Lubricating members for razor cartridges comprising a metathesized unsaturated polyol ester

Abstract

The invention relates to a lubricating member for a razor cartridge comprising a lipid phase comprising a lipophilic structurant and a liquid phase, wherein said liquid phase comprises a metathesized unsaturated polyol ester which can be manufactured in a simple one batch process without thermal degradation and exhibiting improved lubricating and skin care properties over a sustained period.

What is claimed is: 
     
         1 . A lubricating member comprising,
 a) a liquid phase comprising a metathesized unsaturated polyol ester, said metathesized unsaturated polyol ester having one or more of the following properties:   (i) a weight average molecular weight of from about 5,000 Daltons to about 50,000 Daltons;   (ii) an oligomer index from greater than 0 to 1;   (iii) an iodine value of from about 30 to about 200;   b) a lipophilic structurant; and   c) Optionally a water soluble polymer.   
     
     
         2 . A lubricating member according to  claim 1 , wherein said metathesized unsaturated polyol ester having a weight average molecular weight of from about 5,000 Daltons to about 50,000 Daltons. 
     
     
         3 . A lubricating member according to  claim 1 , wherein said metathesized unsaturated polyol ester has an iodine value of from about 30 to about 200. 
     
     
         4 . A lubricating member comprising,
 a) a liquid phase comprising a metathesized unsaturated polyol ester, said metathesized unsaturated polyol ester having a weight average molecular weight of from about 2,000 Daltons to about 50,000 Daltons; and one or more of the following properties:   (i) a free hydrocarbon content, based on total weight of metathesized unsaturated polyol ester of from about 0% to about 5%;   (ii) an oligomer index from greater than 0 to 1;   (iii) an iodine value of from about 8 to about 200;   b) a lipohilic structurant; and   c) optionally a water soluble polymer   
     
     
         5 . A lubricating member according to  claim 4 , wherein said metathesized unsaturated polyol ester has an iodine value of from about 10 to about 200. 
     
     
         6 . A lubricating member according to  claim 4 , wherein said metathesized unsaturated polyol ester has an oligomer index from about 0.001 to 1. 
     
     
         7 . A lubricating member according to  claim 1 , wherein said metathesized unsaturated polyol ester has a free hydrocarbon content, based on total weight of metathesized unsaturated polyol ester, of from about 0% to about 5%. 
     
     
         8 . A lubricating member according to  claim 1 , said composition comprising, based on total composition weight, from about 0.1% to about 50% of said metathesized unsaturated polyol ester. 
     
     
         9 . A lubricating member according to  claim 1 , wherein the metathesized unsaturated polyol ester is metathesized at least once. 
     
     
         10 . A lubricating member according to  claim 1 , wherein said metathesized unsaturated polyol ester is derived from a natural polyol ester and/or a synthetic polyol ester, preferably said natural polyol ester is selected from the group consisting of a vegetable oil, a animal fat, a algae oil and mixtures thereof; and said synthetic polyol ester is derived from a material selected from the group consisting of ethylene glycol, propylene glycol, glycerol, polyglycerol, polyethylene glycol, polypropylene glycol, poly(tetramethylene ether) glycol, pentaerythritol, dipentaerythritol, tripentaerythritol, trimethylolpropane, neopentyl glycol, a sugar, preferably, sucrose, and mixtures thereof. 
     
     
         11 . A lubricating member according to  claim 1 , wherein said metathesized unsaturated polyol ester is selected from the group consisting of metathesized Abyssinian oil, metathesized Almond Oil, metathesized Apricot Oil, metathesized Apricot Kernel oil, metathesized Argan oil, metathesized Avocado Oil, metathesized Babassu Oil, metathesized Baobab Oil, metathesized Black Cumin Oil, metathesized Black Currant Oil, metathesized Borage Oil, metathesized Camelina oil, metathesized Carinata oil, metathesized Canola oil, metathesized Castor oil, metathesized Cherry Kernel Oil, metathesized Coconut oil, metathesized Corn oil, metathesized Cottonseed oil, metathesized Echium Oil, metathesized Evening Primrose Oil, metathesized Flax Seed Oil, metathesized Grape Seed Oil, metathesized Grapefruit Seed Oil, metathesized Hazelnut Oil, metathesized Hemp Seed Oil, metathesized Jatropha oil, metathesized Jojoba Oil, metathesized Kukui Nut Oil, metathesized Linseed Oil, metathesized  Macadamia  Nut Oil, metathesized Meadowfoam Seed Oil, metathesized  Moringa  Oil, metathesized Neem Oil, metathesized Olive Oil, metathesized Palm Oil, metathesized Palm Kernel Oil, metathesized Peach Kernel Oil, metathesized Peanut Oil, metathesized Pecan Oil, metathesized Pennycress oil, metathesized Perilla Seed Oil, metathesized Pistachio Oil, metathesized Pomegranate Seed Oil, metathesized Pongamia oil, metathesized Pumpkin Seed Oil, metathesized Raspberry Oil, metathesized Red Palm Olein, metathesized Rice Bran Oil, metathesized Rosehip Oil, metathesized Safflower Oil, metathesized Seabuckthorn Fruit Oil, metathesized Sesame Seed Oil, metathesized Shea Olein, metathesized Sunflower Oil, metathesized Soybean Oil, metathesized Tonka Bean Oil, metathesized Tung Oil, metathesized Walnut Oil, metathesized Wheat Germ Oil, metathesized High Oleoyl Soybean Oil, metathesized High Oleoyl Sunflower Oil, metathesized High Oleoyl Safflower Oil, metathesized High Erucic Acid Rapeseed Oil, and mixtures thereof. 
     
     
         12 . A lubricating member for a razor cartridge according to  claim 1  comprising:
 from 20% to 90%, preferably from 20% to 80% by weight of a lipid phase comprising, 
 a) from 10% to 70% by weight of the lubricating member of a lipophilic structurant or mixture thereof, 
 b) from 10% to 70% by weight of the lubricating member of a liquid phase, wherein said liquid phase has a melting point below 45° C., and 
 wherein said lubricating member further optionally comprises from 1% to 40% by weight of a water soluble polymer or mixture thereof. 
 
     
     
         13 . A lubricating member according to  claim 12 , wherein said lipophilic structurant has a melting point of from 45° C. to less than 60° C. 
     
     
         14 . A lubricating member according to  claim 12 , wherein said lipophilic structurant has a melting point of from 45° C. to 5° C. less than the melting point of said water soluble polymer. 
     
     
         15 . A lubricating member according to  claim 12 , wherein said at least 90% of said water soluble polymer is in the form of discrete particulates dispersed within said lipophilic structurant. 
     
     
         16 . A lubricating member according to  claim 12 , wherein said water soluble polymer has a melting point of 60° C. or greater. 
     
     
         17 . A lubricating member for a razor cartridge according to  claim 1 , wherein said liquid phase comprises a component selected from natural oil, synthetic oil, natural butters, triglycerides, petrolatum, silicones and mixtures thereof. 
     
     
         18 . A lubricating member for a razor cartridge according to  claim 1 , wherein said liquid phase comprises a material selected from capric and or caprylic triglycerides, olive oil, shea butter, cocoa butter, isopropyl isostearate, petrolatum, dimethicone, phenylated silicones, silicone polyether block polymer and mixtures thereof. 
     
     
         19 . A lubricating member for a razor cartridge according to  claim 18 , wherein said liquid phase comprises a silicone polyether block copolymer or mixtures thereof. 
     
     
         20 . A lubricating member for a razor cartridge according to  claim 1 , wherein said liquid phase has a melting point of less than 40° C., more preferably less than 30° C., most preferably 25° C. or less. 
     
     
         21 . A lubricating member for a razor cartridge according to  claim 1 , wherein said lipophilic structurant is selected from C14-C20 alcohols, microcrystalline wax, stearyloxytrimethylsilane and mixtures thereof, and is preferably selected from cetyl alcohol, stearyl alcohol or mixtures thereof. 
     
     
         22 . A lubricating member for a razor cartridge according to  claim 1 , wherein said water soluble polymer comprises a polyethylene oxide polymer. 
     
     
         23 . A lubricating member for a razor cartridge according to  claim 1 , comprising from 25% to 35% of said lipophilic structurant, from 10% to 40% of said liquid phase and from 20% to 30% of said water soluble polymer. 
     
     
         24 . A lubricating member for a razor cartridge according to any  claim 1 , wherein said member comprises less than 5% by weight, preferably less than 1% by weight, more preferably is substantially free of a water insoluble polymeric structurant. 
     
     
         25 . A hair removal cartridge comprising a lubricating member according to  claim 1 . 
     
     
         26 . A method of manufacturing a lubricating member according to  claim 1 , comprising the steps of:
 i) providing a particulate of said water soluble polymer,   ii) melting said lipophilic structurant,   iii) adding said liquid phase and mixing,   iv) adding said water soluble polymer particles to said melted lipophilic structurant and liquid phase mixture and mixing,   v) adding optional ingredients and mixing,   vi) transferring the resultant mixture into a mould or container, and   vii) optionally cooling to 25° C.