GB902021A - New copolyesters - Google Patents
New copolyestersInfo
- Publication number
- GB902021A GB902021A GB2669259A GB2669259A GB902021A GB 902021 A GB902021 A GB 902021A GB 2669259 A GB2669259 A GB 2669259A GB 2669259 A GB2669259 A GB 2669259A GB 902021 A GB902021 A GB 902021A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copolyester
- phenol
- bis
- residues
- acid
- 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
- C08G63/02—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
- C08G63/19—Hydroxy compounds containing aromatic rings
- C08G63/193—Hydroxy compounds containing aromatic rings containing two or more aromatic rings
- C08G63/195—Bisphenol A
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
New copolyesters, suitable for the manufacture of films and mouldings, contain the residues of (1) bis-phenol A, (2) orthophthalic acid and (3) isophthalic and/or terephthalic acids; the number of orthophthalate residues forming from 15 to 85% of the total number of phthalate residues present in the copolyester. The copolyester may be made by reacting (a) An aqueous solution p of a di-alkali metal salt of bis-phenol A with the acid chlorides or bromides in an organic solvent which may dissolve the copolyester, possibly in the presence of a quarternary ammonium compound as catalyst and an emulsifying agent; (b) Bis-phenol A with the dimethyl or diethyl esters of the acids in the presence of a polymethylene glycol containing 2-10 carbon atoms and an esterinterchange catalyst; or (3) Bis-phenol A and the diphenyl esters of the acid. The molecular weight of the copolyester may be increased by (i) Heating it in powder form just below its sintering temperature or heating it above its melting point in vacuo or (ii) Reacting it with a difunctional isocyanate or isothiocyanate. Ancillary agents such as plasticizers, stabilizers, fillers, dyes and pigments may be added to the copolyester. Before use the polyesters are carefully dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2669259A GB902021A (en) | 1959-08-05 | 1959-08-05 | New copolyesters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2669259A GB902021A (en) | 1959-08-05 | 1959-08-05 | New copolyesters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB902021A true GB902021A (en) | 1962-07-25 |
Family
ID=10247690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2669259A Expired GB902021A (en) | 1959-08-05 | 1959-08-05 | New copolyesters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB902021A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3399170A (en) * | 1962-11-12 | 1968-08-27 | Chemische Werke Witten Gmbh | Process for the preparation of linear thermoplastic polyesters with freezing temperatures above 100u deg. c. |
| US3449295A (en) * | 1960-04-21 | 1969-06-10 | Gevaert Photo Prod Nv | High molecular weight linear copolyesters of bisphenols and mixtures of ortho-phthalic and iso- and/or terephthalic acids |
-
1959
- 1959-08-05 GB GB2669259A patent/GB902021A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3449295A (en) * | 1960-04-21 | 1969-06-10 | Gevaert Photo Prod Nv | High molecular weight linear copolyesters of bisphenols and mixtures of ortho-phthalic and iso- and/or terephthalic acids |
| US3399170A (en) * | 1962-11-12 | 1968-08-27 | Chemische Werke Witten Gmbh | Process for the preparation of linear thermoplastic polyesters with freezing temperatures above 100u deg. c. |
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