Considerations for the UV Stabilization of Adhesives and Sealants, 1991 Hot Melt Symposium Proceedings
Many end-use applications for adhesives and especially sealants require some exposure to ultraviolet light. The resistance of adhesives and sealant formulations to photoinduced degradation is often improved by selecting higher quality (i.e., more stable) polymers and tackifier resins, and by the addition of light stabilizers. This paper will discuss the use and mechanism of traditional UV absorbers and of the hindered amine light stabilizers (HALS). The relative importance of each of these classes of light stabilizers in preventing degradation of a thin film adhesive versus a "thick" sealant is discussed. The relative UV stability of various adhesive/sealant raw materials is discussed and data presented showing how this relative inherent polymer stability can be enhanced with the proper selection of light stabilizers.
Considerations for the UV Stabilization of Adhesives and Sealants, 1991 Hot Melt Symposium Proceedin