CRYSTALLINITY ADJUSTMENT FOR PET SOLID-STATE POLYMERIZATION PROCESS

Number of patents in Portfolio can not be more than 2000

United States of America

APP PUB NO 20250115708A1
SERIAL NO

18762991

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Abstract

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An apparatus for producing solid crystallized polymer particles. The apparatus includes a precrystallizer followed by a static vessel. The crystallinity of the polyester is increased in the static vessel compared to the crystallinity of the polyester from the precrystallizer or the single crystallizer. Inert gas is fed to the static vessel to remove oligomers and fines from the chip and assist with chip mobility. It can optionally include a single crystallizer. The static vessel can replace one or both of the crystallizers in a conventional polyester process. A method for making polyester particles is also described.

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Patent Owner(s)

Patent OwnerAddress
UOP LLC25 EAST ALGONQUIN ROAD PATENT DEPARTMENT DES PLAINES IL 60017

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ballarin, Gianfranco Chicago, US 1 0
Kebede, Mulugeta Tortona, IT 1 0
Shih, Raymond Kildeer, US 11 5

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