ECSP951602A - PROCEDURE FOR THE REPAIR OF POLYESTERS AND COPOLIESTERS - Google Patents
PROCEDURE FOR THE REPAIR OF POLYESTERS AND COPOLIESTERSInfo
- Publication number
- ECSP951602A ECSP951602A ECSP951602A ECSP951602A EC SP951602 A ECSP951602 A EC SP951602A EC SP951602 A ECSP951602 A EC SP951602A EC SP951602 A ECSP951602 A EC SP951602A
- Authority
- EC
- Ecuador
- Prior art keywords
- polycondensation
- precipitate
- polyesters
- titanium dioxide
- dioxide
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 229920000728 polyester Polymers 0.000 title abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 6
- 238000006068 polycondensation reaction Methods 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 3
- 239000002244 precipitate Substances 0.000 abstract 3
- 239000010936 titanium Substances 0.000 abstract 3
- 239000004408 titanium dioxide Substances 0.000 abstract 3
- 239000003054 catalyst Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 150000002148 esters Chemical class 0.000 abstract 2
- 229920002601 oligoester Polymers 0.000 abstract 2
- 229920001634 Copolyester Polymers 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 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
- 238000001556 precipitation Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
Procedimiento para la preparación de poliésteres y copoliésteres mediante policondensación de componentes de partida formadores de poliésteres, en el que en una primera etapa de reacción se preparan ésteres u oligoésteres que se policondensan en una segunda etapa de racción en presencia de catalizadores de titanio, caracterizado porque en la etapa de policondensación para la policondensación de los ésteres u oligoésteres se emplea como catalizador de policondensación un precipitado de dióxido se titanio y/o un coprecipiotado de dióxido de titanio/dióxido de silicio con una composición. Ti 02:Si02 de >90:10 mo1/mo1 y o un coprecipitado de dióxido de titanio/dióxido de zirconio con una composición de Ti 02: Zr 02 de > 95:5 mol/mol, que han sido obtenidos por precipitación hidrolítica de los correspondientes alcoholatos de metales formados a partir de alcoholes monovalentes o polivalentes.Process for the preparation of polyesters and copolyesters by polycondensation of polyester-forming starting components, in which esters or oligoesters are prepared in a first reaction stage which are polycondensed in a second reaction stage in the presence of titanium catalysts, characterized in that In the polycondensation step for polycondensation of the esters or oligoesters, a precipitate of titanium dioxide and / or a co-precipitate of titanium dioxide / silicon dioxide with a composition is used as the polycondensation catalyst. Ti 02: Si02 of> 90:10 mo1 / mo1 and or a co-precipitate of titanium dioxide / zirconium dioxide with a composition of Ti 02: Zr 02 of> 95: 5 mol / mol, which have been obtained by hydrolytic precipitation of the Corresponding metal alcoholates formed from monovalent or polyvalent alcohols.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ECSP951602 ECSP951602A (en) | 1995-12-07 | 1995-12-07 | PROCEDURE FOR THE REPAIR OF POLYESTERS AND COPOLIESTERS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ECSP951602 ECSP951602A (en) | 1995-12-07 | 1995-12-07 | PROCEDURE FOR THE REPAIR OF POLYESTERS AND COPOLIESTERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ECSP951602A true ECSP951602A (en) | 1997-07-28 |
Family
ID=42042244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ECSP951602 ECSP951602A (en) | 1995-12-07 | 1995-12-07 | PROCEDURE FOR THE REPAIR OF POLYESTERS AND COPOLIESTERS |
Country Status (1)
| Country | Link |
|---|---|
| EC (1) | ECSP951602A (en) |
-
1995
- 1995-12-07 EC ECSP951602 patent/ECSP951602A/en unknown
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