Patent ID: 6858367

Claim:
In a binder resin forming a resin powdery product, the improvement wherein the binder resin comprises a polyhydroxyalkanoate having a monomer unit composition represented by the following Formula (1): A m B(1 −m ) (1) wherein A is at least one selected from monomer units represented by the following Formula (2), B is at least one selected from monomer units represented by the following Formulas (3) and (4), and m is 0.01 or more and 1 or less: wherein n is 0 to 10, k is 3 or 5, and R is any group selected from groups represented by the following Formulas (5) to (8): wherein; in Formula (5), R1 is selected from a hydrogen atom (H) and a fluorine atom (F), and q is selected from integers of 1 to 8; in Formula (6), R2 is selected from a hydrogen atom (H) and a fluorine atom (F), and r is selected from integers of 1 to 8; in Formula (7), R3 is selected from a hydrogen atom (H) and a fluorine atom (F), and s is selected from integers of 1 to 8; and in Formula (8), R4 is selected from a hydrogen atom (H) and a fluorine atom (F), and t is selected from integers of 1 to 8.