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Process for pellet formation from amorphous polyester 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C08G-063/18
  • B29C-035/02
출원번호 US-0375873 (1995-01-20)
발명자 / 주소
  • Stouffer Jan M. (Hockessin DE) Blanchard Elwood N. (Wilmington DE) Leffew Kenneth W. (Kennett Square PA)
출원인 / 주소
  • E. I. Du Pont de Nemours and Company (Wilmington DE 02)
인용정보 피인용 횟수 : 48  인용 특허 : 0

초록

The present invention relates to a process for forming robust, uniform, low molecular weight crystalline polyester particles. Such particles are useful for forming higher molecular weight polyesters, for example, by solid-state polymerization. Either conventionally-formed, essentially amorphous, non

대표청구항

A process for the crystallization of a low molecular weight polyester pellets having an average diameter of between 500 micrometers and 2 cm, which process comprises heating essentially amorphous solid pellets of a polyester oligomer, having a degree of polymerization (DP) of 2 to 40 and a glass tra

이 특허를 인용한 특허 (48)

  1. Ben Duh ; Ye-Mon Chen ; Ann Marie Corey, Apparatus for crystallization of polytrimethylene terephthalate.
  2. McGehee, James F., Apparatus for crystallizing polymer particles.
  3. Yamanaka, Koji; Iimura, Yoshihiro; Uesugi, Daisuke, Apparatus for producing bottle-type synthetic resin containers.
  4. Giardino, Carl J.; Griffith, David B.; Ho, Chungfah Howard; Howell, James M.; Watkins, Michelle Hoyt, Continuous process for producing bis(3-hydroxypropyl) terephthalate.
  5. Giardino,Carl J.; Griffith,David B.; Ho,Chungfah Howard; Howell,James M.; Watkins,Michelle Hoyt, Continuous process for producing poly (trimethylene terephthalate).
  6. Carl J. Giardino ; David B. Griffith ; Chungfah Howard Ho ; James M. Howell ; Michelle Hoyt Watkins ; Joseph James Duffy, Continuous process for producing poly(trimethylene terephthalate).
  7. Giardino, Carl J.; Griffith, David B.; Ho, Chungfah Howard; Howell, James M.; Watkins, Michelle Hoyt, Continuous process for producing poly(trimethylene terephthalate).
  8. Parker, Kenny Randolph; Lin, Robert; Isaac, Raymond; Hall, Duane Alan, Crystallized pellet/liquid separator.
  9. Bonner,Richard Gill, Direct coupling of melt polymerization and solid state processing for PET.
  10. Kurian Joseph V ; Liang Yuanfeng ; Putzig Donald Edward, Esterification process.
  11. Fenyvesi, Gyorgyi; Kurian, Joseph V., Fluorescent poly(alkylene terephthalate) compositions.
  12. Kurian,Joseph V.; Fenyvesi,Gyorgyi; Sunkara,Hari Babu, High crimp bicomponent fibers.
  13. Sakellarides, Stefanos L, Lidding structure based on aromatic polyester film, extrusion-coated with a sealable/peelable copolyester layer.
  14. Ekart, Michael Paul; Colhoun, Frederick Leslie; Jernigan, Mary Therese; Weinhold, Stephen; Armentrout, Rodney Scott, Low melting polyester polymers.
  15. McGehee, James F., Method and apparatus for crystallizing polymer particles.
  16. McGehee,James F., Method and apparatus for crystallizing polymer particles.
  17. Matthaei, Andr?; Locker, Peter; Ecker, Andreas; M?ller, Ralf, Method and device for producing granulates from intermediate products of thermo-plastic polyesters and copolyesters.
  18. Kenneth Wayne Leffew ; Andrew Robert Witt, Method for increasing solid state polymerization rate.
  19. Parthasarathy, Anju, Method for increasing solid state polymerization rate of polyester polymers.
  20. Christel, Andreas; Culbert, Allan Brent, Method for the production polyester with improved melting properties and crystallization properties.
  21. Hayward, Donald W.; Witham, Daniel L., Method for treating extremely small particles of polyethylene terephthalate.
  22. Robert Joseph Schiavone, Method of preparing modified polyester bottle resins.
  23. Schiavone Robert Joseph, Method of preparing modified polyester bottle resins.
  24. George, Scott Ellery; Fleenor, Coralie McKenna; Bowers, David T.; Miller, Richard Anthony; Thompson, Ricky, Non-blocking polymeric articles.
  25. Joseph V Kurian ; Yuanfeng Liang ; Donald Edward Putzig, Poly (trimethylene terephthalate) polymer composition.
  26. Chang,Jing C.; Miller,Ray W., Poly(trimethylene terephthalate) bicomponent fiber process.
  27. Kurian, Joseph V.; Godwin, Richard E.; Chang, Jing C., Poly(trimethylene terephthalate)/poly(alpha-hydroxy acid) bi-constituent filaments.
  28. Kurian, Joseph V.; Godwin, Richard E.; Chang, Jing-Chung, Poly(trimethylene terephthalate)/poly(alpha-hydroxy acid) biconstituent filaments.
  29. McGehee, James F.; Boveri, Giuseppina R.; Sechrist, Paul A., Process and apparatus for cooling polymer in a reactor.
  30. Yamanaka,Koji; Iimura,Yoshihiro; Uesugi,Daisuke, Process and apparatus for producing bottle-shaped container made of synthetic resin.
  31. Kapur, Vivek; Rajendran, Govindasamy Paramasivan; Leffew, Kenneth Wayne, Process for crystallizing at least a portion of a crystallizable condensation homopolymer to form solid particles.
  32. Duh Ben ; Chen Ye-Mon ; Corey Ann Marie, Process for preparing polytrimethylene terephthalate.
  33. Kimura, Hisashi, Process for production of polyester particles, polyester particles, polyester resin particles, and process for production thereof.
  34. McGehee, James F.; Richmond, John R.; Tegawa, Kaoru; Nakano, Yoshiki, Process for the purification of inert gases.
  35. Colhoun,Frederick Leslie; Ekart,Michael Paul; Jernigan,Mary Therese; Weinhold,Stephen, Process of making a container from polyester polymer particles having a small surface to center intrinsic-viscosity gradient.
  36. Kurian, Joseph V.; Fenyvesi, Gyorgyi; Sunkara, Hari Babu, Process of making high crimp bicomponent fibers.
  37. Hayes, Richard Allen; Hoffmann, Gregory W., Processes for producing very low IV polyester resin.
  38. Blanchard Elwood Neal ; Gochanour Craig Robert ; Leffew Kenneth Wayne ; Stouffer Jan M., Production of poly(trimethylene terephthalate).
  39. Stouffer Jan M. ; Blanchard Elwood Neal ; Leffew Kenneth Wayne, Production of poly(trimethylene terephthalate).
  40. Duh, Ben; Blackbourn, Robert Lawrence; Kiibler, Kathleen Suzanne; Tse, Cecilia Zuqi, Reduction of friability of poly(trimethylene terephthalate).
  41. McGehee, James F., Rotary processor.
  42. Weinhold, Stephen; Colhoun, Frederick Leslie; Ekart, Michael Paul; Gamble, Benjamin Bradford, Spheroidal polyester polymer particles.
  43. Ekart, Michael Paul; Jernigan, Mary Therese; Wells, Cory Lee; Windes, Larry Cates, Thermal crystallization of a molten polyester polymer in a fluid.
  44. Ekart, Michael Paul; Jernigan, Mary Therese; Wells, Cory Lee; Windes, Larry Cates, Thermal crystallization of a molten polyester polymer in a fluid.
  45. Ekart,Michael Paul; Jernigan,Mary Therese; Wells,Cory Lee; Windes,Larry Cates, Thermal crystallization of a molten polyester polymer in a fluid.
  46. Jernigan, Mary Therese; Ekart, Michael Paul; Samitier, Luciano Dalmacio; Wells, Cory Lee; Windes, Larry Cates, Thermal crystallization of polyester pellets in liquid.
  47. Jernigan,Mary Therese; Ekart,Michael Paul; Samitier,Luciano Dalmacio; Wells,Cory Lee; Windes,Larry Cates, Thermal crystallization of polyester pellets in liquid.
  48. Joseph Varapadavil Kurian, Transesterification process using yttrium and samarium compound catalystis.
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