Patent · US Expired

Process for the preparation of lead and zinc cyanurates

US4507270A · kind A · utility

5Cited by

1References

4Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Hubert Harth · Goldkronach, DE
Martin Witthaus · Goldkronach, DE
Wolfgang Gress · Wuppertal, DE

Key dates

Filing date	Dec 14, 1982
Grant date	Mar 26, 1985
Priority date	—
Expiry date	Dec 14, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D251/32
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Lead and zinc cyanurates are known to be suitable as the active ingredients in corrosion inhibiting coating compositions. The invention provides a simplified method of preparing these compounds by reacting lead or zinc oxide with cyanuric acid in an aqueous paste mixture at a somewhat elevated temperature without requiring the presence of a catalyst while applying a shearing force to said paste mixture.

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