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:
Oct. 10, 2006
Filed:
Jul. 14, 2003
Mookandi Kanthimathi, Chennai, IN;
Palanisamy Thanikaivelan, Chennai, IN;
Jonnalagadda Rao, Chennai, IN;
Balachandran Unni Nair, Chennai, IN;
Thirumalachari Ramasami, Chennai, IN;
Mookandi Kanthimathi, Chennai, IN;
Palanisamy Thanikaivelan, Chennai, IN;
Jonnalagadda Rao, Chennai, IN;
Balachandran Unni Nair, Chennai, IN;
Thirumalachari Ramasami, Chennai, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
A process for the preparation of a synthetic tanning agent is disclosed whereby multi functional polymer is polymerized with sulfonated aromatic compound, pretreated with organic ligand to form an organo-polymeric matrix, which is essentially formaldehyde-free. The product has potential application in leather industry as an eco-friendly approach to chrome tanning by eliminating the conventional pickling process and the related problem of total dissolved solids (TDS) associated with the effluent. The present invention also provides for an exhaust aid for chrome due to its multiple carboxyl groups.