Patent · US Expired

One-component aqueous coating systems containing a reactive additive component

US5705557A · kind A · utility

3Cited by

2References

8Claims

0Family size

Assignee

Huels Aktiengesellschaft · DE

Inventors

Hartwig Lange · Haltern, DE
Martina Ortelt · Flein, DE

Key dates

Filing date	Dec 7, 1995
Grant date	Jan 6, 1998
Priority date	—
Expiry date	Dec 7, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/8077
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A one-component aqueous coating system comprising (A) a hydrophilic polyacrylate polyol or polyesterpolyol containing at least one hydroxyl group, (B) a polyisocyanate which is water resistant at room temperature or a blocked polyisocyanate, (C) optionally a pigment or a conventional paint auxiliary, such as an antifoam, a levelling agent, a catalyst or a thixotropic agent, and a further reactive additive component (D), in a quantity of from 2 to 20% by weight, based on the overall solids content of (A), (B) and (D), the additive component (D) being characterized in that it contains at least one reactive OH, NH, NH.sub.2 or SH group and has a functionality of at least 1.5 to 3.0 relative to the crosslinking agent (B), a solubility in water of below 2% by weight and a molecular weight of 500-2000 g/mol.

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