SG45476A1 - Process for crystallizing chroman-I from an impure mixture - Google Patents
Process for crystallizing chroman-I from an impure mixtureInfo
- Publication number
- SG45476A1 SG45476A1 SG1996009869A SG1996009869A SG45476A1 SG 45476 A1 SG45476 A1 SG 45476A1 SG 1996009869 A SG1996009869 A SG 1996009869A SG 1996009869 A SG1996009869 A SG 1996009869A SG 45476 A1 SG45476 A1 SG 45476A1
- Authority
- SG
- Singapore
- Prior art keywords
- chroman
- crystallizing
- impure mixture
- impure
- mixture
- Prior art date
Links
- KXYDGGNWZUHESZ-UHFFFAOYSA-N 4-(2,2,4-trimethyl-3h-chromen-4-yl)phenol Chemical compound C12=CC=CC=C2OC(C)(C)CC1(C)C1=CC=C(O)C=C1 KXYDGGNWZUHESZ-UHFFFAOYSA-N 0.000 title 1
- 239000000203 mixture Substances 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Pyrane Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/509,890 US5773633A (en) | 1995-08-01 | 1995-08-01 | Process for crystallizing chroman-I from an impure mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG45476A1 true SG45476A1 (en) | 1998-01-16 |
Family
ID=24028522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG1996009869A SG45476A1 (en) | 1995-08-01 | 1996-05-23 | Process for crystallizing chroman-I from an impure mixture |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5773633A (ja) |
| EP (1) | EP0757047B1 (ja) |
| JP (1) | JPH09118675A (ja) |
| CN (1) | CN1147513A (ja) |
| DE (1) | DE69600865T2 (ja) |
| ES (1) | ES2124066T3 (ja) |
| SG (1) | SG45476A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112675568B (zh) * | 2019-10-18 | 2022-04-05 | 中国石油化工股份有限公司 | 分离提纯装置和分离提纯方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2845464A (en) * | 1954-11-15 | 1958-07-29 | Shell Dev | Purification of bis (hydroxyaryl)-substituted compounds |
| US3073868A (en) * | 1959-02-05 | 1963-01-15 | Hooker Chemical Corp | Production and purification of diphenylolalkanes |
| US3207795A (en) * | 1962-03-02 | 1965-09-21 | Hooker Chemical Corp | Production and purification of diphenylolalkanes |
| US3673262A (en) * | 1968-12-20 | 1972-06-27 | Hooker Chemical Corp | Crystallization of diphenylol alkanes |
| US3825562A (en) * | 1972-07-18 | 1974-07-23 | Gen Electric | Process for recovering 2,2,4-trimethyl-4-(4-hydroxyphenyl)chroman |
| US4240968A (en) * | 1979-04-26 | 1980-12-23 | General Electric Company | Process for isolating and purifying diphenol by-products |
| US4487979A (en) * | 1983-04-18 | 1984-12-11 | Phillips Petroleum Company | Purification |
| US4492807A (en) * | 1983-04-22 | 1985-01-08 | General Electric Company | Method for purification of bisphenol A |
| US4740635A (en) * | 1986-10-20 | 1988-04-26 | General Electric Company | Process for crystallizing bisphenol-A |
-
1995
- 1995-08-01 US US08/509,890 patent/US5773633A/en not_active Expired - Lifetime
-
1996
- 1996-05-23 SG SG1996009869A patent/SG45476A1/en unknown
- 1996-07-26 JP JP8196806A patent/JPH09118675A/ja not_active Withdrawn
- 1996-07-31 DE DE69600865T patent/DE69600865T2/de not_active Expired - Fee Related
- 1996-07-31 EP EP96305609A patent/EP0757047B1/en not_active Expired - Lifetime
- 1996-07-31 ES ES96305609T patent/ES2124066T3/es not_active Expired - Lifetime
- 1996-08-01 CN CN96111366A patent/CN1147513A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0757047A2 (en) | 1997-02-05 |
| EP0757047B1 (en) | 1998-10-28 |
| CN1147513A (zh) | 1997-04-16 |
| DE69600865D1 (de) | 1998-12-03 |
| JPH09118675A (ja) | 1997-05-06 |
| ES2124066T3 (es) | 1999-01-16 |
| US5773633A (en) | 1998-06-30 |
| EP0757047A3 (en) | 1997-02-12 |
| DE69600865T2 (de) | 1999-05-27 |
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