Organic-inorganic hybrid resin, coating material, and composite structure

A coating material, comprising:

• 1 part by weight of an organic-inorganic hybrid resin and 0.2 to 1.5 parts by weight of solvent,
• wherein the organic-inorganic hybrid resin is formed by reacting a polyol organic resin with a polysilsesquioxane polymer,
• wherein the organic-inorganic hybrid resin has T0, T1, T2, and T3 signals of 29Si-NMR, wherein a ratio of the sum of 3 times the integral value of T0 signal and 2 times the integral value of T1 signal and the integral value of T2 signal to the integral value of T3 signal ((3T0+2T1+T2)/T3) is from 0.3 to 1.2,
• wherein the T0 signal range is 35 ppm to 40 ppm;
• the T1 signal range is 48 ppm to 53 ppm;
• the T2 signal range is 55 ppm to 62 ppm;
• and
• the T3 signal range is 63 ppm to 72 ppm.

A composite structure, comprising:

• a metal substrate;
• and
• a coating layer disposed on the metal substrate,
• wherein the coating layer is formed by curing a coating material, the coating material includes an organic-inorganic hybrid resin, and the organic-inorganic hybrid resin is formed by reacting a polyol organic resin with a polysilsesquioxane polymer,
• wherein the organic-inorganic hybrid resin has T0, T1, T2, and T3 signals of 29Si-NMR, wherein a ratio of the sum of 3 times the integral value of T0 signal and 2 times the integral value of T1 signal and the integral value of T2 signal to the integral value of T3 signal ((3T0+2T1+T2)/T3) is from 0.3 to 1.2,
• wherein the T0 signal range is 35 ppm to 40 ppm;
• the T1 signal range is 48 ppm to 53 ppm;
• the T2 signal range is 55 ppm to 62 ppm;
• and
• the T3 signal range is 63 ppm to 72 ppm.