Patent · US Expired

Carrier resin for pigment pastes, and its preparation and use

US5066758A · kind A · utility

10Cited by

4References

25Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Michael Honel · Mainz, DE
Peter Ziegler · Mainz, DE
Walter Sprenger · Dieburg, DE
Wolfgang Wendt · Wuppertal, DE

Key dates

Filing date	Jul 26, 1989
Grant date	Nov 19, 1991
Priority date	—
Expiry date	Jul 26, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S524/901
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Carrier resin for pigment pastes, and its preparation and use The invention relates to paste resins based on epoxide compounds, containing (a) specific quaternary ammonium groups, (b) OH groups and (c) isocyanate radicals which are bonded to the epoxy compound and of which at least 10 mol % are derived from a long-chain, monofunctional isocyanate having at least 8 carbon atoms, the average molecular weight (Mn) of these paste resins being 500 to 10,000. The invention furthermore relates to the preparation of these paste resins, to their use for pigment pastes and to these pigment pastes. Water-dilutable paints, in particular electrocoating paints which contain the pigment pastes according to the invention, give trouble-free surfaces and comparable film thicknesses, even on different substrates.

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