SU687079A1 - Method of obtaining alkylphosphonic acids - Google Patents
Method of obtaining alkylphosphonic acidsInfo
- Publication number
- SU687079A1 SU687079A1 SU772494904A SU2494904A SU687079A1 SU 687079 A1 SU687079 A1 SU 687079A1 SU 772494904 A SU772494904 A SU 772494904A SU 2494904 A SU2494904 A SU 2494904A SU 687079 A1 SU687079 A1 SU 687079A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acid
- mol
- benzene
- dioxane
- added
- Prior art date
Links
Description
(54) СПОСОБ ПОЛУЧЕНИЯ АЛКИЛФОСФОНИСТЫХ КИСЛОТ(54) METHOD FOR OBTAINING ALKYLPHOSPHONIC ACIDS
1one
Изобретение относитс к химии фосфорорганических соединений с С-Р-св зью, а именно к способу получени алкилфосфонистых кислот обва1ей формулы:This invention relates to the chemistry of organophosphorus compounds with a C-P bond, and specifically to a process for the preparation of alkylphosphonic acids of the formula:
ОНHE
«- “-
где R - алкил, которые могут найти применение в качестве поверхностноактивных веществ, ингибиторов, коррозии , пластификаторов, добавок к смазочным маслам и полимерам дл придани огнестойкости.where R is alkyl, which can be used as surface active substances, inhibitors, corrosion, plasticizers, lubricant additives and polymers for imparting fire resistance.
Известен способ получени фосфонистых кислот окислением первичных фосфинов перекисью водорода при нагревании до 1. A known method for producing phosphonous acids by oxidizing primary phosphines with hydrogen peroxide when heated to 1.
По этому способу в качестве побочного продукта образуетс фосфонова кислота.In this method, phosphonic acid is formed as a by-product.
Наиболее близким по технической сущности и достигаемому результату к предлагаемому вл етс способ получени алкилфосфонистых кислот, заключаетс в том, что фосфорноватистую кислоту присоедин ют к олёфинам в присутствии органических перекисей и серной кислоты при нагревании до 65-85с в среде органического растворит.ел в атмосфере инертного газа 2.The closest in technical essence and the achieved result to the proposed method is to obtain alkylphosphonic acids, is that hypophosphorous acid is attached to olefins in the presence of organic peroxides and sulfuric acid when heated to 65-85 with organic solvent in an inert atmosphere gas 2.
Недостатком этого способа вл етс продолжительность процесса (4-5 ч), а также тот:факт, что удаетс получить лишь смесь алкилфосфонистых и диалкилфосфиновых кислот, причем выде0 лить чистые алкилфосфонистые кислоты из смеси очень сложно,The disadvantage of this method is the duration of the process (4-5 hours), as well as the fact that it is possible to obtain only a mixture of alkylphosphonous and dialkylphosphonic acids, and it is very difficult to select pure alkylphosphonous acids from the mixture,
Целью изобретени вл етс упраце .ние процесса и повышение выхода целевого продукта.The aim of the invention is to process the process and increase the yield of the target product.
5five
Поставленна цель достигаетс описываемьм способом получени алкилфосфонистых кислот, который заключаетс в тем, что фосфорноватистую кислоту присоедин ют к олёфинам в при0 сутствии перекисного инициатора (перекиси водорода) и минеральной кислоты при нагревании, желательно до 55-75 с в среде органического растворител в атмосфере инертного газа. 5 Отличительным признаком способа . вл етс использование в качестве перекисного инициатора - перекиси водорода.The goal is achieved by the method of obtaining alkylphosphonic acids, which consists in the fact that hypophosphorous acid is attached to olefins in the presence of a peroxide initiator (hydrogen peroxide) and mineral acid when heated, preferably to 55-75 s in an organic solvent medium in an inert gas atmosphere . 5 The hallmark of the method. is the use of hydrogen peroxide as a peroxide initiator.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772494904A SU687079A1 (en) | 1977-05-27 | 1977-05-27 | Method of obtaining alkylphosphonic acids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772494904A SU687079A1 (en) | 1977-05-27 | 1977-05-27 | Method of obtaining alkylphosphonic acids |
Publications (1)
Publication Number | Publication Date |
---|---|
SU687079A1 true SU687079A1 (en) | 1979-09-25 |
Family
ID=20712686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772494904A SU687079A1 (en) | 1977-05-27 | 1977-05-27 | Method of obtaining alkylphosphonic acids |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU687079A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0794189A1 (en) * | 1996-03-04 | 1997-09-10 | Hoechst Aktiengesellschaft | Salts of phosponous acids and their use as flame-retardants in plastics-materials |
-
1977
- 1977-05-27 SU SU772494904A patent/SU687079A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0794189A1 (en) * | 1996-03-04 | 1997-09-10 | Hoechst Aktiengesellschaft | Salts of phosponous acids and their use as flame-retardants in plastics-materials |
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