GB1217234A - PROCESS FOR THE PREPARATION OF 4,4'DIMETHYL-1,3-DIOXANE FROM i-BUTENE AND FORMALDEHYDE - Google Patents
PROCESS FOR THE PREPARATION OF 4,4'DIMETHYL-1,3-DIOXANE FROM i-BUTENE AND FORMALDEHYDEInfo
- Publication number
- GB1217234A GB1217234A GB2325/68A GB232568A GB1217234A GB 1217234 A GB1217234 A GB 1217234A GB 2325/68 A GB2325/68 A GB 2325/68A GB 232568 A GB232568 A GB 232568A GB 1217234 A GB1217234 A GB 1217234A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrocarbons
- isobutene
- dioxane
- separators
- dimethyl
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/06—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
- B01J31/08—Ion-exchange resins
- B01J31/10—Ion-exchange resins sulfonated
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/30—Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J2231/32—Addition reactions to C=C or C-C triple bonds
- B01J2231/324—Cyclisations via conversion of C-C multiple to single or less multiple bonds, e.g. cycloadditions
- B01J2231/328—Cycloadditions involving more than 2 components or moieties, e.g. intra-/intermolecualar [2+2+2] or [2+2+1], e.g. Pauson-Khand type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,217,234. 4,4 - Dimethyl - 1,3 - dioxane. FARBENFABRIKEN BAYER A.G. 16 Jan., 1968 [15 Feb., 1967], No. 2325/68. Heading C2C. A process for the preparation of 4,4-dimethyl- 1,3-dioxane from isobutene and aqueous formaldehyde in which the reaction is carried out in the liquid phase under superatmospheric pressure and at a temperature of 60‹ to 130‹ C. in the presence of sulphonic acid group containing cation exchangers based on cross-linked aromatic vinyl polymers comprises reacting the isobutene and aqueous formaldehyde together in a plurality of series connected, thoroughly stirred vessels, the molar ratio of isobutene to formaldehyde being in the range of from 0À5:1 to 3:1 and separating the reaction products in a separator situated between two successve vessels into a hydrocarbon layer and an aqueous layer including catalyst, in which the reactants are conducted through the series of reactors and the interposed separators and the hydrocarbon layer drawn off from the separators is separated by distillation into uncoverted hydrocarbons and into conversion products, and in which the hydrocarbons withdrawn from the separators are replaced by fresh or returned hydrocarbons, unreacted hydrocarbons driven off in the distillation being returned wholly or in part into the series of reactors.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0051530 | 1967-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1217234A true GB1217234A (en) | 1970-12-31 |
Family
ID=7104687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2325/68A Expired GB1217234A (en) | 1967-02-15 | 1968-01-16 | PROCESS FOR THE PREPARATION OF 4,4'DIMETHYL-1,3-DIOXANE FROM i-BUTENE AND FORMALDEHYDE |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT276394B (en) |
BE (1) | BE710776A (en) |
DE (1) | DE1593851A1 (en) |
ES (1) | ES350433A1 (en) |
FR (1) | FR1559883A (en) |
GB (1) | GB1217234A (en) |
NL (1) | NL6801888A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109761950A (en) * | 2019-01-25 | 2019-05-17 | 浙江师范大学 | A method of preparing 4,4- dimethyl -1,3- dioxane |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2433634C2 (en) * | 1974-07-12 | 1982-07-08 | Volžskij zavod sintetičeskogo kaučuka, Volžskij, Volgogradskaja oblast' | Process for the preparation of 4,4-dimethyl-1,3-dioxane |
FR2490643A1 (en) * | 1980-09-19 | 1982-03-26 | Breiman Olga | Prodn. of 4,4-di:methyl-1,3-dioxan - from formaldehyde and isobutylene using alkyl or phenyl poly-sulphonic acid salt as catalyst |
-
1967
- 1967-02-15 DE DE19671593851 patent/DE1593851A1/en active Pending
-
1968
- 1968-01-16 GB GB2325/68A patent/GB1217234A/en not_active Expired
- 1968-01-18 AT AT51768A patent/AT276394B/en active
- 1968-02-09 NL NL6801888A patent/NL6801888A/xx unknown
- 1968-02-13 ES ES350433A patent/ES350433A1/en not_active Expired
- 1968-02-14 BE BE710776D patent/BE710776A/xx unknown
- 1968-02-15 FR FR1559883D patent/FR1559883A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109761950A (en) * | 2019-01-25 | 2019-05-17 | 浙江师范大学 | A method of preparing 4,4- dimethyl -1,3- dioxane |
Also Published As
Publication number | Publication date |
---|---|
ES350433A1 (en) | 1969-04-16 |
BE710776A (en) | 1968-08-14 |
NL6801888A (en) | 1968-08-16 |
AT276394B (en) | 1969-11-25 |
FR1559883A (en) | 1969-03-14 |
DE1593851A1 (en) | 1970-09-17 |
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