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:
Nov. 03, 1981
Filed:
Feb. 15, 1980
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C14C / ;
U.S. Cl.
CPC ...
8 9426 ; 8 9427 ;
Abstract
A pulverulent spray dried chrome tanning agent having about 1.8 to 2.6 mols of formate/mol Cr.sub.2 O.sub.3, a basicity of at least about 42% and a sulphate content of at least about 1.8 mols SO.sub.3 /mol Cr.sub.2 O.sub.3, maintaining its solubility in water over a prolonged period of time compared with a similar composition having a lower sulphate content, i.e. the latter becomes increasingly water-insoluble with the passage of time.