Patenton — panteon of patents

(19)

RU

(11)

2 057 128

(13)

C1

(51)

IPC

(21) (22)

Application

5040908/04, 1992-05-06

(22)

Actual filing date

1992-05-06

(45)

Published

1996-03-27

(72)

Inventor

Kochetkova L.I.Chumakov S.I.Ionin V.N.Rudenko A.A.Istomina L.I.Veterkhanov S.R.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

PROCESS FOR PREPARING CALCRUM ASCORBINATE Russian patent published in 1996 - IPC

Abstract RU 2057128 C1

FIELD: chemical industry. SUBSTANCE: the product: calcium ascorbinate. Reagent 1: 11-30 wt % aqueous ascorbic acid solution. Reagent 2: calcium carbonate or hydroxide. Reaction conditions: on heating at temperature of not higher than 60 C followed by treatment with carbon, separation of the precipitate and concentration of the filtrate to 50-60 wt %, addition of methanol or ethanol under agitation to the resulting concentrate prior to crystallization of calcium ascorbinate, and thee desired product is crystallized on cooling from +5 C to -10 C and is thereafter removed, washed and dried. EFFECT: more efficient preparation process. 4 cl, 1 tbl

Similar patents RU2057128C1

Title Year Author Number
METHOD OF PREPARING ALKALINE, EARTH-ALKALINE OR TRANSIENT METAL ASCORBATES 1995
  • Kochetkova L.I.
  • Chumakov S.I.
  • Gorbach L.A.
  • Kirsanov A.T.
  • Rudenko A.A.
  • Veterkhanov S.R.
 RU2078083C1
METHOD OF ISOLATION OF NICKEL SULFATE 1995
  • Kaplun R.Ja.
  • Ivonin V.P.
  • Romanova V.V.
  • Khusainov F.G.
  • Plekhanov K.A.
 RU2100279C1
METHOD OF HANDLING AQUEOUS MOTHER SOLUTION OBTAINED IN ISOLATION OF ASCORBIC ACID 1997
  • Zharkov A.S.
  • Belousov A.M.
  • Taber A.M.
  • Taranenko G.S.
  • Kozlova L.M.
  • Antonenko E.N.
 RU2126800C1
METHOD OF TREATMENT OF MOTHER LIQUID OBTAINED AT THE ISOLATION OF MEDICINAL ASCORBIC ACID 1990
  • Kochetkova L.I.
  • Chumakov S.I.
  • Pozdnjakova L.G.
  • Serdjuk N.V.
  • Rudenko A.A.
  • Skripin A.A.
  • Ionin V.N.
  • Serpukhovitin I.P.
 SU1823449A1
METHOD OF BLUE VITRIOL PRODUCING 1993
  • Trufanov V.A.
  • Baranov G.P.
  • Kaplun R.Ja.
  • Ivonin V.P.
  • Makarov Ju.A.
  • Romanova V.V.
 RU2071942C1
METHOD OF MEDICINAL ASCORBIC ACID PRODUCING 1997
  • Kochetkova L.I.
  • Roeva T.M.
  • Serdjuk N.V.
  • Kirsanov A.T.
  • Jashchenko P.G.
  • Zharikov R.D.
 RU2119486C1
METHOD FOR ISOLATION OF COPPER SULFATE 1994
  • Kaplun R.Ja.
  • Ivonin V.P.
  • Elkin M.I.
  • Romanova V.V.
  • Zimnitskij P.V.
  • Zimnitskij B.V.
 RU2065402C1
METHOD OF ISOLATION OF COPPER SULFATE FROM SULFATE SOLUTION 1995
  • Kaplun R.Ja.
  • Ivonin V.P.
  • Elkin M.I.
  • Romanova V.V.
  • Khusainov F.G.
  • Trufanov V.A.
 RU2096330C1
METHOD FOR PRODUCTION OF SODIUM ASCORBATE FOOD ADDITIVE 2014
  • Novinjuk Ljudmila Vasil'Evna
  • Kukin Mikhail Jur'Evich
 RU2562516C1
ANTIANGINAL DRUG AND METHOD OF ITS PREPARING 1997
  • Gavrilov A.S.
  • Vinokhodova E.V.
  • Butkareva L.I.
 RU2145878C1

RU 2 057 128 C1

Authors

Kochetkova L.I.

Chumakov S.I.

Ionin V.N.

Rudenko A.A.

Istomina L.I.

Veterkhanov S.R.

Dates

1996-03-27—Published

1992-05-06—Filed

read Similar patents