ES375930A2 - Procedure for the preparation of polyesters. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the preparation of polyesters. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES375930A2 ES375930A2 ES375930A ES375930A ES375930A2 ES 375930 A2 ES375930 A2 ES 375930A2 ES 375930 A ES375930 A ES 375930A ES 375930 A ES375930 A ES 375930A ES 375930 A2 ES375930 A2 ES 375930A2
- Authority
- ES
- Spain
- Prior art keywords
- dicarboxylic acid
- carbon atoms
- molecular weight
- difunctional
- polyesters
- 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
Improvements made to the object of the main patent no. 361,378, filed on December 13, 1968 by PROCEDURE FOR THE PREPARATION OF POLYESTERS, by heating at temperatures between 150 and 250ºC of at least one acid component of the group of low dialkyl esters molecular weight of a difunctional aromatic dicarboxylic acid, containing 1 to 2 benzene rings and 8 to 20 carbon atoms, of the same aromatic dicarboxylic acid, of the low molecular weight dialkyl ester of a difunctional aliphatic dicarboxylic acid, containing 4 to 10 carbon atoms, and of the same aliphatic dicarboxylic acid (a), with at least one difunctional glycol from the group of alkanediols containing 2 to 10 carbon atoms, diethylene glycol, 1,4-bis- (hydroxymethyl) -cyclohexane and 2,2-bis- (4'-β-hydroxyethoxyphenyl) -propane (b) with elimination of low molecular weight alkanol and water, with formation of essentially monomeric diglycolic esters, heating or of said diglycolic ester in the presence of a polycondensation catalyst with separation by distillation of excess glycol and formation of polyester at temperatures between 200 and 350ºC, preferably between 250 and 300ºC, characterized in that said polycondensation catalyst contains titanium metal in the form of powder. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87369A AT286641B (en) | 1969-01-29 | 1969-01-29 | Process for the production of polyesters using a metal powder as a catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES375930A2 true ES375930A2 (en) | 1972-11-01 |
Family
ID=3501777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES375930A Expired ES375930A2 (en) | 1969-01-29 | 1970-01-27 | Procedure for the preparation of polyesters. (Machine-translation by Google Translate, not legally binding) |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT286641B (en) |
| AU (1) | AU1059370A (en) |
| BE (1) | BE745182R (en) |
| BR (1) | BR7016357D0 (en) |
| ES (1) | ES375930A2 (en) |
| GB (1) | GB1289633A (en) |
| NL (1) | NL7000795A (en) |
| ZA (1) | ZA70635B (en) |
-
1969
- 1969-01-29 AT AT87369A patent/AT286641B/en not_active IP Right Cessation
-
1970
- 1970-01-20 NL NL7000795A patent/NL7000795A/xx unknown
- 1970-01-21 GB GB1289633D patent/GB1289633A/en not_active Expired
- 1970-01-22 AU AU10593/70A patent/AU1059370A/en not_active Expired
- 1970-01-27 ES ES375930A patent/ES375930A2/en not_active Expired
- 1970-01-28 BR BR216357/70A patent/BR7016357D0/en unknown
- 1970-01-29 ZA ZA700635A patent/ZA70635B/en unknown
- 1970-01-29 BE BE745182D patent/BE745182R/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ZA70635B (en) | 1971-09-29 |
| BE745182R (en) | 1970-07-01 |
| BR7016357D0 (en) | 1973-02-22 |
| AT286641B (en) | 1970-12-10 |
| GB1289633A (en) | 1972-09-20 |
| AU1059370A (en) | 1971-07-29 |
| NL7000795A (en) | 1970-07-31 |
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