Coated enzyme preparation with an improved solubility

US6350728B1 · kind B1 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Kathleen Paatz · Goldkronach, DE
• Wilfried Raehse · Goldkronach, DE
• Werner Pichler · Kundl, AT
• Beatrix Kottwitz · Erkrath, DE

Key dates

• Filing date: Jun 10, 1999
• Grant date: Feb 26, 2002
• Expiry date: Jun 10, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12N9/98
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An enzyme granule and means for producing the enzyme granule is presented. The enzyme granule is composed of an enzyme, a carrier material, and a coating system of 5 to 70 percent by weight fine-particle inorganic water-insoluble pigment, 45 to 90 percent by weight of a water-soluble organic substance having a melting point of from 40 to 70° C., and 0 to 30 percent by weight of a flow improver. The granule can be produced by mixing an aqueous enzyme liquid with an inorganic or organic carrier material to form an enzyme compound, extruding the enzyme compound, spheronizing the extrudate, and applying an outer coating layer of the coating system listed above to form an enzyme granule having a mean particle size of 0.8 to 1.4 millimeters. The coated enzyme granule has increased storage stability, even coloration, reduced odor, and releases enzyme activity quickly in water. The enzyme granule is useful in solid detergents.