# US 7,410,513 B2 · Clean-burning fragrance candle with consistent flame size and burn rate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,410,513 B2 - Document ID: US7410513B2 - Status: Granted - Kind: B2 - Application number: 10/291,160 - Filed: 2002-11-08 - Published: 2004-05-13 - Granted: 2008-08-12 - Earliest claimed: 2002-11-08 - Assignees: S.C. Johnson & Son, Inc. - Inventors: Luz P. Requejo; Kim C. Materna - Web page: https://patentgrep.com/patent/US7410513B2 ## CPC - C11C 5/023: {by casting or melting in a mould} - A61L 9/02: using substances evaporated in the air by heating or combustion - A61L 9/03: Apparatus therefor - C11C 5/002: {Ingredients} - C11C: FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) ## Abstract A wax composition comprising a high molecular weight aliphatic alcohol, a low molecular weight ethylene vinyl acetate copolymer, at least one odorant, and a wax. The odorant is substantially retained in the wax composition when the wax composition is exposed to temperatures below a melting point of the wax composition. Furthermore, the odorant is emitted from the wax composition when the wax composition is exposed to temperatures at or above the melting point of the wax composition. ## Claims ### Claim 1 A candle formed of a wax composition, said wax composition comprising: (a) a low molecular weight ethylene vinyl acetate, having a molecular weight of at most about 5000 molecular weight units; (b) a high molecular weight alcohol, having about 18 to about 22 carbons; (c) at least one odorant; and (d) a paraffin wax having the formula CnH2n+2, where n is between about 18 and 30, the melting temperature of the paraffin wax is between about 120 and about 160, and the paraffin wax contains 85% or more straight-chain paraffins, wherein the combination of said low molecular weight ethylene vinyl acetate, said high molecular weight alcohol, and said wax operate to substantially retain the at least one odorant in said candle when said wax composition is exposed to temperatures below a melting point of said wax composition, and to emit said at least one odorant from said candle when said wax composition is exposed to temperatures at or above the melting point of said wax composition, and wherein said composition contains substantially no microwax. ### Claim 2 (depends on 1) A wax composition according to claim 1, wherein the combination of the low molecular weight ethylene vinyl acetate and the high molecular weight alcohol cause the crystalline structure of said wax composition to substantially trap said odorant at temperatures below the melting point. ### Claim 3 (depends on 1) A wax composition as recited in claim 1, wherein said low molecular weight ethylene vinyl acetate is in an amount of about 0.5 percent to about 8 percent by weight. ### Claim 4 (depends on 1) A wax composition as recited in claim 1, wherein said low molecular weight ethylene vinyl acetate is in an amount of about 2 percent to about 5 percent by weight. ### Claim 5 (depends on 1) A wax composition as recited in claim 1, wherein said high molecular weight alcohol is in an amount of about 1 percent to about 20 percent by weight. ### Claim 6 (depends on 1) A wax composition as recited in claim 1, wherein said high molecular weight alcohol is in an amount of about 5 percent to about 15 percent by weight. ### Claim 7 (depends on 1) A wax composition as recited in claim 1, wherein said low molecular weight ethylene vinyl acetate is in an amount of about 0.5 percent to about 8 percent by weight, and said high molecular weight alcohol is in an amount of about 1 percent to about 20 percent by weight. ### Claim 8 (depends on 2) A wax composition as recited in claim 2, wherein said low molecular weight ethylene vinyl acetate is in an amount of about 0.5 percent to about 8 percent by weight, and said high molecular weight alcohol is in an amount of about 1 percent to about 20 percent by weight. ### Claim 9 (depends on 1) A wax composition as recited in claim 1, wherein said low molecular weight ethylene vinyl acetate is in an amount of about 0.5 percent to about 8 percent by weight, and said high molecular weight alcohol is in an amount of about 1 percent to about 20 percent by weight. ### Claim 10 (depends on 7) A wax composition as recited in claim 7, wherein said high molecular weight alcohol is an aliphatic alcohol. ### Claim 11 (depends on 7) A wax composition as recited in claim 7, wherein said at least one odorant is in an amount of about 0.5 percent to about 30 percent by weight. ### Claim 12 (depends on 7) A wax composition as recited in claim 7, further comprising at least one of a pigment and a dye. ### Claim 13 (depends on 12) A wax composition as recited in claim 12, further comprising at least one ultraviolet inhibitor. ### Claim 14 (depends on 12) A wax composition as recited in claim 12, further comprising at least one oxidation inhibitor. ### Claim 15 A method of making a candle, comprising the steps of: (a) heating a wax at least to its melting point; (b) mixing (i) a low molecular weight ethylene vinyl acetate, having a molecular weight of at most about 5000 molecular weight units, (ii) a high molecular weight alcohol, having about 18 to about 22 carbons, and (iii) at least one odorant with the wax to form a wax composition; (c) casting the wax composition in a mold, wherein the combination of the low molecular weight ethylene vinyl acetate, the high molecular weight alcohol, and the wax operate to substantially retain the at least one odorant in the candle when the wax composition is exposed to temperatures below a melting point of the wax composition, and to emit the at least one odorant from the candle when the wax composition is exposed to temperatures at or above the melting point of the wax composition. ### Claim 16 (depends on 15) A method according to claim 15, wherein, in said mixing step, the combination of the low molecular weight ethylene vinyl acetate and high molecular weight alcohol causes crystals of the wax composition cast in said casting step to substantially trap the odorant at or below the melting point. ### Claim 17 (depends on 15) A method according to claim 15, wherein, during said method of making the candle, substantially no microwax is added to the wax composition cast in said casting step. ### Claim 18 (depends on 15) A method according to claim 15, wherein, in said mixing step, the low molecular weight ethylene vinyl acetate is added such that the wax composition comprises about 0.5 percent to about 8 percent by weight of the low molecular weight ethylene vinyl acetate. ### Claim 19 (depends on 15) A method according to claim 15, wherein, in said mixing step, the high molecular weight alcohol is added such that the wax composition comprises about 1 percent to about 20 percent by weight of the high molecular weight alcohol. ### Claim 20 (depends on 19) A method according to claim 19, wherein, in said mixing step, the high molecular weight alcohol is added such that the wax composition comprises about 1 percent to about 20 percent by weight of the high molecular weight alcohol. ### Claim 21 (depends on 19) A method according to claim 19, wherein, in said mixing step, the high molecular weight alcohol added is an aliphatic alcohol. ### Claim 22 (depends on 15) A method according to claim 15, wherein said step of heating the wax composition comprises heating to a temperature lower than about 160 degrees Fahrenheit. ### Claim 23 (depends on 15) A method according to claim 15, wherein, in said mixing step, the high molecular weight alcohol added is an aliphatic alcohol. ### Claim 24 A candle formed of a wax composition and a wick, said wax composition comprising: (a) a low molecular weight ethylene vinyl acetate; (b) a high molecular weight alcohol; (c) at least one odorant; and (d) a wax, wherein the combination of said low molecular weight ethylene vinyl acetate, said high molecular weight alcohol, and said wax operate to substantially retain the at least one odorant in said candle when said wax composition is exposed to temperatures below a melting point of said wax composition, and to emit said at least one odorant from said candle when said wax composition is exposed to temperatures at or above the melting point of said wax composition, and wherein said composition contains substantially no microwax.