RU2000132718A - SHEET FOAMED POLYPROPYLENE FORMED WHEN HEATING - Google Patents

SHEET FOAMED POLYPROPYLENE FORMED WHEN HEATING

Info

Publication number
RU2000132718A
RU2000132718A RU2000132718/04A RU2000132718A RU2000132718A RU 2000132718 A RU2000132718 A RU 2000132718A RU 2000132718/04 A RU2000132718/04 A RU 2000132718/04A RU 2000132718 A RU2000132718 A RU 2000132718A RU 2000132718 A RU2000132718 A RU 2000132718A
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RU
Russia
Prior art keywords
foam
sheet
blowing agent
polymer
polypropylene
Prior art date
Application number
RU2000132718/04A
Other languages
Russian (ru)
Other versions
RU2219198C2 (en
Inventor
Мартин Х. ТЬЮСИМ
Мартин С. КОРНЕЛЛ
Киунг В. Сух
Кристофер П. КРИСТЕНСОН
Чунг П. Парк
Original Assignee
Дзе Дау Кемикал Компани
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Filing date
Publication date
Application filed by Дзе Дау Кемикал Компани filed Critical Дзе Дау Кемикал Компани
Publication of RU2000132718A publication Critical patent/RU2000132718A/en
Application granted granted Critical
Publication of RU2219198C2 publication Critical patent/RU2219198C2/en

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Claims (25)

1. Способ получения полимерного листового пенопласта, включающий (i) экструзию через мундштук экструдера с кольцеобразным соплом вспенивающейся композиции, включающей по меньшей мере один полипропиленовый полимер и по меньшей мере один порообразователь, при давлении, температуре и скорости экструзии, достаточных для предотвращения вспенивания композиции до выхода из сопла, при условиях, достаточных для получения трубы из пенопласта с плотностью по меньшей мере 16 кг/м3, но не более 200 кг/м3, содержанием открытых ячеек менее 70%, с периметром по длине окружности поперечного сечения трубы по меньшей мере 1 м и толщиной пенопласта, равной по меньшей мере 2 мм, но не более 25 мм, в котором порообразователь используют в количестве 0,2 - 4,4 мол/кг полимера, (ii) самопроизвольное охлаждение пенопласта до температуры ниже температуры плавления полипропилена и (iii) резку трубы из пенопласта вдоль радиусов для получения листового пенопласта, в котором по меньшей мере 70% массы полимера составляет полипропилен, имеющий прочность расплава в интервале от 30 до 60 cN, когда она измерена при 190oС.1. A method of producing a polymer sheet foam, comprising (i) extruding through the mouthpiece of an extruder with an annular nozzle of an expandable composition comprising at least one polypropylene polymer and at least one blowing agent, at a pressure, temperature and extrusion rate sufficient to prevent foaming of the composition to exit from the nozzle, under conditions sufficient to obtain a foam tube with a density of at least 16 kg / m 3 but not more than 200 kg / m 3 , open cell content of less than 70%, perimeter m along the circumference of the pipe cross section of at least 1 m and a foam thickness of at least 2 mm, but not more than 25 mm, in which the blowing agent is used in an amount of 0.2 to 4.4 mol / kg of polymer, (ii) spontaneous cooling of the foam to a temperature below the melting point of polypropylene; and (iii) cutting the foam pipe along radii to produce a foam sheet in which at least 70% of the polymer is polypropylene having a melt strength in the range of 30 to 60 cN when measured at 190 o C. 2. Способ по п. 1, в котором твердыми веществами пенопласта, составляющими по меньшей мере 80% массы полимера в таком листе, является полипропилен с прочностью расплава в интервале от 25 до 60 cN, которая измерена при 190oС.2. The method according to p. 1, in which the foam solids comprising at least 80% of the polymer mass in such a sheet is polypropylene with a melt strength in the range from 25 to 60 cN, which is measured at 190 o C. 3. Способ по п. 1, в котором используют пенопласт имеющий плотность по меньшей мере 32 мг/м3.3. The method of claim 1, wherein a foam having a density of at least 32 mg / m 3 is used . 4. Способ по п. 1, в котором используют лист, имеющий ширину по меньшей мере 1,1 м и толщину по меньшей мере 5 мм. 4. The method of claim 1, wherein a sheet having a width of at least 1.1 m and a thickness of at least 5 mm is used. 5. Способ по п. 1, в котором используют лист, имеющий ширину по меньшей мере 1,1 м и толщину по меньшей мере 7 мм. 5. The method of claim 1, wherein a sheet having a width of at least 1.1 m and a thickness of at least 7 mm is used. 6. Способ по п. 1, в котором используют лист, имеющий ширину по меньшей мере 1,1 м и толщину по меньшей мере 8 мм. 6. The method of claim 1, wherein a sheet having a width of at least 1.1 m and a thickness of at least 8 mm is used. 7. Способ по п. 1, в котором используют лист, имеющий ширину по меньшей мере 1,2 м и толщину по меньшей мере 5 мм. 7. The method of claim 1, wherein a sheet having a width of at least 1.2 m and a thickness of at least 5 mm is used. 8. Способ по п. 1, в котором используют лист, имеющий ширину по меньшей мере 1,2 м и толщину по меньшей мере 7 мм. 8. The method of claim 1, wherein a sheet having a width of at least 1.2 m and a thickness of at least 7 mm is used. 9. Способ по п. 1, в котором используют лист, имеющий ширину по меньшей мере 1,2 м и толщину по меньшей мере 8 мм. 9. The method of claim 1, wherein a sheet having a width of at least 1.2 m and a thickness of at least 8 mm is used. 10. Способ по п. 1, в котором порообразователь представляет собой изобутан. 10. The method according to p. 1, in which the blowing agent is isobutane. 11. Способ по п. 1, в котором порообразователь представляет собой смесь органического и неорганического порообразователя. 11. The method according to p. 1, in which the blowing agent is a mixture of organic and inorganic blowing agents. 12. Способ по п. 1, в котором органический порообразователь выбирают из н-бутана, изобутана, пропана и этанола. 12. The method of claim 1, wherein the organic blowing agent is selected from n-butane, isobutane, propane, and ethanol. 13. Способ по п. 11, в котором органический порообразователь выбирают из н-бутана, изобутана, пропана и этанола. 13. The method according to p. 11, in which the organic blowing agent is selected from n-butane, isobutane, propane and ethanol. 14. Способ по п. 11, в котором неорганический порообразователь выбирают из диоксида углерода, аргона, воды и азота. 14. The method of claim 11, wherein the inorganic pore former is selected from carbon dioxide, argon, water, and nitrogen. 15. Способ по п. 1, в котором порообразователь представляет собой неорганический порообразователь, выбранный из диоксида углерода, аргона, воды и азота. 15. The method according to p. 1, in which the blowing agent is an inorganic blowing agent selected from carbon dioxide, argon, water and nitrogen. 16. Способ по п. 1, в котором используют полипропилен, имеющий скорость растекания расплава менее 10 дециграммов в минуту. 16. The method according to p. 1, in which polypropylene is used having a melt spreading rate of less than 10 decigrams per minute. 17. Способ по п. 1, в котором вспенивающуюся композицию подвергают экструзии совместно с невспенивающимся расплавленным полимером в условиях, достаточных для получения листа, содержащего вспененные и невспененные части. 17. The method according to p. 1, in which the expandable composition is subjected to extrusion together with non-expandable molten polymer under conditions sufficient to obtain a sheet containing foamed and non-foamed parts. 18. Способ по п. 1, в котором используют пенопласт, имеющий средний размер ячеек в интервале 0,1-6,0 мм. 18. The method of claim 1, wherein a foam is used having an average cell size in the range of 0.1-6.0 mm. 19. Способ по п. 1, в котором используют пенопласт, имеющий средний размер ячеек в интервале 0,5-6,0 мм. 19. The method according to p. 1, which use a foam having an average cell size in the range of 0.5-6.0 mm 20. Способ по п. 18, в котором используют пенопласт, имеющий средний размер ячеек по меньшей мере 0,75 мм. 20. The method of claim 18, wherein a foam is used having an average mesh size of at least 0.75 mm. 21. Способ по п. 19, в котором используют пенопласт, имеющий средний размер ячеек по меньшей мере 0,1 мм. 21. The method of claim 19, wherein a foam is used having an average mesh size of at least 0.1 mm. 22. Способ по п. 1, в котором по меньшей мере 75% полимера в листе составляет полипропилен, имеющий прочность расплава в интервале от 25 до 60 cN, когда она измерена при 190oС.22. The method according to p. 1, in which at least 75% of the polymer in the sheet is polypropylene having a melt strength in the range from 25 to 60 cN, when it is measured at 190 o C. 23. Способ по п. 1, в котором по меньшей мере 95% полимера в листе составляет полипропилен, имеющий прочность расплава в интервале от 25 до 60 cN, когда она измерена при 190oС.23. The method according to p. 1, in which at least 95% of the polymer in the sheet is polypropylene having a melt strength in the range from 25 to 60 cN, when it is measured at 190 o C. 24. Способ по п. 1, в котором давление способной вспениваться композиции перед экструзией составляет по меньшей мере 3 МПа. 24. The method of claim 1, wherein the pressure of the foamable composition before extrusion is at least 3 MPa. 25. Способ по п. 1, в котором содержание открытых ячеек в пенопласте составляет менее 50%. 25. The method according to p. 1, in which the content of open cells in the foam is less than 50%.
RU2000132718/04A 1998-05-27 1999-04-30 Hot-molded sheet polypropylene foam RU2219198C2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US8694498P 1998-05-27 1998-05-27
US60/086,944 1998-05-27
US8905898P 1998-06-12 1998-06-12
US60/089,058 1998-06-12

Publications (2)

Publication Number Publication Date
RU2000132718A true RU2000132718A (en) 2003-01-27
RU2219198C2 RU2219198C2 (en) 2003-12-20

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RU2000132718/04A RU2219198C2 (en) 1998-05-27 1999-04-30 Hot-molded sheet polypropylene foam

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US (1) US6251319B1 (en)
EP (2) EP1082236A1 (en)
JP (2) JP2002516210A (en)
KR (2) KR20010043812A (en)
CN (2) CN1303337A (en)
AT (1) ATE263203T1 (en)
AU (2) AU3967699A (en)
BR (2) BR9910334A (en)
CA (2) CA2328974A1 (en)
DE (1) DE69916052T2 (en)
ES (1) ES2219016T3 (en)
HU (1) HUP0101966A3 (en)
IL (2) IL139579A0 (en)
NO (1) NO324390B1 (en)
RU (1) RU2219198C2 (en)
TR (1) TR200003492T2 (en)
TW (2) TW482726B (en)
WO (2) WO1999061283A1 (en)

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