Process and apparatus for preparing purified styrene composition from styrene containing feedstock

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11919853
APP PUB NO 20230174441A1
SERIAL NO

17922540

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Abstract

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A method for preparing a purified styrene composition is provided. The method includes providing a crude composition and subjecting the crude composition to at least one crystallization step. The crude composition contains 70% by weight or more styrene based on the total weight of the crude composition. The at least one crystallization step comprises at least one of a static crystallization stage and a dynamic crystallization stage. The crude composition contains at least one impurity selected from the group consisting of: color inducing species, oxygenates, sulfur species, alpha-methylstyrene, and mixtures thereof.

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Patent Owner(s)

Patent OwnerAddress
SULZER MANAGEMENT AGWINTERTHUR SWITZERLAND WINTERTHUR ZURICH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Anderson, Kimberly Bozeman, US 6 69
Gentry, Joseph C Houston, US 31 253
Khandelwal, Rahul Katy, US 8 4
Kirschner, Christoph Volketswil, CH 3 0
Naulita-Ellis, Meta Bozeman, US 3 0
Pudack, Claudia Zürich, CH 8 5
Rioual, Celine Chalampé, FR 3 0
Slimp, B Bryant Houston, US 3 0
Stepanski, Manfred Buchs, CH 18 40
Temmel, Erik Basel, CH 5 0
Wytcherley, Randi Belgrade, US 4 0

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