GB793111A - Improvements in the manufacture of highly polymeric polymethylene terephthalates - Google Patents
Improvements in the manufacture of highly polymeric polymethylene terephthalatesInfo
- Publication number
- GB793111A GB793111A GB1532755A GB1532755A GB793111A GB 793111 A GB793111 A GB 793111A GB 1532755 A GB1532755 A GB 1532755A GB 1532755 A GB1532755 A GB 1532755A GB 793111 A GB793111 A GB 793111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- terephthalate
- titanate
- glycol
- terephthalic acid
- resulting
- 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
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, 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
In a process for making highly polymeric polymethylene terephthalates by reacting a glycol of formula HO(CH2)nOH (where n is 2-10) with terephthalic acid or an ester-forming derivative thereof, and polycondensing the resulting glycol terephthalate, at least the polycondensation step is effected in presence of an organic titanate, especially an alkyl or aryl titanate. An additional polycondensation catalyst may be used, e.g. antimony oxide, and when starting from a dialkyl terephthalate, an esterinterchange catalyst may be used, e.g. zinc acetate. Part of the terephthalic acid may be replaced by another dicarboxylic acid (e.g. isophthalic acid in the form of dimethyl isophthalate) and a mixture of two glycols of the above series may be used. Titanium dioxide, which acts as a delustrant, may also be present during the polyesterification. In examples: (1)-(9) ester-interchange was effected between dimethyl terephthalate and ethylene glycol in presence of tetramethyl or tetrabutyl titanate and in some examples also in presence of zinc acetate at 149-218 DEG C. and the resulting glycol terephthalate polycondensed at 275 DEG C. and 1 mm. of Hg. pressure; (10) terephthalic acid and ethylene glycol were reacted at 230 DEG C. and 35 lbs./sq. inch and the resulting glycol terephthalate polycondensed at 275 DEG C. and 0.3 mm. of Hg in presence of tetramethyl titanate and titanium dioxide. Subject-matter in Specification 769,220 is disclaimed.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL207417D NL207417A (en) | 1955-05-27 | ||
NL97626D NL97626C (en) | 1955-05-27 | ||
BE548082D BE548082A (en) | 1955-05-27 | ||
CA599386A CA599386A (en) | 1955-05-27 | Highly polymeric polymethylene terephthalates | |
IT554213D IT554213A (en) | 1955-05-27 | ||
GB1532755A GB793111A (en) | 1955-05-27 | 1955-05-27 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
DE19561420515 DE1420515A1 (en) | 1955-05-27 | 1956-05-23 | Process for the production of polyesters |
ES0228725A ES228725A1 (en) | 1955-05-27 | 1956-05-24 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
FR1153698D FR1153698A (en) | 1955-05-27 | 1956-05-28 | Manufacture of polyesters |
CH3368856A CH364628A (en) | 1955-05-27 | 1956-05-28 | Process for the production of high polymer polyesters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1532755A GB793111A (en) | 1955-05-27 | 1955-05-27 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB793111A true GB793111A (en) | 1958-04-09 |
Family
ID=10057134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1532755A Expired GB793111A (en) | 1955-05-27 | 1955-05-27 | Improvements in the manufacture of highly polymeric polymethylene terephthalates |
Country Status (9)
Country | Link |
---|---|
BE (1) | BE548082A (en) |
CA (1) | CA599386A (en) |
CH (1) | CH364628A (en) |
DE (1) | DE1420515A1 (en) |
ES (1) | ES228725A1 (en) |
FR (1) | FR1153698A (en) |
GB (1) | GB793111A (en) |
IT (1) | IT554213A (en) |
NL (2) | NL97626C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0047608A1 (en) * | 1980-09-08 | 1982-03-17 | Rohm And Haas Company | Poly(ethylene terephthalate) and process for preparing it |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3079368A (en) * | 1959-11-23 | 1963-02-26 | American Cyanamid Co | Process for the preparation of high molecular weight polymerizable orthophthalate polyesters |
BE794423A (en) * | 1972-01-24 | 1973-07-23 | Rhone Poulenc Textile | NEW PROCESS FOR MANUFACTURING POLYESTERS AND PRODUCTS THUS OBTAINED |
US4365054A (en) * | 1975-08-11 | 1982-12-21 | The Firestone Tire & Rubber Company | Ethylene glycol terephthalate production |
US4356299A (en) * | 1982-02-04 | 1982-10-26 | Rohm And Haas Company | Catalyst system for a polyethylene terephthalate polycondensation |
-
0
- NL NL207417D patent/NL207417A/xx unknown
- CA CA599386A patent/CA599386A/en not_active Expired
- BE BE548082D patent/BE548082A/xx unknown
- NL NL97626D patent/NL97626C/xx active
- IT IT554213D patent/IT554213A/it unknown
-
1955
- 1955-05-27 GB GB1532755A patent/GB793111A/en not_active Expired
-
1956
- 1956-05-23 DE DE19561420515 patent/DE1420515A1/en active Pending
- 1956-05-24 ES ES0228725A patent/ES228725A1/en not_active Expired
- 1956-05-28 FR FR1153698D patent/FR1153698A/en not_active Expired
- 1956-05-28 CH CH3368856A patent/CH364628A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0047608A1 (en) * | 1980-09-08 | 1982-03-17 | Rohm And Haas Company | Poly(ethylene terephthalate) and process for preparing it |
Also Published As
Publication number | Publication date |
---|---|
IT554213A (en) | |
NL207417A (en) | |
NL97626C (en) | |
ES228725A1 (en) | 1956-08-16 |
FR1153698A (en) | 1958-03-20 |
CA599386A (en) | 1960-06-07 |
DE1420515A1 (en) | 1969-03-27 |
BE548082A (en) | |
CH364628A (en) | 1962-09-30 |
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