GB361153A - Improvements in or relating to the manufacture of acrylic acid esters - Google Patents
Improvements in or relating to the manufacture of acrylic acid estersInfo
- Publication number
- GB361153A GB361153A GB37815/30A GB3781530A GB361153A GB 361153 A GB361153 A GB 361153A GB 37815/30 A GB37815/30 A GB 37815/30A GB 3781530 A GB3781530 A GB 3781530A GB 361153 A GB361153 A GB 361153A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- sulphuric acid
- hydroquinone
- acid
- hydracrylic
- 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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/52—Esters of acyclic unsaturated carboxylic acids having the esterified carboxyl group bound to an acyclic carbon atom
- C07C69/533—Monocarboxylic acid esters having only one carbon-to-carbon double bond
- C07C69/54—Acrylic acid esters; Methacrylic acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Hydracrylic esters or their alkoxy derivatives are converted to acrylic esters by heating in the presence of dehydrating agents, e.g. sulphuric acid, phosphoric acid, and silica gel. Polymerization of the products may be suppressed by the addition of stabilizers such as hydroquinone, naphthols, sulphur, copper, and copper compounds. Further, salts or metals or mixtures thereof which facilitate the reaction may be added; suitable materials for this purpose are sulphates, phosphates, and borates, iron, and copper. In examples, (1) hydracrylic acid ethyl ester is passed in vapour form over silica gel saturated with sulphuric acid and (2) the vapour of b -methoxy propionic acid methyl ester is passed into concentrated sulphuric acid containing small quantities of ammonium sulphate and hydroquinone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE361153X | 1930-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB361153A true GB361153A (en) | 1931-11-19 |
Family
ID=6298068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37815/30A Expired GB361153A (en) | 1930-02-20 | 1930-12-15 | Improvements in or relating to the manufacture of acrylic acid esters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB361153A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2457225A (en) * | 1946-05-01 | 1948-12-28 | Du Pont | Preparation of acrylates |
| US2531512A (en) * | 1946-11-05 | 1950-11-28 | Union Carbide & Carbon Corp | Process for making sorbic acid esters |
-
1930
- 1930-12-15 GB GB37815/30A patent/GB361153A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2457225A (en) * | 1946-05-01 | 1948-12-28 | Du Pont | Preparation of acrylates |
| US2531512A (en) * | 1946-11-05 | 1950-11-28 | Union Carbide & Carbon Corp | Process for making sorbic acid esters |
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