Patent · US Expired

Preparation of O-substituted hydroxylammonium salts

US5557013A · kind A · utility

2Cited by

3References

7Claims

0Family size

Assignee

BASF SE

Inventors

Michael Keil · Freinsheim, DE
Josef Wahl · Schifferstadt, DE
Ulrich Klein · Schifferstadt, DE
Wolfgang Will · Mannheim, DE

Key dates

Filing date	Oct 19, 1995
Grant date	Sep 17, 1996
Priority date	—
Expiry date	Oct 19, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/10
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Preparation of O-substituted hydroxylammonium salts of the formula I EQU H.sub.2 NOR x HX I where R is a C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkenyl radical, each of which may be halogen-substituted, and X is chlorine or bromine, by reacting in an integrated process, without isolation of intermediates PA1 a) acetone with hydroxylammonium sulfate and sodium hydroxide solution to give acetone oxime; PA1 b) treating the solution of acetone oxime thus obtained with sodium hydroxide solution and completely removing water, PA1 c) reacting the suspension of the acetone oxime Na salt thus obtained with alkylating agents at from 0.5 to 15 bar and at up to 140.degree. C. to give acetone oxime ethers; and PA1 d) cleaving the acetone oxime ethers with acids HX to give the products I, a homogeneous, nonpolar aprotic solvent being used in all process steps a) to d).

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