Pigment preparations

US5889065A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Stephan Kirchmeyer · Leverkusen, DE
• Michael Kressner · Leichlingen, DE
• Josef Leitermann · Leverkusen, DE
• Peter-Roger Nyssen · Dormagen, DE
• Christian Wamprecht · Neuss, DE

Key dates

• Filing date: Sep 8, 1997
• Grant date: Mar 30, 1999
• Expiry date: Sep 8, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2475/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to pigment preparations containing PA1 (a) a pigment, PA1 (b) a monohydroxy ether, a polyether polyol, and/or a polyester polyol, PA1 (c) a polyisocyanate addition product having an NCO content of <1.0 wt. % and 30 to 95 wt. % of ethylene oxide units arranged within polyether chains and derived from monofunctional alcohols (B) that is prepared at an NCO index of 100 to 600 by reacting PA2 (A) a polyisocyanate component having an (average) NCO functionality of 1.7 to 6 and an NCO content of 5 to 65 wt. % with PA2 (B) 5 to 100 equivalent %, based on (A), of monohydric poly-ether alcohols having a molecular weight of 150 to 10,000 and an ethylene oxide unit content of 40 to 99.5 wt. %, PA2 (C) 0 to 20 equivalent %, based on (A), of a monofunctional isocyanate-reactive compound other than monohydric alcohol (B), PA2 (D) 0 to 50 equivalent %, based on (A), of an isocyanate-reactive tertiary amine compound, and PA2 (E) 0 to 20 equivalent %, based on (A), of a formative component containing at least two NCO-reactive groups.