JPS53137929A - Purification of aromatic urethane - Google Patents

Purification of aromatic urethane

Info

Publication number
JPS53137929A
JPS53137929A JP5126477A JP5126477A JPS53137929A JP S53137929 A JPS53137929 A JP S53137929A JP 5126477 A JP5126477 A JP 5126477A JP 5126477 A JP5126477 A JP 5126477A JP S53137929 A JPS53137929 A JP S53137929A
Authority
JP
Japan
Prior art keywords
aromatic urethane
purification
aromatic
compound
urethane
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
JP5126477A
Other languages
Japanese (ja)
Other versions
JPS5811942B2 (en
Inventor
Hiroshi Hirai
Katsuji Miyata
Makoto Aiga
Kazunari Nitta
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP5126477A priority Critical patent/JPS5811942B2/en
Publication of JPS53137929A publication Critical patent/JPS53137929A/en
Publication of JPS5811942B2 publication Critical patent/JPS5811942B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Catalysts (AREA)

Abstract

PURPOSE: To obtain a high quality aromatic urethane from crude aromatic urethane, which is obtained by the reaction of an aromatic nitro compound, an organic compound containing hydroxyl groups and CO using a catalyst containing a metallic compound of the platinum group, by treating with an acidic aqueous solution, thereby removing impurities.
COPYRIGHT: (C)1978,JPO&Japio
JP5126477A 1977-05-06 1977-05-06 Aromatic urethane purification method Expired JPS5811942B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5126477A JPS5811942B2 (en) 1977-05-06 1977-05-06 Aromatic urethane purification method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5126477A JPS5811942B2 (en) 1977-05-06 1977-05-06 Aromatic urethane purification method

Publications (2)

Publication Number Publication Date
JPS53137929A true JPS53137929A (en) 1978-12-01
JPS5811942B2 JPS5811942B2 (en) 1983-03-05

Family

ID=12882076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5126477A Expired JPS5811942B2 (en) 1977-05-06 1977-05-06 Aromatic urethane purification method

Country Status (1)

Country Link
JP (1) JPS5811942B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229735U (en) * 1985-08-07 1987-02-23

Also Published As

Publication number Publication date
JPS5811942B2 (en) 1983-03-05

Similar Documents

Publication Publication Date Title
JPS525800A (en) Method of purifying stevioside
JPS5427520A (en) Purification of crude acrylic acid
JPS52155175A (en) Treatment of exhaust gas containing organic matter
JPS53137929A (en) Purification of aromatic urethane
JPS5394447A (en) Method of traeting waste water containing ammonia nitrogen
JPS5432412A (en) Purification of ketone
JPS52108991A (en) Purification of lactam
JPS5252466A (en) Method for biological denitrification of wastewater
JPS527930A (en) Process for purification of hydroquinone
JPS51125363A (en) Process for freparation of alkylidenebiscyclohexylamines
JPS53144543A (en) Improved method of producing cylcohexane derivative
JPS53119832A (en) Preparation of p-phenylenediamine
JPS52102235A (en) Manufacture of phenols
JPS5277048A (en) Purification of anthraquinones having substituents
JPS5315338A (en) Preparation of polyurethane
JPS54119587A (en) Purification of highly crystalline polyolenfin
JPS53121713A (en) Separation of butanediol
JPS52108992A (en) Purification of cefalexin
JPS5484550A (en) Production of urethane
JPS5240424A (en) Process for removing fluorine from zinc sludge containing fluorine
JPS5249995A (en) Method for purificating raw aqueous solution of zinc chloride system
JPS5262339A (en) Production of insulating coating containing water as solvent
JPS5424854A (en) Preparation of aromatic urethane compound
JPS525717A (en) Process for purification of hydroquinone
JPS53137930A (en) Preparation of aromatic isocyanates