Patent · US Expired

Pulverulent coating substance

US4150211A · kind A · utility

29Cited by

4References

15Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hanns P. Muller · Leverkusen, DE
Kuno Wagner · Leverkusen, DE
Hans-Joachim Kreuder · Krefeld, DE

Key dates

Filing date	Feb 16, 1978
Grant date	Apr 17, 1979
Priority date	—
Expiry date	Feb 16, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S524/904
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to mixtures which are suitable for use as lacquer powders or as binders for lacquer powders and which are solid and capable of being pulverized at temperatures below about 40.degree. C. and liquid at temperatures above about 150.degree. C., which mixtures comprise PA1 (a) an isocyanate component having masked isocyanate groups; PA1 (b) a polyhydroxyl component; and, optionally PA1 (c) the conventional auxiliary agents and additives; Characterized in that the substance used as component (a) is a polyisocyanate having isocyanurate groups and isocyanate groups which are masked with lactams. The present invention also relates to the use of these mixtures as lacquer powders or as binders for lacquer powders for coating any heat-resistant substrate by the conventional coating methods employed for lacquer powders.

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