Process for producing duroplastic molding compounds

US5977214A · kind A · utility

Assignee

• BAKELITE GMBH · DE

Inventors

• Herbert Knorr · Toronto, CA
• Peter Adolphs · Fröndenberg/Ruhr, DE
• Werner Nolte · Duisburg, DE
• Bernd Rau · Hemer, DE
• Bernhard Muller
• Michael Hermann · Tacherting, DE

Key dates

• Filing date: Jan 20, 1998
• Grant date: Nov 2, 1999
• Expiry date: Jan 20, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J3/22
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In the process according to the invention molding compounds based on duroplastic bonding agents are produced thereby that the bonding agents are mixed as a melt with the filler and additive substances. Curing is achieved thereby that the temperature of the mixture during the mixing process increases above the onset temperature of the curing reaction and, after the desired degree of curing has been attained, is suddenly lowered.