Patent · US Active

Process for the production of multi-layer coatings

US8313835B2 · kind B2 · utility

1Cited by

6References

6Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Giannoula Avgenaki · Goldkronach, DE
Marcus Brunner · Wuppertal, DE
Marc Chilla · Sprockhövel, DE
Volker Paschmann · Essen, DE
Bruno Wokalek · Heiligenhaus, DE

Key dates

Filing date	Sep 29, 2006
Grant date	Nov 20, 2012
Priority date	—
Expiry date	Aug 17, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31504
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A process for the production of multi-layer coatings comprising the successive steps: 1) applying an 8 to 20 μm thick coating layer from an aqueous coating composition A onto a substrate provided with an EDC primer, 2) applying a 5 to 15 μm thick base coat layer from an aqueous coating composition B onto the previously applied coating layer, 3) applying a clear coat layer onto the base coat layer, 4) jointly curing the three coating layers, wherein coating compositions A and B being different from each other and wherein the coating composition A contains at least one metal platelet pigment having a thickness from 10 to 100 nm in a proportion corresponding to a pigment/resin solids ratio by weight from 0.06:1 to 0.2:1.

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