Elastic fiber
AssigneeDsm N.V.
InventorsCornelis W. M. Bastiaansen, Franciscus W. M. Gelissen, Edwin Willems, Cornelis Versluis
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Abstract
An elastic fiber of a mixture containing a copolyether ester or a copolyester ester and a chemically crosslinked rubber, which fiber has a permanent elongation after 100% stretching of at most 9% and an elongation at break of at least 450% and a process for producing an elastic fiber comprising the melt spinning of a mixture of a copolyether ester or a copolyester ester and a rubber to form a fiber, in which the rubber is completely or almost completely crosslinked at the moment the fiber is formed, and are disclosed.
Claims17
An elastic fiber measuring in at least one direction at most 250 μm, wherein the elastic fiber contains a mixture of a copolyester ether or a copolyester ester and a chemically crosslinked rubber, has a permanent elongation after 100% stretching of at most 9% and has an elongation at break of at least 450%.
An elastic fiber obtained from a mixture containing a copolyester ether or a copolyester ester and a chemically crosslinked rubber, said elastic fiber having a permanent elongation after 100% stretching of at most 3%.
An elastic fiber obtained by melt spinning a mixture of a copolyester ester or a copolyester ether and a rubber to form a fiber measuring in at least one direction at most 250 μm, wherein the rubber is completed or almost completely crosslinked at the moment said fiber is formed.
Dependencies are inferred from the claim text.