Patent · US Active

Amphoteric fluorescent whitening agents

US7566349B2 · kind B2 · utility

0Cited by

6References

3Claims

0Family size

Assignee

Ciba Specialty Chemicals Corporation · US

Inventors

Goetz Scheffler · Weil am Rhein, DE
Peter Rohringer · Allschwil, CH
Ian J. Fletcher · Magden, CH

Key dates

Filing date	Jun 11, 2007
Grant date	Jul 28, 2009
Priority date	—
Expiry date	Jun 11, 2027

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/30
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The present invention provides novel bis-triazinylaminostilbene amphoteric fluorescent whitening agents, comprising both individual components and mixtures thereof, a process for their preparation, intermediates useful for their preparation and use of the fluorescent whitening agents for the fluorescent whitening of paper.

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