Process for the production of storage stable wax dispersions

US5723137A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Bernd Wahle · Kaarst, DE
• Peter Waltenberger · Hollig, DE
• Claudia Klink · Willich, DE
• Thomas Foerster · Goldkronach, DE
• Thomas Engels · Goldkronach, DE

Key dates

• Filing date: Apr 29, 1996
• Grant date: Mar 3, 1998
• Expiry date: Apr 29, 2016

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M2200/40
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for producing a storage-stable, fine-particle wax dispersion by heating a mixture containing PA1 (A) 10% to 80% by weight of a wax, PA1 (B) 0.5% to 30% by weight of a hydrophilic nonionic dispersant having an HLB value of 8 to 18, and PA1 (C) 1% to 30% by weight of a hydrophobic co-dispersant selected from the group consisting of fatty alcohols containing 12 to 22 carbon atoms and partial esters of polyols containing 3 to 6 carbon atoms with fatty acids containing 12 to 22 carbon atoms, with the proviso that the weight ratio of component (B) to component (C) is in the range from 0.5:1 to 20:1, in the presence of 15% to 85% by weight of water to a temperature above the melting point of the mixture of components (A) to (C) to form a dispersion, heating the dispersion to its phase inversion temperature, and then cooling the dispersion to a temperature below its phase inversion temperature.