GB573175A - Improvements in or relating to the manufacture of unsaturated organic compounds - Google Patents
Improvements in or relating to the manufacture of unsaturated organic compoundsInfo
- Publication number
- GB573175A GB573175A GB112443A GB112443A GB573175A GB 573175 A GB573175 A GB 573175A GB 112443 A GB112443 A GB 112443A GB 112443 A GB112443 A GB 112443A GB 573175 A GB573175 A GB 573175A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxygen
- polymerization
- relating
- manufacture
- organic compounds
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
- C08F2/40—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation using retarding agents
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Methacrylic acid and its derivatives such as the esters, amide and nitrile are protected against polymerization during their production or distillation by intimate contact with air or oxygen while at temperatures at which polymerization would otherwise occur. Air or oxygen may be bubbled through the liquid or introduced into the vapour. A known inhibitor such as pyrogallol or hydroquinone may be added in small quantity. Examples describe the production from acetone cyanhydrin of methacrylic esters and methacrylic acid. The Provisional Specification states that oxygen is effective for preventing the polymerization at ordinary temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB112443A GB573175A (en) | 1943-01-22 | 1943-01-22 | Improvements in or relating to the manufacture of unsaturated organic compounds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB112443A GB573175A (en) | 1943-01-22 | 1943-01-22 | Improvements in or relating to the manufacture of unsaturated organic compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
GB573175A true GB573175A (en) | 1945-11-09 |
Family
ID=9716570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB112443A Expired GB573175A (en) | 1943-01-22 | 1943-01-22 | Improvements in or relating to the manufacture of unsaturated organic compounds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB573175A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810744A (en) * | 1955-03-25 | 1957-10-22 | Exxon Research Engineering Co | Polymerization process for preparing lubricant additives and products |
GB2179403A (en) * | 1985-08-12 | 1987-03-04 | Alh Syst Ltd | Sealant delivery system |
US4675436A (en) * | 1985-05-23 | 1987-06-23 | Basf Aktiengesellschaft | Preparation of alkyl esters of α,β-monoolefinically unsaturated monocarboxylic acids |
US4745214A (en) * | 1986-06-20 | 1988-05-17 | Norsolor | Process for the preparation of an aqueous solution of unsaturated quaternary ammonium salts |
EP2325166A4 (en) * | 2008-08-08 | 2015-05-06 | Showa Denko Kk | Method for inhibiting polymerization of ethylenically unsaturated carboxylic acid ester compound containing isocyanate group and method for producing ethylenically unsaturated carboxylic acid ester compound containing isocyanate group |
-
1943
- 1943-01-22 GB GB112443A patent/GB573175A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810744A (en) * | 1955-03-25 | 1957-10-22 | Exxon Research Engineering Co | Polymerization process for preparing lubricant additives and products |
US4675436A (en) * | 1985-05-23 | 1987-06-23 | Basf Aktiengesellschaft | Preparation of alkyl esters of α,β-monoolefinically unsaturated monocarboxylic acids |
GB2179403A (en) * | 1985-08-12 | 1987-03-04 | Alh Syst Ltd | Sealant delivery system |
US4745214A (en) * | 1986-06-20 | 1988-05-17 | Norsolor | Process for the preparation of an aqueous solution of unsaturated quaternary ammonium salts |
EP2325166A4 (en) * | 2008-08-08 | 2015-05-06 | Showa Denko Kk | Method for inhibiting polymerization of ethylenically unsaturated carboxylic acid ester compound containing isocyanate group and method for producing ethylenically unsaturated carboxylic acid ester compound containing isocyanate group |
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