GB740381A - Improvements in the manufacture of highly polymeric polymethylene terephthalates - Google Patents

Improvements in the manufacture of highly polymeric polymethylene terephthalates

Info

Publication number
GB740381A
GB740381A GB5515/53A GB551553A GB740381A GB 740381 A GB740381 A GB 740381A GB 5515/53 A GB5515/53 A GB 5515/53A GB 551553 A GB551553 A GB 551553A GB 740381 A GB740381 A GB 740381A
Authority
GB
United Kingdom
Prior art keywords
antimony
acetate
added
zinc
zinc acetate
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
Application number
GB5515/53A
Inventor
Norman Fletcher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of GB740381A publication Critical patent/GB740381A/en
Expired legal-status Critical Current

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
    • C08G63/83—Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
    • B28B7/183—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article for building blocks or similar block-shaped objects
    • 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
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/183—Terephthalic acids
    • 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
    • C08G63/866—Antimony or compounds thereof

Abstract

Highly polymeric polymethylene terephthalates are made by polycondensing a bis-(hydroxyalkyl) terephthalate in presence of a catalyst which is a compound of antimony soluble in the reaction mixture. When the first step in the process is an ester-interchange reaction, an ester-interchange catalyst may be used in addition to the antimony compound. In examples: (1)-(2) Bis - hydroxyethyl terephthalate is melted under deoxidized nitrogen and antimony trifluoride or antimony acetate is added with agitation. Glycol distills off. At 245 DEG C., pressure is reduced at such a rate that it reaches 1 mm. at 270-275 DEG C. Reaction is then continued at 275-285 DEG C. at less than 1 mm. pressure. (3) Dimethyl terephthalate and ethylene glycol are melted under deoxidized nitrogen and calcium acetate and antimony trichloride dissolved in ethylene glycol added. After esterinterchange at atmospheric temperature, titanium dioxide is added and polycondensation effected as in example (1). (4)-(10) and (13)-(17) As in example (3) but using the following catalysts: (4) calcium acetate and antimony trichloride; (5)-(6) zinc acetate and potassium pyroantimonate; (7) zinc acetate and antimony trifluoride, (8) zinc acetate and antimony acetate; (9) zinc antimonate; (10) zinc acetate and antimony sodium fluoride; (13)-(14) calcium acetate and antimony trioxide; (15) zinc acetate and antimony trioxide; (16) manganous acetate and antimony trioxide; (17) calcium acetate and antimony trioxide. In examples (5)-(10) and (16) no titanium dioxide was added.
GB5515/53A 1953-02-27 1953-02-27 Improvements in the manufacture of highly polymeric polymethylene terephthalates Expired GB740381A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB325468X 1953-02-27
GB100254X 1954-02-10

Publications (1)

Publication Number Publication Date
GB740381A true GB740381A (en) 1955-11-09

Family

ID=26247180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5515/53A Expired GB740381A (en) 1953-02-27 1953-02-27 Improvements in the manufacture of highly polymeric polymethylene terephthalates

Country Status (6)

Country Link
BE (2) BE526819A (en)
CH (1) CH325468A (en)
DE (1) DE1023885B (en)
FR (1) FR68369E (en)
GB (1) GB740381A (en)
NL (5) NL97390C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360500A (en) * 1964-05-21 1967-12-26 Firestone Tire & Rubber Co Process for preparing high molecular weight polyesters
US3438944A (en) * 1966-11-07 1969-04-15 Fmc Corp Antimony oxalate as a polycondensation catalyst
US3624043A (en) * 1967-12-23 1971-11-30 Snia Viscosa Method for the preparation and use of a catalyst for the production of polyesters, more particularly high molecular weight linear polyesters and catalyst thus obtained
CN104826603A (en) * 2015-05-10 2015-08-12 江苏爱特恩东台新材料科技有限公司 Preparation method of terephthalate gas adsorbent

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130433B (en) * 1955-07-21 1962-05-30 Ici Ltd Process for the preparation of terephthalic acid glycol esters which are well suited for polycondensation
US3073801A (en) * 1958-06-13 1963-01-15 Glanzstoff Ag Process for preparing polyethylene terephthalate
NL244130A (en) * 1958-10-08

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360500A (en) * 1964-05-21 1967-12-26 Firestone Tire & Rubber Co Process for preparing high molecular weight polyesters
US3438944A (en) * 1966-11-07 1969-04-15 Fmc Corp Antimony oxalate as a polycondensation catalyst
US3624043A (en) * 1967-12-23 1971-11-30 Snia Viscosa Method for the preparation and use of a catalyst for the production of polyesters, more particularly high molecular weight linear polyesters and catalyst thus obtained
CN104826603A (en) * 2015-05-10 2015-08-12 江苏爱特恩东台新材料科技有限公司 Preparation method of terephthalate gas adsorbent

Also Published As

Publication number Publication date
NL97177C (en)
BE526819A (en)
FR68369E (en) 1958-04-29
NL97390C (en)
DE1023885B (en) 1958-02-06
CH325468A (en) 1957-11-15
BE543309A (en)
NL225835A (en)
NL225834A (en)
NL98288C (en)

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