Patent · US Expired

Process for electrocoating bulk articles

US6436260B1 · kind B1 · utility

3Cited by

2References

9Claims

0Family size

Assignee

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

Inventors

Klaus Lorenz · Worms, DE
Gabriele Buettner · Ratingen, DE
Klausjoerg Klein · Wuppertal, DE

Key dates

Filing date	Nov 17, 2000
Grant date	Aug 20, 2002
Priority date	—
Expiry date	Nov 17, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D5/448
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

This invention is directed to a process for electrocoating bulk articles to provide a corrosion protective coating and comprises the following steps:(1) the bulk articles to be coated are placed in an electrically conductive receiving container and the container and bulk articles are electrocoated with an aqueous electrocoating composition containing a film forming binder and electrically conductive components;(2) baking the coated bulk articles and the receiving container to form an electrically conductive coating on the bulk articles and the container and removing the coated bulk articles from the container; and(3) repeating steps (1) and (2) at least once without any intermediate cleaning of the receiving container having an electrically conductive coating.The advantage of the novel process of this invention is that the receiving container can be used at least twice and up to six times without any intermediate cleaning or removal of the applied electrocoating layer.

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