GB645134A - Improvements in and relating to the production of phosphoric esters - Google Patents

Improvements in and relating to the production of phosphoric esters

Info

Publication number
GB645134A
GB645134A GB21968/47A GB2196847A GB645134A GB 645134 A GB645134 A GB 645134A GB 21968/47 A GB21968/47 A GB 21968/47A GB 2196847 A GB2196847 A GB 2196847A GB 645134 A GB645134 A GB 645134A
Authority
GB
United Kingdom
Prior art keywords
ether
ethyl
metaphosphate
phosphoric acid
organic
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
GB21968/47A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB645134A publication Critical patent/GB645134A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/06Phosphorus compounds without P—C bonds
    • C07F9/08Esters of oxyacids of phosphorus

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Neutral esters of phosphoric acid are manufactured by reacting phosphorous pentoxide or an organic metaphosphate or pyrophosphate with excess of an organic ether free from polar substituents, at a temperature of 65-180 DEG C. (preferably 140-180 DEG C.). The reaction may be carried out in the absence of a catalyst, but improved yields are obtained by the use of an esterification catalyst, e.g. iodine, ferric chloride, sulphuric acid, phosphoric acid or cobaltous acetate. When using phosphorus pentoxide, the molar ratio of ether thereto is preferably between 3 : 1 and 10 : 1. The alternative starting materials may be, for example, ethyl metaphosphate or tetraethylpyrophosphate, or the residue from a previous reaction using phosphorus pentoxide. The ether may be an alkyl ether (simple or mixed) or an aryl ether, e.g. diethyl, di-n-propyl or di-isobutyl ether, methyl ethyl ether (which yields a mixture of diethyl methyl and dimethyl ethyl phosphates), or diphenyl ether. Examples describe the preparation of triphenyl and triethyl phosphates. The products are useful as plasticizers, spinning lubricants, antistatic agents, catalysts or surface-active agents.
GB21968/47A 1943-12-08 1947-12-08 Improvements in and relating to the production of phosphoric esters Expired GB645134A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US271925XA 1943-12-08 1943-12-08
US221146XA 1946-11-22 1946-11-22
US270247XA 1947-02-27 1947-02-27

Publications (1)

Publication Number Publication Date
GB645134A true GB645134A (en) 1950-10-25

Family

ID=27361793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21968/47A Expired GB645134A (en) 1943-12-08 1947-12-08 Improvements in and relating to the production of phosphoric esters

Country Status (3)

Country Link
CH (1) CH271925A (en)
FR (1) FR982990A (en)
GB (1) GB645134A (en)

Also Published As

Publication number Publication date
CH271925A (en) 1950-11-30
FR982990A (en) 1951-06-18

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