POLYTEREPHTHALATES AND COPOLYMERS THEREOF HAVING HIGH CLARITY AND PROCESS FOR MAKING SAME

POLYTEREPHTHALATES AND COPOLYMERS THEREOF HAVING HIGH CLARITY AND PROCESS FOR MAKING SAME

POLYTEREPHTHALATES AND COPOLYMERS THEREOF HAVING HIGH CLARITY AND PROCESS FOR MAKING SAME This invention relates to polyethylene terephthalate and copolymers thereof having high clarity and process for making the same. The invention provides a process for making PET using protonic acid catalysts whi...

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Hauptverfasser: SMITH RICHARD R, KELLEY, MELLIS M
Format: Patent
Sprache:eng ; fre
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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KELLEY, MELLIS M
description POLYTEREPHTHALATES AND COPOLYMERS THEREOF HAVING HIGH CLARITY AND PROCESS FOR MAKING SAME This invention relates to polyethylene terephthalate and copolymers thereof having high clarity and process for making the same. The invention provides a process for making PET using protonic acid catalysts which result in a polymer having a level of haze which is lower than has heretofore been attainable, using conventional metallic catalysts. Further, the polyesters so produced have a lower melt temperature which improves the processability.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title POLYTEREPHTHALATES AND COPOLYMERS THEREOF HAVING HIGH CLARITY AND PROCESS FOR MAKING SAME
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