Patent ID: 7737210

Claim:
A composition comprising, or produced from, polyvinyl chloride, filler, and an impact strength-retaining amount of a modifier wherein the modifier is an ethylene copolymer, an acid anhydride- or acid monoester-modified polyolefin, or combinations thereof; the filler includes glass fiber, hollow glass microsphere, CaCO 3 , silica, calcium silicate, calcium metasilicate, clay, mica, talc, alumina trihydrate, magnesium hydroxide, metal oxides, or combinations of two or more thereof; the ethylene copolymer is ethylene alkyl (meth)acrylate copolymer, ethylene butyl acrylate glycidyl methyl acrylate copolymer, ethylene (meth)acrylic acid copolymer or its corresponding ionomer, ethylene butyl acrylate (meth)acrylic acid copolymer or its corresponding ionomer, or combinations of two or more thereof; and the acid anhydride or acid monoester includes maleic anhydride, itaconic anhydride, fumaric anhydride, maleic acid monoesters, itaconic monoesters, fumaric acid monoester, a salt of thereof, combinations of two or more thereof.