GB988623A - Process for the reaction of isobutene with formaldehyde - Google Patents
Process for the reaction of isobutene with formaldehydeInfo
- Publication number
- GB988623A GB988623A GB2356061A GB2356061A GB988623A GB 988623 A GB988623 A GB 988623A GB 2356061 A GB2356061 A GB 2356061A GB 2356061 A GB2356061 A GB 2356061A GB 988623 A GB988623 A GB 988623A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vinyl
- polymers
- reaction
- groups
- sulphonic groups
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
- C07D319/06—1,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
4,4-Dimethyl-m-dioxane is prepared by reacting isobutene with formaldehyde in the presence of catalysts comprising cation exchange resins based on cross-linked aromatic vinyl polymers and containing sulphonic acid groups. Suitable aromatic vinyl compounds for use in the production of the polymers are styrene, vinyl toluenes, vinyl naphthalenes, vinylethyl benzenes, methyl styrenes, vinyl chlorbenzenes and vinyl xylenes. The vinyl compounds may contain sulphonic groups or sulphonic groups may be introduced into the polymers. Polymers already containing sulphonic groups may have further sulphonic groups introduced by treatment with oleum. Advantageously, the reaction is carried out in several reactors in series with thorough mixing of the reactants. Preferably, the reaction is carried out at 50-120 DEG C. at a pressure higher than the vapour pressure of the hydrocarbon at the reaction temperature and C4 fractions from thermal or catalytic processes are suitable for use as starting materials. In some cases some tert-butanol is obtained as by-product. Specification 974,834 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF31529A DE1233880B (en) | 1960-06-29 | 1960-06-29 | Process for the production of 4,4-dimethyl-1,3-dioxane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB988623A true GB988623A (en) | 1965-04-07 |
Family
ID=7094234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2356061A Expired GB988623A (en) | 1960-06-29 | 1961-06-29 | Process for the reaction of isobutene with formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB988623A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013101629A1 (en) | 2011-12-28 | 2013-07-04 | Dow Global Technologies Llc | Strong acid catalyst composition |
| WO2013101584A1 (en) | 2011-12-28 | 2013-07-04 | Rohm And Haas Company | Process for preparing a strong acid catalyst |
-
1961
- 1961-06-29 GB GB2356061A patent/GB988623A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013101629A1 (en) | 2011-12-28 | 2013-07-04 | Dow Global Technologies Llc | Strong acid catalyst composition |
| WO2013101584A1 (en) | 2011-12-28 | 2013-07-04 | Rohm And Haas Company | Process for preparing a strong acid catalyst |
| US9968920B2 (en) | 2011-12-28 | 2018-05-15 | Rohm And Haas Company | Strong acid catalyst composition |
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