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
Application number
FR7913746A
Other languages
French (fr)
Other versions
FR2457849B1 (en
Inventor
James Claude Carnahan Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to FR7913746A priority Critical patent/FR2457849A1/en
Publication of FR2457849A1 publication Critical patent/FR2457849A1/en
Application granted granted Critical
Publication of FR2457849B1 publication Critical patent/FR2457849B1/fr
Granted legal-status Critical Current

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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

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  • 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.
FR7913746A 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. Granted FR2457849A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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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