Patent · US Expired

Binder for cathodic electrocoating

US5055168A · kind A · utility

7Cited by

13References

6Claims

0Family size

Inventors

Dirk Lawrenz · Ludwigshafen am Rhein, DE
Eberhard Schupp · Schwetzingen, DE
Thomas Schwerzel · Meckenheim, DE

Key dates

Filing date	Aug 24, 1988
Grant date	Oct 8, 1991
Priority date	—
Expiry date	Aug 24, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31678
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Binders for cathodic electrocoating which are water-dilutable on protonation with acids contain PA0 (A) from 50 to 95% by weight of a polymerization, polycondensation or polyaddition product having an average molecular weight of from 200 to 20,000, primary and/or secondary hydroxyl groups, primary, secondary and/or tertiary amino groups and an amine number of from 30 to 150 and PA0 (B) from 5 to 50% by weight of a mixture of PA1 (a) blocked polyisocyanates and/or urea condensation products and PA1 (b) one or more phenolic Mannich bases obtainable from PA2 (b.sub.1) one or more polycyclic polyphenols, PA2 (b.sub.2) formaldehyde or a formaldehyde-donating compound and PA2 (b.sub.3) one or more secondary aliphatic amines.

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