E.i. Dupont De Nemours and Company

Invista North America S.a.r.l.

Jing Chung Chang

Joseph V Kurian

Christopher P Junk

George Vassilatos

James Edmond Van Trump

Young D Nguyen

Ray W Miller

Nirmal K Agarwal

Sam Louis Samuels

Shekhar Subramoney

Yuanfeng Liang

Matthew Arthur Page

Raymond Longhi

H Vaughn Samuelson

Richard Lee Dommel

Ramunas L Valteris

Richard E Godwin

Robert Mamoru Linek

Alfred Harold Thompson

Donald P Nolan

Joseph P McKeown

John J Kozlowski

K Ranjan Samant

Gregory A Urove

Steven D Beare

Joseph Varapadavil Kurian

Joseph P Mckeown

Substantially flame retardant-free carpets comprising poly(trimethylene terephthalate) yarn having minimal carrier and, optionally, minimal antistatic agent, are disclosed, as are methods for making such carpets.

Substantially flame retardant-free 3GT carpet

This invention relates to poly(trimethylene terephthalate)/poly(alpha-hydroxy acid) biconstituent filaments, methods for making the same and end uses thereof.

Poly(trimethylene terephthalate)/poly(alpha-hydroxy acid) bi-constituent filaments

Improved staple fibers and processes for producing them are provided. The processes are particularly useful for forming staple fibers from poly(trimethylene terephthalate), especially carpet staple fibers. The processes include prewetting undrawn yarns and drawing the fibers under wet and warm conditions, thermo-fixing the texture, and drying at relatively low temperatures. Fibers produced according to the processes disclosed herein have improved properties and reduced brittleness as compared to fibers prepared using conventional processes.

Process of making staple fibers

Dyed poly(trimethylene terephthalate) fibers having a lightfastness of 4 or higher after approximately 480 kJ incident UV radiation, and processes for preparing the fibers, are provided. The fibers are useful in automotive applications and other uses wherein UV absorption is likely.

Poly(trimethylene terephthalate) fibers useful in high-UV exposure end uses

A process for the preparation of a side-by-side or eccentric sheath-core bicomponent fiber wherein each component comprises a different poly(trimethylene terephthalate) composition.

Poly(trimethylene terephthalate) bicomponent fiber process

Disclosed are side-by-side or eccentric sheath-core bicomponent fibers comprising a poly(trimethylene terephthalate) component and a poly(tetramethylene terephthalate) component and preparation and use thereof.

3GT/4GT biocomponent fiber and preparation thereof

A side-by-side or eccentric sheath-core bicomponent fiber wherein each component comprises a different poly(trimethylene terephthalate) composition and wherein at least one of the compositions comprises styrene polymer dispersed throughout the poly(trimethylene terephthalate), and preparation and use thereof.

Process for preparing poly(trimethylene terephthalate) bicomponent fibers

Highly crimped, fully drawn bicomponent fibers, prepared by melt-spinning, followed by gas-flow quenching, heat treatment and high speed windup, are provided, as are fine-decitex and highly uniform polyester bicomponent fibers.

Method for high-speed spinning of bicomponent fibers

A process for preparing poly(trimethylene terephthalate) fibers including (a) providing a poly(trimethylene terephthalate) composition comprising about 0.05 to about 10 weight % ionomer and (b) spinning the polymer composition to form fibers. In addition, a poly(trimethylene terephthalate) fiber including poly(trimethylene terephthalate) with about 0.1 to about 10 weight % ionomer dispersed throughout the poly(trimethylene terephthalate), and use thereof in yarns, fabrics, and carpets, as well as the yarns, fibers and fabrics.

Poly(trimethylene dicarboxylate) fibers, their manufacture and use

A process for preparing poly(trimethylene dicarboxylate) multifilament yarns and monofilaments. One process for preparing poly(trimethylene dicarboxylate) multifilament yarns includes (a) providing a polymer blend including poly(trimethylene dicarboxylate) and about 0.1 to about 10 weight % styrene polymer, by weight of the polymer in the polymer blend, (b) spinning the polymer blend to form poly(trimethylene dicarboxylate) multiconstituent filaments containing dispersed styrene polymer, and (c) processing the multiconstituent filaments into poly(trimethylene dicarboxylate) multifilament yarn including poly(trimethylene dicarboxylate) multiconstituent filaments containing styrene polymer dispersed throughout the filaments. Another process includes spinning at a speed of at least 3,000 m/m and processing a blend including poly(trimethylene dicarboxylate) to form partially oriented poly(trimethylene dicarboxylate) multifilament yarn. A poly(trimethylene terephthalate) yarn including poly(trimethylene terephthalate) multiconstituent filament containing styrene polymer dispersed throughout the multiconstituent filament. The invention is also directed to uses of the filament yarns and monofilament.

Process of making poly (trimethylene dicarboxylate) fibers

A process for preparing poly(trimethylene terephthalate) fibers comprising (a) providing a poly(trimethylene terephthalate) composition comprising about 0.05 to about 5 mole % tetramethylene terephthalate repeat units and (b) spinning the polymer composition to form fibers. Poly(trimethylene terephthalate) fiber comprising poly(trimethylene terephthalate) composition comprising about 0.05 to about 5 mole % tetramethylene terephthalate repeat units, as well as yarns, fabrics (e.g., woven, knitted, and nonwoven fabrics) and carpets. A poly(trimethylene terephthalate) composition comprising about 0.05 to about 5 mole % tetramethylene terephthalate repeat units.

Poly(trimethylene terephthalate) fibers, their manufacture and use

A process of making a pigmented shaped article comprising: (a) providing polytrimethylene terephthalate chips and two or more colored pigmented chips each containing at least one different color pigment; (b) heating the polytrimethylene terephthalate chips and colored pigmented chips to a temperature of about 200-about 280&deg; C. to melt the chips and form a polymer composition comprising the polytrimethylene terephthalate and at least one color pigment; and (c) forming a shaped article from the polymer composition.

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Boothwyn, PA, United States of America

Jing Chung Chang