Johnny W Shadden

US Patent:

53486994, Sep 20, 1994

Filed:

Mar 2, 1994

Appl. No.:

8/205014

Inventors:

August K. Meyer - Jonesborough TN
Johnny W. Shadden - Kingsport TN
Candace M. Stipe - Kingsport TN
Leron R. Dean - Kingsport TN

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

B29C 4700

US Classification:

2641761

Abstract:

This invention relates to a process for preparing copolyester fibers having reduced spinning defects. More particularly, the invention relates to fibers having improved quality prepared from blends of certain poly(ethylene terephthalate) compositions modified with 1,4-cyclohexanedimethanol by melt spinning to produce filaments with decreased spinning defects while maintaining the chemical resistance, abrasion resistance, electrical and mechanical properties normally associated with copolyesters. These polymer blends when heated provide a fiber-forming polymer melt/dope which has excellent flowability and produces high quality fiber when subjected to conventional melt spinning, drawing, texturing, etc. Staple fibers prepared from the polymer blends of the invention when made into high loft battings have excellent fiberfill performance properties, particularly resilience and compression recovery.

US Patent:

57805202, Jul 14, 1998

Filed:

Dec 23, 1996

Appl. No.:

8/772236

Inventors:

Billy J. Reeves - Surgoinsville TN
Michael P. Ekart - Kingsport TN
William H. Heise - Kingsport TN
Johnny W. Shadden - Kingsport TN
Candace M. Stipe - Kingsport TN

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C08J 1104

US Classification:

521 485

Abstract:

A novel technique to treat post-consumer polyester for reuse in food-contact applications is described. The process comprises contacting contaminated post consumer polyester flake with at least one extraction solvent which is soluble in said contaminated flake at a temperature sufficient to allow rapid diffusion of contaminants from said polyester flake; and removing said extraction solvent containing said contaminants from said polyester flake.