E.i. Dupont De Nemours and Company

Invista North America S.a.r.l.

Anthony J Soroka

Garret D Figuly

Marc Bruce Goldfinger

Gregory Paul Weeks

H Vaughn Samuelson

Rakesh H Mehta

A hetero-composite yarn useful in making garments comprises a combined biconstituent yarn and a companion yarn, wherein the biconstituent yarn comprises an axial core comprising a thermoplastic elastomeric polymer, and a plurality of wings attached to the core and comprising a thermoplastic, non-elastomeric polymer.

Hetero-composite yarn, fabrics thereof and methods of making

A stretchable synthetic polymer fiber comprising an axial core formed from an elastomeric polymer, and two or more wings attached to the core and formed from a non-elastomeric polymer, wherein preferably at least one of the wings is mechanically locked with the axial core. The fibers can be used to form garments, such as hosiery. A spinneret pack for producing such fibers is also provided.

Stretchable fibers of polymers, spinnerets useful to form the fibers, and articles produced therefrom

Ceramic fibers of alumina modified with zirconia or hafnia derived from soluble salts of the metal are made by first polymerizing a mixture of alumina and aqueous aluminum chlorohydroxide before addition of the metal oxide precursor. Subsequent concentration and spinning steps are carried out at low temperatures.

Growing community of inventors

Hixson, TN, United States of America

Anthony J Soroka