Patent · US Expired

Novel prepregs

US5075155A · kind A · utility

13Cited by

7References

10Claims

0Family size

Assignee

Rutgerswerke Aktiengesellschaft · DE

Inventors

Karl Jellinek · Iserlohn, DE
Berthold Meier · Menden, DE
Horst Duda · Iserlohn, DE
Winfried Reisel · Iserlohn, DE

Key dates

Filing date	May 16, 1990
Grant date	Dec 24, 1991
Priority date	—
Expiry date	May 16, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31518
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A prepreg comprising a porous support material impregnated with a binder consisting essentially of an epoxy resin, a bisphenol novolac hardener and 0.4 to 2.0% by weight based on the total binder of an imidazole and a method of preparing laminates of composite materials therefrom.

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