Free flowing additive preparations, a process for producing them, and their use in powder coatings

US5735944A · kind A · utility

Assignee

• BYK-CHEMIE GMBH · DE

Inventors

• Karlheinz Haubennestel · Wesel, DE
• Alfred Bubat · Xanten, DE

Key dates

• Filing date: May 20, 1996
• Grant date: Apr 7, 1998
• Expiry date: May 20, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2491/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to free flowing additive preparations, particularly for powder coatings, which can be obtained by incorporating one or more liquid or viscous-adhesive additives in a wax melt consisting of one or more waxes, cooling the mixture obtained to a temperature below its melting point, and comminuting the solidified mixture or converting the mixture which is still liquid into a finely divided form and cooling the particles obtained. The invention also relates to a process for producing such preparations and to their use.