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Method of preparing delustered filaments and fibers

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专利汇可以提供Method of preparing delustered filaments and fibers专利检索,专利查询,专利分析的服务。并且The process for preparing delustered filaments and fibers is carried out by adding an amount of delustrant in a ratio of 5 to 20 parts by weight of delustrant per 100 parts of polymer chips under an inert blanket, grinding said delustrant with said polymer chips with grinding balls of about one-half to 1 1/4 inches in diameter by vibrating at about 2 to 10 mm amplitude and at a frequency of about 600 to 3,600 cycles per minute while incrementally increasing the temperature from about ambient to about 20* C. below the softening point of said polymer and obtaining a pigment dispersion of substantially less than 1 micron particle size and separating the balls from the pigmented polymer.,下面是Method of preparing delustered filaments and fibers专利的具体信息内容。

  • 2. The process of claim 1 wherein the ratio of grinding balls to delustrant and polymer chips is about 0.8 to 1.2 by volume.
  • 3. The process of claim 1 wherein the condensation polymer is selected from the group consisting of polycaproamide and polyester polymer chips.
  • 4. The process of claim 3 wherein the polymer chips are amorphous or crystalline.
  • 5. The process of claim 1 wherein the delustrant is selected from the group consisting of rutile titanium dioxide and anatase titanium dioxide.
  • 6. The process of claim 1 wherein the inert atmosphere Is selected from the group consisting of the inert gases, nitrogen and carbon dioxide.
  • 7. The process of claim 1 wherein the inert atmosphere is nitrogen.
  • 8. The process of claim 1 wherein the polymer chips are amorphous and the temperature incremental increase is carried out over a period of about 45 to 75 minutes.
  • 9. The process of claim 1 wherein the moisture content of the polymer chips is about 0.1 to about 0.5 percent.
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