FR2021546A1 - Catalyst system - for the prodn. of colorless polyesters having a low residual glycol content - Google Patents
Catalyst system - for the prodn. of colorless polyesters having a low residual glycol contentInfo
- Publication number
- FR2021546A1 FR2021546A1 FR6936182A FR6936182A FR2021546A1 FR 2021546 A1 FR2021546 A1 FR 2021546A1 FR 6936182 A FR6936182 A FR 6936182A FR 6936182 A FR6936182 A FR 6936182A FR 2021546 A1 FR2021546 A1 FR 2021546A1
- Authority
- FR
- France
- Prior art keywords
- geo2
- compounds
- polyesters
- catalysts
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
- C08G63/86—Germanium, antimony, or compounds thereof
- C08G63/863—Germanium or compounds thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
High molecular weight polyesters are prepared by condensing the bis-glycol esters of organic dicarboxilic acids and 2-10C glycols (or their low molecular weight prepolymers) in the presence of nitrogen-containing germanium compounds which have been prepared by dissolving germanium oxide in a mixture of water and a volatile C1-10 aliphatic or 3-8C cycloaliphatic monoamine. In particular 0.005 to 0.1% by weight of the Ge compound (calculated as GeO2) is used. Specifically the polyesters are based on terephthalic acid and 2-8C glycols. The polymers produced are colourless. Other metal salt catalyst systems discolour the polymer e.g. Sb compounds-light grey, Ti compounds-light yellow. Zn salt catalysts lower the heat stability of the polymer melt and promote degradation. Ge catalysts are known, e.g. Ge or GeO2 (US Patent 2,578,660), amorphous GeO2 (Belg. Patent 659,341) and Ge alkoxides (Belg. Patent 600,111), but reaction conditions are heterogeneous. The homogeneous conditions obtained with the new catalysts reduces the residual glycol content in the final polymer and the polymers have a higher melting point and an improved light stability. Uses are for fibres, films and moulded products.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1043668A AT282966B (en) | 1968-10-25 | 1968-10-25 | Process for the production of high molecular weight linear polyesters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2021546A1 true FR2021546A1 (en) | 1970-07-24 |
Family
ID=3622328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR6936182A Withdrawn FR2021546A1 (en) | 1968-10-25 | 1969-10-22 | Catalyst system - for the prodn. of colorless polyesters having a low residual glycol content |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT282966B (en) |
| BE (1) | BE740745A (en) |
| DE (1) | DE1939923A1 (en) |
| FR (1) | FR2021546A1 (en) |
| NL (1) | NL6916013A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010011465A1 (en) | 2010-03-15 | 2011-09-15 | Fresenius Medical Care Deutschland Gmbh | System for performing a blood treatment |
| DE102010022201A1 (en) | 2010-05-20 | 2011-11-24 | Fresenius Medical Care Deutschland Gmbh | Medical treatment arrangement |
-
1968
- 1968-10-25 AT AT1043668A patent/AT282966B/en not_active IP Right Cessation
-
1969
- 1969-08-06 DE DE19691939923 patent/DE1939923A1/en active Pending
- 1969-10-22 FR FR6936182A patent/FR2021546A1/en not_active Withdrawn
- 1969-10-23 NL NL6916013A patent/NL6916013A/xx unknown
- 1969-10-24 BE BE740745D patent/BE740745A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1939923A1 (en) | 1970-05-06 |
| AT282966B (en) | 1970-07-27 |
| BE740745A (en) | 1970-04-24 |
| NL6916013A (en) | 1970-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Withdrawal of published application |