ES217472A1 - A PROCEDURE FOR OBTAINING POLYESTERS - Google Patents
A PROCEDURE FOR OBTAINING POLYESTERSInfo
- Publication number
- ES217472A1 ES217472A1 ES0217472A ES217472A ES217472A1 ES 217472 A1 ES217472 A1 ES 217472A1 ES 0217472 A ES0217472 A ES 0217472A ES 217472 A ES217472 A ES 217472A ES 217472 A1 ES217472 A1 ES 217472A1
- Authority
- ES
- Spain
- Prior art keywords
- terephthalate
- bis
- ester
- para
- hydroxyethyl
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Polyalkylene terephthalates are made by heating a substance of formula: <FORM:0760125/IV(a)/1> where n is 2-10, R and R1 are alkyl or aryl radicals and Ar is a para-substituted benzene ring. Preferably the by-products, i.e. glycol di-esters, are removed from the reaction zone by distillation. Polyesterification catalysts (many specified) may be used. In examples, polyethylene terephthalate was made by heating (1) the dibenzoyl ester of bis-(hydroxyethyl)-terephthalate at 305 DEG C.for 5 hours at 0.1 mm. of Hg pressure (2) the diacetyl ester of bis-(beta-hydroxyethyl)-terephthalate at 305 DEG C. for 5.5 hours at 20-40 mm. of Hg. pressure and in presence of antimony oxide.ALSO:An ester of terephthalic acid of formula <FORM:0760125/IV(b)/1> where n is 2-10, R and R1 are alkyl or aryl radicals and Ar is a para-substituted benzene ring, is made by reacting a bis-(beta-hydroxyalkyl) terephthalate with an acid chloride (e.g. benzoyl or acetyl chloride).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2846853A GB760125A (en) | 1953-10-15 | 1953-10-15 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES217472A1 true ES217472A1 (en) | 1955-09-01 |
Family
ID=10276115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0217472A Expired ES217472A1 (en) | 1953-10-15 | 1954-09-18 | A PROCEDURE FOR OBTAINING POLYESTERS |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE532462A (en) |
| ES (1) | ES217472A1 (en) |
| FR (1) | FR1108570A (en) |
| GB (1) | GB760125A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL256567A (en) * | 1959-10-06 |
-
0
- BE BE532462D patent/BE532462A/xx unknown
-
1953
- 1953-10-15 GB GB2846853A patent/GB760125A/en not_active Expired
-
1954
- 1954-09-18 ES ES0217472A patent/ES217472A1/en not_active Expired
- 1954-09-24 FR FR1108570D patent/FR1108570A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE532462A (en) | |
| FR1108570A (en) | 1956-01-16 |
| GB760125A (en) | 1956-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB883312A (en) | Improvements in or relating to the production of linear aromatic polyesters | |
| GB851061A (en) | Preparation of polyesters | |
| GB859645A (en) | Process for preparing lactone adducts and polyesters | |
| ES8106302A1 (en) | Trans-Quinazoline derivatives, processes for their preparation, intermediates and medicaments containing these derivatives. | |
| ES275290A1 (en) | PROCEDURE FOR THE MANUFACTURE OF POLYESTERS FORMING LINEAR FIBERS AND FILMS | |
| GB760125A (en) | Improvements in the manufacture of highly polymeric polymethylene terephthalates | |
| GB1511429A (en) | Ethylene glycol terephthalate production | |
| GB997398A (en) | Phosphorus-containing fibre-forming polyesters | |
| GB744511A (en) | Manufacture of polyesters | |
| GB775030A (en) | Process for the manufacture of polyesters of terephthalic acid | |
| CH325468A (en) | Process for the production of high polymer polyesters of terephthalic acid with polymethylene glycols | |
| US3267126A (en) | Complex spirocyclic esters of boric acid | |
| GB1323183A (en) | Cyclopropane esters and acids thereof | |
| GB1236888A (en) | Process for producing polyethylene terephthalate | |
| US2938049A (en) | 9, 10-dihydro-11, 12-dioxy-9, 10-ethanoanthracene and esters thereof | |
| GB1335606A (en) | Process for the production of acyl isocyanide dichlorides and carboxylic acid chlorides | |
| GB742196A (en) | Improvements in the manufacture of highly polymeric polymethylene terephthalates | |
| GB805534A (en) | Improvements in or relating to catalytic condensation of diglycolesters of dicarboxylic acids | |
| ES228725A1 (en) | Improvements in the manufacture of highly polymeric polymethylene terephthalates | |
| GB508801A (en) | Manufacture of condensation products of sulphonic acid amides | |
| US3092650A (en) | Preparing esters of phosphinic acids | |
| ES404014A1 (en) | PROCEDURE FOR THE PREPARATION OF SUBSTITUTED CARBONYLOXICAR-BOXYL ACIDS. | |
| GB1103047A (en) | Plasticized compositions containing complex hydrocarbon esters | |
| GB1364654A (en) | Production of esters of hydroxyethyl terephthalates | |
| GB906555A (en) | Manufacture of polyalkylene terephthalate |