Patent · US Expired

Use of triazine-based UVAs for use as quenchers in paper-making processes

US6143888A · kind A · utility

2Cited by

9References

13Claims

0Family size

Assignee

Ciba Specialty Chemicals Corporation · US

Inventors

Peter Rohringer · Allschwil, CH
Dieter Reinehr · Kandern, DE
Robert Hochberg · Glückstadt, DE
Georges Metzger · Mœrnach, FR

Key dates

Filing date	Dec 2, 1998
Grant date	Nov 7, 2000
Priority date	—
Expiry date	Dec 2, 2018

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06M13/358
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention provides a process for the inhibition (quenching) of the effect of an anionic fluorescent whitening agents on a substrate, comprising treating the substrate with a triazine UVA compound, some of which are new compounds.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.