Armstrong World Industries, Inc.

Dean A Markley

Richard E Felter

Deborah L Musser

Particulate vinyl resin mixed with a liquid premix of carbon black, plasticizer, etc. provides surface resistivities of 10.sup.4 -10.sup.9 ohm/sq. with as little as 0.2 to 5% by weight carbon black in fused sheets or films useful for conductive flooring or wrapping. Overcoating with a plastisol before fusion provides a smooth surface without loss of static dissipative properties. Conductive TiO.sub.2, Sb/SnO.sub.2, organic titanates, dispersions of carbon black and titanium dioxide, di-2-ethylhexyl phthalate, epoxidized soybean oil, polyethylene glycol and organic stabilizer are useful for preparing PVC resin compositions.

Static dissipative vinyl surface covering materials, methods for them,

Static dissipative vinyl sheet and film

The present invention relates to novel compositions comprising epoxy resins and phosphate ceramic compositions derived from wollastonite, a metal oxide, and phosphoric acid. In addition to providing a curing component for the inorganic constituents of the composition, the phosphoric acid also serves as an acid catalyst for the epoxy resin. As a result, a system is obtained which can be highly filled with inert material, yet which provides superior resistance to traffic and other wear conditions. In one preferred embodiment, the above composition comprises latent curing additives which provide an accelerated cure to the system.

Growing community of inventors

Mountville, PA, United States of America

Dean A Markley