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:
Dec. 19, 1989
Filed:
Jul. 28, 1988
Applicant:
Inventors:
Klaus Ebel, Mutterstadt, DE;
Wolfgang Reuther, Heidelberg, DE;
Rolf Fikentscher, Ludwigshafen, DE;
Dietrich Lach, Friedelsheim, DE;
Rolf Streicher, Worms, DE;
Ortwin Schaffer, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528230 ; 528239 ; 528242 ; 528245 ; 528248 ; 528254 ; 528256 ; 528257 ; 528260 ; 528265 ;
Abstract
A tanning assistant useful in particular for tanning in combination with aluminum tanning agents is obtained by condensing melamine with glyoxal and/or glyoxylic acid and optionally with an aromatic compound which has a phenolic hydroxyl group or optionally with a condensable nitrogen compound.