Additive-containing biopolymer compositions

A composition, comprising:

• a component (A) that is 65% to 99.4% by weight of biopolymers selected from the group consisting of
• polylactic acid (PLA),
• polybutylene succinate (PBS),
• polybutylene succinate adipate (PBSA),
• thermoplastic starch (TPS),
• polyhydroxyalkanoate (PHA),
• polybutylene adipate terephthalate (PBAT),
• polybutylene sebacate terephthalate (PBST),
• polyhydroxybutyrate (PHB),
• polycaprolactone (PCL),
• and cellophane (CA), and
• mixtures thereof;
• a component (B) that is 0.5% to 30% by weight of homopolymers, copolymers or terpolymers based on vinyl acetate;
• and
• a component (C) that is 0.1% to 5% by weight of organopolysiloxane pellets comprising
• (1) 100 parts by weight of at least one polyorganosiloxane composed of units of general formula
• RrSiO(4-r/2) (I)
• where R is identical or different and is a substituted or unsubstituted hydrocarbon radical and r is 0, 1, 2 or 3, with the proviso that the average numerical value of r is within a range from 1.9 to 2.1,
• (2) 1 to 200 parts by weight of a reinforcing or non-reinforcing filler or mixtures thereof,
• (3) 0.01 to 20 parts by weight of a boric acid-containing additive for the production of the pellet material, and
• (4) optionally further auxiliaries selected from the group of processing aids, plasticizers, pigments, and stabilizers;
• wherein the organopolysiloxane pellets having a particle size of 1 to 100 mm;
• and
• wherein the contents of components (A), (B), and (C) in % by weight are in each case based on the total weight of the compositions.

The composition of claim 10, wherein the vinyl acetate-based homopolymers, copolymers or terpolymers employed are ones selected from the group comprising

• vinyl acetate homopolymers,
• copolymers of vinyl acetate and ethylene,
• copolymers of vinyl acetate and vinyl laurate,
• terpolymers of vinyl acetate, ethylene, and versatic esters,
• terpolymers of vinyl acetate, ethylene, and acrylate,
• terpolymers of vinyl acetate, vinyl laurate, and acrylate, and
• mixtures thereof.

A process for producing compositions, comprising:

• providing components (A), (B) and (C);
• wherein the component (A) is 65% to 99.4% by weight of biopolymers selected from the group consisting of
• polylactic acid (PLA),
• polybutylene succinate (PBS),
• polybutylene succinate adipate (PBSA),
• thermoplastic starch (TPS),
• polyhydroxyalkanoate (PHA),
• polybutylene adipate terephthalate (PBAT),
• polybutylene sebacate terephthalate (PBST),
• polyhydroxybutyrate (PHB),
• polycaprolactone (PCL),
• cellophane (CA), and
• mixtures thereof,
• wherein the component (B) is 0.5 to 30% by weight of homopolymers, copolymers or terpolymers based on vinyl acetate, and
• wherein the component (C) is 0.1% to 5% by weight of organopolysiloxane pellets comprising
• (1) 100 parts by weight of at least one polyorganosiloxane composed of units of general formula
• RrSiO(4-r/2) (I)
• where R is identical or different and is a substituted or unsubstituted hydrocarbon radical and r is 0, 1, 2 or 3, with the proviso that the average numerical value of r is within a range from 1.9 to 2.1,
• (2) 1 to 200 parts by weight of a reinforcing or non-reinforcing filler or mixtures thereof,
• (3) 0.01 to 20 parts by weight of a boric acid-containing additive for the production of the pellet material, and
• (4) optionally further auxiliaries selected from the group of processing aids, plasticizers, pigments, and stabilizers,
• wherein the organopolysiloxane pellets having a particle size of 1 to 100 mm, and
• wherein the contents of components (A), (B), and (C) in % by weight are in
• each case based on the total weight of the compositions;
• and
• mixing the components (A), (B) and (C) together.