NOVEL APPROACHES TO THE TACKIFICATION OF PRESSURE SENSITIVE ADHESIVES

摘要

The addition of tackifiers to pressure sensitive adhesives is a well-known means of optimizing performance. Whenever tackifiers are relatively inexpensive and in good supply, the most cost-effective formulations for acrylic PSAs are to simply blend tackifiers and acrylics. However, if tackifier supply is a concern, a more cost-effective solution may be to prepare a two-layer construction. A layer against the face stock would be optimized for rheological properties where the top portion would be designed to have the surface chemistry required for adhesion to the targeted substrates.