JPS5579358A - Preparation of polyethylene polyphenyl carbamate - Google Patents

Preparation of polyethylene polyphenyl carbamate

Info

Publication number
JPS5579358A
JPS5579358A JP15301878A JP15301878A JPS5579358A JP S5579358 A JPS5579358 A JP S5579358A JP 15301878 A JP15301878 A JP 15301878A JP 15301878 A JP15301878 A JP 15301878A JP S5579358 A JPS5579358 A JP S5579358A
Authority
JP
Japan
Prior art keywords
formaldehyde
acid
phenylcarbamate
integer
formula
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
JP15301878A
Other languages
Japanese (ja)
Other versions
JPS5757028B2 (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 JP15301878A priority Critical patent/JPS5579358A/en
Priority to IT27991/79A priority patent/IT1126562B/en
Priority to CA000341545A priority patent/CA1119609A/en
Priority to GB7942812A priority patent/GB2039898B/en
Priority to NL7908935A priority patent/NL7908935A/en
Priority to FR7930468A priority patent/FR2444054B1/en
Priority to DE19792950260 priority patent/DE2950260A1/en
Publication of JPS5579358A publication Critical patent/JPS5579358A/en
Publication of JPS5757028B2 publication Critical patent/JPS5757028B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/701—Compounds forming isocyanates or isothiocyanates in situ
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urethanes or thiourethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/80—Masked polyisocyanates
    • C08G18/8061—Masked polyisocyanates masked with compounds having only one group containing active hydrogen
    • C08G18/8064—Masked polyisocyanates masked with compounds having only one group containing active hydrogen with monohydroxy compounds

Abstract

PURPOSE: To obtain the title compound useful as medicines, agricultural chemicals, and a raw material for polyamide, industrially advantageously, by reacting N- phenylcarbamate with formaldehyde in the presence of excessively strong acids having a large dissociation constant in acetic acid.
CONSTITUTION: An N-phenylcarbamate of formula I (R1 is lW6C lower alkyl or cycloalkyl; R2 is H, halogen, etc.; n is integer 1W4) is reacted with formaldehyde or a compound producing formaldehyde, in the presence of an acid having a large dissociation constant (Ka) of 1.25×10-7 or above at 25°C, e.g. hydriodic acid or hydrobromic acid, to obtain polymethylene-polyphenyl-polycarbamate of formula II (m is integer 0.1W5). This method provides a reaction rate twice or more that in the well-known ones by ordinary acids, and increases the yield of products per unit time, with lighter equipment.
COPYRIGHT: (C)1980,JPO&Japio
JP15301878A 1978-12-13 1978-12-13 Preparation of polyethylene polyphenyl carbamate Granted JPS5579358A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP15301878A JPS5579358A (en) 1978-12-13 1978-12-13 Preparation of polyethylene polyphenyl carbamate
IT27991/79A IT1126562B (en) 1978-12-13 1979-12-07 PROCESS FOR PREPARING POLIMETILEN POLIFENIL POLICARBAMMATI
CA000341545A CA1119609A (en) 1978-12-13 1979-12-10 Process for preparing polymethylene polyphenyl polycarbamates
GB7942812A GB2039898B (en) 1978-12-13 1979-12-12 Process for preparing polymethylene polyphenyl polycarbamates
NL7908935A NL7908935A (en) 1978-12-13 1979-12-12 PROCESS FOR THE PREPARATION OF POLYMETHYLENE POLYPHENYL POLYCARBAMATES AND FORMED PRODUCTS, MANUFACTURED USING THE POLYCARBAMATES SO PREPARED.
FR7930468A FR2444054B1 (en) 1978-12-13 1979-12-12 PROCESS FOR THE PREPARATION OF POLYMETHYLENE POLYPHENYL POLYCARBAMATES
DE19792950260 DE2950260A1 (en) 1978-12-13 1979-12-13 METHOD FOR PRODUCING POLYMETHYLENE POLYPHENYL POLYCARBAMATES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15301878A JPS5579358A (en) 1978-12-13 1978-12-13 Preparation of polyethylene polyphenyl carbamate

Publications (2)

Publication Number Publication Date
JPS5579358A true JPS5579358A (en) 1980-06-14
JPS5757028B2 JPS5757028B2 (en) 1982-12-02

Family

ID=15553157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15301878A Granted JPS5579358A (en) 1978-12-13 1978-12-13 Preparation of polyethylene polyphenyl carbamate

Country Status (7)

Country Link
JP (1) JPS5579358A (en)
CA (1) CA1119609A (en)
DE (1) DE2950260A1 (en)
FR (1) FR2444054B1 (en)
GB (1) GB2039898B (en)
IT (1) IT1126562B (en)
NL (1) NL7908935A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038005A1 (en) * 1980-04-11 1981-10-21 BASF Aktiengesellschaft Process for the production of methylene-bis-phenylcarbamic acid esters and polymethylene polyphenylcarbamic acid esters

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946768A (en) * 1957-08-12 1960-07-26 Bayer Ag Condensation products of carbamic acid esters
US4162362A (en) * 1978-10-20 1979-07-24 Atlantic Richfield Company Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038005A1 (en) * 1980-04-11 1981-10-21 BASF Aktiengesellschaft Process for the production of methylene-bis-phenylcarbamic acid esters and polymethylene polyphenylcarbamic acid esters

Also Published As

Publication number Publication date
IT1126562B (en) 1986-05-21
DE2950260A1 (en) 1980-06-26
NL7908935A (en) 1980-06-17
FR2444054A1 (en) 1980-07-11
FR2444054B1 (en) 1985-11-15
CA1119609A (en) 1982-03-09
GB2039898A (en) 1980-08-20
GB2039898B (en) 1983-05-25
IT7927991A0 (en) 1979-12-07
JPS5757028B2 (en) 1982-12-02

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