JPS5581851A - Preparation of polymethylene polyphenyl polycarbamate - Google Patents

Preparation of polymethylene polyphenyl polycarbamate

Info

Publication number
JPS5581851A
JPS5581851A JP15414378A JP15414378A JPS5581851A JP S5581851 A JPS5581851 A JP S5581851A JP 15414378 A JP15414378 A JP 15414378A JP 15414378 A JP15414378 A JP 15414378A JP S5581851 A JPS5581851 A JP S5581851A
Authority
JP
Japan
Prior art keywords
solution
polymethylene polyphenyl
formaldehyde
polyphenyl polycarbamate
aqueous
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
JP15414378A
Other languages
Japanese (ja)
Other versions
JPS5757030B2 (en
Inventor
Katsuji Miyata
Seiji Hasegawa
Shinobu Aoki
Retsu Hara
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 JP15414378A priority Critical patent/JPS5581851A/en
Priority to IT27992/79A priority patent/IT1126563B/en
Priority to GB7942809A priority patent/GB2044252B/en
Priority to NLAANVRAGE7908982,A priority patent/NL185077C/en
Priority to CA000341827A priority patent/CA1120051A/en
Priority to FR7930757A priority patent/FR2444057B1/en
Priority to DE2950386A priority patent/DE2950386C2/en
Publication of JPS5581851A publication Critical patent/JPS5581851A/en
Publication of JPS5757030B2 publication Critical patent/JPS5757030B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

PURPOSE: To prepare a polymethylene polyphenyl polycarbamate without pollution problems, by reacting an N-phenylcarbamate with formaldehyde in the presence of an aqueous acid solution while separating and recovering said solution.
CONSTITUTION: An N-phenylcarbamate I (R1 is 1W6C lower alkyl or cycloalkyl; R2 is H, halogen, 1W6C lower alkyl or alkoxy; n is 1W4) is reacted with formaldehyde or a formaldehyde-producing compound in the presence of an acid catalyst to give a polymethylene polyphenyl polycarbamate II (m is 0 or 1W5). The reaction is carried out in the presence of an aqueous acid solution and the solution is separated and recovered from the product and reused. Since the product and the aqueous solution easily separate into two layers after the reaction, the recovery of the acid is easy and the aqueous solution maintains the catalytic activity.
COPYRIGHT: (C)1980,JPO&Japio
JP15414378A 1978-12-14 1978-12-15 Preparation of polymethylene polyphenyl polycarbamate Granted JPS5581851A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP15414378A JPS5581851A (en) 1978-12-15 1978-12-15 Preparation of polymethylene polyphenyl polycarbamate
IT27992/79A IT1126563B (en) 1978-12-14 1979-12-07 PROCESS FOR PREPARING POLIMETILEN POLIFENIL POLICARBAMMATI
GB7942809A GB2044252B (en) 1978-12-14 1979-12-12 Process for preparing polymethylene polyphenyl polycarbamates
NLAANVRAGE7908982,A NL185077C (en) 1978-12-14 1979-12-13 PROCESS FOR PREPARING A POLYMETHYLENE POLYPHENYL POLYCARBAMATE
CA000341827A CA1120051A (en) 1978-12-14 1979-12-13 Process for preparing polymethylene polyphenyl polycarbamates
FR7930757A FR2444057B1 (en) 1978-12-14 1979-12-14 PROCESS FOR THE PREPARATION OF POLYMETHYLENE POLYPHENYL POLYCARBAMATES
DE2950386A DE2950386C2 (en) 1978-12-14 1979-12-14 Process for the preparation of polymethylene polyphenyl polycarbamates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15414378A JPS5581851A (en) 1978-12-15 1978-12-15 Preparation of polymethylene polyphenyl polycarbamate

Publications (2)

Publication Number Publication Date
JPS5581851A true JPS5581851A (en) 1980-06-20
JPS5757030B2 JPS5757030B2 (en) 1982-12-02

Family

ID=15577809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15414378A Granted JPS5581851A (en) 1978-12-14 1978-12-15 Preparation of polymethylene polyphenyl polycarbamate

Country Status (1)

Country Link
JP (1) JPS5581851A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5770855A (en) * 1980-10-17 1982-05-01 Asahi Chem Ind Co Ltd Preparation of methylene-bis-(4-phenylcarbamic acid ester)
JPS59153962U (en) * 1983-03-31 1984-10-16 三菱重工業株式会社 folding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5770855A (en) * 1980-10-17 1982-05-01 Asahi Chem Ind Co Ltd Preparation of methylene-bis-(4-phenylcarbamic acid ester)
JPS6125705B2 (en) * 1980-10-17 1986-06-17 Asahi Chemical Ind
JPS59153962U (en) * 1983-03-31 1984-10-16 三菱重工業株式会社 folding machine

Also Published As

Publication number Publication date
JPS5757030B2 (en) 1982-12-02

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