Cosmetics & Toiletries Bench Reference | Ready-to-use thickening liquid polymer that thickens instantly in aqueous mediums following neutralization, to produce perfectly clear gel formulas. Capigel Acrylates copolymer: CAPIGEL 98 thickens surfactant media and has good resistance to electrolytes and polar solvents. Ready-to-use thickening liquid polymer.
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Compositions suitable for dyeing and bleaching hair comprising a phosphate ester compound and an oxidizing agent. The phosphate ester compound preferably comprises a mixture of monoester phosphates of alkoxylated cpaigel alcohols containing from about 12 to about 22 carbon atoms with diester phosphates of non-alkoxylated fatty alcohols containing from about 12 to about 22 carbon atoms.
Liquid Polymer
Preferably the compositions are in the form of oil-in-water emulsions. The compositions have good rheologies and improve the bleaching and dyeing of hair.
FIELD The present invention relates capgiel compositions suitable for bleaching caapigel dyeing hair and methods for bleaching hair or dyeing hair. Bleaching and dyeing or coloring of hair has become increasingly popular over the past years. Younger people may want to change the natural color of their hair to a more fashionable one, while older people may also use dyeing compositions to conceal gray hair.
As people grow older, the production of melanin slows, giving more and more gray hair over time. Melanin can also be purposely altered by chemical treatments to give lighter shades. The lightening is achieved by oxidizing the melanin pigments, usually with an oxidizing agent in alkaline solution, also called bleach.
Examples of oxidizing agents that can be used are hydrogen peroxide, potassium, sodium or ammonium salts of perborate or percarbonate, persulfate and percarbamide. Bleaches are also used during oxidative dyeing treatments. These molecules mainly belong to three classes of aromatic compounds: They are sufficiently small to diffuse in the hair shaft where, once activated by an oxidizing agent such as hydrogen peroxide, they further react with other precursors to form larger colored complexes.
Oxidative hair dye compositions commonly contain, in addition to the dye precursors and a source of peroxide, a variety of additional cosmetic and peroxide stabilizing agents. Oxidizing agents can activate oxidative dye precursors across a range of pH. However, it is known that enhanced dye oxidation can be achieved via the use of a hair-swelling agent HSA that can adjust the pH of the oxidizing solution.
Such HSA’s further enhance the oxidizing and dyeing process by swelling the hair fibers to aid both the diffusion of the peroxide and dyeing agents into the hair and enabling faster, more thorough dye oxidization and hair dyeing. Preferred hair-swelling agents for adjusting the pH of peroxide hair oxidizing compositions are aqueous alkaline solutions containing ammonia ammonium hydroxide or monoethanolamine MEA. Oxidative treatments of hair such as bleaching decoloration, lightening and oxidative dyeing give good results and are very commonly used.
They are however not without drawbacks. For example, the oxidizing agents used for bleaching and oxidative dyeing damage hair to some extent. Persistent efforts are made in the industry to improve the currently existing formulations. New hair dyes compositions are constantly synthesized and tested with the objective of providing compositions with improved rheology, improved colour uptake, gray coverage and colour evenness []. It has now been found that specific phosphate ester compounds can be advantageously used in combination with oxidizing agent in bleaching and capifel hair dye compositions at a pH of from about 8 to about For example, it was found that they could replace usual thickening agents such as acrylate copolymers for providing a suitable rheology to a bleaching composition, with the added benefit of providing better lightening to the bleached capige for the same amount of oxidizing agent.
They can also improve the colour uptake, gray coverage and colour evenness of dyeing compositions. They can also improve the efficiency of the dyeing process so that less dye can be used for the same benefit, thereby capigfl the cost of the formulation.
Finally they can give a suitable rheology to the compositions thereby avoiding dripping and providing a good suspension of aesthetic pigments. This emulsifier is said to increases the stability of emulsion while increasing the release of the oil component. The present invention cappigel to compositions suitable for bleaching or dyeing hair comprising: The present invention 9 relates to method of treating hair comprising the step of contacting hair with such compositions.
These and other features, aspects, and advantages of the present invention will become evident to those skilled in the art from a reading of the present disclosure. While the specification concludes with claims which particularly point out and distinctly claim the invention, it is believed the present invention will be better understood from the following description.
All cited references are incorporated herein by reference in their entireties. Citation of any reference is not an admission regarding any determination as to its availability as prior art to the claimed invention.
All percentages are by weight of total composition unless specifically stated otherwise. All ratios are weight ratios unless specifically stated otherwise.
Mammalian, preferably human hair is preferred.
However wool, fur and other keratin containing fibers are suitable substrates for the compositions according to the present invention. Phosphate Ester Compound []. The compositions of the present invention comprise a phosphate ester compound selected from: Preferably, the phosphate ester compound is a mixture of said mono-ester phosphates of capigwl fatty alcohols with said di-ester phosphates of non-alkoxylated fatty alcohols.
More preferably the ratio of mono-ester phosphates of alkoxylated fatty alcohols to di-ester phosphates of czpigel fatty alcohols is of from 1: These compositions have good emulsifying properties. The phosphate esters of the alkoxylated and non-alkoxylated fatty alcohols of the present invention can be formed by reacting xapigel and non-alkoxylated fatty alcohols, respectively, with phosphorous pentoxide P [] 2 O 5. This esterification process is well known in the art and detailed description of one method of carrying out the process can be found in U.
Capigel 98 |
As detailed in this patent, the reaction will usually result in a blend of mono- and di-phosphate esters. As is well known in the art, the ratio of mono- to di-phosphate esters formed during the esterification process depends on the operating conditions such as the temperature and the initial proportion of the reagents.
It is preferred that, when the phosphate ester compound comprises mono-ester phosphates of alkoxylated fatty alcohols, it also comprises di-ester phosphates of alkoxylated fatty alcohols. The alkoxylated fatty alcohols used can be the same for the mono- and di-esters. The phosphate ester compound then comprises a blend of mono- and di-ester phosphates of alkoxylated fatty alcohols containing from about 12 to about 22 carbon atoms and alkoxylated with from about 1 to about 50 moles of an alkylene oxide per mole of alkoxylated fatty alcoholsaid alkylene oxide being selected from ethylene oxide, propylene oxide and mixtures thereof.
Preferably the ratio of mono- to di-ester phosphates of alkoxylated fatty alcohol is from about The alkoxylated fatty alcohols used in the esterification process have the formula: It is also preferred that, when the phosphate esters compound comprises di-ester phosphates of non-alkoxylated fatty alcohols, it also comprises mono-ester phosphates of non-alkoxylated fatty alcohols.
The phosphate esters compound then comprises a blend of mono- and di-ester phosphates of non-alkoxylated fatty alcohols containing from about 12 to about 22 carbon atoms.
Preferably the ratio of mono- to di-ester phosphates of non-alkoxylated fatty alcohol is from about The non-alkoxylated fatty alcohols used for forming the phosphate esters of non-alkoxylated fatty alcohols preferably have the formula R—OH wherein R is selected from branched or unbranched alkyl or alkenyl groups having from about 12 to about 22 carbon atoms, preferably from about 14 to about 20 carbon atoms, even more preferably from about 16 to about 18 carbon atoms.
The compositions of the present invention preferably comprise at least 0. The compositions of the present invention comprise at least one oxidizing agent suitable for treating hair. Preferred oxidizing agents for use herein are water-soluble peroxygen oxidizing agents.
The oxidizing agents are valuable for the initial solubilisation and decolorisation of the melanin bleaching and accelerate the polymerization of the oxidative dye precursors oxidative dyeing in the hair shaft. Preferred water-soluble oxidizing agents are inorganic peroxygen materials capable of yielding hydrogen peroxide in an aqueous solution.
Water-soluble peroxygen oxidizing agents are well known in the art and include hydrogen peroxide, inorganic alkali metal peroxides such as sodium periodate and sodium peroxide and organic peroxides such as urea peroxide, melamine peroxide, and inorganic perhydrate salt bleaching compounds, such as the alkali metal salts of perborates, percarbonates, perphosphates, persilicates, persulphates and the like. These inorganic perhydrate salts may be incorporated as monohydrates, tetrahydrates, etc.
Mixtures of two or more such oxidizing agents can be used if desired. Preferred for use in the compositions according to the present invention is hydrogen peroxide. In conventional dyeing and bleaching compositions, levels of oxidizing agent are usually of from about 0.
Oxidative Hair Dye Precursors []. The compositions of the present invention may comprise oxidative hair dye precursors. Precursors can be used with couplers. Couplers are generally colorless molecules that can form colors in the presence of activated precursors.
CAPIGEL™ 98 – Sea-Land Chemical Company
The choice of precursors and couplers will be determined by the color, shade and intensity of coloration that is desired.
The precursors and couplers can be used herein, cpaigel or in combination, to provide dyes having a variety of shades ranging from ash blonde to caipgel.
Hair dye compositions will generally comprise from about 0. Preferred fatty alcohol is cetearyl alcohol, a mixture of cetyl and stearyl alcohol. Preferably the fatty alcohols and the phosphonate ester compound preferably a mixture of dicetyl phosphate and ceteth phosphate are comprised in the composition in an amount of from about 0.
Such a mixture of cetearyl alcohol, dicetyl phosphate and ceteth phosphate is commercially available from Croda, Inc under the Trademark Crodafos CES. The compositions of the present invention preferably further comprise a pH buffering agent. The pH buffering agent is present in an amount sufficient to provide the composition with a pH of from about 8 to about 12, preferably of from about 8.
Moreover, it is also intended that the compositions of the present invention may be complex compositions, which in addition to the ester phosphate compound and oxidizing agent comprise other components that may caligel may not be active ingredients.
The following examples further describe and demonstrate the preferred embodiments within the scope of the present invention. The examples are given solely for the purpose of illustration, and are not to be construed as limitations of the present invention since many variations thereof are possible without departing from its spirit and scope. The following example illustrates a bleaching lightening composition in the form of a kit comprising a lightening cream comprising ammonia and a hydrogen peroxide cream.
Both creams are mixed in equal proportion just before use in order to form the bleaching composition that is then immediately applied to the hair to be bleached.
Both creams can be produced by conventional methods well known by the person skilled in the art. Oil in water process []. Phase Inversion process []. For instance the water-soluble ingredients can be added to a proportion of the water at the start of the making process at ambient temperature, and allowed to dissolve. The fatty components including Crodafos RTM and the surfactants are then added to the heated water.
A controlled cooling and optional shearing process to form an emulsion pre-mix is then completed. Both pre-mixes are then combined and the remaining ingredients added e. The following example illustrates the superiority of phosphate ester compounds in hair dye compositions vs. Carbopol Aqua SF-1 available from Noveon is an acrylates copolymer commonly used in hair-care compositions as thickening agent.
Both compositions had similar rheology. Swatches of virgin hair were treated with these compositions in normal dyeing conditions and the resulting color was assessed. Hair treated with the composition comprising Crodafos CES showed a significantly better lightening than the hair treated with the composition comprising Carbopol RTM Aqua SF-1, although the level of oxidizing agent was identical.
This shows that the phosphate ester compounds can provide a hair bleaching composition with a suitable rheology while at the same time increasing the efficiency of the bleaching process. The following example illustrates an oxidative hair dye composition in the form of a kit comprising a dye cream and a hydrogen peroxide cream.