Basf Corporation

Ling Yeh

Hugh G Harrelson

Richard Kotek

Wei Ping Li

Andrew M Coons, Iii

Gary W Shore

James P Sullivan

James M Philyaw

A process for producing hollow polyamide filaments having at least one continuous void that adds to a fiber-forming polyamide from about 0.05% to about 5% of a triazine compound prior to extrusion of fiber. The process results in a greater closure of voids and larger void space than when the triazine compound is not used.

Process of making hollow filaments

The present invention provides an improved method and apparatus for uniformly treating strand-like material. The apparatus comprises a coiler head having a coiler diameter d and a conveyor belt having a belt width w, wherein the ratio of the coiler diameter d to the belt width w is from about 1.05:1 to about 1.40:1. The method comprises treating the strand-like material in such apparatus.

Method and apparatus for treating strand-like material

Claimed are a method of making a direction indicating carpet, useful in temporarily unlighted building hallways and rooms. Symbols are tufted into the carpet using zinc sulfide copper activated pigments in concentration of 2% in the fiber.

Phosphorescent directional signals and manufacturing method

A method for producing carpet yarn produces yarn having substantial soil hiding, soil repelling and resistance to staining with acid dye characteristics. The yarn is made by forming at least one hollow trilobal fiber from a molten nylon polymer having an amine end group level below about 25 meq/kg, the fiber having a modification ratio of about 2 and a void volume of at least 3%; quenching the formed fiber sufficiently to solidify the molten nylon; immediately after quenching, at a yarn speed of at least 300 mpm, finishing the fiber with spin finish containing fluorochemical; fully drawing the finished fiber; texturing the finished yarn by a hot fluid texturing process; and subsequently, applying to the textured yarn a sulfonated stainblocker, the stainblocker being heated to at least 50.degree. C. and applied while the fiber temperature is at least about 100.degree. C. in the stainblocker application step. The yarn travels at a rate sufficient to permit fixation of the stainblocker while minimizing penetration of stainblocker into the yarn.

Process for making soil and stain resistant carpet fiber

A multilobal synthetic polymeric filament has a single approximately axially extending central void. The total cross-sectional void area of the filament is between about 3 and about 10 percent void.

Hollow trilobal cross-section filament

Capillary groups for a spinnerette include sheath and core openings to produce a spun bi-component fiber having a trilobal or triangular profile. A triangular or trilobal configured outer sheath arrangement surrounds a trilobal cross-section core which is alternatively oriented with its lobes toward the sheath tips or rotated 60 degrees thereto. Different sheath arrangements are also disclosed for producing bi-component sheath/core trilobal fibers with and without voids.

Spinnerette for producing bi-component trilobal filaments

A method of distinguishing two or more variant dye fibers in greige form is disclosed. The technique involves adding sufficient pigment to one of the fibers to make it visible to the eye.

End identifier for multidye yarn

The present invention pertains to thermoplastically processable synthetic polymers and fibers produced therefrom which are rendered flame retardant by certain organic pigments which are substantially unreactive with the polymer. The flame retardant materials include:

Growing community of inventors

Anderson, SC, United States of America

Ling Yeh