4-substituted bis(2,6-diisopropylphenyl)-carbodiimides, their preparation, their use, and 4-substituted 2,6-diisopropylphenyl isocyanates which can be used for their preparation

US5532414A · kind A · utility

Assignee

• BASF SE

Inventors

• Friedhelm Lehrich · Bohmte, DE
• Siegmund Pohl · Ludwigshafen, DE
• Bernd Bruchmann · Ludwigshafen, DE
• Helmut Tesch · Bad Dürkheim, DE
• Roland Minges · Havelsee, DE
• Johann Swoboda · Ludwigshafen, DE
• Manfred Genz · Ostercappeln, DE
• Guenter Scholz · Bohmte, DE
• Joachim Streu · Dachau, DE

Key dates

• Filing date: Sep 24, 1993
• Grant date: Jul 2, 1996
• Expiry date: Sep 24, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/907
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

4,4'-disubstituted bis-2,6-diisopropylphenyl)carbodiimides of the formula (I) ##STR1## where R is 1-methyl-1-phenylethyl, phenoxy or tert-butyl, a process for their preparation, their use as stabilizers against hydrolytic degradation of polyaddition and polycondensation products containing ester groups, and the novel 4-(1-methyl-1-phenylethyl)-2,6-diisopropyl-, 4-phenoxy-2,6-diisopropyl- and 4-tert-butyl-2,6-diisopropylphenyl isocyanates which can be used for their preparation.