GB425973A - Improvements in or relating to the manufacture of keten - Google Patents

Improvements in or relating to the manufacture of keten

Info

Publication number
GB425973A
GB425973A GB1779933A GB1779933A GB425973A GB 425973 A GB425973 A GB 425973A GB 1779933 A GB1779933 A GB 1779933A GB 1779933 A GB1779933 A GB 1779933A GB 425973 A GB425973 A GB 425973A
Authority
GB
United Kingdom
Prior art keywords
reaction chamber
vapour
passing
contact
acetone
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
GB1779933A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB1779933A priority Critical patent/GB425973A/en
Publication of GB425973A publication Critical patent/GB425973A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/87—Preparation of ketenes or dimeric ketenes
    • C07C45/88—Preparation of ketenes or dimeric ketenes from ketones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Ketene is produced by passing the vapour of a compound such as acetone through a reaction chamber at at least 675 DEG C., preferably 750--850 DEG C., the time of contact of the vapour with the high temperature zone being less than 1 second, preferably 0,015--0,05 second, the vapours issuing from the reaction chamber being immediately cooled. The cooling is preferably to below 600 DEG C. and may be effected by contact with liquid acetone or by passing into a water-cooled condenser. The reaction chamber may be of copper, bronze, silver, quartz, or sillimanite, but materials containing nickel and iron, as well as nickel chromium alloys, should be avoided. A copper tube of one-eighth inch internal diameter is preferred.
GB1779933A 1933-06-22 1933-06-22 Improvements in or relating to the manufacture of keten Expired GB425973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1779933A GB425973A (en) 1933-06-22 1933-06-22 Improvements in or relating to the manufacture of keten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1779933A GB425973A (en) 1933-06-22 1933-06-22 Improvements in or relating to the manufacture of keten

Publications (1)

Publication Number Publication Date
GB425973A true GB425973A (en) 1935-03-25

Family

ID=10101416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1779933A Expired GB425973A (en) 1933-06-22 1933-06-22 Improvements in or relating to the manufacture of keten

Country Status (1)

Country Link
GB (1) GB425973A (en)

Similar Documents

Publication Publication Date Title
GB425973A (en) Improvements in or relating to the manufacture of keten
GB520434A (en) Improved method of and apparatus for sublimating materials at a low pressure
GB590274A (en) Improvements in or relating to the production of alkali metals or alloys thereof
GB413709A (en) Improvements in or relating to process of and apparatus for making ketene
Madgin et al. CCCXLIV.—The melting-point (solidus) curve for mixtures of potassium nitrate and sodium nitrate
GB446050A (en) Burner for liquid fuels
US2376748A (en) Method and apparatus for manufacturing ketene
GB497580A (en) Improvements in or relating to heat transmitting media
Bradfield LI.—The chlorination of anilides. Part II. The decomposition of N-chloroacetanilide by heat
US1533712A (en) Steel alloy
GB484660A (en) Improvements in the manufacture and production of unsaturated hydrocarbons
GB575530A (en) Improvements in or relating to the production of trichlorethylene
GB489800A (en) Improvements in processes for producing protective coatings on metals of the iron group and their alloys
GB479842A (en) Improvements in or relating to the preparation of magnesium
SU120225A1 (en) Cast iron for the manufacture of boilers and pits
Ullirch Heat transmission by radiation from non-luminous gases: experimental study of carbon monoxide
GB436133A (en) Process for the preparation of asymmetric dichlorethylene or 1 - 1 dichlorethene
GB419019A (en) Improvements in or relating to a rotary drum furnace
GB427233A (en) Apparatus for the fractional condensation of metal vapours
GB389963A (en) A process of producing chromium
GB469563A (en) Improvements in or relating to the manufacture of hydrocyanic acid
GB440788A (en) Improved corrosion-resistant alloys
GB510196A (en) Improved apparatus for the thermal production of magnesium
GB458892A (en) Improvements in processes for the manufacture of titanium tetrachloride
GB413606A (en) Process of and apparatus for the continuous production of metallic magnesium by thermal reduction