ECSP951358A - PROCEDURE FOR THE PREPARATION OF POLYESTERS AND COPOLIESTERS - Google Patents
PROCEDURE FOR THE PREPARATION OF POLYESTERS AND COPOLIESTERSInfo
- Publication number
- ECSP951358A ECSP951358A ECSP951358A ECSP951358A EC SP951358 A ECSP951358 A EC SP951358A EC SP951358 A ECSP951358 A EC SP951358A EC SP951358 A ECSP951358 A EC SP951358A
- Authority
- EC
- Ecuador
- Prior art keywords
- mol
- copoliesters
- polyesters
- procedure
- preparation
- Prior art date
Links
- 229920000728 polyester Polymers 0.000 title 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 3
- 239000002244 precipitate Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 239000004408 titanium dioxide Substances 0.000 abstract 2
- 229910017895 Sb2 O3 Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 229920002601 oligoester Polymers 0.000 abstract 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
Se proponen, como catalizadores de policondensación, coprecipitados de dióxido de titanio/dióxido de silicio con una composición de TiO2:SiO2 = 90:10 hasta 20:80 mol/mol, y/o coprecipitados de dióxido de titanio/dióxido de zirconio con una composición de TiO2:ZrO2 = 95:5 hasta 70:30 mol/mol. Estos muestran una actividad catalítica más alta que el Sb2 O3, por lo que la cantidad añadida preferida es de solamente 10 a 100 ppm, referida a los ésteres u oligoésteres a policondensar.Co-precipitates of titanium dioxide / silicon dioxide with a composition of TiO2: SiO2 = 90:10 to 20:80 mol / mol, and / or co-precipitates of titanium dioxide / zirconium dioxide with a TiO2 composition: ZrO2 = 95: 5 up to 70:30 mol / mol. These show a higher catalytic activity than Sb2 O3, so the preferred added amount is only 10 to 100 ppm, based on the esters or oligoesters to be polycondensed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ECSP951358 ECSP951358A (en) | 1995-01-03 | 1995-01-03 | PROCEDURE FOR THE PREPARATION OF POLYESTERS AND COPOLIESTERS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ECSP951358 ECSP951358A (en) | 1995-01-03 | 1995-01-03 | PROCEDURE FOR THE PREPARATION OF POLYESTERS AND COPOLIESTERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ECSP951358A true ECSP951358A (en) | 1996-02-28 |
Family
ID=42042002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ECSP951358 ECSP951358A (en) | 1995-01-03 | 1995-01-03 | PROCEDURE FOR THE PREPARATION OF POLYESTERS AND COPOLIESTERS |
Country Status (1)
| Country | Link |
|---|---|
| EC (1) | ECSP951358A (en) |
-
1995
- 1995-01-03 EC ECSP951358 patent/ECSP951358A/en unknown
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