GB1047116A - Process for the recovery of amines - Google Patents

Process for the recovery of amines

Info

Publication number
GB1047116A
GB1047116A GB10388/65A GB1038865A GB1047116A GB 1047116 A GB1047116 A GB 1047116A GB 10388/65 A GB10388/65 A GB 10388/65A GB 1038865 A GB1038865 A GB 1038865A GB 1047116 A GB1047116 A GB 1047116A
Authority
GB
United Kingdom
Prior art keywords
amines
aromatic
phosgenation
distillation residue
residue obtained
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.)
Expired
Application number
GB10388/65A
Inventor
Irvin Bruce Van Horn
Eugene Leroy Powers
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.)
Bayer Corp
Original Assignee
Mobay Corp
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 Mobay Corp filed Critical Mobay Corp
Publication of GB1047116A publication Critical patent/GB1047116A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/68—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
    • C07C209/78—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton from carbonyl compounds, e.g. from formaldehyde, and amines having amino groups bound to carbon atoms of six-membered aromatic rings, with formation of methylene-diarylamines
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/82—Purification; Separation; Stabilisation; Use of additives
    • C07C209/84—Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C211/00—Compounds containing amino groups bound to a carbon skeleton
    • C07C211/43—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
    • C07C211/44—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to only one six-membered aromatic ring
    • C07C211/49—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to only one six-membered aromatic ring having at least two amino groups bound to the carbon skeleton
    • C07C211/50—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to only one six-membered aromatic ring having at least two amino groups bound to the carbon skeleton with at least two amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Primary aromatic amines are prepared by heating the distillation residue obtained from the product of phosgenation of an aromatic primary amine, after distilling off the corresponding isocyanate, in an aqueous solution containing from 2.5 to 6.25 mols. of alkali metal hydroxide per 1000 gms. of solution at a temperature of from 180 DEG to 350 DEG C. until the distillation residue is converted by reaction with water to the aromatic amine. The process is particularly suitable for the preparation of 2,4- and 2,6-tolylene diamines from the residue obtained when a mixture of 2,4- and 2,6-tolylene diamines is phosgenated. It may also be used, for example, to produce amines from the residues obtained when phenyl isocyanate, diphenyl methane diisocyanates and naphthalene diisocyanates are formed by the phosgenation of the corresponding amines.
GB10388/65A 1964-03-23 1965-03-11 Process for the recovery of amines Expired GB1047116A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35412964A 1964-03-23 1964-03-23

Publications (1)

Publication Number Publication Date
GB1047116A true GB1047116A (en) 1966-11-02

Family

ID=23391985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10388/65A Expired GB1047116A (en) 1964-03-23 1965-03-11 Process for the recovery of amines

Country Status (1)

Country Link
GB (1) GB1047116A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032574A (en) * 1974-10-07 1977-06-28 Takeda Chemical Industries, Ltd. Production of polyetherpolyols useful in preparing rigid polyurethane foams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032574A (en) * 1974-10-07 1977-06-28 Takeda Chemical Industries, Ltd. Production of polyetherpolyols useful in preparing rigid polyurethane foams

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