Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1994-03-02
1994-09-20
Acquah, Samuel A.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
528272, 528307, 5283086, 525444, B29C 4700
Patent
active
053486994
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.
REFERENCES:
patent: 3386145 (1968-06-01), Harris
patent: 4035441 (1977-07-01), Endo et al.
patent: 4263364 (1981-04-01), Seymour et al.
patent: 4668453 (1987-05-01), Ebnesajjad et al.
patent: 4668764 (1987-05-01), Satou
K. V. Datye et al., Chemical Processing of Synthetic Fibers and Blends, John Wiley & Sons, New York, p. 38 (1984).
A. B. Auerbach et al., Polymer Engineering and Science, vol. 30, No. 17, pp. 1041-1050 (1990).
Research Disclosure, vol. 252, No. 44 (No. 25244).
Dean Leron R.
Meyer August K.
Shadden Johnny W.
Stipe Candace M.
Acquah Samuel A.
Eastman Chemical Company
Thallemer John D.
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