Hybrid wax compositions for use in compression molded wax articles such as candles
View Patent ↗A hybrid wax compositions that are suitable for use in manufacturing wax articles (e.g., candles) by compression molding. The combination of a hydrogenated natural oil-based wax and a paraffin wax having a select distribution of hydrocarbon chain lengths provides the hybrid wax compositions with improved properties, such as improved compressive strength and improved de-molding characteristics, for example, as evidenced by reducing scarring and/or flashing. The hybrid wax compositions comprise: (a) a wax comprising a hydrogenated natural oil; and (b) a paraffin wax, wherein the paraffin wax comprises less than about 50% by weight of the hybrid wax composition, and wherein about 52% or greater of hydrocarbons in the paraffin wax have carbon chain lengths ranging from C25 to C29.
1. A hybrid wax composition comprising:
(a) a hydrogenated natural oil-based wax; and
(b) a paraffin wax, wherein the paraffin wax is present in an amount of less than about 50% by weight of the hybrid wax composition, and wherein about 52% by weight or greater of hydrocarbons in the paraffin wax have carbon chain lengths ranging from C25 to C29.
2. The hybrid wax composition of claim 1 , wherein about 65% by weight or greater of the hydrocarbons in the paraffin wax have carbon chain lengths ranging from C25 to C29.
3. The hybrid wax composition of claim 1 , wherein about 70% by weight or greater of the hydrocarbons in the paraffin wax have carbon chain lengths ranging from C25 to C29.
4. The hybrid wax composition of claim 1 , wherein about 10% by weight or less of hydrocarbons in the paraffin wax are branched.
5. The hybrid wax composition of claim 1 , wherein from about 7% to about 10% by weight of hydrocarbons in the paraffin wax are branched hydrocarbons.
6. The hybrid wax composition of claim 1 , wherein the paraffin wax has a hydrocarbon carbon chain length distribution that is centered at about C25 to C27.
7. The hybrid wax composition of claim 1 , wherein the hydrogenated natural oil-based wax comprises a hydrogenated vegetable oil, a hydrogenated animal fat, or a mixture thereof.
8. The hybrid wax composition of claim 7 , wherein the hydrogenated natural oil-based wax comprises fully hydrogenated soybean oil.
9. The hybrid wax composition of claim 1 , wherein the hydrogenated natural oil-based wax has an iodine value (IV) of about 0.1 to about 80.
10. The hybrid wax composition of claim 1 , wherein the hydrogenated natural oil-based wax comprises a hydrogenated metathesized natural oil-based wax.
11. The hybrid wax composition of claim 10 , wherein the hydrogenated metathesized natural oil-based wax has an iodine value (IV) of about 0.1 to about 80.
12. The hybrid wax composition of claim 1 , wherein the hydrogenated natural oil-based wax comprises: (i) a hydrogenated natural oil-based wax; and (ii) a hydrogenated metathesized natural oil-based wax.
13. The hybrid wax composition of claim 12 , wherein the hydrogenated natural oil-based wax and the hydrogenated metathesized natural oil-based wax are present in a weight ratio ranging from about 10:1 to about 1:2.
14. The hybrid wax composition of claim 12 , wherein the hydrogenated metathesized natural oil-based wax comprises hydrogenated metathesized soybean oil.
15. The hybrid wax composition of claim 1 , wherein the hydrogenated natural oil-based wax is present in an amount of about 41% wax weight or greater of the hybrid wax.
16. The hybrid wax composition of claim 1 , wherein the hydrogenated natural oil-based wax is present in an amount of about 51% wax weight or greater of the hybrid wax.
17. The hybrid wax composition of claim 1 , further comprising a fat bloom inhibitor.
18. The hybrid wax composition of claim 17 , wherein the fat bloom inhibitor comprises monoglycerides, diglycerides, sorbitan esters, polyglycerol polyricinoleate, lecithin, paraffin, surface-active ingredients, and mixtures thereof.
19. The hybrid wax composition of claim 1 , wherein the hydrogenated natural oil-based wax is fat bloom resistant.
20. The hybrid wax composition of claim 1 , wherein the paraffin wax is present in an amount of about 20% wax weight to about 49% wax weight of the hybrid wax.
21. A method of making a wax article by compression molding, the method comprising the steps of:
providing a prilled wax comprising (a) a hydrogenated natural oil-based wax; and (b) a paraffin wax, wherein the paraffin wax is present in an amount of less than about 50% by weight of the hybrid wax composition, and wherein about 52% by weight or greater of hydrocarbons in the paraffin wax have carbon chain lengths ranging from C25 to C29;
providing a compression molding apparatus comprising a mold defining a cavity and at least one compressing piston;
at least partially filling the cavity of the compression molding apparatus with the prilled wax;
compressing the prilled wax with the piston to form the article; and
ejecting the article from the cavity.
22. A hybrid wax composition comprising:
(a) about 40% to 50% wax weight hydrogenated soybean oil-based wax;
(b) about 10% to 15% wax weight hydrogenated metathesized soybean oil; and
(c) a paraffin wax, wherein the paraffin wax is present in an amount of less than about 50% by weight of the hybrid wax composition, and wherein about 52% by weight or greater of hydrocarbons in the paraffin wax have carbon chain lengths ranging from C 25 to C 29 , and having a melting point ranging from 130° F. to 140° F.