Teijin Aramid B.v.

Akzo Nobel N.v.

Akzo N.v.

Twaron Products B.v.

Stephanus Willemsen

Willem E Weening

Herman J Geursen

Anne Steenbergen

Huibert Kwint

Herman J Guersen

Johannes Janssen

Mattheus Van Leeuwen

Hendrik Berend Olde

Martinus Peters

Hans Jansen

Harmannus Aaldrik Maria Stuut

Herman Stuut

Linear tension member having multiple fibers and at least 0.1 wt % of solid hydrophobic organic nanoparticles with a mean diameter of 10-300 nm and a standard deviation &#x3c3; of at least 10% of the mean value, which linear tension member has a linear mass density of at least 10.000 dtex and has at least 80 wt % of fibers having a mass density higher than 1 g/cm. The disclosure also pertains to the use of such particles for making a linear tension member buoyant and to a process to manufacture a floating linear tension member.

Floating linear tension member comprising multiple fibers

A method improves bundle cohesiveness of a bundle of aramid yarns, and decreasing its friction coefficient. The method includes adding to the bundle of yarns 0.1-3.0 wt. %, based on the yarn weight, of a water-soluble or water-dispersible film forming binding agent, followed by treating the bundle of yarns with an oil having an intrinsic viscosity less than 100 mm/s.

Method for improving aramid yarn bundle cohesiveness

The invention pertains to a method for improving filament cohesiveness of chopped aramid fiber including the steps of impregnating a film-forming binding agent into the fiber, drying the fiber, optionally applying a finish to the fiber, and chopping the fiber to pieces of 1 to 16 mm length, characterized in that the fiber prior to applying the binding agent is subjected to a twisting process to obtain a fiber having a twisting level of 10 to 150 tpm and that the chopping of the fiber is performed in a rotary chopper.

Method for improving filament cohesiveness of chopped aramid fiber

The invention relates to a method for preventing or reducing deposit forming of superabsorbent material and/or oil onto guide rollers during the process of applying a superabsorbent water-in-oil emulsion onto a yarn wherein the oil is a mixture comprising saturated hydrocarbons, characterized in that the at least 70 wt % of the hydrocarbons have 20 to 32 carbon atoms.

Method for preventing deposit forming on guide rollers

The invention pertains to an aramid filament yarn provided with a finish comprising &#x3e;1.5 wt. % of an organic substance with a conductivity of &#x3e;4 mS/cm, measured as a 50 wt. % finish composition in water at 20&#xb0; C., having a specific electric resistance of the yarn &#x3c;2.5&#xb7;10Ohm&#xb7;cm, and to a method of making said yarn. Further, the invention pertains to the use of said finish for making conductive cables, particularly for making elevator cables.

Aramid filament yarn provided with a conductive finish

The invention pertains to a finish composition for treating yarns comprising a mixture of silicone oil emulsion and a wax emulsion wherein the amount of silicone oil is 0.5 to 30 wt. %, the amount of wax is 1.5 to 45 wt. %, the total of silicone oil and wax is 2 to 60 wt. %, and the ratio silicone oil:wax is <1, and to a yarn comprising the same. Preferably, the yarn is aramid yarn.

Finish composition for treating yarns

A process for the manufacture of a yarn provided with a superabsorbent material having a swelling value of at least 60 and having hydrophilic properties which is capable of absorbing and retaining quantities of water, wherein the process includes applying an aqueous solution of a water-soluble pre-superabsorbent material onto the yarn followed by drying and heating of the yarn in order to cross-link or to polymerize the water-soluble pre-superabsorbent material to the superabsorbent material. The superabsorbent material provides water blocking capability to the yarn so that it is suitable for use as a strength member in watertight optical communication cables.

Process for manufacture of superabsorbent-coated yarn

Process for treating a substrate with a superabsorbent material

An aramid yarn, preferably poly(p-phenylene terephthalamide), is coated with a water swellable superabsorbent material. The swelling value of the yarn is at least 60. The superabsorbent provides water blocking capability to the yarn, so that it is suitable for use as a strength member, for example, in water tight optical communication cables. The yarn is made by successively treating an aramid yarn with a water-in-oil emulsion, a superabsorbent material being present in the water phase of the emulsion, and removing the liquid components from the treated yarn by evaporation.

Superabsorbent-coated aramid yarn and a process for manufacturing such a

A multifilament yarn of an aromatic polyamide, in particular poly-p-phenylene terephthalamide, is provided with an adhesive coating of a cured epoxy compound, the yarn having a free epoxide content not higher than 10 mmoles/kg. The yarn is made by spinning a solution of an aromatic polyamide into a coagulation bath and subjecting the resulting filaments to the subsequent steps of washing, applying a curable epoxy compound and one or more alkaline curing agents, curing and winding the yarn thus treated into a package. The resulting yarn can be processed into a reinforcing element for, e.g., tires in a one-step dipping process. A cord made from the yarn displays an improved resorcinol-formaldehyde-latex dip pickup.

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Rheden, Netherlands

Stephanus Willemsen