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CN-122029265-A - Candle wax

CN122029265ACN 122029265 ACN122029265 ACN 122029265ACN-122029265-A

Abstract

The present invention relates to a candle wax composition comprising one or more lauric acid type oils and a plant based oil and/or a plant based wax. Furthermore, the present invention relates to a method of producing a candle wax composition, and to the use of such a candle wax composition for reducing bloom formation and improving the adhesion of the candle wax composition to glass.

Inventors

  • Jack Ryan S. Stifi
  • JAMES HORTON
  • Myra Ophelia Vargas Cruz
  • Omar Avalos Navarrete

Assignees

  • 阿胡斯卡尔斯油脂有限公司

Dates

Publication Date
20260512
Application Date
20240917
Priority Date
20230919

Claims (20)

  1. 1. A candle wax composition, the candle wax composition comprising: a. 10 to 90% by weight of one or more lauric acid type oils, and B. a vegetable-based oil and/or a vegetable-based wax, the vegetable-based oil and/or vegetable-based wax forming the remainder of the composition; Wherein the composition comprises 4 to 45% by weight lauric acid (C12:0) and 0.1 to 20% myristic acid (C14:0) and has an iodine value of 5 to 75.
  2. 2. The candle wax composition of claim 1 wherein the composition comprises 8 to 40% by weight lauric acid.
  3. 3. The candle wax composition of claim 1 or 2 wherein the composition comprises from 12 to 35% by weight lauric acid.
  4. 4. A candle wax composition according to any preceding claim, wherein the composition comprises 1 to 15% by weight myristic acid, preferably 5 to 12% by weight myristic acid.
  5. 5. The candle wax composition according to any preceding claim, wherein the one or more lauric fats are selected from palm kernel oil, coconut oil, babassu oil, mu Lumu Lu You, small crown coconut oil, star palm oil and transgenic rapeseed oil, such as Laurical @, any fraction thereof and any mixture thereof, preferably the one or more lauric fats are selected from palm kernel oil and/or coconut oil, any fraction thereof or any mixture thereof.
  6. 6. The candle wax composition according to any preceding claim, wherein at least one of the one or more lauric acid fats, any fraction thereof, or any mixture thereof is at least partially hydrogenated.
  7. 7. The candle wax composition according to any preceding claim, wherein at least one of the one or more lauric acid fats, any fraction thereof, or any mixture thereof is fully hydrogenated.
  8. 8. The candle wax composition according to any preceding claim, wherein at least one of the one or more lauric acid fats, any fraction thereof, or any mixture thereof is transesterified.
  9. 9. The candle wax composition according to any preceding claim, wherein the composition comprises 15 to 80 wt% of the one or more lauric acid fats, any fraction thereof, or any mixture thereof.
  10. 10. The candle wax composition according to any preceding claim, wherein the composition comprises from 20 to 60% by weight of the one or more lauric acid fats, any fraction thereof, or any mixture thereof.
  11. 11. The candle wax composition according to any preceding claim, wherein the one or more lauric acids comprise palm kernel oil, preferably palm kernel olein or palm kernel stearin.
  12. 12. The candle wax composition according to any preceding claim, wherein the vegetable-based oil is selected from the group consisting of at least partially hydrogenated or fractionated cottonseed oil, sunflower oil, safflower oil, corn oil, olive oil, peanut oil, rapeseed oil, almond oil, jojoba oil, soybean oil, avocado oil, sesame oil, castor oil, palm oil, shea butter, cocoa butter, or a combination thereof, preferably the vegetable-based oil is selected from the group consisting of soybean oil, shea butter, or fractions thereof, such as soybean oil or fractions thereof.
  13. 13. The candle wax composition according to any preceding claim, wherein the plant-based wax is selected from carnauba wax, candelilla wax, and rice bran wax.
  14. 14. A candle wax composition according to any preceding claim, wherein the composition has a Solid Fat Content (SFC) N10 of 70% or more, preferably 75% or more, more preferably 80% or more, according to ISO 8292-1.
  15. 15. The candle wax composition according to any preceding claim, wherein the composition has a Solid Fat Content (SFC) N20 according to ISO 8292-1 of 55% to 90%, preferably 60% to 85%, more preferably 65% to 85%.
  16. 16. The candle wax composition according to any preceding claim, wherein the composition has a Solid Fat Content (SFC) N30 according to ISO 8292-1 of from 35% to 70%, preferably from 37% to 65%, more preferably from 40% to 60%.
  17. 17. The candle wax composition according to any preceding claim, wherein the composition has a Solid Fat Content (SFC) N35 according to ISO 8292-1 of 15% to 55%, preferably 20% to 50%, more preferably 25% to 45%.
  18. 18. The candle wax composition according to any preceding claim, wherein the composition has a Solid Fat Content (SFC) N40 according to ISO 8292-1 of 5% to 40%, preferably 7% to 35%, more preferably 10% to 30%.
  19. 19. The candle wax composition of any preceding claim wherein the composition has a Solid Fat Content (SFC) N10 of 80% or greater, N20 of 65 to 85%, N30 of 40 to 60%, N35 of 25 to 45%, N40 of 10 to 30% according to ISO 8292-1.
  20. 20. The candle wax composition according to any preceding claim, wherein the composition further comprises paraffin wax.

Description

Candle wax Technical Field The present invention relates to a candle wax composition comprising one or more lauric acid type oils and a plant based oil and/or a plant based wax. Furthermore, the present invention relates to a method of producing a candle wax composition, and to the use of such a candle wax composition for reducing bloom formation and improving the adhesion of the candle wax composition to glass. Background Since early civilization, candles were used as a means of providing illumination. Traditionally, the candle body is formed from tallow and beeswax, however, following the industrial revolution candles are more made from paraffin, a byproduct of the gasoline production process, because such materials are less costly and more readily available. However, in recent years, as the environmental impact of using non-renewable fossil fuel materials has become more and more interesting, research into alternative materials for use in making candles has been motivated. One possible solution is to regress to use more traditional materials, such as beeswax, which are however less economically viable for the producer. In addition, such as beeswax is generally believed to provide less flammability than paraffin wax and thus consumers may be less willing to use more traditional materials. A candle made of renewable, environmentally friendly materials that provides burn properties similar to paraffin wax would be a desirable choice. Unfortunately, previous attempts to formulate candle wax compositions from vegetable oil-based materials have mostly ended with failure, as the final product often has some unacceptable drawbacks. Such defects include cracking of the molded candles interior, bubble formation, shrinkage of the product, undesirable frosting/bloom due to triglyceride and fatty acid crystallization, poor container adhesion, poor burn performance and/or short shelf life. The saturated triglycerides present in renewable, vegetable-based oils or waxes are fundamentally different from the inherent properties of linear aliphatic hydrocarbons found in paraffin waxes. Triglycerides have polymorphic behaviour and therefore upon rapid cooling, initially form less stable crystals with lower molecular density and lower melting point. By heating and cooling cycles, these crystals can rearrange into a more stable polymorphic structure. Rearrangement of the polymorphic structure results in the formation of cracks and frosting/frosting formation in the candle body. The presence of such defects increases the rejection rate of the product during production, thereby reducing the overall value and increasing the cost to the manufacturer. Accordingly, many attempts have been made to overcome these problems. For example, EP 2,845,895 discloses a candle made from a fatty acid wax composition comprising a crystallization inhibitor additive. Specifically, the additive is selected from at least one homopolymer of a monomer of formula R 1-CH=CR3R4 (X), or at least one copolymer of a monomer of formula (X), stereoisomers and mixtures thereof. R 1 is selected from hydrogen, -C (=O) -OR 5 and-CH 2-C(=O)-OR5,R3 is selected from hydrogen, -CH 3、-C(=O)-OR5 and-CH 2-C(=O)-OR5,R4 is selected from-C (=O) -OR 5、-O-C(=O)-R5 and-CH 2-C(=O)-OR5, and R 5 is C 12-22 alkyl. While the use of crystallization inhibitors may reduce or prevent frosting, the inclusion of such additives increases the time and cost of producing plant-based candle waxes. An alternative plant-based candle wax is disclosed in US 6,599,344, consisting essentially of at least 85% partially hydrogenated soybean oil having an iodine value between 49 and 53 and a melting point between 122 and 128 degrees fahrenheit (50 to 53.3 ℃), 0 to 4% synthetic wax made by polymerizing alpha olefins under free radical conditions to form a highly branched polymer, 0 to 4% of a second hydrogenated vegetable oil or petroleum-based oil, 0 to 10% fragrance, and 0 to 3% dye. US' 344 teaches that the formed plant-based candle wax is capable of withstanding moderate changes in temperature and environment without sagging, cracking or other physical degradation. In addition, US' 344 teaches that the composition does not produce smoke when burned and is able to cleanly melt off the vessel wall. However, such plant-based candle waxes do not address the problem of frosting/bloom. Accordingly, there remains a need to provide a more cost-effective plant-based candle wax that prevents, retards, or reduces the formation of crystal frosting. Further, it would be desirable to provide a method of forming a plant-based candle wax composition that can address at least some of the other known aesthetic problems associated with such materials, such as providing improved adhesion to containers and/or reduced product shrinkage. Summary of The Invention According to a first aspect of the present invention there is provided a candle wax composition comprising A. 10 to 90% by weight of one or more lauric acid typ