Temperature change compositions and tissue products providing a cooling sensation
View Patent ↗Wiping products, such as facial tissues, contain a temperature change composition that can provide a cooling sensation when contacted with the skin of a user. The temperature change composition is structured emulsion that may include a phase change material, a carrier, a surfactant, and a crystalline initiator. The phase change materials, in one embodiment, can have a relatively high heat of fusion. When undergoing a phase change, the temperature change composition absorbs heat and thereby provides a cooling feeling or cooling sensation to the skin of a user.
1. A dry tissue product comprising:
a first tissue web comprising fibers, the tissue web including a first side and a second side; and
a temperature change composition present on at least the first side of the tissue web, the temperature change composition being dispersed in a single phase cubic liquid crystal, the temperature change composition comprising a structured emulsion containing:
a phase change material present in an amount between about 20% by weight of the temperature change composition and about 90% by weight of the temperature change composition;
a crystalline initiator;
a carrier; and
a surfactant.
2. The dry tissue product of claim 1 wherein the crystalline initiator is selected from fatty alcohols, fatty acids, esters, sugars, salts, crystalline and microcrystalline waxes, microcrystalline triglycerides, and combinations thereof.
3. The dry tissue product of claim 1 wherein the crystalline initiator is present in an amount between about 0.1% by weight of the temperature change composition and about 30% by weight of the temperature change composition.
4. The dry tissue product of claim 1 wherein the carrier is selected from water, glycerin, diglycerin, glycerin derivatives, glycols, glycol derivatives, sugars, ethoxylated and/or propoxylated esters and ethers, urea, sodium PCA, alcohols, ethanol, isopropyl alcohol, and combinations thereof.
5. The dry tissue product of claim 1 wherein the carrier is present in an amount between about 1% by weight of the temperature change composition and about 40% by weight of the temperature change composition.
6. The dry tissue product of claim 1 wherein the surfactant is selected from sugar esters and their derivatives, sucrose esters, polyglyceryl esters, sorbitan esters, fatty acid esters, alkylpolyglucosides, and combinations thereof.
7. The dry tissue product of claim 1 wherein the surfactant is present in an amount between about 0.5% by weight of the temperature change composition and about 15% by weight of the temperature change composition.
8. The dry tissue product of claim 1 wherein the phase change material is selected from a hydrocarbon, a wax, an oil, a natural butter, a fatty acid, a fatty acid ester, a dibasic acid, a dibasic ester, a 1 -halide, a primary alcohol, an aromatic compound, an anhydride, an ethylene carbonate, a polyhydric alcohol, and combinations thereof.
9. The dry tissue product of claim 1 wherein the phase change material is selected from tricaprin, parrafin, nonadecane, octadecane, stearyl heptanoate, lauryl lactate, lauryl alcohol, capric acid, caprylic acid, cetyl babassuate, mangifera indica (mango) seed butter, theobroma cacao (cocoa) seed butter, butyrospermum parkii butter, Di-C 12-15 Alkyl Fumarate, stearyl caprylate, cetyl lactate, cetyl acetate, C 24-28 alkyl methicone, glyceryl dilaurate, stearamidopropyl PG-dimonium chloride phosphate, jojoba esters, and combinations thereof.
10. The dry tissue product of claim 1 wherein the phase change material is present in an amount between about 50% by weight of the temperature change composition and about 80% by weight of the temperature change composition.
11. The dry tissue product of claim 1 wherein the temperature change composition has a heat of fusion of at least about 100 J/g.
12. The dry tissue product of claim 1 wherein the temperature change composition is thermally reversible.
13. The dry tissue product of claim 12 wherein the temperature change composition is solid at room temperature and has a phase change at a temperature of greater than about 26° C.
14. The dry tissue product of claim 1 wherein the phase change material is oil soluble and hydrophobic.
15. The dry tissue product of claim 1 wherein the temperature change composition is present on the tissue web in an amount from about 4 gsm to about 40 gsm.