RO87808B1 - Calc poliesteric si procedeu de obtinere a acestuia - Google Patents
Calc poliesteric si procedeu de obtinere a acestuiaInfo
- Publication number
- RO87808B1 RO87808B1 RO112123A RO11212383A RO87808B1 RO 87808 B1 RO87808 B1 RO 87808B1 RO 112123 A RO112123 A RO 112123A RO 11212383 A RO11212383 A RO 11212383A RO 87808 B1 RO87808 B1 RO 87808B1
- Authority
- RO
- Romania
- Prior art keywords
- polyester
- fineness
- degrees
- obtaining
- transversally
- Prior art date
Links
- 229920000728 polyester Polymers 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 5
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 abstract 4
- 229920000642 polymer Polymers 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 229940075614 colloidal silicon dioxide Drugs 0.000 abstract 1
- BTVWZWFKMIUSGS-UHFFFAOYSA-N dimethylethyleneglycol Natural products CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000006068 polycondensation reaction Methods 0.000 abstract 1
- -1 polyethylene terephthalate Polymers 0.000 abstract 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 229920001187 thermosetting polymer Polymers 0.000 abstract 1
Landscapes
- Paper (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Inventia se refera la un calc poliesteric reprezentat de o folie de polietirentereftalat, practicabila pe ambele parti cu o finete de 25...350 miu si un numar de cicluri de utilizare minimum 100000, temperatura de folosire -50 degree C si 150 degree C longitudinal si transversal de maximum 6% în functie de finete, rezistenta la rupere 10...20 kgf/mm2 si o alungire la rupere longitudinal si transversal de 40...170%. Procedeul pentru obtinerea calcului poliesteric consta în introducerea bioxidului de siliciu coloidal în suspensie de etilenglicol, la sfîrsitul reactiei de reesterificare dintre dimetiltereftalat si etilenglicol, în proportie de 0,5...1,2% în greutate fata de dimetiltereftalat la temperatura de 120...130 degree C, dupa care are loc policondensarea la temperatura de 280 degree C, iar banda de polimer extrusa este racita în apa la 30-40 degree C si granulata timp de 60...65 min, granulele fiind apoi uscate cu aer cald în contracurent, timp de 2,5h la temperatura de 180...220 degree C, în functie de finetea calcului ce urmeaza a se realiza, în final polimerul uscat este extrus, etirat longitudinal si transversal, termofixat si racit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO112123A RO87808B1 (ro) | 1983-09-22 | 1983-09-22 | Calc poliesteric si procedeu de obtinere a acestuia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO112123A RO87808B1 (ro) | 1983-09-22 | 1983-09-22 | Calc poliesteric si procedeu de obtinere a acestuia |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO87808A2 RO87808A2 (ro) | 1985-12-30 |
| RO87808B1 true RO87808B1 (ro) | 1985-12-31 |
Family
ID=20113649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO112123A RO87808B1 (ro) | 1983-09-22 | 1983-09-22 | Calc poliesteric si procedeu de obtinere a acestuia |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO87808B1 (ro) |
-
1983
- 1983-09-22 RO RO112123A patent/RO87808B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO87808A2 (ro) | 1985-12-30 |
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