OPAQUE CONTAINERS CONTAINING COLORED RECYCLED POLYESTER
First Claim
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1. A composition comprising a colored recycled polyethylene terephthalate and an opacifying material.
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Abstract
The present invention relates to a composition comprising a colored recycled polyethylene terephthalate (RPET) and an opacifying material. The composition can further comprise a virgin polyethylene terephthalate (PET), a high gas barrier or an oxygen scavenging compound. Suitable opacifying material, suitable high gas barrier polymer and suitable oxygen scavenging compound are disclosed herein. Other embodiments of the present invention include articles produced from these compositions and processes for producing these compositions.
36 Citations
19 Claims
- 1. A composition comprising a colored recycled polyethylene terephthalate and an opacifying material.
- 10. An article comprising a colored recycled polyethylene terephthalate and an opacifying material.
- 12. An article made from a polyester resin comprising a recycled polyethylene terephthalate and an opacifying material.
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14. A process for making a polyester resin performs comprising:
- pelletizing unsorted clean, colored and opaque flakes, introducing said pelletized flakes into an injection-molding machine to melt said flakes and injection-molding said molten flakes into a preform.
- View Dependent Claims (15, 16)
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17. A process for making colored, opacified recycled polyethylene terephthalate pellets comprising:
- pelletizing unsorted, colored and opaque recycled polyethylene terephthalate flakes and optionally solid-state polymerization.
- View Dependent Claims (18)
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19. A process for making colored, opacified recycled polyethylene terephthalate pellets comprising:
- adding unsorted, colored and opaque recycled polyethylene terephthalate flakes in a glycolysis process, or to the monomer after esterification, to form a colored monomer; and
polycondensating said monomer to a polyester resin.
- adding unsorted, colored and opaque recycled polyethylene terephthalate flakes in a glycolysis process, or to the monomer after esterification, to form a colored monomer; and
Specification