IT1089821B - Recupero di glicoli di alchilene - Google Patents
Recupero di glicoli di alchileneInfo
- Publication number
- IT1089821B IT1089821B IT51223/76A IT5122376A IT1089821B IT 1089821 B IT1089821 B IT 1089821B IT 51223/76 A IT51223/76 A IT 51223/76A IT 5122376 A IT5122376 A IT 5122376A IT 1089821 B IT1089821 B IT 1089821B
- Authority
- IT
- Italy
- Prior art keywords
- alchylene
- glycols
- recovery
- alchylene glycols
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
- C07C29/82—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by azeotropic distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/612,825 US4057471A (en) | 1975-09-12 | 1975-09-12 | Recovery of alkylene glycols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1089821B true IT1089821B (it) | 1985-06-18 |
Family
ID=24454797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT51223/76A IT1089821B (it) | 1975-09-12 | 1976-09-10 | Recupero di glicoli di alchilene |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4057471A (it) |
| JP (1) | JPS5236610A (it) |
| BE (1) | BE846054A (it) |
| DE (1) | DE2641131C2 (it) |
| FR (1) | FR2323669A1 (it) |
| GB (1) | GB1554647A (it) |
| IT (1) | IT1089821B (it) |
| NL (1) | NL169727C (it) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151048A (en) * | 1977-06-06 | 1979-04-24 | Halcon Research And Development Corporation | Recovery of alkylene glycols by azeotropic distillation |
| US4187153A (en) | 1977-11-14 | 1980-02-05 | Halcon Research & Development Corporation | Production of alkylene glycols |
| US4519875A (en) * | 1984-05-09 | 1985-05-28 | The Halcon Sd Group, Inc. | Purification of ethylene glycol derived from ethylene carbonate |
| US4830712A (en) * | 1987-09-29 | 1989-05-16 | Union Carbide Corporation | Process for refining ethylene glycol |
| US4966658A (en) * | 1989-12-27 | 1990-10-30 | Lloyd Berg | Recovery of ethylene glycol from butanediol isomers by azeotropic distillation |
| US4975158A (en) * | 1989-12-27 | 1990-12-04 | Lloyd Bert | Recovery of glycerine from polyols by azeotropic distillation |
| US4935102A (en) * | 1989-12-27 | 1990-06-19 | Lloyd Berg | Separation of 2,3-butanediol from propylene glycol by azeotropic distillation |
| US4980033A (en) * | 1990-09-04 | 1990-12-25 | Lloyd Berg | Recovery of triethylene glycol from triols by azeotropic distillation |
| US5391263A (en) * | 1994-01-26 | 1995-02-21 | E. I. Du Pont De Nemours And Company | Process for the separation of glycols from dimethyl terephthalate |
| ES2124928T3 (es) | 1994-04-18 | 1999-02-16 | Basf Ag | Recuperacion de glicoles de fluidos industriales que contienen glicol usados. |
| CA2539243C (en) * | 2003-09-30 | 2010-04-20 | Arthur F. Clark | Method for separating volatile components by dilutive distillation |
| CN110878007B (zh) * | 2018-09-05 | 2023-04-28 | 长春美禾科技发展有限公司 | 一种非石油基乙二醇的精制方法 |
| CN110963891B (zh) * | 2018-09-29 | 2024-02-23 | 长春美禾科技发展有限公司 | 一种生物基丙二醇的精制方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1142057A (en) * | 1966-11-09 | 1969-02-05 | Bp Chem Int Ltd | Separation of formic acid from mixtures with other acids |
| US3809724A (en) * | 1971-09-08 | 1974-05-07 | Halcon International Inc | Preparation and recovery of alkylene glycols |
-
1975
- 1975-09-12 US US05/612,825 patent/US4057471A/en not_active Expired - Lifetime
-
1976
- 1976-08-27 NL NLAANVRAGE7609540,A patent/NL169727C/xx active
- 1976-09-10 FR FR7627239A patent/FR2323669A1/fr active Granted
- 1976-09-10 BE BE170505A patent/BE846054A/xx unknown
- 1976-09-10 IT IT51223/76A patent/IT1089821B/it active
- 1976-09-13 JP JP51109717A patent/JPS5236610A/ja active Pending
- 1976-09-13 DE DE2641131A patent/DE2641131C2/de not_active Expired
- 1976-09-13 GB GB37894/76A patent/GB1554647A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL169727C (nl) | 1982-08-16 |
| NL7609540A (nl) | 1977-03-15 |
| GB1554647A (en) | 1979-10-24 |
| FR2323669A1 (fr) | 1977-04-08 |
| JPS5236610A (en) | 1977-03-22 |
| DE2641131A1 (de) | 1977-03-24 |
| FR2323669B1 (it) | 1980-03-07 |
| BE846054A (fr) | 1977-03-10 |
| DE2641131C2 (de) | 1982-04-01 |
| US4057471A (en) | 1977-11-08 |
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