Patent · US Expired

Composite materials

US5429865A · kind A · utility

1Cited by

3References

4Claims

0Family size

Assignees

Rutgerswerke Aktiengesellschaft · DE
Akzo Nobel Faser AG · DE

Inventors

Axel Bottcher · Wesel, DE
Ulrich Stieber · Mülheim, DE
Michael Mohr · Wuppertal, DE
Achim Fels · Wuppertal, DE

Key dates

Filing date	Aug 23, 1994
Grant date	Jul 4, 1995
Priority date	—
Expiry date	Aug 23, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/676
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A composite material comprising a fabric of high-modulus fiber material and optionally a portion of other synthetic fiber material and a binder, the binder layers being essentially disposed only between fabric plies, the binder being a resol modified with polyvinyl butyral, the resol content being 4 to 20% by weight and the polyvinyl butyral content being 75 to 95% by weight of the binder suitable for projectile inhibiting laminates for the manufacture of protective helmets and armor against projectiles.

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