Composition for producing light plaster, production of the foaming agent used therefor and its use

US6162839A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Wolfgang Klauck · Meerbusch, DE
• Hermann Kluth · Goldkronach, DE
• Wilfried Huebner · Langenfeld, DE
• Felicitas Kolenda · Monheim, DE

Key dates

• Filing date: Aug 11, 1998
• Grant date: Dec 19, 2000
• Expiry date: Aug 11, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B28/14
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A composition for producing light plaster contains as main constitutive elements particles of plaster in anhydride or hemihydrate form and at least one foaming agent. The composition is characterized in that the foaming agent generates gas after a delay of 1 minute to 24 hours and constitutes 0.1 to 50% by weight of the total dry mixture. Also disclosed is the use of said composition to produce in-situ cellular plastic and low density plaster moldings.