SODIUM ACETATE TRIHYDRATE FORMULATIONS

• US 20160168438A1
• Filed: 07/04/2014
• Published: 06/16/2016
• Est. Priority Date: 07/05/2013
• Status: Abandoned Application

• Current Assignee: British American Tobacco Limited (British American Tobacco PLC)
• Original Assignee: British American Tobacco Limited (British American Tobacco PLC)
• Inventors: HARDING, Nick, PEARSON, Philip, ROBINSON, Joe, MOR, Ori, LAWSON, Michael
• Application Number:
  US14/902,663
• Publication Number:
  US 20160168438A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A24B 15/165 comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
• CPC Class Codes: A24F 42/10 Devices with chemical heating means
• CPC Class Codes: C09K 5/063 Materials absorbing or liberating heat during crystallisation; Heat storage materials
• CPC Class Codes: F28D 20/003 using thermochemical reactions
• CPC Class Codes: Y02E 60/14 Thermal energy storage

Abstract

Embodiments relate to formulations comprising sodium acetate trihydrate and other components. In addition, embodiments further relate to methods of preparing such formulations. Furthermore, embodiments relate to products including such formulations.

Claims

1. A formulation comprising sodium acetate trihydrate (SAT), a kinetic inhibitor and a solvent.

2. A formulation as claimed in claim 1, having a peak temperature of from about 40 to about 60°

C. upon crystallization.

3. A formulation as claimed in claim 1, wherein the formulation exhibits increased stability relative to a formulation consisting of the same SAT upon exposure to the mechanical forces exerted by one or more stability tests.

4. A formulation as claimed in claim 1, wherein the kinetic inhibitor is an additive that acts to inhibit nucleation.

5. A formulation as claimed in claim 1, wherein the kinetic inhibitor is selected from the group consisting of:

sodium carboxymethyl cellulose;

gelatine;

ethyl cellulose;

polyethylene glycol;

xanthan gum;

glycerol;

urea;

polysorbate 20;

polysorbate 80;

polyacrylic acid;

sodium pyrophosphate;

polyacrylamide;

pullulan;

poly(vinyl alcohol); and

poly(vinyl acetate).

6. A formulation as claimed in claim 4, wherein the kinetic inhibitor is sodium carboxymethyl cellulose, included in an amount of from about 0.01% to about 1% by weight of the formulation.

7. A formulation as claimed in claim 1, wherein the solvent is selected from the group consisting of:

ethylene glycol;

propylene glycol;

ethanol;

1-propanol;

methanol;

water; and

acetone.

8. A formulation as claimed in claim 7, wherein the solvent comprises water, included in the formulation in an amount of from about 10 to about 40% by weight based on the weight of the SAT.

9. A formulation as claimed in claim 7, wherein the solvent comprises ethylene glycol, included in an amount of from about 1 to about 5% by weight of the formulation.

10. A formulation as claimed in claim 1, wherein the formulation comprises:

from about 70% to about 90% SAT;

from about 0.01% to about 0.1% sodium carboxymethyl cellulose;

from about 5% to about 20% water; and

from about 3% to about 9% by weight ethylene glycol, all by weight of the total formulation.

11. A formulation as claimed in claim 1, wherein the formulation comprises:

from about 70% to about 90% SAT;

from about 0.025% to about 0.1% sodium carboxymethyl cellulose;

from about 10% to about 20% water; and

from about 1% to about 10% by weight potassium acetate, all by weight of the total formulation.

13. A method of preparing a formulation as claimed in claim 1, wherein the components are combined.

14. A method as claimed in claim 13, wherein an aqueous solution of the kinetic inhibitor is formed and is added to the other components.

15. An apparatus comprising a formulation according to claim 1.

16. An apparatus as claimed in claim 15, wherein the formulation is a heat source which emits heat upon use of the apparatus.

17. An apparatus as claimed in claim 16, wherein the apparatus is an inhalation device in which the formulation is a heat source which heats a heatable material.

12. A formulation comprising sodium acetate trihydrate (SAT), potassium acetate and water.

18. A method of preparing a formulation as claimed in claim 12, wherein the components are combined.

19. A method as claimed in claim 18, wherein an aqueous solution of a kinetic inhibitor is formed and is added to the other components.

20. An apparatus comprising a formulation according to claim 12.