GB1458486A - Preparation of dialkyl esters of aromatic diacids from polyesters waste - Google Patents
Preparation of dialkyl esters of aromatic diacids from polyesters wasteInfo
- Publication number
- GB1458486A GB1458486A GB627275A GB627275A GB1458486A GB 1458486 A GB1458486 A GB 1458486A GB 627275 A GB627275 A GB 627275A GB 627275 A GB627275 A GB 627275A GB 1458486 A GB1458486 A GB 1458486A
- Authority
- GB
- United Kingdom
- Prior art keywords
- waste
- preparation
- monohydric alcohol
- polyesters
- dialkyl esters
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/004—Sparger-type elements
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00761—Details of the reactor
- B01J2219/00763—Baffles
- B01J2219/00765—Baffles attached to the reactor wall
- B01J2219/00777—Baffles attached to the reactor wall horizontal
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
1458486 Aromatic diesters E I DU PONT DE NEMOURS & CO 14 Feb 1975 [15 Feb 1974] 6272/75 Heading C2C [Also in Division B1] A continuous process for the preparation of a dialkyl ester of an aromatic diacid from a waste polyester of the aromatic diacid and an aliphatic diol comprises the steps of (I) contacting the polyester waste with an excess of a monohydric alcohol at a pressure substantially equal to that of the partial vapour pressure of the monohydric alcohol and in the presence of an ester exchange catalyst, (2) deactivating the ester exchange catalyst with a sequestering agent at superatmospheric pressure and (3) vapourizing and recycling excess monohydric alcohol.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44290874A | 1974-02-15 | 1974-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1458486A true GB1458486A (en) | 1976-12-15 |
Family
ID=23758647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB627275A Expired GB1458486A (en) | 1974-02-15 | 1975-02-14 | Preparation of dialkyl esters of aromatic diacids from polyesters waste |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS50112330A (en) |
BE (1) | BE825520A (en) |
CA (1) | CA1043947A (en) |
DE (1) | DE2506353A1 (en) |
FR (1) | FR2261254B1 (en) |
GB (1) | GB1458486A (en) |
IT (1) | IT1031761B (en) |
LU (1) | LU71855A1 (en) |
NL (1) | NL7501735A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200458147Y1 (en) * | 2008-11-10 | 2012-01-20 | 김철호 | Belt |
-
1975
- 1975-02-13 JP JP1752475A patent/JPS50112330A/ja active Pending
- 1975-02-14 DE DE19752506353 patent/DE2506353A1/en not_active Withdrawn
- 1975-02-14 NL NL7501735A patent/NL7501735A/en not_active Application Discontinuation
- 1975-02-14 CA CA220,203A patent/CA1043947A/en not_active Expired
- 1975-02-14 LU LU71855A patent/LU71855A1/xx unknown
- 1975-02-14 IT IT2029675A patent/IT1031761B/en active
- 1975-02-14 GB GB627275A patent/GB1458486A/en not_active Expired
- 1975-02-14 FR FR7504604A patent/FR2261254B1/fr not_active Expired
- 1975-02-14 BE BE153345A patent/BE825520A/en unknown
Also Published As
Publication number | Publication date |
---|---|
IT1031761B (en) | 1979-05-10 |
JPS50112330A (en) | 1975-09-03 |
DE2506353A1 (en) | 1975-08-21 |
LU71855A1 (en) | 1975-06-24 |
FR2261254B1 (en) | 1978-12-29 |
FR2261254A1 (en) | 1975-09-12 |
CA1043947A (en) | 1978-12-05 |
NL7501735A (en) | 1975-08-19 |
BE825520A (en) | 1975-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |