Fusible chlorine-free vinyl acetate copolymer fibres
AssigneeWacker Chemie AG
InventorsPeter Tschirner, Johannes Kinkel, Dieter Gorzel
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Abstract
Fusible vinyl acetate copolymer fibers based on vinyl acetate copolymers are provided and contain (a) at least 40.0% by weight of vinyl acetate units; (b) 15.0 to 50.0% by weight of monomer units that consist of one or several chlorine-free, ethylenically unsaturated monomer units that consist of one or several ethylenically unsaturated monomers whose homopolymers have a glass transition temperature Tg from -100.degree. to 0.degree. C.
Claims10
Fusible vinyl acetate copolymer fibres based on vinyl acetate copolymers comprising
- a) at least 40.0% by weight of vinyl acetate units,
- b) 15.0 to 50.0% by weight of monomer units of one or more chlorine-free, ethylenically unsaturated monomers whose homopolymers have a glass transition temperature Tg of 40.degree. to 120.degree. C., and
- c) 0.1 to 15.0% by weight of monomer units of one or more ethylenically unsaturated monomers whose homopolymers have a glass transition temperature Tg of -100.degree. to 0.degree. C.
A process for the production of fusible vinyl acetate copolymer fibres which comprises A) free radical polymerizing in a medium selected from the group consisting of an organic solvent and an aqueous suspension, of a comonomer composition comprising at least 40.0% by weight of vinyl acetate, 15.0 to 50.0% by weight of one or more chlorine-free, ethylenically unsaturated monomers whose homopolymers have a glass transition temperature Tg of 40.degree. to 120.degree. C., and 0.1 to 15.0% by weight of one or more ethylenically unsaturated monomers whose homopolymers have a glass transition temperature Tg of -100.degree. to 0.degree. C., B) isolating the vinyl acetate copolymers, drying, and C) spinning the vinyl acetate copolymer into fibres.
Dependencies are inferred from the claim text.