Heat-hardenable reaction resin mixtures for impregnating and embedding

US4582723A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Helmut Markert · Nuremberg, DE
• Wolfgang Rogler · Erlangen, DE
• Klaus Kretzschmar · Erlangen, DE
• Wolfgang Bendel · Leonberg, DE

Key dates

• Filing date: Jun 27, 1984
• Grant date: Apr 15, 1986
• Expiry date: Jun 27, 2004

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01B3/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a heat-hardened molded material produced from a resin mixture of a polyfunctional epoxide, a polyfunctional isocyanate and a reaction accelerator, which optionally contains additives and/or fillers. The objective is to make a resin mixture which permits the manufacture of a highly heat-resistant molded material, and which has at the same time a high-temperature cycle resistance and good mechanical properties. For this purpose, the polyfunctional epoxide of the resin includes a polyoxyalkylene glycol polyglycidyl ether.