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Improved process for forming polyarylene sulfide fibers

A polyarylene sulfide and fiber technology, applied in the field of polyarylene sulfide fibers, can solve the problems of lack of mechanical strength of polymers, limited utility of plastic materials, etc.

Inactive Publication Date: 2013-02-13
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, references suggest that due to the lack of sufficient mechanical strength of these polymers, their utility as plastic materials in industrial applications is very limited

Method used

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  • Improved process for forming polyarylene sulfide fibers
  • Improved process for forming polyarylene sulfide fibers
  • Improved process for forming polyarylene sulfide fibers

Examples

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Embodiment

[0115] The invention will be further defined in the following examples. It should be understood, that these Examples, while indicating preferred embodiments of the invention, are given by way of illustration only. From the above discussion and these Examples, one skilled in the art can ascertain the characteristics of this invention, and without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to different usages and condition.

[0116] Material

[0117] The following materials were used in the examples. All commercial materials were used as received unless otherwise indicated. 309 PPS and 317 polyphenylene sulfide was obtained from Ticona Inc. (Florence, KY) in pellet form. Tin(II) 2-ethylhexanoate (90%) and zinc oxide (99%) were obtained from Sigma-Aldrich (St. Louis, MO). Tin (II) stearate (98%) was obtained from Acros Organics (Morris Plains, NJ). Zinc stearate (99%) was obtained from Honeywell R...

Embodiment 1

[0146] This example shows the results using a polyphenylene sulfide composition comprising 0.5% by weight tin(II) ethylhexanoate based on the weight of PPS. A PPS composition was prepared, melted, and extruded as described in Comparative Example F, except that half a weight part of tin(II) ethylhexanoate was used instead of zinc stearate. Initial die deposition times are reported in Table 1.

Embodiment 2

[0148] This example shows results using a polyphenylene sulfide composition comprising 0.5% by weight tin(II) ethylhexanoate. A PPS composition was prepared, melted, and extruded as described in Comparative Example C, except that 0.5 parts by weight tin(II) ethylhexanoate was mixed with 309PPS (70 parts) and Fortron PPS (30 parts) mixed. Initial die deposition times are reported in Table 1.

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Abstract

An improved process for forming polyarylene sulfide fibers is provided. The process comprises forming at least one fiber from a polymer melt comprising a polyarylene sulfide and at least one tin additive comprising a branched tin(II) carboxylate. Using such a melt, the fiber forming continuity is improved compared to that of the native polyarylene sulfide melt processed under the same conditions.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority to US Provisional Patent Application 61 / 316,059, filed March 22, 2010, which is hereby incorporated by reference in its entirety. field of invention [0003] This invention relates to polyarylene sulfide fibers formed from polymer melts. Background of the invention [0004] The commercial thermoplastic polymer polyphenylene sulfide (PPS) exhibits limited thermal and thermo-oxidative stability, which in turn limits its utility in applications where high temperatures (eg, greater than about 180° C.) and air are present. Generally, PPS is processed in a melt through molding and fiber spinning at a temperature of about 300° C. or higher, and partial decomposition occurs, resulting in a loss of polymer properties and a decrease in yield. During fiber forming operations, material is deposited over time near the orifice through which the polymer is extruded. The formation of such die...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F6/76D01D5/08
CPCD01F1/10D01F6/765D01D5/08D01F6/76
Inventor J.C.里特J.M.波利诺M.T.波蒂格L.克里什纳墨菲J.C.豪H.V.萨米尔森M.阿夫古斯蒂Z-Z.黄R.J.杜夫
Owner EI DU PONT DE NEMOURS & CO