High molecular polymers of hot melt adhesives can only be compatible with similar solubility. The influencing factors of solubility are as follows
1. The influence of macromolecular chain structure, the interaction between molecules is strong, and it is generally difficult to dissolve.
2. Influence of supramolecular structure, generally amorphous polymers are easier to dissolve than partially crystalline polymers. But polar crystalline polymers are also easy to dissolve.