US 2026/0055053 A1Published application

Method for the purification of ethylene cyanohydrin

AssigneeEvonik Operations GmbH

InventorsSebastian Bestgen, Günther Gräff, Maik Caspari, Thorben Schütz, Harald Trauthwein

Life of this patent

Estimating the term…

Abstract

A process purifies ethylene cyanohydrin by incubating an industrial grade ethylene cyanohydrin product with at least one titanium(IV)alkoxide. Ethylene cyanohydrin products have purities >99% and have less than 0.05% of ethylene glycol (EG), and/or have a water content of less than 1000 ppm.

Claims5

Dependent claims

Ethylene cyanohydrin (ECH), having a purity of >99% and comprising less than 0.05% of ethylene glycol (EG).

Dependencies are inferred from the claim text.

Facts

Application: 19/378,715Filed 4 Nov 2025
Priority: EP 20212450.98 Dec 2020
Published: 26 Feb 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

C07C 253/34
Separation; Purification; Stabilisation; Use of additives: separation; Purification
C07C 253/16
Preparation of carboxylic acid nitriles: by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified…
C07C 255/12
Containing cyano groups and singly-bound oxygen atoms bound to the same saturated acyclic carbon skeleton: containing cyano groups and hydroxy…
C07C
Acyclic or carbocyclic compounds

Family

Application18/256,111Division
Application19/378,715Division
US 12,486,220 B2Related patent
US 2024/0034715 A1Published application
US 2026/0055053 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…

patentgrepSearch patents

Back to results