescence.
Block Copolymers
Learn about block copolymers Block Copolymers
Learn about styrenic block copolymers used in a wide range of hot melt adhesives.
© 2022 Eastman Chemical Company or its subsidiaries. All rights reserved.
As used herein, ® denotes registered trademark status in the U.S. only.