Process for the manufacture of low-phosphorus or phosphorus-free detergents containing aluminosilicates

US4215007A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA) · DE

Inventors

• Peter Krings
• Josef Huppertz · Hilden, DE
• Herbert Latka · Neuss, DE
• Gerhard Sperling
• Milan J. Schwuger · Haan, DE
• Heinz Smolka · Langenfeld, DE

Key dates

• Filing date: Oct 3, 1978
• Grant date: Jul 29, 1980
• Expiry date: Oct 3, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S159/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the manufacture of low-phosphorus or phorphorus-free spray dried detergents containing at least one water-soluble inorganic or organic compound exerting a washing or cleansing effect and at least one compound inhibiting alkaline earth metal ion precipitation comprising a finely-dispersed, water-insoluble, bound water-containing silicate compound having a calcium-binding power of at least 50 mg CaO/gm of anhydrous active substance and having the formula, combined water not shown, EQU (M.sub.2 /.sub.n O).sub.x . Me.sub.2 O.sub.3 . (SiO.sub.2).sub.y where M is a cation of the valence n, exchangeable with calcium, x is a number of from 0.7 to 1.5, Me is a member selected from aluminum and boron and y is a number of from 0.8 to 6, comprising spraying an aqueous slurry containing at least 50% by weight of the total solids of the final spray dried detergent into a conventional spray drier and simultaneously injecting at the area of the spray cone at least 25% of the total amount of said bound water-containing silicate compound, as a powder.