Bayer Aktiengesellschaft

Ralf Miessen

Gerhard D Wolf

Francis Bentz

Hans E Kunzel

Carlhans Suling

Siegfried Korte

Ferdinand Kummeler

Joachim Kolbe

Gunter Blankenstein

Wolfram Wagner

Rudolf J Klee

Wolfgang Backer

Hans Wilsing

Fritz Schultze-Gebhardt

Gunther Hahn

Rudolf-Jurgen Klee

The invention relates to new finishing mixtures, which contain fatty acid alkanolamides having softening points above 70.degree. C. as anti-blocking components, for synthetic fibers, particularly fibers of polyacrylonitrile, which are used as staple fibers. The invention also relates to the use of these finishing mixtures for the finishing of staple fibers, particularly polyacrylonitrile-based staple fibers.

Finishes for stable fibers of synthetic polymers

Improved dressings for synthetic fibers, especially acrylonitrile fibers, comprise an anion-active preparation, a polyethylene dispersion and a dicarboxylic acid semi-ester salt.

Dressing agent for synthetic fibers

An improved method for the after-treatment of washed and dried fibre cable having a minimum mass of 250 ktex by crimping, fixing, cooling and optionally cutting or tearing is achieved in that the band width of the cable issuing from the drier with a covering density of at most 5 ktex/cm is reduced by at least 50% of the original band width with a corresponding increase in the packing density, is crimped in a stuffer box crimping means at a stuffer box pressure of from 4 to 10 N/cm and a stuffer box temperature of from 80.degree. to 95.degree. C., the crimping is fixed in or immediately after the stuffer box, the cable is deposited on the surface of an air-permeable conveyor belt, air is blown or sucked there through fibre package or conveyor belt and the cable is then optionally supplied to a tearing converter or a cutting machine.

Method for the multi-stage fibre cables and the apparatus required for it

High-shrinkage stretch-broken tows of acrylonitrile polymers are obtained by fixing with saturated steam at maximum temperatures of 140.degree. C. after drawing and before stretch breaking and stretch breaking at a draft of at least 30%.

Process for the production of highly shrinkable split tows of

The invention relates to a process for the production of dyed filaments from aromatic polyamides which are not modified with acid or basic groups.

Process for dyeing wet-spun aromatic polyamides in gel form

The invention relates to a process for the production of dyed filaments from aromatic polyamides which are modified with acid groups.

Process for dyeing dry-spun aromatic polyamides

The invention relates to a process for the production of dyed filaments of aromatic polyamides which have not been modified with acid or basic group.

Dyeing dry-spun aromatic polyamides

The invention relates to a process for the production of dyed filaments from aromatic polyamides which contain acid groups.

The invention relates to wet-spun modacrylic filaments with improved coloristic properties based on a polymer mixture, which comprises at least one acrylonitrilevinyl chloride copolymer and a chlorine-containing copolymer containing sulphonic acid ester groups or sulphuric acid ester groups.

Wet spun modacrylic filaments with improved coloristic properties

The invention relates to dry-spun modacrylic filaments with improved coloristic properties based on a polymer mixture, which comprises at least one acrylonitrile-vinyl chloride copolymer and a chlorine-containing copolymer containing sulphonic acid ester groups or sulphuric acid ester groups.

Growing community of inventors

Dormagen, Germany

Ralf Miessen