Patent ID: 6423764
Filing Date: 2002-07-23
Classification: C08G,C08J

Abstract:
A method for producing colored polyester thermoplastic or resinous articles comprising the sequential steps ofa) providing a molten uncolored resin; b) introducing said resin of step â€œaâ€  into a pre-pellet formation device, optionally with at least one coloring agent; c) forming pellets of said resin of step â€œbâ€ , and optionally coating said pellets with at least one coloring agent; d) introducing the pellets of step â€œcâ€  into a solid stating vessel, optionally with at least one coloring agent; and e) molding the colored solid stated polyester of step â€œdâ€  into a polyester article; wherein a coloring agent is added in at least one of steps â€œbâ€ , â€œcâ€ , or â€œdâ€ .