FR2457849A1 - Stabilising a bisphenol during its distn. from a melt - obtd. in the mfr. from a phenol and a carbonyl cpd., by addn. of phthalic anhydride or a deriv. - Google Patents
Stabilising a bisphenol during its distn. from a melt - obtd. in the mfr. from a phenol and a carbonyl cpd., by addn. of phthalic anhydride or a deriv.Info
- Publication number
- FR2457849A1 FR2457849A1 FR7913746A FR7913746A FR2457849A1 FR 2457849 A1 FR2457849 A1 FR 2457849A1 FR 7913746 A FR7913746 A FR 7913746A FR 7913746 A FR7913746 A FR 7913746A FR 2457849 A1 FR2457849 A1 FR 2457849A1
- Authority
- FR
- France
- Prior art keywords
- anhydride
- distn
- addn
- deriv
- obtd
- 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.)
- Granted
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
- C07C37/88—Use of additives, e.g. for stabilisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A biphenol is heated with phthalic ahydride (derivs), in order to satabilise it when in the molten state or while being distilled. Pref. bisphenols are of formula (I) (where R and R1-3 are each H or 1-8C alkyl; Q is 1,1 cyclopentyl, 1,1-cyclohexyl or -CyH2y- and y = 1-5) 100-20,000 ppm (based on wt. of molten bisphenol) of stabiliser is pref. used. The anhydride is e.g. tetrahydrophthalic anhydride or phthalic anhydride substd. by R4 X - (where R4 is 1-8C alkyl, 6-13C aromatic or 4-15 aralkyl; X is O or S). Dianhydrides can also be used, e.g. 2,2-bis 4-(2,3- dicarboxyphenoxy)-phenyl propane dianhydride. The biphenol and anhydride are distilled at 230-290 degrees C, there pref. being 1000-2000 ppm anhydride by wt. of molten biphenol.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7913746A FR2457849A1 (en) | 1979-05-30 | 1979-05-30 | Stabilising a bisphenol during its distn. from a melt - obtd. in the mfr. from a phenol and a carbonyl cpd., by addn. of phthalic anhydride or a deriv. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7913746A FR2457849A1 (en) | 1979-05-30 | 1979-05-30 | Stabilising a bisphenol during its distn. from a melt - obtd. in the mfr. from a phenol and a carbonyl cpd., by addn. of phthalic anhydride or a deriv. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2457849A1 true FR2457849A1 (en) | 1980-12-26 |
FR2457849B1 FR2457849B1 (en) | 1984-03-30 |
Family
ID=9226008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7913746A Granted FR2457849A1 (en) | 1979-05-30 | 1979-05-30 | Stabilising a bisphenol during its distn. from a melt - obtd. in the mfr. from a phenol and a carbonyl cpd., by addn. of phthalic anhydride or a deriv. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2457849A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1258668A (en) * | 1960-06-02 | 1961-04-14 | Bayer Ag | Thermostabilized dihydroxydiarylalkanes and -cycloalkanes |
GB890432A (en) * | 1959-06-27 | 1962-02-28 | Bayer Ag | Thermo-stabilised dihydroxy diaryl alkanes and cyclo-alkanes |
FR1457039A (en) * | 1964-12-24 | 1966-10-28 | Ethyl Corp | Color stabilization of phenols |
FR1502518A (en) * | 1965-11-30 | 1967-11-18 | Hooker Chemical Corp | Color stabilization of phenol |
-
1979
- 1979-05-30 FR FR7913746A patent/FR2457849A1/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB890432A (en) * | 1959-06-27 | 1962-02-28 | Bayer Ag | Thermo-stabilised dihydroxy diaryl alkanes and cyclo-alkanes |
FR1258668A (en) * | 1960-06-02 | 1961-04-14 | Bayer Ag | Thermostabilized dihydroxydiarylalkanes and -cycloalkanes |
FR1457039A (en) * | 1964-12-24 | 1966-10-28 | Ethyl Corp | Color stabilization of phenols |
FR1502518A (en) * | 1965-11-30 | 1967-11-18 | Hooker Chemical Corp | Color stabilization of phenol |
Also Published As
Publication number | Publication date |
---|---|
FR2457849B1 (en) | 1984-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |