MELT EXTRUDABLE POLYVINYL ALCOHOL COMPOSITIONS

摘要

Polyvinyl alcohol compositions of improved melt flow characteristics are obtained by the use of extrusion aids comprising a combination of a low molecular weight hydrocarbon oil or wax and a higher molecular weight ethylene homo- or copolymer. The improvement is even more pronounced in the presence of a plasticizer. The compositions are suitable for extrusion into a variety of forms including pellets, strands, filaments and films.