Process for the preparation of copolymeric hydrophobically modified polyglutamic acid derivatives and their use

US6737501B2 · kind B2 · utility

Assignee

• GOLDSCHMIDT HOLDING GMBH · DE

Inventors

• Thomas Dietz · Richmond, US
• Erika Messinger · Warburg, DE
• Peter Muss · Essen, DE
• Ute Schick · Essen, DE
• Christian Weitemeyer · Essen, DE
• Astrid Zündorff · Essen, DE

Key dates

• Filing date: Jan 3, 2003
• Grant date: May 18, 2004
• Expiry date: Jan 3, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for the preparation of copolymeric polypeptides, which comprises, in a first stage, reacting glutamic acid and/or derivatives thereof with amines in the absence of solvents and catalysts, under condensation conditions and, in a second stage, adding one or more further amino acids and/or derivatives thereof and/or one or more identical and/or further amines simultaneously or in any desired order, and reacting them with the reaction product of the first stage in the absence of solvents and catalysts.