ODORLESS WATER-DISPERSIBLE SULFOPOLYESTER FOR ADHESIVE FORMULATIONS

摘要

Bonding with hot-melt adhesives poses some unique requirements to maintain bond integrity under a variety of end uses. The hot-melt adhesive industry has desired a water-dispersible raw material for a long time. Branched sulfopolyester represents a "best-of-both-worlds" approach where water-dispersibility is provided, along with other unique attributes, without sacrificing the key application/performance profiles that the adhesive industry requires. Some polyester raw materials have a distinct odor that is not desirable for selected applications. In response to this, Eastman Chemical Company developed odorless water-dispersible sulfopolyesters. The purpose of this article is to introduce these new odorless polyesters as raw materials for formulating water-dispersible hot-melt adhesives. The properties and a statistically designed experiment of adhesive performance characteristics of these water-dispersible polyesters will be discussed. Potentially available in a range of viscosities, these sulfopolyesters offer the following key features: 1. Odorless 2. Readily dispersible in water 3. Nondispersible in ionic environments 4. MITI approved 5. Good adhesive performance characteristics