Способ получения 4,4-диметилдиоксана
Patents
| Language: |
Русский |
| Type: |
Certificate of authorship |
| Number |
SU 165434 |
| Request number: |
834851/23-4 |
| Request date: |
May 6, 1963 |
| patent.field.start_date: |
|
| Registration date: |
Oct 12, 1964 |
| patent.field.request_publication_date: |
|
| Authors |
Дзисько В.А.
,
Макаров А.Д.
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
|
4,4-Dimethyldioxane is prepd. by the reaction of HCHO with isobutylene or iso-BuOH at 50-400° on solid catalysts with an acidity ≤ + 1.5, e.g., silica gel with an Al2O3 concn. <0.005%, or with an acidity from -8 to -3, e.g., SiO2-ZrO2 or SiO2-MgO, resp.