Patent · US Expired

Epoxy resin mixtures for prepregs and composites

US5759690A · kind A · utility

8Cited by

9References

16Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang von Gentzkow · Kleinsendelbach, DE
Jürgen Huber · Erlangen, DE
Heinrich Kapitza · Fürth, DE
Wolfgang Rogler · Erlangen, DE

Key dates

Filing date	Mar 10, 1997
Grant date	Jun 2, 1998
Priority date	—
Expiry date	Mar 10, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31525
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Epoxy resin mixtures for the production of prepregs and composites contain the following components: PA1 a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, made up of structural units derived from PA2 (a) polyepoxy compounds with at least two epoxy groups per molecule, and PA2 (b) phosphinic acid anhydrides, phosphonic acid anhydrides, or phosphonic acid half-esters; PA1 an amine-substituted aromatic sulfonic acid amide or hydrazide as a hardener; PA1 an amino hardening accelerator.

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