Patent · US Active

Method for separating high-boiling carboxylic acid vinyl ester/carboxylic acid mixtures

US9822059B2 · kind B2 · utility

0Cited by

13References

11Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Peter Gigler · Dachau, DE
Jürgen Stohrer · Pullach, DE

Key dates

Filing date	May 21, 2015
Grant date	Nov 21, 2017
Priority date	—
Expiry date	May 21, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method for separating a mixture containing at least one carboxylic acid vinyl ester of general formula R′—C(O)O—CH═CH2 and at least one carboxylic acid of general formula R′—COOH, wherein R′ in either case can be an aliphatic group having 12 to 22 C atoms or a cycloaliphatic group having 12 to 22 C atoms, or an aromatic group having 12 to 22 C atoms, and R′ can be identical or different, characterized in that the carboxylic acid is converted to its anhydride R′—C(O)—O—C(O)—R′ and the carboxylic acid vinyl ester is subsequently separated.

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