FR2376109A1 - Purifying crude di:phenol monomers by recrystallisation - from water contg. hydroxylic co-solvent, e.g. ethylene glycol (NL 4.7.78) - Google Patents
Purifying crude di:phenol monomers by recrystallisation - from water contg. hydroxylic co-solvent, e.g. ethylene glycol (NL 4.7.78)Info
- Publication number
- FR2376109A1 FR2376109A1 FR7739515A FR7739515A FR2376109A1 FR 2376109 A1 FR2376109 A1 FR 2376109A1 FR 7739515 A FR7739515 A FR 7739515A FR 7739515 A FR7739515 A FR 7739515A FR 2376109 A1 FR2376109 A1 FR 2376109A1
- Authority
- FR
- France
- Prior art keywords
- water
- alcohols
- ethylene glycol
- solvent
- hydroxylic
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
- C07C319/26—Separation; Purification; Stabilisation; Use of additives
- C07C319/28—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C315/00—Preparation of sulfones; Preparation of sulfoxides
- C07C315/06—Separation; Purification; Stabilisation; Use of additives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Crude diphenols (I) are purified by warming a slurry with a mixt. of water and >=1 water-soluble, alcoholic or phenolic cosolvent (II), until (I) has completely dissolved (or nearly so), to the b. pt. (or near the b. pt.) of water or the solvent system. The soln. is then cooled to cause sepn. of purified (I) which is recovered. (II) are pref. mono-, di- or tri-valent alcohols, ether alcohols, amino-alcohols, keto-alcohols or phenols, specifically (m)ethanol, 1,2-propylene glycol or ethylene glycol. (I) is esp. bisphenol A (Ia). (I) are monomers. This method avoids the use of expensive solvents such as benzene or CH2Cl2, or separate solvent recovery stages.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/041,642 US4242527A (en) | 1977-12-28 | 1979-05-23 | Process for purifying crude diphenols |
US06/156,953 US4320234A (en) | 1977-12-28 | 1980-06-06 | Process for purifying crude diphenols |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US75598276A | 1976-12-30 | 1976-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2376109A1 true FR2376109A1 (en) | 1978-07-28 |
Family
ID=25041513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7739515A Withdrawn FR2376109A1 (en) | 1976-12-30 | 1977-12-28 | Purifying crude di:phenol monomers by recrystallisation - from water contg. hydroxylic co-solvent, e.g. ethylene glycol (NL 4.7.78) |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS53101347A (en) |
DE (1) | DE2758565A1 (en) |
FR (1) | FR2376109A1 (en) |
NL (1) | NL7714564A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4300000A (en) | 1977-12-28 | 1981-11-10 | General Electric Company | Process for the recovery of 2,2-bis(4-hydroxyphenyl)propane |
JPS5639030A (en) * | 1979-09-07 | 1981-04-14 | Sumitomo Chem Co Ltd | Purification of p,p'-biphenols |
US4414422A (en) * | 1982-05-10 | 1983-11-08 | The Dow Chemical Company | Purification of 4,4-dihydroxybiphenyl |
JPS62138443A (en) * | 1985-12-11 | 1987-06-22 | Mitsui Toatsu Chem Inc | Production of biscresol |
US4950806A (en) * | 1988-02-22 | 1990-08-21 | Mitsui Toatsu Chemicals, Inc. | Process for crystallizing adduct of bisphenol A with phenol |
DE3900680C1 (en) * | 1989-01-12 | 1989-11-09 | Bayer Ag, 5090 Leverkusen, De | |
US4992598A (en) * | 1990-02-09 | 1991-02-12 | Hoechst Celanese Corporation | Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane |
-
1977
- 1977-12-28 JP JP15755777A patent/JPS53101347A/en active Pending
- 1977-12-28 FR FR7739515A patent/FR2376109A1/en not_active Withdrawn
- 1977-12-29 DE DE19772758565 patent/DE2758565A1/en active Pending
- 1977-12-29 NL NL7714564A patent/NL7714564A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JPS53101347A (en) | 1978-09-04 |
NL7714564A (en) | 1978-07-04 |
DE2758565A1 (en) | 1978-07-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |