Binder mixture

US5304225A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Arno Gardziella · Witten, DE
• Karl-Heinz Schwieger · Iserlohn, DE
• Peter Adolphs · Fröndenberg/Ruhr, DE
• Josef Suren · Haaren, DE
• Bertold E. Meier · Menden, DE

Key dates

• Filing date: Oct 25, 1991
• Grant date: Apr 19, 1994
• Expiry date: Oct 25, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/524
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Mixtures consisting of a phenolic resin, a hardener, and residues from bisphenol-A production in the ratio of 1:9 to 9:1 are used for the production of binder mixtures for thermostable molding materials. Usable for said purpose are binders with a minimum content of phenolic resin of 10%.