GB1296242A - - Google Patents
Info
- Publication number
- GB1296242A GB1296242A GB1296242DA GB1296242A GB 1296242 A GB1296242 A GB 1296242A GB 1296242D A GB1296242D A GB 1296242DA GB 1296242 A GB1296242 A GB 1296242A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glycol
- esterification
- pressure
- polyester
- polymerizer
- 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
- C08G63/785—Preparation processes characterised by the apparatus used
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
1296242 Linear polyesters FIBER INDUSSTRIES Inc 25 Feb 1970 [26 Feb 1969 (2)] 9051/70 Heading C3R [Also in Divisions B1 and C2] Linear polyesters are prepared by (A) direct esterification of a glycol, e.g. ethylene glycol with a dicarboxylic acid, e.g. terephthalic acid in a molar ratio of 1À01 to 2À5 at 197-300‹ C. under a partial pressure above that of the partial pressure of the glycol at the reaction temperature until esterification is at least 90% complete (B), reducing the pressure and further esterifying at 197-300‹ C. until esterification is at least 95% complete and (C) polycondensing the resultant polyester to give a product having an intrinsic viscosity of at least 0À5, the process being carried out continuously with the vapours from the first esterification step recycled to the initial reactants. The dicarboxylic acid may be in particulate form and introduced into step A as a pumpable paste formed with the glycol. The polymerization is conducted (A) in a " low " polymerizer consisting of a plurality of chambers with connecting pipes from the vapour space of one to below the liquid level of the next, and (B) in a "high" polymerizer consisting of a horizontal tube fitted with a rotatable shaft carrying foraminous members such that the polyester is lifted in films and exposed to a subatmospheric pressure. The polyester product is extracted by a screw with a converging section such that the pressure is increased thus removing the volatile materials therein.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80246069A | 1969-02-26 | 1969-02-26 | |
US80245969A | 1969-02-26 | 1969-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1296242A true GB1296242A (en) | 1972-11-15 |
Family
ID=27122457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1296242D Expired GB1296242A (en) | 1969-02-26 | 1970-02-25 |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE746408A (en) |
DE (1) | DE2008383A1 (en) |
FR (1) | FR2033396B1 (en) |
GB (1) | GB1296242A (en) |
NL (1) | NL7002071A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6649263B2 (en) | 2001-11-16 | 2003-11-18 | Honeywell International Inc. | Polyester resin and industrial yarn process |
CN114108128A (en) * | 2021-12-27 | 2022-03-01 | 江苏恒科新材料有限公司 | High-density differential polyester fiber and preparation method thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT516968B1 (en) * | 2015-03-23 | 2018-01-15 | Next Generation Recyclingmaschinen Gmbh | Plant and method for treating a plastic melt |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1351484A (en) * | 1962-12-06 | 1964-02-07 | Zimmer Verfahrenstechnik | Installation intended for the execution of slow chemical reactions in liquid phase, in particular polycondensations |
CH465875A (en) * | 1966-09-16 | 1968-11-30 | Inventa Ag | Process for the continuous production of polyesters |
-
1970
- 1970-02-13 NL NL7002071A patent/NL7002071A/xx unknown
- 1970-02-24 DE DE19702008383 patent/DE2008383A1/en active Pending
- 1970-02-24 BE BE746408D patent/BE746408A/en unknown
- 1970-02-25 GB GB1296242D patent/GB1296242A/en not_active Expired
- 1970-02-25 FR FR7006749A patent/FR2033396B1/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6649263B2 (en) | 2001-11-16 | 2003-11-18 | Honeywell International Inc. | Polyester resin and industrial yarn process |
CN114108128A (en) * | 2021-12-27 | 2022-03-01 | 江苏恒科新材料有限公司 | High-density differential polyester fiber and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
FR2033396A1 (en) | 1970-12-04 |
DE2008383A1 (en) | 1970-10-01 |
FR2033396B1 (en) | 1974-02-01 |
BE746408A (en) | 1970-08-24 |
NL7002071A (en) | 1970-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |