Patenton — panteon of patents

(19)

RU

(11)

2 131 433

(13)

C1

(51)

IPC

(21) (22)

Application

97108838/04, 1997-05-23

(22)

Actual filing date

1997-05-23

(45)

Published

1999-06-10

(72)

Inventor

Sarbash F.S.Tarasov S.G.Kashtanova G.L.Shkuro A.G.Panasjuk A.L.Maslennikov G.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF PREPARING SOLID DISODIUM SALT OF NITRILOTRIMETHYLPHOSPHONIC ACID Russian patent published in 1999 - IPC

Abstract RU 2131433 C1

FIELD: chemical industry. SUBSTANCE: method comprises neutralizing nitrilotrimethylphosphonic acid solution with sodium hydroxide to adjust pH to 2.5-3.4. Concentration of nitrilotrimethylphosphonic acid in reaction compound is 30-50 wt %. Method makes it possible to prepare nitrilomethylphosphonic acid disodium salt in crystalline form. Main substance content is 97-99% and yield is about 75% of theory. EFFECT: more efficient preparation method. 3 cl, 7 ex, 2 tbl

Similar patents RU2131433C1

Title Year Author Number
METHOD OF PREPARING SOLID TRISODIUM SALT OF NITRILOTRIMETHYL PHOSPHONIC ACID 2000
  • Lezhenin V.V.
  • Sarbash F.S.
  • Tarasov S.G.
  • Prudovskij M.A.
  • Panasjuk A.L.
  • Trofimov V.N.
 RU2175656C2
METHOD FOR PREPARING CRYSTALLINE NITRILOTRIMETHYLPHOSPHONIC ACID DISODIUM SALT MONOHYDRATE 2005
  • Efremov Anatolij Il'Ich
  • Sarbash Fedor Semenovich
  • Tarasov Sergej Germanovich
  • Prudovskij Mikhail Anatol'Evich
  • Utkin Vladimir Ivanovich
 RU2293087C1
METHOD OF PRODUCING MINERAL SALT DEPOSITION INHIBITOR 2008
  • Kurgaeva Svetlana Nikolaevna
 RU2378281C1
METHOD OF OBTAINING MONOETHANOLAMINE SALTS OF PHOSPHONIC ACIDS 2012
  • Petrov Sergej Jur'Evich
 RU2529194C2
METHOD OF PREPARING INHIBITOR OF MINERAL SALT DEPOSITS 1998
  • Tsirul'Nikova N.V.
  • Driker B.N.
  • Rudomino M.V.
  • Krutikova N.I.
  • Konopleva T.P.
  • Lezhenin V.V.
  • Efremov A.I.
  • Maslennikov G.A.
  • Prudovskij M.A.
  • Van'Kov A.L.
 RU2133751C1
METHOD FOR PRODUCTION OF INHIBITOR OF DEPOSITS OF MINERAL SALTS 1987
  • Glinskij Ju.D.
  • Bogatyrev I.L.
  • Kolesnikov S.E.
  • Shachnev V.T.
  • Loskutov L.G.
  • Nechepurnoj V.D.
  • Shal' A.A.
  • Kljuev V.P.
  • Sokolov V.V.
  • Zotov S.B.
 RU2107688C1
METHOD FOR UTILIZING WASTES FROM PRODUCTION NITRILOTRIMETHYLPHOSPHONIC ACID 0
  • Rudomino Marianna Vasilevna
  • Krutikova Nataliya Ivanovna
  • Kolova Evgeniya Konstantinovna
  • Dyatlova Nina Mikhajlovna
  • Lezhenin Valerij Vasilevich
  • Azhigaliev Gauaz Kabdyrovich
  • Safiulina Aleksandra Vladimirovna
  • Reshetnikov Pavel Yakovlevich
  • Baranov Yurij Ivanovich
  • Malinin Nikolaj Kalinnikovich
 SU1079652A1
METHOD OF PREPARING HYDROXYETHYLIDENE DIPHOSPHONIC ACID FROM PHOSPHORUS- CONTAINING WASTE OF HIGHER FATTY ACID CHLORIDE PRODUCTION 2000
  • Suchkov A.V.
  • Mudryj F.V.
  • Mil'Gotin I.M.
  • Bol'Shova I.V.
  • Bogach E.V.
  • Kuznetsov A.A.
  • Badmaev A.V.
  • Komova S.N.
  • Kostrjukova M.N.
 RU2173321C1
METHOD FOR PRODUCTION OF OXYETHYLIDENEDIPHOSPHONIC ACID FROM HIGHER FATTY ACID HALIDE PRODUCTION WASTE 2000
  • Badmaev A.V.
  • Mudryj F.V.
  • Suchkov A.V.
  • Mil'Gotin I.M.
  • Bogach E.V.
  • Kuznetsov A.A.
  • Bol'Shova I.V.
 RU2178793C1
COMPLEX REAGENT FOR GROUTING MORTARS 2000
  • Kazakov V.A.
  • Kuksov A.K.
  • Novokhatskij D.F.
  • Rjabova L.I.
 RU2179231C2

RU 2 131 433 C1

Authors

Sarbash F.S.

Tarasov S.G.

Kashtanova G.L.

Shkuro A.G.

Panasjuk A.L.

Maslennikov G.A.

Dates

1999-06-10—Published

1997-05-23—Filed

download Download PDF read Similar patents