BLENDS OF FATTY-ACID COATED CARBONATE WITH UNTREATED CARBONATE FOR USE IN MELT PROCESSING OF CARBONATE-FILLED POLYMERS

摘要

A blended filler composition may include a treated alkali earth metal carbonate and an untreated alkali earth metal carbonate. A surface treatment of the treated alkali earth metal carbonate may include a monolayer concentration of the surface treatment. A polymer filler composition may include a surface-treated alkali earth metal carbonate, wherein a surface treatment of the alkali earth metal carbonate includes less than a monolayer concentration. A method of forming a filled polymer article may include mixing a polymeric resin with a filler composition and extruding the mixture to form a polymer article. The filler composition may include a blend of a treated alkali earth metal carbonate and an untreated alkali earth metal carbonate. The filler composition may include a treated alkali earth metal carbonate having a surface treatment having less than a monolayer concentration of the surface treatment.