Polystyrene binders

US6726798B2 · kind B2 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Kai Boege · Goldkronach, DE
• Michael Dziallas · Soest, DE
• Klaus Helpenstein · Rheydt, DE
• Wolfgang Klauck · Meerbusch, DE
• Johann Klein · Goldkronach, DE
• Helmut Loth · Essen, DE
• Hartmut Urbath · Wuppertal, DE
• Udo Windhoevel · Monheim, DE

Key dates

• Filing date: Feb 11, 1998
• Grant date: Apr 27, 2004
• Expiry date: Jan 25, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2200/0632
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to polystyrene binders modified by fatty compounds. The fatty compounds used are, in particular, esters of fatty acids or fatty alcohols, more especially triglycerides of higher fatty acids, preferably natural fats and oils. They may be added to the binder in high concentrations without adversely affecting the properties of the binder. However, their addition is of advantage in regard to the wetting properties, resistance to water and, above all, hardness. Dispersion adhesives, hotmelt adhesives and sealing compounds in particular can be improved with the binders according to the invention.