Biodegradable polymeric compositions and products thereof

A biodegradable, polymer composition, said composition being suitable for melt processing into various forms, including films, fibers, and nonwovens and comprising a compatible semicompatible polymer blend, said blend consisting essentially of:

• (a) a first biodegradable polymer, said polymer being a polyhydroxyalkanoate which is selected from the group consisting of homopoly (3-hydroxyalkanoates), homopoly (4-hydroxyalkanoate), copolymers of (3-b hydroxyalkanoates with (4-hydroxyalkanoates), and mixtures thereof;
• (b) at least one second, biodegradable polymer, said second polymer being selected from polylactides;
• (c) polycaprolactone;
• and
• (d) from 0 to about 25% of a plasticizer, by weight of the composition;
• wherein the composition comprises from about 10% to about 70% of said polyhydroxyalkanoate, from about 20% to about 80% of said polycaprolactone, and from about 10% to about 70% of said polylactide, based on the total weight of said polyhydroxyalkanoate, said polycaprolactone, and said polylactide.

A biodegradable, polymer composition, said composition being suitable for melt processing into various forms, including films, fibers, and nonwovens and comprising a compatible or semicompatible polymer blend, said blend consisting essentially of:

• (a) a first, biodegradable polymer, said polymer being a polyhydroxyalkanoate which is selected from the group consisting of homopoly (3-hydroxyalkanoates), homopoly (4-hydroxyalkanoates), copolymers of (3-hydroxyalkanoates) with (4-hydroxyalkanoates, and mixtures thereof;
• (b) at least one second, biodegradable polymer, said second polymer comprising a mixture of at least one aliphatic polyester-based polyurethane and at least one polylactide;
• (c) polycaprolactone;
• and
• (d) from 0 to about 25% of a plasticizer, by weight of the composition;
• wherein said composition comprises from about 10% to about 70% of said polyhydroxyalkanoate, from about 10% to about 70% of said polycaprolactone, from about 10% to about 70% of said polyurethane, and from about 10% to about 70% of said polylactide, based on the total weight of said polyhydroxyalkanoate, said polycaprolactone, said polyurethane, and said polylactide.