Process for the manufacture of preparations with a low dust content

US4344766A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jurgen Lahrs · Cologne, DE
• Klaus Schubert · Karlsruhe, DE
• Claus Gosling
• Dorde Jovcic · Leichlingen, DE
• Harald Gleinig · Odenthal, DE
• Reiner Skerhut · Cologne, DE

Key dates

• Filing date: Apr 20, 1981
• Grant date: Aug 17, 1982
• Expiry date: Apr 20, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K3/22
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Pulverulent preparations with a low dust content, in particular dyestuff powders, are obtained when the customary dustproofing agents are not added before the drying process and also are not sprayed directly onto the product to be dustproofed, but are allowed to act on the pulverulent product in the form of an aerosol. The average particle size of the aerosol is less than 10.mu..