The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 1997
Filed:
Jul. 15, 1996
Friedhelm Lehrich, Lemfoerde, DE;
Siegmund Pohl, Ludwigshafen, DE;
Bernd Bruchmann, Ludwigshafen, DE;
Helmut Tesch, Roedersheim-Gronau, DE;
Roland Minges, Gruenstadt, DE;
Johann Swoboda, Ludwigshafen, DE;
Manfred Genz, Damme, DE;
Guenter Scholz, Lemfoerde, DE;
Joachim Streu, Dachau, DE;
BASF Aktiengesellschaft, , DE;
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.