IP Library › Granted Patent US 9,745,203
Granted Patent B2
US 9,745,203 · App. 14/524,580 · Granted Aug 29, 2017

Non-caking salt composition, preparation process and use thereof

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Quick Facts
Patent No.
US 9,745,203
App. No.
14/524,580
Granted
Aug 29, 2017
Kind
B2
Abstract

The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.

Claims (8)

1. A sodium chloride composition comprising an iron complex of tartaric acid wherein between 60 and 80% by weight of the tartaric acid is meso-tartaric acid, wherein the iron complex of tartaric acid reduces caking of the sodium chloride composition.

2. The sodium chloride composition according to claim 1 , wherein a 10% by weight aqueous solution thereof has a pH value of between 3 and 12.

3. The sodium chloride composition according to claim 1 , wherein the iron is iron(III).

4. The sodium chloride composition according to claim 1 , wherein the molar ratio between iron and tartaric acid is between 0.1 and 2.

5. The sodium chloride composition according to claim 4 , wherein the iron complex of tartaric acid is present in the non-caking sodium chloride composition in a concentration of between 1 ppm and 200 ppm, based on iron.

6. The sodium chloride composition according to claim 1 , wherein the sodium chloride composition is a non-caking sodium chloride composition selected from feed salt, food salt, pharma salt, retail salt, industrial salt, a road salt, and a salt for use in electrolysis operations.

7. The sodium chloride composition according to claim 6 , wherein the iron complex of tartaric acid, with between 60 and 80% by weight of the tartaric acid being meso-tartaric acid, is present in said sodium chloride composition in a concentration of between 1 ppm and 200 ppm, based on iron, and wherein said sodium chloride composition is used in a membrane electrolysis operation.

8. The sodium chloride composition according to claim 2 , wherein a 10% by weight aqueous solution thereof has a pH value of between 6 and 11.

Assignments (3)
CHANGE OF NAME Recorded Sep 18, 2019
From: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
To: NOURYON CHEMICALS INTERNATIONAL B.V.
Reel/Frame 050426/0671 →
SECURITY INTEREST Recorded Oct 1, 2018
From: STARFRUIT US MERGER SUB 1 LLC; STARFRUIT US MERGER SUB 2 LLC; AKZO NOBEL SURFACE CHEMISTRY LLC; AKZO NOBEL CHEMICALS B.V.; AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
To: WILMINGTON TRUST (LONDON) LIMITED, AS COLLATERAL AGENT
Reel/Frame 047231/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 15, 2016
From: BAKKENES, HENDRIKUS WILHELMUS; BERGEVOET, ROBERTO ALOYSIUS GERARDUS MARIA; MEIJER, JOHANNES ALBERTUS MARIA; STEENSMA, MARIA
To: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
Reel/Frame 040740/0619 →