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. 21, 1989
Filed:
Feb. 04, 1988
Applicant:
Inventors:
Sigismund Heimann, Ludwigshafen, DE;
Michele Vescia, Limburgerhof, DE;
Attila Bereck, Maxdorf, DE;
Hermann Sulz, Bobenheim-Roxheim, DE;
Ingrid Steenken, Bad Durkheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ; C07D / ;
U.S. Cl.
CPC ...
8575 ; 8576 ; 8589 ; 8917 ; 8924 ; 8610 ; 526917 ; 549 40 ; 558 59 ;
Abstract
Textile materials made of natural or synthetic polyamides or mixtures thereof are dyed in the presence of a cyclic ester of sulfurous acid with an aliphatic 1,2-diol in place of a customary pH regulant.