CA2818752C – September 10, 2019 – LIPID-BASED WAX COMPOSITIONS SUBSTANTIALLY FREE OF FAT BLOOM AND METHODS OF MAKING

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Inventors :

MURPHY, TIMOTHY A.; RUSSELL, STEPHEN E.

Owner :

CARGILL, INCORPORATED

Application Number :

CA2818752

Document Number :

CA2818752C

Priority Date :

November 23, 2010

Filing Date :

November 21, 2011

Date of Grant/ Publication :

September 10, 2019

Class :

C11C5 / 00; C11C5 / 02

Abstract

Lipid-based wax compositions and their methods of making are provided for compositions substantially free of fat bloom. The compositions comprise 0.1 -10 percent by weight triacylglycerides, 30-95 percent by weight monoacylglycerides and diacylglycerides combined, and 0.1 -65 percent by weight fatty acids. The methods comprise blending the monoacylglycerides, diacylglycerides, triacylglycerides, and fatty acids by heating the lipid-based wax composition at a sufficiently high temperature to destroy substantially all crystal structure within the lipid-based wax composition. The methods further comprise pouring the lipid-based wax composition into a mold or a container having a surface and a core, wherein the pouring is conducted at a temperature at least 15°C greater than the congeal point of the lipid- based wax composition. The methods further comprise cooling the lipid-based wax composition under conditions sufficient to cool the core to at least 5°C below the congeal point of the lipid-based wax composition in 30-90 minutes.

Claim(s)

1. A lipid-based wax composition that is substantially free of fat bloom, the lipid-based wax composition comprising: 0.1-10 percent by weight triacylglycerides; 30-95 percent by weight monoacylglycerides and diacylglycerides combined; and 0.1-65 percent by weight fatty acids; wherein the lipid-based wax composition is substantially free of fat bloom when formed by the process of: (a) blending the monoacylglycerides, diacylglycerides, triacylglycerides, and fatty acids in the lipid-based wax composition by heating the lipid-based wax composition at a sufficiently high temperature to destroy substantially all crystal structure within the lipid-based wax composition; (b) pouring the lipid-based wax composition into a mold or a container having a surface and a core, wherein the pouring is conducted at a temperature at least 15°C greater than the congeal point of the lipid-based wax composition, therein forming a molded wax; (c) cooling the lipid-based wax composition under conditions sufficient to cool the core of the molded wax to at least 5°C below the congeal point of the lipid-based wax composition in 30-90 minutes.;
2. The lipid-based wax composition of claim 1 comprising: 18 percent by weight triacylglycerides; 40-80 percent by weight monoacylglycerides and diacylglycerides combined; and 5-60 percent by weight fatty acids.;
3. The lipid-based wax composition of claim 1 comprising: 25 percent by weight triacylglycerides; 45-65 percent by weight monoacylglycerides and diacylglycerides combined; and 30-50 percent by weight fatty acids.;
4. The lipid-based wax composition of claim 3 comprising: 25-45 percent by weight monoacylglycerides; and 10-30 percent by weight diacylglycerides.;
5. The lipid-based wax composition of claim 1 comprising: 2-5 percent by weight triacylglycerides; 30-40 percent by weight monoacylglycerides; 15-25 percent by weight diacylglycerides; and 35-45 percent by weight fatty acids.;
6. The lipid-based wax composition of any of claims 1 to 5, wherein the monoacylglycerides, diacylglycerides, triacylglycerides, and fatty acids are derived from natural oils selected from the group consisting of canola oil, rapeseed oil, coconut oil, corn oil, cottonseed oil, olive oil, palm oil, peanut oil, safflower oil, sesame oil, soybean oil, sunflower oil, linseed oil, palm kernel oil, tung oil, jatropha oil, mustard oil, camellina oil, pennycress oil, hemp oil, algal oil, castor oil, lard, tallow, poultry fat, yellow grease, fish oil, tall oils, and mixtures thereof.;
7. The lipid-based wax composition of any of claims 1 to 5, wherein the monoacylglycerides, diacylglycerides, triacylglycerides, and fatty acids are derived from palm oil or soybean oil.;
8. The lipid-based wax composition of any of claims 1 to 5, wherein the lipid-based wax composition has a melting point between 55°C and 75°C.;
9. The lipid-based wax composition of any of claims 1 to 5, wherein the lipid-based wax composition further comprises at least one additive selected from the group consisting of wax-fusion enhancer additives, coloring agents, scenting agents, migration inhibitors, additional optimal wax ingredients, surfactants, cosurfactants, emulsifiers, metals, individually or in combinations thereof.;
1 0. The lipid-based wax composition of any of claims 1 to 5, wherein the monoacylglycerides and the diacylglycerides comprise a residual inorganic complex selected from the group consisting of phosphates, phosphites, nitrates, sulfates, chlorides, bromides, iodides, nitrides, and mixtures thereof, wherein the concentration of the residual inorganic complex is less than 15 ppm in the monoacylglycerides and the diacylglycerides combined.;
1 1. The lipid-based wax composition of any of claims 1 to 5, wherein the monoacylglycerides and the diacylglycerides comprise an organic acid selected from the group consisting of citric acid, lactic acid, oxalic acid, carboxylic acid, and mixtures thereof, and further wherein the concentration of the organic acid is less than 500 ppm in the monoacylglycerides and the diacylglycerides combined.;
12. The lipid-based wax composition of any of claims 1 to 5, wherein the blending comprises a first blending of the monoacylglycerides and the diacylglycerides to form a mixture of monoacylglycerides and diacylglycerides, followed by a second blending of the mixture of monoacylglycerides and diacylglycerides with the triacylglycerides and the fatty acids.;
1 3. The lipid-based wax composition of claim 1 2, wherein the monoacylglycerides and the diacylglycerides are distilled prior to the second blending with the triacylglycerides and the fatty acids.;
14. The lipid-based wax composition of any of claims 1 to 5, wherein the cooling of the lipid-based wax composition is conducted at a temperature between 18°C and 33°C.;
1 5. The lipid-based wax composition of any of claims 1 to 5, wherein the cooling of the lipid-based wax composition is conducted without the assistance of a fan.;
1 6. The lipid-based wax composition of any of claims 1 to 5, wherein the cooling of the lipid-based wax composition is conducted with the assistance of a fan.;
1 7. The lipid-based wax composition of any of claims 1 to 5, wherein the container is larger than 7.5 centimeters in diameter.;
1 8. The lipid-based wax composition of any of claims 1 to 5, wherein the container is larger than 15 centimeters in diameter.;
1 9. The lipid-based wax composition of any of claims 1 to 5, wherein the lipid-based wax composition is poured into a mold or container that includes a wick disposed therein.;
20. The lipid-based wax composition of any of claims 1 to 5, wherein the cooling of the lipid-based wax may have a cooling rate as slow as 0.27°C per minute during the first 90 minutes after pouring without showing an exothermic peak at the core of the lipid-based wax composition.;
claim 21: 21. The lipid-based wax composition of any of claims 1 to 5, wherein the lipid-based wax composition exhibits stability against phase transformation for at least one year when stored at or below 21 °C following the cooling of the lipid-based wax composition substantially free of fat bloom.;
claim 22: 22. The lipid-based wax composition of any of claims 1 to 5, wherein the lipid-based wax composition exhibits stability against phase transformation for at least one year when stored at or below 27°C following the cooling of the lipid-based wax composition substantially free of fat bloom.;
claim 23: 23. The lipid-based wax composition of any of claims 1 to 5, wherein the lipid-based wax composition exhibits stability against phase transformation for at least one year when stored at or below 32°C following the cooling of the lipid-based wax composition substantially free of fat bloom.;
claim 24: 24. The lipid-based wax composition of any of claims 1 to 5, wherein the pouring of the lipid-based wax composition is into at least two molds, each 7.62 centimeters in diameter, 3.81 centimeters in height, and weighing 100 grams; wherein the lipid-based wax composition is cooled at 24°C for at least 24 hours following the pouring, therein forming at least two candles; wherein the candles are then heated in an oven at 40.5°C±0.5°C for 4 hours without exhibiting fat blooming by visual inspection upon removal from the oven.;
claim 25: 25. The lipid-based wax composition of any of claims 1 to 5, wherein the lipid-based wax composition is formed into a candle mold having a wick and a diameter of approximately 75 millimeters, wherein the lipid-based wax a burn diameter that is at least 90% of the diameter of the candle mold diameter.;
claim 26: 26. A lipid-based wax composition that is substantially free of fat bloom, the lipid-based wax composition comprising: 2-5 percent by weight triacylglycerides; 30-40 percent by weight monoacylglycerides; 15-25 percent by weight diacylglycerides; and 35-45 percent by weight fatty acids; wherein the lipid-based wax composition is substantially free of fat bloom when formed by the process of: (a) blending the monoacylglycerides, diacylglycerides, and triacylglycerides in the lipid-based wax composition by heating the lipid-based wax composition at a sufficiently high temperature to destroy substantially all crystal structure within the lipid-based wax composition; (b) pouring the lipid-based wax composition into a mold or a container having a surface, a core, and a wick disposed therein, wherein the pouring is conducted at a temperature at least 15°C greater than the congeal point of the lipid-based wax composition, therein forming a molded wax; (c) cooling the lipid-based wax composition at a temperature between 18°C and 33°C to cool the core of the molded wax to at least 5°C below the congeal point of the lipid-based wax composition in 30-90 minutes, wherein the cooling is conducted without the assistance of a fan; and (d) removing the lipid-based wax composition from the mold or leaving the lipid-based wax composition in the container as a candle.;
claim 27: 27. The lipid-based wax composition of claim 26, wherein the pouring of the lipid-based wax composition is into at least one mold 76.2 millimeters in diameter and 88.9 millimeters in height, wherein the at least one candle has a rate of consumption between 3-4 g/hr and a burn diameter of at least 70 millimeters after burning for 4 hours.;
claim 28: 28. A method of making a lipid-based wax composition that is substantially free of fat bloom, the method comprising: providing 0.1-10 percent by weight triacylglycerides, 30-95 percent by weight monoacylglycerides and diacylglycerides combined, and 0.1-65 percent by weight fatty acids; blending the monoacylglycerides, diacylglycerides, triacylglycerides, and fatty acids in the lipid-based wax composition by heating the lipid-based wax composition at a sufficiently high temperature to destroy substantially all crystal structure within the lipid-based wax composition; pouring the lipid-based wax composition into a mold or a container having a surface and a core, wherein the pouring is conducted at a temperature at least 15°C greater than the congeal point of the lipid-based wax composition, therein forming a molded wax; cooling the lipid-based wax composition under conditions sufficient to cool the core of the molded wax to at least 5°C below the congeal point of the lipidbased wax composition in 30-90 minutes, wherein the lipid-based wax composition is substantially free of fat bloom.;
claim 29: 29. The method of claim 28, wherein the cooling of the lipid-based wax composition is conducted at a temperature between 18°C and 33°C.;
claim 30: 30. The method of claim 28 or 29 further comprising removing the lipidbased wax composition from the mold or leaving the lipid-based wax composition in the container as a candle.;
claim 31: 31. The method of claim 28 or 29 further comprising inserting a wick in the mold or container prior to or during the pouring of the lipid-based wax.

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