What’s happening to a paint when it “cures” after drying?

Question

What’s happening to a paint when it “cures” after drying?

In: Chemistry

Answer 1

Paints contain molecules that are like chains. When paint dries those chains get tangled together and in some cases the chains connect to each other forming an even longer chains. As it dries the chains get more and more tangled and make more connections to each other which forms a big network of chains which won’t come apart easily.