FR2233852A5 - 4,4-dimethyldioxane -1,3-prepn - using recycled aq formaldehyde phase - Google Patents

4,4-dimethyldioxane -1,3-prepn - using recycled aq formaldehyde phase

Info

Publication number
FR2233852A5
FR2233852A5 FR7032405A FR7032405A FR2233852A5 FR 2233852 A5 FR2233852 A5 FR 2233852A5 FR 7032405 A FR7032405 A FR 7032405A FR 7032405 A FR7032405 A FR 7032405A FR 2233852 A5 FR2233852 A5 FR 2233852A5
Authority
FR
France
Prior art keywords
recycled
dimethyldioxane
prepn
phase
hcho
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
Application number
FR7032405A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INST NEFTECHIMICHESKOGO SINTEZ
Original Assignee
INST NEFTECHIMICHESKOGO SINTEZ
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by INST NEFTECHIMICHESKOGO SINTEZ filed Critical INST NEFTECHIMICHESKOGO SINTEZ
Priority to FR7032405A priority Critical patent/FR2233852A5/en
Application granted granted Critical
Publication of FR2233852A5 publication Critical patent/FR2233852A5/en
Expired legal-status Critical Current

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)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

- 1,3 is prepd. by condensation of isobutylene + HCHO in aq. soln. in presence of H2SO4. The aq. phase is recycled, the HCHO concn. being returned to the initial 30-60% after removal of the phase from the reaction zone by contact with gaseous HCHO.
FR7032405A 1970-09-07 1970-09-07 4,4-dimethyldioxane -1,3-prepn - using recycled aq formaldehyde phase Expired FR2233852A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7032405A FR2233852A5 (en) 1970-09-07 1970-09-07 4,4-dimethyldioxane -1,3-prepn - using recycled aq formaldehyde phase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7032405A FR2233852A5 (en) 1970-09-07 1970-09-07 4,4-dimethyldioxane -1,3-prepn - using recycled aq formaldehyde phase

Publications (1)

Publication Number Publication Date
FR2233852A5 true FR2233852A5 (en) 1975-01-10

Family

ID=9060961

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7032405A Expired FR2233852A5 (en) 1970-09-07 1970-09-07 4,4-dimethyldioxane -1,3-prepn - using recycled aq formaldehyde phase

Country Status (1)

Country Link
FR (1) FR2233852A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000408A1 (en) * 1979-07-31 1981-02-19 S Ogorodnikov Method of obtaining alkyl dioxanes-1,3
FR2480282A1 (en) * 1980-04-10 1981-10-16 Ogorodnikov Sergei Alkyl-dioxan prodn. from olefin(s) and formaldehyde - with recycle of aq. phase using conc. liq. formaldehyde for make=up

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000408A1 (en) * 1979-07-31 1981-02-19 S Ogorodnikov Method of obtaining alkyl dioxanes-1,3
FR2480282A1 (en) * 1980-04-10 1981-10-16 Ogorodnikov Sergei Alkyl-dioxan prodn. from olefin(s) and formaldehyde - with recycle of aq. phase using conc. liq. formaldehyde for make=up

Similar Documents

Publication Publication Date Title
ZA715945B (en) A process for the manufacture of new plasticised melamine-formaldehyde condensates
FR2233852A5 (en) 4,4-dimethyldioxane -1,3-prepn - using recycled aq formaldehyde phase
CA969125A (en) Distillation process for recovering substantially anhydrous formic acid from aqueous solutions
FR2198930A1 (en) Alkyl-nitro-halobenzoates - by nitration of halobenzoates with nitric acid sulphuric acid mixts in improved yields
IL36516A0 (en) Process for the manufacture of 2,2-disubstituted cycloalkene-1,3-diones
NL154717B (en) PROCESS FOR RECOVERING ISOBUTENE FROM A GASEOUS STREAM, CONTAINING IN ADDITION TO ISOBUTENE, T-BUTANOL, ISOBUTENE OLIGOmers, DILUTED SULFURIC ACID AND WATER.
BE779060A (en) 2,2,4-trimethyl 3-hydroxypentyl isobutyrate - by catalytic condensation of isobutyraldehyde in presence of water
GB1098465A (en) Production of carboxylic acids
ZA713334B (en) Process for the manufacture of quinoxaline 1,4-dioxides
GB1025648A (en) Production of pentaerythritol and dipentaerythritol
FR2085992A1 (en) Purifying polyhydantoins free from pheno-lics
GB1103876A (en) The manufacture of n-substituted acrylamides
ES300609A1 (en) Procedure for the polymerization of omega-laurinlactamo (Machine-translation by Google Translate, not legally binding)
FR2076090A1 (en) Salt solution concentration with two stage evaporation
FR1438234A (en) Process for the production of cyclopentane-1, 3-diones substituted in position 2.
ES382644A1 (en) PROCESS FOR THE MANUFACTURE OF beta -ACETOXYPIVALIC ALDEHYDE
NL7005893A (en) Dihydropyran by reaction of conjugated diene with formaldehy
BE749542A (en) Dihydropyran by reaction of conjugated diene with formaldehy
GB1269806A (en) Production of monochlorodimethyl ether
GB1265012A (en)
FR2000591A1 (en) Reaction of branched unsatd alkenes with formaldehyde
GB1080950A (en) Process for the preparation of trioxane
BE617537A (en) Method for the bending of profiles having longitudinal moldings.
FR2082527A5 (en) Meta-thymol prodn
GB876966A (en) New thioglycollic acid derivative and process for the production thereof

Legal Events

Date Code Title Description
ST Notification of lapse