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:
Mar. 12, 2002
Filed:
Jan. 07, 2000
Hendrikus Luitjes, Putten, NL;
Jacco Van Haveren, Ede, NL;
Augustinus Emmanuel Frissen, Wageningen, NL;
Gerard Hubert Schmets, Horn, NL;
Frans Jeanette Maria Leonardus Peters, Eygelshoven, NL;
Erica Gertruda Arnolda Kroon, Roermond, NL;
Johannes Albertus Van Der Waal, Roermond, NL;
Akcros, Chemicals, Manchester, GB;
Abstract
&bgr;-Ketoesters and their enamines derived from alcohols or polyols are suitable for stabilizing polymers, and are represented by formulae: A[(O—CHR —Z—CHR ) —O—CO—CHR —CO—R ] and A[(O—CHR —Z—CHR ) —O—CO—CR ═C(—NHR )—R ] , wherein: A is the residue of an alcohol or polyol selected from hydroxyalkanoic acid esters, sugars and their glycosides, sugar alcohols, sugar acids and their esters, and oligosaccharides; m is an integer number from 0 up to 6; n is a number from 1 up to the total number of hydroxyl groups in the polyol; R is hydrogen, C -C alkyl, C -C alkenyl or cycloalkyl (alkyl) or C -C aryl or aralkyl; R is hydrogen, C -C alkyl, C -C hydroxyalkyl or C -C alkenyl; R is C -C alkyl, alkoxy or alkylamino, C -C alkenyl, alkanoylmethyl, alkoxycarbonylmethyl or cycloalkyl(alkyl), C -C aryl, aryloxy, arylamino, aralkyl, aralkoxy or aralkylamino, or C -C aroylmethyl, aryloxycarbonylmethyl or arylcarbamoylmethyl; R and R are independently hydrogen or methyl; and Z is a direct bond, CH , CHOH, CH—O—CO—CHR —CO—R or O—CO—CR ═C(—NHR )—R .