Method for the production of surfactant granulates containing builders

US7186677B2 · kind B2 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA) · DE

Inventors

• Wilfried Rahse · Mülheim an der Ruhr, DE
• Bernhard Orlich · Dressendorf, DE
• Henriette Weber · Goldkronach, DE

Key dates

• Filing date: Jun 21, 2004
• Grant date: Mar 6, 2007
• Expiry date: Jun 21, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Provided is a method for producing surfactant granulates, comprising (a) providing a mixture of anionic surfactant acids and builder acids having a weight ratio of 1:100 to 1:20 of builder acid to surfactant acid; and (b) contacting the mixture with at least one solid neutralizing agent. The builder acid is selected from citric acid, tartaric acid, succinic acid, malonic acid, adipic acid, maleic acid, fumaric acid, oxalic acid, gluconic acid, nitrilotriacetic acid, aspartic acid, ethylenediaminetetraacetic acid, aminotrimethylenephosphonic acid, hydroxyethanediphosphonic acid, polyaspartic acids, polyacrylic acids, polymethacrylic acids, or copolymers thereof and has a particle size below 200 μm.