Process for the production of polyester fibers and filaments which can be dyed in the absence of carriers and the filaments and fibers produced thereby
AssigneeBayer Aktiengesellschaft
InventorsArmin Kohler, Peter Hoffmann, Herbert Pelousek, Eduard Specht
Life of this patent
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Abstract
The invention relates to polyester filaments and fibers and a process for the production of such polyester filaments and fibers which can be dyed in the absence of a carrier which comprises introducing into the polymer to be spun a silicate charged with an inert gas melt, spinning the mixture obtained in known manner and further processing into filaments or fibers.
Claims6
A process for the production of polyester filaments and fibers which can be dyed in the absence of a carrier which comprises introducing into the polymer to be spun from 0.1 to 4.0% by weight based on the mixture as a whole of a silicate charged with an inert gas, melt spinning the mixture obtained in known manner and further processing into filaments or fibers, wherein said silicate has a three dimensional network and contains channels or vacuoles which can be charged with inert gas.
Dependencies are inferred from the claim text.