Patent ID: 11919853
Assignee: SULZER MANAGEMENT AG
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 11:
12. The method of claim 1, wherein the purified styrene composition satisfies at least one of the following conditions:
has a color of maximum 15 as defined by Pt-Co scale as per ASTM D5386,
comprises less than 2 ppmw of total elemental sulfur as contained in mercaptans, disulfides and thiophenes,
comprises less than 20 ppmw of oxygenates,
comprises less than 40 ppmw of impurities selected from the group consisting of: phenylacetylene, mixed xylenes, ethylbenzene, cumene, ethyltoluene, n-propylbenzene, and alpha-methyl styrene,
has a polymer content of less than 10 ppmw, and
has a total organic chlorine content of less than 2 ppmw.