Hybrid copolymer composition for protecting foldable displays

A polymer composition:

• comprising:
• a first proportion of polyol segments;
• a second proportion of polyisocyanates;
• a third proportion of a curative;
• a fourth proportion of a soft polymer chain;
• and
• a fifth proportion of a crosslinker;
• exhibiting a tan delta curve characterized by:
• a low-temperature tan delta between 0.05 and 0.25 at −20 degrees Celsius;
• a high-temperature tan delta between 0.05 and 0.30 at 85 degrees Celsius;
• and
• a maximum tan delta less than 0.4 at temperatures between −20 degrees Celsius and 85 degrees Celsius.

A polymer composition:

• comprising a first amount of urethane linkages;
• exhibiting:
• a tan delta curve characterized by:
• a low-temperature tan delta between 0.05 and 0.25 at −20 degrees Celsius;
• a high-temperature tan delta between 0.05 and 0.30 at 85 degrees Celsius;
• and
• a maximum tan delta less than 0.4 at temperatures between −20 degrees Celsius and 85 degrees Celsius;
• a surface roughness characterized by an arithmetic mean deviation between 5 nanometers and 40 nanometers;
• a haze value less than 1.3 percent;
• and
• a yellowness index less than 1.1;
• and
• wherein a film comprising the polymer composition exhibits a bend height less than 0.5 millimeters after subjecting the film to a bend test.