Polyamide High Performance Gmbh

Polyamide High Performace Gmbh

Qiao Xiao

Britta Konrad

Ralf Koehnen

Hans A Graefe

Ralf Schnell

Frank Leymann

Samuel Mooney

Andreas Tulke

Gerhard Berberich

A melt-spun synthetic fiber and process for producing the fiber are described, the fiber including a fiber-forming synthetic polymer and a siloxane-based polyamide with a repeating unit having the formula (I) wherein n is a number in the range of 1-500 inclusive and specifics the number of repeating units of the siloxane-based polyamide, DP is the average degree of polymerization of the siloxane component of the siloxane-based polyamide and is in the range of 1-700 inclusive, X is selected from the group consisting of linear or branched alkylene chains having 1-30 carbon atoms, Y is selected from the group consisting of linear or branched alkylene chains having 1-40 carbon atoms, and each of the R-Rgroups is independently selected from the group consisting of methyl groups, ethyl groups, propyl groups, isopropyl groups, siloxane chains, phenyl groups, and phenyl groups that have been substituted with 1-3 members selected from the group consisting of methyl groups and ethyl groups.

Melt-spun synthetic fiber and process for producing the fiber

A yarn containing filaments made from synthetic polymers has a cross-section having at least 5 vertices, a titer of 1 to 7 dtex and a tenacity of at least 60 cN/tex. The filaments of the yarn preferably have a cross-section having 5 to 8 vertices, possibly with indentations between the vertices. The cross-section of the filaments is preferably star-shaped. The yarn preferably has a tenacity of 60 to 85 cN/tex, an elongation at break of 15% to 35%, a hot-air shrinkage of 4% to 10% and a stretch recovery of 250 to 400 cN/tex. The yarn is excellently suited for use in the manufacture of industrial fabrics, particularly airbag fabrics.

High-tenacity yarn with profiled filaments

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Erlenbach, Germany

Qiao Xiao