Patent ID: 8236874

Claim:
A composition comprising: (a) a polymeric binder, (b) a cellulosic interfering component, (c) a coupling agent, said coupling agent being an amphiphilic block copolymer having a controlled polymer architecture and selected from the group consisting of polystyrene-b -methacrylic anhydride, polystryrene-b-4-vinylpyridine, polyisoprene-b-methacrylic anhydride, polyisoprene-b-4-vinylpyridine, polybutadiene-b-methacrylic anhydride, polybutadiene-b-4-vinylpyridine, polyethylene-b-methacrylic anhydride, polyethylene-b -4-vinylpyridine, polyethylene-propylene-b-methacrylic anhydride, polyethylene -propylene-b-4-vinylpyridine, polystearylmethacrylate-b-methacrylic anhydride, polybehenylmethacrylate-b-4-vinylpyridine, polybehenylmethacrylate-b-methacrylic anhydride, polybehenylmethacrylate-b-4-vinylpyridine, maleated-polyethylene, maleated-polypropylene, polyethylene-acrylic acid copolymers, polypropylene-acrylic acid copolymers and combinations thereof; and (d) a polymer processing aid, wherein upon melt-processing with a polymeric binder and a cellulosic interfering component, said coupling agent is capable of reducing interfacial tension between said polymeric binder and said interfering component.