Akzo Nobel N.v.

Akzo N.v.

Hendrik Maatman

Hanneke Boerstoel

Marco Ypma

Jan Barend Westerink

Bernardus Maria Koenders

Jannes Veurink

Frederik Elkink

Egbert Wilhelmus Broeren

Johan L Ebregt

Franciscus A Schenkels

Hanueke Boerstoel

Process for preparing cellulose fibers

Process for preparing a spinnable, isotropic cellulose solution

Cellulose fibres and filaments having a high elongation at break

Method for the preparation of a material with high water and salt

Cellulose yarn and cord for industrial application

Fibres consisting wholly or substantially of a mixture of poly-p-phenylene terephthalamide and an aromatic copolyamide. They display an improved tensile strength and elongation at break if the mixture contains, as the copolyamide, (2-25% b.w. of) a polycondensation product of terephthalic acid, p-phenylene diamine and a monomer selected from the group consisting of piperazine, benzidine and 1,4-diamino anthraquinone. The fibres are particularly suitable for use in the manufacture of tire yarn.

Fibres and yarns from a blend of aromatic polyamides

Fibers made from a blend of poly-p-phenylene terephthalamide (PPDT) and a copolyamide derived from p-phenylene diamine, terephthalic acid and a naphthalenic difunctional monomer show improved properties, particularly tenacity, compared with PPDT fibers. The blend can be processed in the same manner as the PPDT polymer.

Fibers and yarns from a blend of aromatic polyamides

Fibers substantially consisting of a blend of aromatic polyamides comprising poly-p-phenylene terephthalamide and up to 50 wt. % of a second polyamide of related structure containing diaminobenzanilide units. The second polyamide should provide at least 0,1 wt. % of diaminobenzanilide units in the blend and is derived from aromatic monomers selected from the group comprising terephthalic acid, 4,4'-diamino benzanilide, p-phenylene diamine and p-amino benzoic acid. The fibers possess an elastic behavior particularly useful for tire yarn purposes.

Fibers are air-gap spun from a polymeric spinning mass comprising an aromatic polyamide (such as poly-p-phenyleneterephthalamide) by extrusion through a spinneret, passing through an air-gap, passage through a liquid (such as water), and exiting the liquid via an aperture which is variable in size. The use of such an aperture allows easier use of the equipment (especially the stringing up operation) and better fibre properties (such as tensile strength).

Variable-aperture process for the manufacture of filaments from aromatic

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Arnhem, Netherlands

Hendrik Maatman