Stilbene brightener

US6596864B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Uwe Vogt · Monheim, DE
• Rolf Brockmann · Bensberg, DE
• Thomas Roick · Leverkusen, DE
• Karl-Rudolf Gassen · Odenthal, DE
• Ulrich Feldhues · Bensberg, DE

Key dates

• Filing date: Oct 30, 2001
• Grant date: Jul 22, 2003
• Expiry date: Oct 30, 2021

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to compounds of the formula (I) whereZ is SO3M, COOR1, CONR1, SO2NHR1, NHCOR1, COR2, or CN, whereR1 is M or C1-C3-alkyl andR2 is C1-C3-alkyl or phenyl,X is O or NR3, whereR3 is hydrogen or C1-C4-alkyl,Y is hydrogen or C1-C4-alkyl,M is hydrogen, an alkali metal cation, or an optionally substituted ammonium ion,n is from 4 to 35, andm is 0, 1 or 2.