Viscosity comparision chart

Periodic Table

As a resin chemist you may need this table.

Fatty acids properties

Polyols properties

Urethane oils

Vegetable Oils

Non-convertible media

NON-CONVERTIBLE MEDIA

Solutions of Polymeric material applied which dries by solvent evaporation.
Examples: Shellac, Bitumen, Cellulose lacquers, Chlorinated rubber, Thermoplastic acrylics.

Dispersions of polymeric material in non-solvent is applied and forms film.
Examples: PVA paints

Solid polymeric material applied as a melt.
Examples: Ethyl cellulose, Bitumen

These dry quickly, usually at room temperature and so capital is not required for ovens or for heating them. Inter-coat adhesion is usually good because the solvent will soften the film underneath. Application is simple in that no measurement of catalyst is required. These products are single packs and have a long shelf life.

Non-convertible media however require powerful, usually expensive, and perhaps toxic, solvents to dissolve them. They require a lot of solvent to get to application viscosity, hence they produce thin films when the solvent evaporates as well as creating possible atmospheric pollution. Because thin films are produced, it is necessary to apply several coats.