Encapsulant film based on functionalized polyolefins

A film comprising a functionalized polyolefin polymer, wherein the functionalized polyolefin polymer is a polymer selected from the group consisting of:

• a. a propylene copolymer comprising
• i. ≥95.0 mol % and ≤99.95 mol % of polymeric units derived from propylene, and
• ii. ≥0.05 mol % and ≤5.0 mol % of polymeric units derived from a functionalized olefin monomer,
• based on the total moles of all polymeric units constituting the propylene copolymer;
• b. a propylene terpolymer comprising
• i. ≥80.0 mol % and ≤98.95 mol % of polymeric units derived from propylene;
• ii. ≥0.1 mol % and ≤19.95 mol % of polymeric units derived from a first olefin monomer comprising either 2, or 4 to 8 carbon atoms;
• and
• iii. ≥0.05 mol % and ≤5.0 mol % of polymeric units derived from a functionalized olefin monomer,
• based on the total moles of all polymeric units constituting the propylene terpolymer;
• c. an ethylene terpolymer comprising:
• i. ≥80.0 mol % and ≤98.95 mol % of polymeric units derived from ethylene,
• ii. ≥0.1 mol % and ≤19.95 mol % of polymeric units derived from a second olefin monomer comprising 3 to 8 carbon atoms;
• and
• iii. ≥0.05 mol % and ≤5.0 mol % of polymeric units derived from a functionalized olefin monomer;
• based on the total moles of all polymeric units constituting the ethylene terpolymer;
• and
• d. a polymer mixture comprising any combination of polymers (a) to (c);
• wherein the functionalized olefin monomer is a monomer selected from:
• i. a hydroxyl group containing olefin monomer having 4 to 12 carbon atoms;
• ii. a carboxylic acid containing olefin monomer having 2 to 12 carbon atoms;
• and
• iii. an esterified olefin monomer represented by the formula:
• wherein R1 is selected from a hydrocarbyl group having 2 to 10 carbon atoms;
• wherein R2 is selected from a hydrocarbyl group having 2 to 10 carbon atoms, and
• wherein ‘n’ is an integer from 1 to 3 and ‘m’ is an integer from 0 to 4,
• wherein the functionalized polyolefin polymer comprises ≤0.8 wt % of inorganic metal oxide, based on the total weight of the functionalized polyolefin polymer and determined using Inductively Coupled Plasma Mass Spectrometry.