Provided is a powder coating composition, whereby a cured film excellent in water resistance, chemical resistance and weather resistance, can be formed by single coating operation, wherein a fluorinated resin layer and a polyester layer are layer-separated in the process of melting and curing the powder coating composition. A powder coating composition comprising a fluorinated resin (A), a polyester polymer (B), a curing agent (C) and an ultraviolet absorber (D), wherein the polyester polymer (B) is a polyester polymer comprising units derived from a C.sub.8-15 aromatic polybasic carboxylic acid compound and units derived from a C.sub.2-10 a polyhydric alcohol compound.

Thermoplastic polymer particles suitable for use in additive manufacturing and related methods may comprise lignin. For example, said polymer particles may comprise a thermoplastic polymer, a lignin, optionally an emulsion stabilizer, and optionally a compatibilizer. Said polymer particles may be produced by melt emulsification methods and be highly spherical and, consequently, suited for selective laser sintering methods of additive manufacturing.