Process for producing free-flowing granules with superheated steam

US5591707A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Wilfried Raehse · Goldkronach, DE
• Johann F. Fues · Grevenbroich, DE
• Herbert Pattberg · Hilden, DE
• Kathleen Paatz · Goldkronach, DE

Key dates

• Filing date: Apr 12, 1995
• Grant date: Jan 7, 1997
• Expiry date: Apr 12, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F26B21/04
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for producing free-flowing granules comprising the steps of (a) drying with superheated steam an aqueous mixture containing at least one surfactant selected from the group consisting of anionic surfactants and nonionic surfactants to form carrier granules having a porous inner structure, and (b) impregnating the porous inner structure of the carrier granules with an aqueous coating composition selected from the group consisting of wetting agents, detergents, cleaning agents, and mixtures thereof, to form an impregnated carrier granule.