Patent ID: 8912246

Claim:
A crosslinkable curing super-branched polyester, comprising a compound represented by formula (I): wherein HBP is the skeleton of the super-branched polyester; both a and b are positive integers; the sum of a and b is less than or equal to n; and n is greater than or equal to 10 but less than 80; A is represented by formula (II): wherein R is methyl or hydrogen atom; N is represented by formula (III): wherein the mole ratio of N relative to the total moles of A and N is greater than or equal to 30% by mole, and the ratio of the total moles of A and N relative to the total moles of HBP skeleton multiplied by n is greater than or equal to 0.5 but less than or equal to 1; wherein the super-branched polyester skeleton is derived from an aliphatic super-branched polyester having n hydroxyl-terminated groups.