GB998976A - Production of oxiranes - Google Patents

Production of oxiranes

Info

Publication number
GB998976A
GB998976A GB3980462A GB3980462A GB998976A GB 998976 A GB998976 A GB 998976A GB 3980462 A GB3980462 A GB 3980462A GB 3980462 A GB3980462 A GB 3980462A GB 998976 A GB998976 A GB 998976A
Authority
GB
United Kingdom
Prior art keywords
hydroxide
contacting
earth metal
alkaline earth
aqueous
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
GB3980462A
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass 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 Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Publication of GB998976A publication Critical patent/GB998976A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D301/00—Preparation of oxiranes
    • C07D301/02—Synthesis of the oxirane ring
    • C07D301/24—Synthesis of the oxirane ring by splitting off HAL—Y from compounds containing the radical HAL—C—C—OY
    • C07D301/26—Y being hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B60C5/18—Sectional casings, e.g. comprising replaceable arcuate parts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Epoxy Compounds (AREA)

Abstract

Aqueous slurries of alkaline earth metal hydroxides, in which the hydroxide has a Blaine surface area (ASTM C204-55) of at least 20,000 sq. cm. per g., are obtained by slaking the alkaline earth metal oxide in water above 4 DEG C. using a ratio of up to 16.6 parts of water per part of oxide.ALSO:Oxiranes which are capable of being volatilized by steam are prepared by contacting a halohydrin, which is water-soluble at least to the extent of 0.3% by weight, with an aqueous slurry of an alkaline earth metal hydroxide, the said hydroxide having a Blaine surface area of at least 2000 sq. cm. per g. Suitable halohydrins are those containing 2-6 carbon atoms, particularly glycerol dichlorohydrins, especially in dilute aqueous solution, e.g. 1-10% by weight, such as are obtained by contacting an olefin with chlorine gas in an aqueous medium. The preferred hydroxide is calcium hydroxide. The reaction may be effected by contacting the aqueous slurry of hydroxide with an aqueous solution of the chlorohydrin to form the feed for a distillation column in which the feed is countercurrently contacted with steam to form and remove the oxirane. Examples describe the preparation of epichlorhydrin, propylene oxide and a mixture of propylene and ethylene oxides.
GB3980462A 1961-10-23 1962-10-22 Production of oxiranes Expired GB998976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14706761A 1961-10-23 1961-10-23

Publications (1)

Publication Number Publication Date
GB998976A true GB998976A (en) 1965-07-21

Family

ID=22520191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3980462A Expired GB998976A (en) 1961-10-23 1962-10-22 Production of oxiranes

Country Status (5)

Country Link
BE (1) BE622988A (en)
CH (1) CH408894A (en)
DE (1) DE1232939B (en)
FR (1) FR1344345A (en)
GB (1) GB998976A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109705062A (en) * 2019-01-11 2019-05-03 吴剑华 A kind of chlorohydrination epoxides production technology of no solid slag and by-product chloropropane
CN111732559A (en) * 2020-06-17 2020-10-02 吴剑华 Chlorohydrin method epoxide production method of cyclic calcium carbonate dehydrochlorination

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109705062A (en) * 2019-01-11 2019-05-03 吴剑华 A kind of chlorohydrination epoxides production technology of no solid slag and by-product chloropropane
CN111732559A (en) * 2020-06-17 2020-10-02 吴剑华 Chlorohydrin method epoxide production method of cyclic calcium carbonate dehydrochlorination

Also Published As

Publication number Publication date
CH408894A (en) 1966-03-15
FR1344345A (en) 1963-11-29
DE1232939B (en) 1967-01-26
BE622988A (en) 1963-01-16

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