GB981252A - Process for the preparation of acylation products of phosphorous acid - Google Patents

Process for the preparation of acylation products of phosphorous acid

Info

Publication number
GB981252A
GB981252A GB2480262A GB2480262A GB981252A GB 981252 A GB981252 A GB 981252A GB 2480262 A GB2480262 A GB 2480262A GB 2480262 A GB2480262 A GB 2480262A GB 981252 A GB981252 A GB 981252A
Authority
GB
United Kingdom
Prior art keywords
acid
water
acids
metal salts
products
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
GB2480262A
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of GB981252A publication Critical patent/GB981252A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids RP(=O)(OH)2; Thiophosphonic acids, i.e. RP(=X)(XH)2 (X = S, Se)
    • C07F9/3804—Phosphonic acids RP(=O)(OH)2; Thiophosphonic acids, i.e. RP(=X)(XH)2 (X = S, Se) not used, see subgroups
    • C07F9/3839—Polyphosphonic acids
    • C07F9/386—Polyphosphonic acids containing hydroxy substituents in the hydrocarbon radicals
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus

Abstract

An acylation product of phosphorous acid or its alkali metal salts with general formula <FORM:0981252/C1/1> prevents calcium carbonate precipitation in water-softening procedures.ALSO:An acylation product of phosphorous acid containing at least two atoms of phosphorus in the molecule is obtained by reacting a carboxylic acid and water which are present in a total molar proportion of at least 2.5 and preferably at least 3 with one mol. proportion of phosphorus trichloride, the amount of water accounting for up to 1.6 mol. proportions if the acid is monocarboxylic and up to 2.1 mol. proportions if the acid is dicarboxylic and then heating the reaction mixture to between 80 DEG and 200 DEG C. In carrying out the reaction phosphorus trichloride is suitably added to a mixture of the acid, e.g. acetic acid, and water while stirring and, if necessary, cooling, but it is also possible to add the acid and water to the trichloride or to add water to a mixture of the acid and the trichloride or the reverse. The process may be carried out in two stages, the first stage being carried out at between 0 DEG and 80 DEG C. and the second stage at between 80 DEG and 200 DEG C., e.g. between 100 DEG and 160 DEG C. Specified acids are acetic acid, C3-C20 aliphatic monocarboxylic acids, aromatic mono-carboxylic acids e.g. benzoic acid, and C3-C10 aliphatic dicarboxylic acids. The reaction product may be recovered from the reaction mixture by separating excess acylating agent preferably by distillation under reduced pressure and may be purified by recrystallization or may be treated with water at a temperature above 60 DEG C. The acidic product may be converted to the corresponding alkali metal salts, e.g. by neutralization with aqueous or alcoholic caustic alkali solutions. The products from an acid RCOOH wherein R is alkyl, have the general formula <FORM:0981252/C2/1> Examples are given in which the acids used are acetic, propionic, caproic, lauric, benzoic and adipic acids, respectively. The acylation products form complexes with polyvalent metal salts and the products or their alkali metal salts may be used for the prevention of calcium carbonate precipitation in the softening of water and also for the stabilization of per compounds. When the products contain long chains they are suitable as wetting agents.
GB2480262A 1961-07-03 1962-06-28 Process for the preparation of acylation products of phosphorous acid Expired GB981252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH43035A DE1148235B (en) 1961-07-03 1961-07-03 Process for the preparation of acylation products of phosphorous acid with at least 2 phosphorus atoms in the molecule

Publications (1)

Publication Number Publication Date
GB981252A true GB981252A (en) 1965-01-20

Family

ID=7155064

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2480262A Expired GB981252A (en) 1961-07-03 1962-06-28 Process for the preparation of acylation products of phosphorous acid

Country Status (5)

Country Link
BE (1) BE619620A (en)
CH (1) CH418332A (en)
DE (1) DE1148235B (en)
GB (1) GB981252A (en)
NL (2) NL132375C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400176A (en) * 1965-11-15 1968-09-03 Procter & Gamble Propanepolyphosphonate compounds
US3400148A (en) * 1965-09-23 1968-09-03 Procter & Gamble Phosphonate compounds
US4267108A (en) 1977-10-07 1981-05-12 Henkel Kommanditgesellschaft Auf Aktien Hydroxyalkane diphosphonic acids
WO2015059287A1 (en) 2013-10-25 2015-04-30 Straitmark Holding Ag Method for the synthesis of alkane-1-hydroxy-1,1-diphosphonic acid
WO2015059288A1 (en) 2013-10-25 2015-04-30 Straitmark Holding Ag Method for the synthesis of ethane-1-hydroxy-1,1-diphosphonic acid

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060546A (en) * 1961-07-03 1977-11-29 Henkel Kommanditgesellschaft Auf Aktien Process for the manufacture of acylation products of phosphorous acid
DE1248654B (en) * 1964-11-11 1967-08-31 Albright & Wilson (Mf g) Limited, Oldbury, Warwickshire (Großbritannien) Process for the production of phosphonic acids and their salts
US3504018A (en) * 1966-12-19 1970-03-31 Monsanto Co Process for preparing phosphonic acids
US3484480A (en) * 1968-02-23 1969-12-16 Procter & Gamble Process for separating ethane - 1 - hydroxy-1,1-diphosphonic acid from a solution of it in an organic solvent which also contains oxyacids of phosphorus
KR101422910B1 (en) * 2012-04-30 2014-07-23 삼성전기주식회사 Optical system for camera

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400148A (en) * 1965-09-23 1968-09-03 Procter & Gamble Phosphonate compounds
US3400176A (en) * 1965-11-15 1968-09-03 Procter & Gamble Propanepolyphosphonate compounds
US4267108A (en) 1977-10-07 1981-05-12 Henkel Kommanditgesellschaft Auf Aktien Hydroxyalkane diphosphonic acids
WO2015059287A1 (en) 2013-10-25 2015-04-30 Straitmark Holding Ag Method for the synthesis of alkane-1-hydroxy-1,1-diphosphonic acid
WO2015059288A1 (en) 2013-10-25 2015-04-30 Straitmark Holding Ag Method for the synthesis of ethane-1-hydroxy-1,1-diphosphonic acid
US9777027B2 (en) 2013-10-25 2017-10-03 Straitmark Holding Ag Method for the synthesis of ethane-1-hydroxy-1,1-diphosphonic acid

Also Published As

Publication number Publication date
BE619620A (en) 1963-01-02
DE1148235B (en) 1963-05-09
NL132375C (en)
NL280425A (en)
CH418332A (en) 1966-08-15

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