GB990611A - Process for the continuous production of alkali metal terephthalates - Google Patents
Process for the continuous production of alkali metal terephthalatesInfo
- Publication number
- GB990611A GB990611A GB3591763A GB3591763A GB990611A GB 990611 A GB990611 A GB 990611A GB 3591763 A GB3591763 A GB 3591763A GB 3591763 A GB3591763 A GB 3591763A GB 990611 A GB990611 A GB 990611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- continuous production
- minutes
- air lock
- terephthalates
- 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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
- C07C63/14—Monocyclic dicarboxylic acids
- C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
- C07C63/26—1,4 - Benzenedicarboxylic acid
- C07C63/28—Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/416—Henkel reaction and related reactions, i.e. rearrangement of carboxylate salt groups linked to six-membered aromatic rings, in the absence or in the presence of CO or CO2, (e.g. preparation of terepholates from benzoates); no additional classification for the subsequent hydrolysis of the salt groups has to be given
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Alkali metal terephthalates are produced by passing a mixture heated to 200-320 DEG C. of an alkali metal benzene carboxylate and a known catalyst through a reaction zone whose free space is practically completely filled with reaction mixture, heating the latter to 340-550 DEG C., continually moving it by means of shearing forces and discharging it, if necessary through an air lock, after a residence period of 5-60 minutes. The product may be thereafter kept in a retention vessel for 10 minutes-5 hours at 380-450 DEG C. and then discharged e.g. through an air lock.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB68880A DE1191800B (en) | 1962-09-18 | 1962-09-18 | Process for the continuous production of alkali terephthalates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB990611A true GB990611A (en) | 1965-04-28 |
Family
ID=6976072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3591763A Expired GB990611A (en) | 1962-09-18 | 1963-09-12 | Process for the continuous production of alkali metal terephthalates |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT245559B (en) |
CH (1) | CH421074A (en) |
DE (1) | DE1191800B (en) |
GB (1) | GB990611A (en) |
NL (1) | NL297997A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4271316A (en) * | 1976-12-09 | 1981-06-02 | Rhone-Poulenc Industries | Process for the continuous rearrangement of alkali metal salts of aromatic carboxylic acids |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE944727C (en) * | 1945-08-20 | 1956-06-21 | Heinz List Dipl Ing | Mixing and kneading machine |
DE940109C (en) * | 1953-07-28 | 1956-03-08 | Bayer Ag | Mixing and kneading device |
-
0
- NL NL297997D patent/NL297997A/xx unknown
-
1962
- 1962-09-18 DE DEB68880A patent/DE1191800B/en active Pending
-
1963
- 1963-09-09 CH CH1110963A patent/CH421074A/en unknown
- 1963-09-12 GB GB3591763A patent/GB990611A/en not_active Expired
- 1963-09-18 AT AT749163A patent/AT245559B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4271316A (en) * | 1976-12-09 | 1981-06-02 | Rhone-Poulenc Industries | Process for the continuous rearrangement of alkali metal salts of aromatic carboxylic acids |
Also Published As
Publication number | Publication date |
---|---|
DE1191800B (en) | 1965-04-29 |
AT245559B (en) | 1966-03-10 |
NL297997A (en) | |
CH421074A (en) | 1966-09-30 |
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