Patent ID: 11118087

Abstract:
Provided is a film-forming resin composition for protecting an article that an organic polymer is exposed, including a polyurethane resin (A) having a hydroxyl group, a (meth)acrylic resin (B) having a hydroxyl group, and a polyfunctional isocyanate (C), in which the composition has a cross-linking density n of 1.0×10−4 to 5.0×10−3 mol/cm3, which is determined according to Mathematical Formula (1) n=E′min/(3RT). Here, E′min represents a minimum value E′min of storage elastic modulus of a cured film obtained by curing the resin composition at 80° C. for 16 hours in a case where the cured film is subjected to viscoelasticity measurement at a frequency of 1.0 Hz and a temperature range of −40° C. to 160° C., T represents an absolute temperature at the minimum value E′min, and R represents a gas constant.