Patent · US Expired

Composite materials of multilayer duroplastic prepregs

US4839229A · kind A · utility

7Cited by

0References

6Claims

0Family size

Assignee

Rutgerswerke Aktiengesellschaft · DE

Inventors

Karl Jellinek · Iserlohn, DE
Bert Meier · Wesel, DE
Jurgen Zehrfeld · Voerde, DE

Key dates

Filing date	Mar 26, 1987
Grant date	Jun 13, 1989
Priority date	—
Expiry date	Mar 26, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/67
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

In a composite produced by hot pressing multilayer duroplastic prepregs of reinforcing materials impregnated with a duroplastic resin system, the improvement comprising at least one layer of an epoxy resin prepreg and at least one layer of a phenolic resin prepreg are pressed together, the composite having low fume density, increased non-flammability and good solvent and moisture resistance useful for production of structural components.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.