| 摘要 |
This present disclosure relates to a polyesterurethane and to coating compositions comprising the polyesterurethane as the crosslinkable component that are especially useful as automotive clearcoats that are very resistant to environmental etch damage. The polyesterurethane is the reaction product of reaction product of a hydroxyl functional branched polyester prepolymer with an isocyanate functional compound and the branched polyester prepolymer is the reaction product of one or more monofunctional carboxylic acid monomers, one or more hydroxyl functional monomers having a hydroxyl functionality of 3 to 10 and one or more polycarboxylic acid monomers.
|
