JPS56156252A - Preparation of methylene dicarbanilates - Google Patents
Preparation of methylene dicarbanilatesInfo
- Publication number
- JPS56156252A JPS56156252A JP5929380A JP5929380A JPS56156252A JP S56156252 A JPS56156252 A JP S56156252A JP 5929380 A JP5929380 A JP 5929380A JP 5929380 A JP5929380 A JP 5929380A JP S56156252 A JPS56156252 A JP S56156252A
- Authority
- JP
- Japan
- Prior art keywords
- acid catalyst
- methylene
- solid acid
- carbanilate
- hcho
- 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.)
- Pending
Links
Landscapes
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled substance useful as an intermediate for a raw material of polyurethane in high yield, by reacting a carbanilate with HCHO in the presence of a solid acid catalyst using a specific reaction solvent.
CONSTITUTION: A carbanilate shown by the formula (R is 1W4C alkyl, or phenyl; X, Y, and X are H, halogen, 1W5C alkyl, etc.) is reacted with HCHO in the presence of a solid acid catalyst having a proton exchange capacity at least 0.1meq./g to give a methylene dicarbanilate. In the reaction, an aliphatic carboxylic acid or its anhydride (e.g., acetic acid) is used as at least one component of a reaction solvent. A sulfonic acid type cation exchange resin, etc. consisting of styrene-divinylbenzene copolymer as a parent body may be cited as the solid acid catalyst.
EFFECT: The use of phosgene is not required.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5929380A JPS56156252A (en) | 1980-05-02 | 1980-05-02 | Preparation of methylene dicarbanilates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5929380A JPS56156252A (en) | 1980-05-02 | 1980-05-02 | Preparation of methylene dicarbanilates |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56156252A true JPS56156252A (en) | 1981-12-02 |
Family
ID=13109183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5929380A Pending JPS56156252A (en) | 1980-05-02 | 1980-05-02 | Preparation of methylene dicarbanilates |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56156252A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5557550A (en) * | 1978-10-20 | 1980-04-28 | Atlantic Richfield Co | Manufacture of diphenylmethanedicarbamate and polymethylenepolyphenylcarbamate |
-
1980
- 1980-05-02 JP JP5929380A patent/JPS56156252A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5557550A (en) * | 1978-10-20 | 1980-04-28 | Atlantic Richfield Co | Manufacture of diphenylmethanedicarbamate and polymethylenepolyphenylcarbamate |
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