Fibrillated acrylic fibre
OwnerJohn Fagge, Ulrich Holzingerinventors
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Abstract
Fibrillated acrylic fibers which are suitable for oxidation in the form of staple fibers are formed as copolymers of acrylonitrile and an unsaturated carboxylic acid such as itaconic acid or methacrylic acid. A further monomer may also be included, such as methacrylate, methylmethacrylate or vinyl acetate. Fibers having a Canadian Freeness value of 350-500, and a decitex value of 1.2 to 1.7 may be produced.
Claims16
A fibrillated oxidisable acrylic staple fibre which is formed from a copolymerisation of acrylonitrile and an unsaturated carboxylic acid.
A method of manufacture of oxidised acrylic fibres, in which a staple acrylic fibre is made from a copolymerisation of acrylonitrile and an unsaturated carboxylic acid, and then fibrillated in the gel state prior to drying and oxidation.
Dependencies are inferred from the claim text.