Abstract: A degradable polymer composition comprising: (a) a polyolefin; (b) two or more transition metal compounds in a total amount of from 0.15 to 0.6 wt %, (c) a mono- or poly-unsaturated C14-C24 carboxylic acid, or an ester, anhydride or amide thereof, in an amount of from 0.04 to 0.08 wt %; (d) a synthetic rubber in an amount of from 0.04 to 0.2 wt %; and, optionally: (e) dry starch in an amount of from 0 to 20 wt %; and/or (f) calcium oxide in an amount of from 0 to 1 wt %; and/or (g) a phenolic antioxidant stabilizer in an amount of from 0 to 0.2 wt %; wherein the two or more transition metal compounds are selected from iron, manganese, copper, cobalt and cerium compounds and wherein the transition metals in the two or more transition metal compounds are different.

Abstract: A sheet material formed of a degradeable composition comprising 30 to 80 wt % calcium carbonate, an additive, and the balance a polymer selected from polyethylene, polypropylene and copolymers and blends thereof. The additive comprises (a) two or more transition metal compounds, (b) a mono- or poly-unsaturated C14-C24 carboxylic acid, or an ester, anhydride or amide thereof, (c) a synthetic rubber. The addition optionally comprises (d) dry starch, and/or (e) calcium oxide, and/or (f) a phenolic antioxidant stabilizer. The two or more transition metal compounds are selected from iron, manganese, copper, zinc, titanium, cobalt and cerium compounds and the transition metals in the two or more transition metal compounds are different.

Abstract: A sheet material formed of a degradeable composition comprising 30 to 80 wt % calcium carbonate, an additive, and the balance a polymer selected from polyethylene, polypropylene and copolymers and blends thereof. The additive comprises (a) two or more transition metal compounds, (b) a mono- or poly-unsaturated C14-C24 carboxylic acid, or an ester, anhydride or amide thereof, (c) a synthetic rubber. The addition optionally comprises (d) dry starch, and/or (e) calcium oxide, and/or (f) a phenolic antioxidant stabilizer. The two or more transition metal compounds are selected from iron, manganese, copper, zinc, titanium, cobalt and cerium compounds and the transition metals in the two or more transition metal compounds are different.

Abstract: A degradable polymer composition comprising: (a) a polyolefin; (b) two or more transition metal compounds in a total amount of from 0.15 to 0.6 wt %, (c) a mono- or poly-unsaturated C14-C24 carboxylic acid, or an ester, anhydride or amide thereof, in an amount of from 0.04 to 0.08 wt %; (d) a synthetic rubber in an amount of from 0.04 to 0.2 wt %; and, optionally: (e) dry starch in an amount of from 0 to 20 wt %; and/or (f) calcium oxide in an amount of from 0 to 1 wt %; and/or (g) a phenolic antioxidant stabilizer in an amount of from 0 to 0.2 wt %; wherein the two or more transition metal compounds are selected from iron, manganese, copper, cobalt and cerium compounds and wherein the transition metals in the two or more transition metal compounds are different.