FR2421893A1 - Propylene oxide prepn. from propylene - involves (oxy)chlorination, hydrating prod. then saponifying with caustic soda - Google Patents

Propylene oxide prepn. from propylene - involves (oxy)chlorination, hydrating prod. then saponifying with caustic soda

Info

Publication number
FR2421893A1
FR2421893A1 FR7733855A FR7733855A FR2421893A1 FR 2421893 A1 FR2421893 A1 FR 2421893A1 FR 7733855 A FR7733855 A FR 7733855A FR 7733855 A FR7733855 A FR 7733855A FR 2421893 A1 FR2421893 A1 FR 2421893A1
Authority
FR
France
Prior art keywords
propylene
hydrating
caustic soda
saponifying
prod
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.)
Granted
Application number
FR7733855A
Other languages
French (fr)
Other versions
FR2421893B1 (en
Inventor
Pierre Roussel
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.)
Naphtachimie SA
Original Assignee
Naphtachimie SA
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 Naphtachimie SA filed Critical Naphtachimie SA
Priority to FR7733855A priority Critical patent/FR2421893A1/en
Publication of FR2421893A1 publication Critical patent/FR2421893A1/en
Application granted granted Critical
Publication of FR2421893B1 publication Critical patent/FR2421893B1/fr
Granted 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/15—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination
    • C07C17/152—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination of hydrocarbons
    • C07C17/156—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination of hydrocarbons of unsaturated hydrocarbons
    • 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
    • C07C29/03—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2
    • C07C29/04—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
    • C07C29/05—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds with formation of absorption products in mineral acids and their hydrolysis
    • C07C29/06—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds with formation of absorption products in mineral acids and their hydrolysis the acid being sulfuric acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Epoxy Compounds (AREA)

Abstract

Propylene oxide (I) is prepd. by chlorinating and for oxychlorinating propylene, pref. at 450-550 degrees C; then hydrating the monochloropropylene to give a 100-500 g/l aq. soln. of propylene glycol monohydrin (II); and finally saponifying with a base to give (I). The process uses only half the chlorine and base used normally. The saponification yield is improved with less waste by products produced. Because conc. solns. of (II) are used, smaller bulk is required, and so plant investment costs are lower. Partic., using caustic soda for the saponification, this concentration of the waste salt liquors is such that they can be recycled for chlorine production by electrolysis.
FR7733855A 1977-11-10 1977-11-10 Propylene oxide prepn. from propylene - involves (oxy)chlorination, hydrating prod. then saponifying with caustic soda Granted FR2421893A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7733855A FR2421893A1 (en) 1977-11-10 1977-11-10 Propylene oxide prepn. from propylene - involves (oxy)chlorination, hydrating prod. then saponifying with caustic soda

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7733855A FR2421893A1 (en) 1977-11-10 1977-11-10 Propylene oxide prepn. from propylene - involves (oxy)chlorination, hydrating prod. then saponifying with caustic soda

Publications (2)

Publication Number Publication Date
FR2421893A1 true FR2421893A1 (en) 1979-11-02
FR2421893B1 FR2421893B1 (en) 1980-08-22

Family

ID=9197470

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733855A Granted FR2421893A1 (en) 1977-11-10 1977-11-10 Propylene oxide prepn. from propylene - involves (oxy)chlorination, hydrating prod. then saponifying with caustic soda

Country Status (1)

Country Link
FR (1) FR2421893A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109369575A (en) * 2018-11-15 2019-02-22 航锦科技股份有限公司 A kind of clean preparation method of caustic soda saponification legal system propylene oxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109369575A (en) * 2018-11-15 2019-02-22 航锦科技股份有限公司 A kind of clean preparation method of caustic soda saponification legal system propylene oxide

Also Published As

Publication number Publication date
FR2421893B1 (en) 1980-08-22

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Legal Events

Date Code Title Description
ST Notification of lapse