BE738962A - - Google Patents
Info
- Publication number
- BE738962A BE738962A BE738962DA BE738962A BE 738962 A BE738962 A BE 738962A BE 738962D A BE738962D A BE 738962DA BE 738962 A BE738962 A BE 738962A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681793431 DE1793431A1 (de) | 1968-09-17 | 1968-09-17 | Verfahren zur Reinigung von 4,4'-Dihydroxydiphenylpropan-(2,2) oder des Phenoladduktes dieser Verbindungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE738962A true BE738962A (xx) | 1970-03-02 |
Family
ID=5707702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE738962D BE738962A (xx) | 1968-09-17 | 1969-09-17 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5011909B1 (xx) |
| BE (1) | BE738962A (xx) |
| DE (1) | DE1793431A1 (xx) |
| FR (1) | FR2018276A1 (xx) |
| GB (1) | GB1277282A (xx) |
| NL (1) | NL6913707A (xx) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5629457A (en) * | 1993-02-16 | 1997-05-13 | Tianjin University | Dephenolizing process for production of high-quality polycarbonate grade bisphenol A |
| US5648561A (en) * | 1993-02-17 | 1997-07-15 | China Petro-Chemical Corporation | Process for the production of high purity and ultrapure bisphenol-A |
| US5696295A (en) * | 1994-04-18 | 1997-12-09 | Bayer Ag | Method for the preparation of ultra-pure bisphenol A and the use thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT971366B (it) * | 1972-11-30 | 1974-04-30 | Sir Soc Italiana Resine Spa | Procedimento per la produzione di 2 2 4 4 diidrossidifenil propano |
-
1968
- 1968-09-17 DE DE19681793431 patent/DE1793431A1/de active Pending
-
1969
- 1969-08-14 GB GB4062669A patent/GB1277282A/en not_active Expired
- 1969-09-09 NL NL6913707A patent/NL6913707A/xx unknown
- 1969-09-16 JP JP7283269A patent/JPS5011909B1/ja active Pending
- 1969-09-17 FR FR6931631A patent/FR2018276A1/fr not_active Withdrawn
- 1969-09-17 BE BE738962D patent/BE738962A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5629457A (en) * | 1993-02-16 | 1997-05-13 | Tianjin University | Dephenolizing process for production of high-quality polycarbonate grade bisphenol A |
| US5648561A (en) * | 1993-02-17 | 1997-07-15 | China Petro-Chemical Corporation | Process for the production of high purity and ultrapure bisphenol-A |
| US5696295A (en) * | 1994-04-18 | 1997-12-09 | Bayer Ag | Method for the preparation of ultra-pure bisphenol A and the use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6913707A (xx) | 1970-03-19 |
| JPS5011909B1 (xx) | 1975-05-07 |
| FR2018276A1 (xx) | 1970-05-29 |
| DE1793431A1 (de) | 1971-07-01 |
| GB1277282A (en) | 1972-06-07 |