Patent · US Active

Method for purification of 4-hydroxyacetophenone

US10981854B2 · kind B2 · utility

0Cited by

0References

19Claims

0Family size

Assignees

SYMRISE AG · DE
SINO-HIGH (CHINA) CO. LTD. · CN

Inventors

Ravikumar Pillai · Emerson, US
Sven Siegel · Ankum, DE
Ev Suess · Holzminden, DE
Karolin Bolte · Boffzen, DE
Yan Liuxin · Nanjing, CN

Key dates

Filing date	Aug 24, 2020
Grant date	Apr 20, 2021
Priority date	—
Expiry date	Aug 24, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C49/825
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Methods of purifying crude 4-hydroxyacetophenone using one or more solvents as well as products comprising or consisting of crystallized 4-hydroxyacetophenone and one, two or more solvent(s). The products may be obtained or obtainable from the methods for purifying crude 4-hydroxyacetophenone.

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