Process for the preparation of specific polyethylene glycol di (2-(4-chloro-2-methylphenoxy)-propionic acid ester mixtures

US5675032A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Lutz Heuer · Blomberg, DE
• Heinz-Joachim Rother · Krefeld, DE
• Volker Glock · Krefeld, DE

Key dates

• Filing date: Apr 4, 1995
• Grant date: Oct 7, 1997
• Expiry date: Apr 4, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/337
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an-economically and ecologically advantageous process, which is easy to carry out, for the preparation of specific polyethylene glycol diesters of 2-(4-chloro-2-methylphenoxy)-propionic acid, and to the substance mixture obtainable by this process and the use thereof as a root penetration inhibitor in building materials and insulating compositions, such as, for example, bitumen.