Polyurethane elastomers, bio-additive foam compositions

An article of manufacture comprising a polyurethane elastomer composition, said polyurethane elastomer composition is formed by mixing and then reacting a composition comprising (a) an organic diisocyanate, (b) a polyester resin, (c) a chain extender, (d) a crosslinker, (e) a plasticizer, (f) a surfactant, (g) an optional foaming agent, (h) an optional colorant, a bio-additive and an optional catalyst;

• and wherein said elastomer has a hardness value of from about 20 Asker C to about 60 Asker C, a tensile strength of from about 1 MPa to about 10 MPa, a resilience of from about 25 percent to about 60 percent, an elongation at break of from about 150 percent to 700 percent, and a tear strength of from about 2 Newtons/millimeters to about 4 Newtons/millimeters, and wherein said polyester is a semi-crystalline polyester selected from the group consisting of poly(1,3-propylene-succinate), and copoly(1,3-propylene-succinate)-copoly(1,2-propylene-succinate).

A process for the preparation of polyurethane elastomers comprising mixing of and then reacting (a) an organic diisocyanate, (b) a polyester resin, (c) a chain extender, (d) a crosslinker, (e) a plasticizer, (f) a surfactant, (g) a foaming agent, and (h) an optional colorant and a bio-additive;

• and wherein said elastomer has a hardness value of from about 15 Asker C to about 60 Asker C, a tensile strength of from about 1 MPa to about 10 MPa, a resilience of from about 30 percent to about 60 percent, an elongation at break of from about 150 percent to 700 percent, and a tear strength of from 2 Newtons/millimeters to about 4 Newtons/millimeters, and wherein said polyester is a semi-crystalline polyester selected from the group consisting of poly(1,3-propylene-succinate), and copoly(1,3-propylene-succinate)-copoly(1,2-propylene-succinate).