Floor finish solids are an extremely important part of any floor finish. In fact, the solids are really all that is used after floor finish is applied.
The solids are the plastic or polymer molecules that are left on the floor when you apply finish and can have a big impact on the performance of the finish. The size and make up of these polymer molecules can very from brand to brand and can require different types of maintenance. Chemical liquids such as water, emulsifiers, wetting and leveling agents make up the remainder of the floor finish content. But in the end though, the solids are what make up to protective coating that you rely on.
These properties are constantly being tweaked by the floor finish manufactures so more solids can be used, while delaying the drying process until after the product has been applied. With new technologies in polymer science, the higher solids floor finishes are becoming more effective and easier to use.