IP Library › Granted Patent US 7,431,863
Granted Patent B2
US 7,431,863 · App. 11/370,338 · Granted Oct 7, 2008

Calcium hypochlorite composition

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Quick Facts
Patent No.
US 7,431,863
App. No.
11/370,338
Granted
Oct 7, 2008
Kind
B2
Abstract

Describes a composition comprising a mixture of calcium hypochlorite and hydrated magnesium sulfate having an average of from 3 to 5.5 moles of water of hydration per mole of magnesium sulfate. The amount of hydrated magnesium sulfate in the composition is such that the composition has at least a DOT Packing Group III Division 5.1 Classification.

Claims (16)

1. A composition comprising a mixture of (a) calcium hypochlorite and (b) hydrated magnesium sulfate having an average of from 3 to 5.5 moles of water of hydration per mole of magnesium sulfate, the amount of said hydrated magnesium sulfate present in said composition being such that the composition has at least a DOT Packing Group III Division 5.1 Classification.

2. The composition of claim 1 wherein the free available chlorine content of the calcium hypochlorite is at least 39 percent.

3. The composition of claim 2 wherein the calcium hypochlorite is hydrated calcium hypochlorite having a free available chlorine content of from 45 to 80 percent, and the hydrated magnesium sulfate has an average of from 3 to 5 moles of water of hydration per mole of magnesium sulfate.

4. The composition of claim 3 wherein the hydrated magnesium sulfate is present in the composition in amounts of from 10 to 45 weight percent.

5. The composition of claim 4 wherein the amount of magnesium sulfate hydrate is present in the composition in amounts such that the composition is classified as a non Division 5.1 oxidizer.

6. The composition of claim 5 wherein the free available chlorine content of the hydrated calcium hypochlorite is from 55 to 75 percent, the hydrated magnesium sulfate has an average of from 3 to 4 moles of water of hydration per mole of magnesium sulfate, and the hydrated magnesium sulfate is present in the composition in amounts of from 20 to 35 weight percent.

7. The composition of claim 4 wherein the composition is in a form chosen from granular, tablets, briquettes and pellets.

8. A calcium hypochlorite composition that is classified as at least a DOT Packing Group III Division 5.1 oxidizer, said composition comprising a mixture of (a) calcium hypochlorite and (b) hydrated magnesium sulfate having from 3 to 5.5 moles of water of hydration per mole of magnesium sulfate, said hydrated magnesium sulfate having been prepared by blending appropriate molar amounts of (i) magnesium sulfate having not more than 3 moles of water of hydration per mole of magnesium sulfate and (ii) hydrated magnesium sulfate having greater than 3 moles of water of hydration per mole of magnesium sulfate for a time sufficient to expend the exotherm resulting from the blend.

9. The composition of claim 8 wherein the free available chlorine content of the calcium hypochlorite is at least 39 percent, the magnesium sulfate (i) having not more than 3 moles of water of hydration per mole of magnesium sulfate is anhydrous magnesium sulfate, and the hydrated magnesium sulfate (ii) has from 4 to 7 moles of water of hydration per mole of magnesium sulfate.

10. The composition of claim 9 wherein the calcium hypochlorite is hydrated calcium hypochlorite having a free available chlorine content of from 45 to 80 percent, and the hydrated magnesium sulfate has an average of from 3 to 5 moles of water of hydration per mole of magnesium sulfate.

11. The composition of claim 10 wherein the hydrated magnesium sulfate is present in the composition in amounts of from 10 to 45 weight percent.

12. The composition of claim 10 wherein the amount of magnesium sulfate hydrate is present in the composition in amounts such that the composition is classified as a non Division 5.1 oxidizer.

13. The composition of claim 12 wherein the free available chlorine content of the hydrated calcium hypochlorite is from 55 to 75 percent, the hydrated magnesium sulfate has an average of from 3 to 4 moles of water of hydration per mole of magnesium sulfate, and the hydrated magnesium sulfate is present in the composition in amounts of from 20 to 35 weight percent.

14. The composition of claim 11 wherein the hydrated magnesium sulfate is prepared by heating the appropriate amounts of magnesium sulfate (i) and hydrated magnesium sulfate (ii) at temperatures of from 50° C. to 100° C. for from 4 to 20 hours.

15. The composition of claim 14 wherein the hydrated magnesium sulfate is prepared by heating the appropriate amounts of magnesium sulfate (i) and hydrated magnesium sulfate (ii) at temperatures of from 50° C. to 75° C. for from 4 to 15 hours.

16. The composition of claim 14 wherein the composition is in a form chosen from granular, tablets, briquettes and pellets.

Assignments (12)
MERGER Recorded Aug 9, 2017
From: AXIALL OHIO, INC.
To: EAGLE US 2 LLC
Reel/Frame 043242/0798 →
RELEASE OF SECURITY INTEREST Recorded Sep 18, 2016
From: BARCLAYS BANK PLC, AS COLLATERAL AGENT
To: AXIALL CORPORATION; ROYAL MOULDINGS LIMITED; PLASTIC TRENDS, INC.; AXIALL OHIO, INC.; GEORGIA GULF CORPORATION; EXTERIOR PORTFOLIO, LLC
Reel/Frame 039857/0569 →
SUBSTITUTION OF ADMINISTRATIVE AGENT & ASSIGNMENT OF RIGHTS UNDER CREDIT AGREEMENT AND LOAN DOCUMENTS Recorded Sep 16, 2016
From: GENERAL ELECTRIC COMPANY, AS ADMINISTRATIVE AGENT
To: WELLS FARGO CAPITAL FINANCE, LLC, AS ADMINISTRATIVE AGENT
Reel/Frame 040055/0033 →
RELEASE OF SECURITY INTEREST Recorded Sep 16, 2016
From: WELLS FARGO CAPITAL FINANCE, LLC
To: EAGLE SPINCO, INC.; EAGLE HOLDCO 3 LLC; EAGLE US 2 LLC; EAGLE CONTROLLED 2 OHIO SPINCO, INC.; EAGLE NATRIUM LLC; EAGLE PIPELINE, INC.; PHH MONOMERS L.L.C.; EAGLE CONTROLLED 1 CANADIAN SPINCO, INC.
Reel/Frame 039768/0655 →
SUBSTITUTION OF ADMINISTRATIVE AGENT AS SUCCESSOR BY MERGER Recorded Sep 15, 2016
From: GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT
To: GENERAL ELECTRIC COMPANY, ADMINISTRATIVE AGENT AS SUCCESSOR BY MERGER
Reel/Frame 040053/0855 →
SECURITY AGREEMENT Recorded Mar 3, 2015
From: AXIALL CORPORATION; ROYAL MOULDINGS LIMITED; PLASTIC TRENDS, INC.; GEORGIA GULF CORPORATION; EXTERIOR PORTFOLIO, LLC; AXIALL OHIO, INC.
To: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Reel/Frame 035121/0600 →
RELEASE OF SECURITY INTEREST Recorded Mar 2, 2015
From: U.S. BANK NATIONAL ASSOCIATION
To: AXIALL OHIO, INC.
Reel/Frame 035115/0559 →
CHANGE OF NAME Recorded Jul 10, 2013
From: EAGLE CONTROLLED 2 OHIO SPINCO, INC.
To: AXIALL OHIO, INC.
Reel/Frame 030764/0631 →
SECURITY AGREEMENT Recorded Feb 11, 2013
From: EAGLE CONTROLLED 2 OHIO SPINCO, INC.
To: U.S. BANK NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 029787/0794 →
PATENT SECURITY AGREEMENT Recorded Jan 29, 2013
From: EAGLE SPINCO, INC.; EAGLE HOLDCO 3 LLC; EAGLE US 2 LLC; EAGLE CONTROLLED 2 OHIO SPINCO, INC.; EAGLE NATRIUM LLC; PHH MONOMERS, L.L.C.; EAGLE PIPELINE, INC.; EAGLE CONTROLLED 1 CANADIAN SPINCO, INC.
To: GENERAL ELECTRIC CAPITAL CORPORATION
Reel/Frame 029717/0932 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 28, 2013
From: PPG INDUSTRIES OHIO, INC.
To: EAGLE CONTROLLED 2 OHIO SPINCO, INC.
Reel/Frame 029702/0982 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 29, 2006
From: PICKENS, STANLEY R.
To: PPG INDUSTRIES OHIO, INC.
Reel/Frame 017685/0769 →