JPS5770855A - Preparation of methylene-bis-(4-phenylcarbamic acid ester) - Google Patents

Preparation of methylene-bis-(4-phenylcarbamic acid ester)

Info

Publication number
JPS5770855A
JPS5770855A JP55145526A JP14552680A JPS5770855A JP S5770855 A JPS5770855 A JP S5770855A JP 55145526 A JP55145526 A JP 55145526A JP 14552680 A JP14552680 A JP 14552680A JP S5770855 A JPS5770855 A JP S5770855A
Authority
JP
Japan
Prior art keywords
acid ester
methylene
bis
dialkoxymethane
acid
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
JP55145526A
Other languages
Japanese (ja)
Other versions
JPS6125705B2 (en
Inventor
Shinsuke Fukuoka
Masazumi Chono
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Priority to JP55145526A priority Critical patent/JPS5770855A/en
Publication of JPS5770855A publication Critical patent/JPS5770855A/en
Publication of JPS6125705B2 publication Critical patent/JPS6125705B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: To obtain the titled compound in high yield useful as a raw material for preparing polyurethane with producing a small amount of by-products, by reacting an N-phenylcarbamic acid ester with a dialkoxymethane in the presence of an extremely strong solid acid.
CONSTITUTION: A extrelemu strpmg spood acod (e.g., SbF5, BF3, etc.) os sispended in a mixed solution of an N-phenylcarbamic acid ester shown by the formulaI(R is 1W5C alkyl or halogenated alkyl) and a dialkoxymethane shown by tge formula II(R' is 1W5C lower alkyl) or the acid as a fixed bed is added to the mixed solution, and the reaction is carried out at ≤250°C, to give a methylene-bis(4-phenylcxarbamic acid ester) shown by the formula III.
EFFECT: The condensation reaction is effected in substantially anhydrous state, the catalytic activity of the extremely strong solid acid is maintained without lowering it, and hydrolysis of the raw materials and the reaction product, and other side reations are suppressed. The raw materials can be recovered efficiently, the corrosion of the reactor is low, and the treatment of waste is easy.
COPYRIGHT: (C)1982,JPO&Japio
JP55145526A 1980-10-17 1980-10-17 Preparation of methylene-bis-(4-phenylcarbamic acid ester) Granted JPS5770855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55145526A JPS5770855A (en) 1980-10-17 1980-10-17 Preparation of methylene-bis-(4-phenylcarbamic acid ester)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55145526A JPS5770855A (en) 1980-10-17 1980-10-17 Preparation of methylene-bis-(4-phenylcarbamic acid ester)

Publications (2)

Publication Number Publication Date
JPS5770855A true JPS5770855A (en) 1982-05-01
JPS6125705B2 JPS6125705B2 (en) 1986-06-17

Family

ID=15387251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55145526A Granted JPS5770855A (en) 1980-10-17 1980-10-17 Preparation of methylene-bis-(4-phenylcarbamic acid ester)

Country Status (1)

Country Link
JP (1) JPS5770855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011144173A (en) * 2010-01-12 2011-07-28 Evonik Degussa Gmbh Process of producing 1,1 diaryl alkane and derivative thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63103202U (en) * 1986-12-26 1988-07-05

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581851A (en) * 1978-12-15 1980-06-20 Mitsui Toatsu Chem Inc Preparation of polymethylene polyphenyl polycarbamate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581851A (en) * 1978-12-15 1980-06-20 Mitsui Toatsu Chem Inc Preparation of polymethylene polyphenyl polycarbamate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011144173A (en) * 2010-01-12 2011-07-28 Evonik Degussa Gmbh Process of producing 1,1 diaryl alkane and derivative thereof

Also Published As

Publication number Publication date
JPS6125705B2 (en) 1986-06-17

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