3M™ Glass Bubbles K20

3M™ Glass Bubbles K20 by 3M is a soda-lime-borosilicate glass filler. It is a chemically inert grade exhibiting chemical resistance, water resistance, abrasion resistance and lower film permeability. Provides high-build/low-slump, higher filler loading, reduced gloss, shrinkage & warpage, more uniform sheen, viscosity control at high PVCs with low solvent content. Is non-combustible and non-porous, so it does not absorb resin. Possesses low alkalinity, high strength, low-density of dry film, exterior solar reflectivity, low thermal conductivity, low dielectric constant, easier washability and scrub & burnish resistance. It maintains or improves opacity, viscosity, flow, leveling and sprayability. It has long shelf life and the potential to lengthen time before condensation develops. Spherical shape reflects light effectively in all directions. 3M™ Glass Bubbles K20 is used in many plastics and elastomers.