PVC Compositions Containing Rare Earth Additive

A PVC composition comprising:

• PVC resin;
• ATO;
• and a rare earth hydroxide comprising Y(OH)3, La(OH)3, or a mixture thereof;
• wherein the PVC composition comprises 100 phr of PVC resin and comprises ATO and rare earth hydroxide collectively in an amount of about 3 phr to about 10 phr,
• wherein the PVC composition has a UL94 classification with a sample thickness of 0.8 mm of V-0, V-1, or V-2, and the PVC composition contains less ATO than in a PVC composition not containing the rare earth hydroxide to achieve the same UL94 classification.

A PVC composition comprising:

• 100 phr PVC resin;
• about 25 phr to about 50 phr MDH;
• and
• about 3 phr to about 10 phr rare earth hydroxide, wherein the rare earth hydroxide comprises Y(OH)3, La(OH)3, or a mixture thereof;
• wherein the PVC composition has a UL94 classification with a sample thickness of mm of V-0, V-1, or V-2.