Patent · US Active

Production of sodium diformate

US7868203B2 · kind B2 · utility

1Cited by

1References

30Claims

0Family size

Assignee

BASF SE

Inventors

Alexander Hauk · Ludwigshafen, DE
Stefan Gropp · Speyer, DE
Anna Valeska Lohmann · Schifferstadt, DE
Robert Heinz · Mannheim, DE

Key dates

Filing date	Dec 28, 2006
Grant date	Jan 11, 2011
Priority date	—
Expiry date	Dec 31, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/44
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for producing a solid sodium diformate preparation having a formic acid content of at least 35% by weight based on the total weight of sodium diformate preparation, in which, at elevated temperature, an aqueous solution (E) is produced which comprises sodium formate and formic acid in a molar ratio of HCOOH:HCOONa of greater than 1.5:1 and which has a molar ratio of HCOOH:H2O of at least 1.1:1, the aqueous solution (E) is brought to crystallization to obtain a solid phase (F) and a mother liquor (G), and the solid phase (F) is separated off from the mother liquor (G),

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