Pigment preparations for inkjet printing

US5969002A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Johan Kijlstra · Odenthal, DE
• Stephan Kirchmeyer · Leverkusen, DE
• Peter-Roger Nyssen · Dormagen, DE
• Dirk Pfutzenreuter · Leverkusen, DE
• Christian Wamprecht · Neuss, DE

Key dates

• Filing date: Sep 2, 1997
• Grant date: Oct 19, 1999
• Expiry date: Sep 2, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D17/001
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Pigment preparations comprising PA1 a) 0.1 to 70% by weight of pigment, PA1 b) 10 to 99% by weight of water, each based on the preparation, PA1 c) 0.1 to 100 % by weight, based on pigment used as component a), of a water-soluble polyisocyanate addition product, said polyisocyanate addition product having hydrophilic polyether chains and an isocyanate group content of not more than 1.0% by weight, containing 30 to 95% by weight of ethylene oxide units (molecular weight=44 g/mol) arranged within polyether chains and incorporated via monofunctional alcohols B), having an ionic group content of 0 to 200 milliequivalents/100 g of polyisocyanate addition product, and having been prepared by reaction of component A to E, the meaning of which is specified in the descriptive part, are highly useful as printing inks for inkjet printing.