GB645032A - Solutions of aromatic polyesters - Google Patents
Solutions of aromatic polyestersInfo
- Publication number
- GB645032A GB645032A GB423248A GB423248A GB645032A GB 645032 A GB645032 A GB 645032A GB 423248 A GB423248 A GB 423248A GB 423248 A GB423248 A GB 423248A GB 645032 A GB645032 A GB 645032A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solutions
- ring structure
- acids
- propiolactone
- alkyl
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
- C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
- C08J3/095—Oxygen containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Solutions of highly polymeric linear polyesters (including interpolyesters) of the kind formed by condensation of aromatic dicarboxylic acids, e.g. terephthalic acid, and glycols are obtained by dissolving the polyester in an organic compound having 4 ot 5 atoms linked together to form a single ring structure, the components linked together in the said ring structure being selected from <FORM:0645032/IV (a)/1> and -CH=CH- and being further selected so that the components present in the ring structure include at least one -O- and at least one <FORM:0645032/IV (a)/2> which preferably form the group <FORM:0645032/IV (a)/3> Clear solutions result at elevated temperature, and these separate into two layers on cooling, e.g. to 160-130 DEG C. The solutions p are used to form film or filaments, and with smaller proportions of solvent, shaped masses. Solvents specified are b -propiolactone, g -butyrolactone, succinic anhydride, maleic anhydride, ethylene carbonate, and their isomers. In examples highly polymeric ethylene terephthalate is dissolved by heating in (1) b -propiolactone at 150 DEG C.; (2) maleic anhydride at 180 DEG C.; (3) succinic anhydride at 180-190 DEG C. and (5) ethylene carbonate at 180-190 DEG C. Polyesters are also mentioned prepared from acids of the general formula <FORM:0645032/IV (a)/4> <FORM:0645032/IV (a)/5> ; <FORM:0645032/IV (a)/6> ; <FORM:0645032/IV (a)/7> or from 1 : 5, 2 : 6, or 2 : 7-naphthalen dicarboxylic acids, or the alkyl, cyclo-alkyl or aryl esters, acid halides, or ammonium or amine salts of such acids, and from ethylene glycol, tri-, tetra-, penta-, or hexa-methylene glycol or their esters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB423248A GB645032A (en) | 1948-02-13 | 1948-02-13 | Solutions of aromatic polyesters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB423248A GB645032A (en) | 1948-02-13 | 1948-02-13 | Solutions of aromatic polyesters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645032A true GB645032A (en) | 1950-10-25 |
Family
ID=9773219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB423248A Expired GB645032A (en) | 1948-02-13 | 1948-02-13 | Solutions of aromatic polyesters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB645032A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2878201A (en) * | 1956-01-09 | 1959-03-17 | Chemstrand Corp | Polyester composition and process of making same |
| US2950949A (en) * | 1956-04-28 | 1960-08-30 | Hoechst Ag | Process for dyeing and printing shaped structures of hydrophobic organic high polymers containing ester groups |
| US3079293A (en) * | 1959-05-04 | 1963-02-26 | Ncr Co | Process of joining polyethylene terephthalate films |
| US3401140A (en) * | 1967-03-08 | 1968-09-10 | Du Pont | Methylene chloride solution of polyethylene terephthalate |
-
1948
- 1948-02-13 GB GB423248A patent/GB645032A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2878201A (en) * | 1956-01-09 | 1959-03-17 | Chemstrand Corp | Polyester composition and process of making same |
| US2950949A (en) * | 1956-04-28 | 1960-08-30 | Hoechst Ag | Process for dyeing and printing shaped structures of hydrophobic organic high polymers containing ester groups |
| US3079293A (en) * | 1959-05-04 | 1963-02-26 | Ncr Co | Process of joining polyethylene terephthalate films |
| US3401140A (en) * | 1967-03-08 | 1968-09-10 | Du Pont | Methylene chloride solution of polyethylene terephthalate |
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