Hoechst Celanese Corporation

Hna Holdings, Inc.

Cheng K Saw

Balaram B Gupta

O Richard Hughes

John A Flint

Malcolm E Kenny

Bruce A Harrington

Dieter K Kurschus

Fibers and yarns of polyethylene terephthalate (PET) and PET copolymers with a sheath/filamentous core microstructure are formed from unoriented and non crystalline 'as spun' source fibers and yarns by drawing to high draw ratios in one step. Fibers and yarns with the sheath/filamentous core microstructure are stiffer than commercial PET fibers. Fibers and yarns with the sheath/filamentous core microstructure may be annealed and relaxed to increase their dimensional stability without loss of the sheath/filamentous core microstructure.

Method and apparatus of transferring a packet and generating an error

Sodipotassic copper tube silicate species of the family Na.sub.2--2x K.sub.2x CuSi.sub.4 O.sub.10 are synthesized by combining, with an organo silicate at essentially room temperature, stoichiometric amounts of a copper salt, and at least one salt of potassium and sodium, in an aqueous alcohol solution to form a gel. The gel is then sintered at elevated temperature and for a time sufficient to form a crystalline specie of Na.sub.2--2x K.sub.2x CuSi.sub.4 O.sub.10.

Novel synthesis of sodipotassic copper tube silicates

Growing community of inventors

Summit, NJ, United States of America

Cheng K Saw