Patent · US Active

Polyurethane prepreg and composite fiber element produced therefrom

US9920175B2 · kind B2 · utility

0Cited by

2References

3Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Florian Hupka · Mülheim an der Ruhr, DE
Marcel Schornstein · Neuss, DE
Hartmut Nefzger · Pulheim, DE

Key dates

Filing date	Apr 14, 2014
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Dec 18, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2375/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to prepregs and to a method for producing storage-stable polyurethane prepregs (pre-impregnated fibers) using polyols with a high content of secondary hydroxyl end groups, to composite fiber components (composite components) which are produced from the prepregs and which can be obtained by impregnating fiber-shaped materials such as woven fabrics and fleece, and to a method for producing said composite fiber components.

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