GB727729A - Process for the production of high molecular weight linear polyesters from diol esters of terephthalic acid - Google Patents
Process for the production of high molecular weight linear polyesters from diol esters of terephthalic acidInfo
- Publication number
- GB727729A GB727729A GB2782/52A GB278252A GB727729A GB 727729 A GB727729 A GB 727729A GB 2782/52 A GB2782/52 A GB 2782/52A GB 278252 A GB278252 A GB 278252A GB 727729 A GB727729 A GB 727729A
- Authority
- GB
- United Kingdom
- Prior art keywords
- terephthalic acid
- molecular weight
- high molecular
- weight linear
- linear polyesters
- 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.)
- Expired
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
- C08G63/84—Boron, aluminium, gallium, indium, thallium, rare-earth metals, 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
Hydroxyl-terminated esters from terephthalic acid and ethylene glycol are converted to high molecular weight linear polyesters by condensation in the presence, as catalyst, of boron trioxide. The chain length of the polymers may be limited by the addition for example of a mono-carboxylic acid. In the example terephthalic acid diglycol ester is fused with added boron trioxide and propyl benzoate and heated in an atmosphere of nitrogen until splitting off of glycol ceases. The pressure is then reduced and heating continued and maintained for half-an hour after reaching a temperature of 270-280 DEG C. The molten condensate is forced from the vessel by nitrogen pressure and cooled in water. The polymer is shredded, washed, dried and spun into threads.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE727729X | 1951-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB727729A true GB727729A (en) | 1955-04-06 |
Family
ID=6635520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2782/52A Expired GB727729A (en) | 1951-02-03 | 1952-02-01 | Process for the production of high molecular weight linear polyesters from diol esters of terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB727729A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3113125A (en) * | 1959-12-21 | 1963-12-03 | Callery Chemical Co | Preparation of synthetic polyesters using borane catalysts |
-
1952
- 1952-02-01 GB GB2782/52A patent/GB727729A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3113125A (en) * | 1959-12-21 | 1963-12-03 | Callery Chemical Co | Preparation of synthetic polyesters using borane catalysts |
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