Toho Tenax Europe Gmbh

Akzo Nobel N.v.

Silke Witzel

Markus Schneider

Bernd Wohlmann

Michael Zeitler

Nils Kottner

Silke Stusgen

Sabine Kummer-Dörner

Silke Stüsgen

Jens Pusch

Sabine Kummer-Dorner

A pre-impregnated yarn including a bundle of reinforcing fiber filaments having a bundle interior and a bundle outer side, a first resin composition, and a second resin composition. The first resin composition includes at least one urethane resin, H1, produced from a reaction of a bifunctional aromatic epoxy compound based on bisphenol A, an aromatic polyisocyanate, and a polyalkylene glycol; an oxyalkylated bisphenol A resin, H2; and aromatic polyhydroxy ether P1. The filaments are impregnated with and at least partially connected via the first resin composition. The first resin composition is present in a concentration of 0.1 to 4 wt % relative to a total weight of the pre-impregnated yarn. The second resin composition is on the bundle outer side in the form of particles or drops adhering to the filaments, and is in a concentration of 0.5 to 14 wt % relative to the total weight of the pre-impregnated yarn.

Impregnated reinforcing fiber yarn and its use in producing composite materials

Growing community of inventors

Wuppertal, Germany

Silke Witzel