Basf Corporation

Honeywell International Inc.

Wendel L Burton

Matthew B Hoyt

James R Bristow

Charles F Helms, Jr

John A Hodan

Gary W Shore

Karl H Buchanan

Robert H Blackwell

The present invention provides a process for producing yarn having reduced heatset shrinkage. Preferably, the fibers used in making the yarn are bicomponent fibers. The present invention also provides a process for producing yarn having reduced heatset shrinkage at reduced heat temperatures.

Process for producing yarn having reduced heatset shrinkage

At least two different liquid streams are sub-divided into a dense plurality of individually separated parallel pixels oriented in respective misregistered arrays. Therefore, an individual pixel of one of the liquid stream arrays will be surrounded by pixels of the other liquid stream array. These individual pixel arrays are then bought into contact with one another to form a multi-pixel liquid stream comprised of the misregistered pixel arrays of the two different liquid streams. The &ldquo;pixelated&rdquo; liquid stream&mdash;that is, the liquid stream containing in cross-section the misregistered pixel arrays of the two different liquid streams&mdash;may then be further processed. For example, the pixelated liquid stream may be subjected to further mixing by being directed along a tortuous flow path.

Multi-pixel liquid streams, especially fiber-forming polymeric streams, and methods and apparatus for forming same

A process for making ready-to-tuft, mock space-dyed bulked continuous filament yarn is a one-step process. It joins extruding, texturing, and interlacing to yield a yarn that may be tufted directly into carpet without further texturing or twisting. In another aspect, one or more additional strands may be inserted in the process. An apparatus for making the ready-to-tuft, mock space-dyed, bulked continuous filament yarn is described.

One step, ready-to-tuft, mock space-dyed multifilament yarn

Described is a composition imparting antistatic properties to polyamide materials and of the general formula: ##STR1## wherein R is a C.sub.1-9 alkyl group or hydrogen, Z is a difunctional chain modifier group, R' is a C.sub.1-4 alkyl group or hydrogen and x and y are between about 10 and about 50.

Antistatic composition

A high speed process for producing polyamide filaments utilizing one or more melt additives selected from the group consisting of water, alcohols, and organic acids to form a homogeneous polyamide-additive mixture so that upon extrusion of the mixture the polyamide has a relative viscosity in the range of from about 2.0 to about 3.0, melt-extruding the mixture to form filaments, quenching and drawing the filaments, and taking up the filaments at a speed greater than 4000 mpm. The process improves package build, yarn quality, and yarn processing conditions, and enables low elongations, high tenacity, and higher production speeds.

High speed process of making polyamide filaments

A yarn having antimicrobial properties comprising a plurality of individual synthetic polymer filaments wherein at least one of the filaments but less than 20% of the total of the individual filaments in the yarn has a sufficient amount of antimicrobial activity to inhibit microbial growth in the entire yarn.

Fiber-containing yarn possessing antimicrobial activity

The invention relates to the stabilization of antimicrobial bisphenoxarsine and bisphenarsazine compounds by incorporating with the antimicrobial compounds certain free radical scavengers including inorganic salts that contain transition metal cations, such as cuprous iodide, or organic compounds derived from piperidine, such as [bis(2,2,6,6-teteramethyl-4-piperidinyl) sebacate]. Articles, such as fibers, which contain these stabilized antimicrobial compounds have improved antimicrobial activity compared to articles containing the antimicrobial compound without the stabilizer.

Growing community of inventors

Arden, NC, United States of America

Wendel L Burton