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. 01, 1977
Filed:
Nov. 05, 1974
Applicant:
Inventor:
Albert Wurmli, Riehen, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C14C / ;
U.S. Cl.
CPC ...
8 9424 ; 8 9421 ; 260 49 ;
Abstract
The invention relates to reaction products of phenolsulphonic acid-urea-formaldehyde as agents for tanning of skins or leather. They are manufactured from a hydroxyphenylsulphone-hydroxyphenyl-monosulphonic acid which is condensed with an alkoxybenzene, this condensation product being reacted at elevated temperature in an aqueous-acid medium with an urea formaldehyde mixture or with a methylolated urea.