Patent ID: 11905359
Assignee: EVOCO LIMITED
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 16:
17. A polyurethane elastomer derived from at least (a) an organic diisocyanate, (b) a polyester, (c) a chain extender, (d) a crosslinker, (e) a plasticizer, (f) a surfactant, (g) a foaming agent, and (h) a bio-additive comprising eggshell, wherein said polyester comprises one or more of: poly(1,2-ethylene-succinate), poly(1,3-propylene-succinate), and copoly(1,3-propylene-succinate)-copoly(1,2-propylene-succinate); wherein said elastomer has a hydrolytic stability of from about 80 percent to about 150 percent, a resilience of from about 35 percent to about 45 percent, and a compression set of from about 3 percent to about 6 percent.