Patent · US Active

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

US11891358B2 · kind B2 · utility

0Cited by

3References

11Claims

0Family size

Assignee

Sulzer Management AG · CH

Inventors

Rahul Khandelwal · Houston, US
Joseph C. Gentry · Houston, US
Randi W. Wytcherley · Bozeman, US
Kimberly Anderson · Bozeman, US
Meta Naulita-Ellis · Bozeman, US
Claudia Pudack · Zürich, CH
Celine Rioual · Chalampé, FR
Christoph Kirschner · Volketswil, CH
B. Bryant Slimp · Houston, US
Manfred Stepanski · Buchs, CH
Erik Temmel · Basel, CH

Key dates

Filing date	May 7, 2021
Grant date	Feb 6, 2024
Priority date	—
Expiry date	May 7, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2009/0086
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for preparing a purified styrene composition with a styrene yield of at least 80%. The method comprises providing a crude composition containing styrene, and subjecting the crude composition to at least one crystallization step. The at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.