GB686402A - Manufacture of glycols - Google Patents

Manufacture of glycols

Info

Publication number
GB686402A
GB686402A GB6152/50A GB615250A GB686402A GB 686402 A GB686402 A GB 686402A GB 6152/50 A GB6152/50 A GB 6152/50A GB 615250 A GB615250 A GB 615250A GB 686402 A GB686402 A GB 686402A
Authority
GB
United Kingdom
Prior art keywords
give
reacted
epoxy
styrene
sodium hydroxide
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
GB6152/50A
Inventor
Donald Peter Young
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co Ltd
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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB6152/50A priority Critical patent/GB686402A/en
Priority to FR1033274D priority patent/FR1033274A/en
Priority to BE501794A priority patent/BE501794A/en
Publication of GB686402A publication Critical patent/GB686402A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
    • F26B17/1408—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the gas being supplied and optionally extracted through ducts extending into the moving stack of material
    • F26B17/1416—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the gas being supplied and optionally extracted through ducts extending into the moving stack of material the ducts being half open or perforated and arranged horizontally
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/09—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
    • C07C29/10—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
    • C07C29/103—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes of cyclic ethers
    • C07C29/106—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes of cyclic ethers of oxiranes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12C—BEER; PREPARATION OF BEER BY FERMENTATION; PREPARATION OF MALT FOR MAKING BEER; PREPARATION OF HOPS FOR MAKING BEER
    • C12C11/00—Fermentation processes for beer
    • C12C11/02—Pitching yeast

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Food Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Mycology (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Epoxy Compounds (AREA)

Abstract

Glycols are manufactured by heating an epoxide of formula <FORM:0686402/IV (b)/1> in which R1 and R2 are alkyl, aryl or alicyclic hydrocarbon radicals or R1 is an aryl radical and R2 is hydrogen in intimate contact with an aqueous alkaline solution at a temperature in the range 90 DEG to 200 DEG C. R1 and R2 may be, for instance, methyl, ethyl, propyl, butyl, isobutyl, beta-di-isobutyl, neopentyl, amyl, phenyl, naphthyl or cyclohexyl radicals. The reaction may be carried out in a solvent, e.g. an aliphatic alcohol and may be carried out continuously or batchwise. The concentration of alkali should preferably be sufficient to maintain a pH of more than 12. Suitable alkalies are sodium hydroxide, potassium hydroxide, barium hydroxide, sodium carbonate, potassium carbonate and sodium bicarbonate. The glycol produced may be separated by any suitable means, e.g. by filtration or solvent extraction. Suitable epoxides for starting materials are, for example, 1,2-epoxy-2,4,4-trimethyl pentane; the epoxides derived from the co-dimer of n-butene and isobutene, tri-isobutylene, styrene, alpha-methyl-styrene and alpha-ethyl-styrene. These may be obtained by the oxidation of the corresponding olefinic compounds. In the examples: (a) 1,2-epoxy-2,4,4-trimethylpentane is reacted with caustic soda to give 2,4,4-trimethyl-pentane-1 : 2 diol; (b) 1 : 2 - epoxy - 2,4,4 - trimethylpentane is reacted with sodium carbonate to give the corresponding diol; (c) 1 : 2-epoxy-1-phenylethane (styrene) is reacted with sodium hydroxide to give 1-phenylethane-1,2-diol; (d) a fraction obtained by the oxidation of n-butene-isobutene "co-dimer" is reacted with sodium hydroxide to give the corresponding glycols; (e) a fraction obtained by the oxidation of tri-isobutylene is reacted with sodium hydroxide to give the corresponding glycols; (f) the product obtained by the oxidation of a - methyl styrene, containing 1,2 - epoxy - 2-phenylpropane is heated with sodium hydroxide to give 2-phenyl-propane-1,2-diol. Specification 682,067 is referred to.
GB6152/50A 1950-03-11 1950-03-11 Manufacture of glycols Expired GB686402A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB6152/50A GB686402A (en) 1950-03-11 1950-03-11 Manufacture of glycols
FR1033274D FR1033274A (en) 1950-03-11 1951-03-01 Process for preparing glycols
BE501794A BE501794A (en) 1950-03-11 1951-03-10 MANUFACTURING OF GLYCOLS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6152/50A GB686402A (en) 1950-03-11 1950-03-11 Manufacture of glycols

Publications (1)

Publication Number Publication Date
GB686402A true GB686402A (en) 1953-01-21

Family

ID=9809361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6152/50A Expired GB686402A (en) 1950-03-11 1950-03-11 Manufacture of glycols

Country Status (3)

Country Link
BE (1) BE501794A (en)
FR (1) FR1033274A (en)
GB (1) GB686402A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2109453C3 (en) * 1971-02-27 1974-01-10 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Process for the production of vicinal glycols

Also Published As

Publication number Publication date
FR1033274A (en) 1953-07-09
BE501794A (en) 1952-06-06

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