Films comprising aliphatic thermoplastic polyurethanes and polyvinyl acetals useful as paint protection films

A thermoplastic film, comprising:

• a. a thermoplastic polymer layer comprising:
• i. a thermoplastic polyurethane polymer comprising the reaction product of:
• 1. an aliphatic diisocyanate,
• 2. an aliphatic polyether polyol,
• 3. a chain extending agent;
• and
• ii. a polyvinyl acetal polymer characterized by:
• 1. a % PVOH value from about 10 to about 26, and
• 2. a molecular weight from about 30,000 to about 300,000,
• wherein the thermoplastic polyurethane polymer is present in the thermoplastic polymer layer in an amount from about 30 to about 99 percent by weight;
• and
• b. an adhesive layer,
• wherein the thermoplastic film:
• when tested by ASTM D-412, exhibits a stress at 5% strain of no greater than 200 psi.