GB760125A - Improvements in the manufacture of highly polymeric polymethylene terephthalates - Google Patents
Improvements in the manufacture of highly polymeric polymethylene terephthalatesInfo
- Publication number
- GB760125A GB760125A GB2846853A GB2846853A GB760125A GB 760125 A GB760125 A GB 760125A GB 2846853 A GB2846853 A GB 2846853A GB 2846853 A GB2846853 A GB 2846853A GB 760125 A GB760125 A GB 760125A
- Authority
- GB
- United Kingdom
- Prior art keywords
- terephthalate
- bis
- ester
- manufacture
- para
- 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).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE532462D BE532462A (en) | 1953-10-15 | ||
GB2846853A GB760125A (en) | 1953-10-15 | 1953-10-15 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
ES0217472A ES217472A1 (en) | 1953-10-15 | 1954-09-18 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
FR1108570D FR1108570A (en) | 1953-10-15 | 1954-09-24 | Manufacture of polyesters |
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 |
---|---|
GB760125A true GB760125A (en) | 1956-10-31 |
Family
ID=10276115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2846853A Expired GB760125A (en) | 1953-10-15 | 1953-10-15 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE532462A (en) |
ES (1) | ES217472A1 (en) |
FR (1) | FR1108570A (en) |
GB (1) | GB760125A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3110693A (en) * | 1959-10-06 | 1963-11-12 | Ici Ltd | Manufacture of terephthalate polyesters using a manganese glycoloxide catalyst |
-
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
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3110693A (en) * | 1959-10-06 | 1963-11-12 | Ici Ltd | Manufacture of terephthalate polyesters using a manganese glycoloxide catalyst |
Also Published As
Publication number | Publication date |
---|---|
BE532462A (en) | |
ES217472A1 (en) | 1955-09-01 |
FR1108570A (en) | 1956-01-16 |
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