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Dextrin myristate present invention provides a solid transparent aroma cosmetic that is transparent and has good stability over time.
Dextrin myristate conventional fragrance cosmetic is a composition such as honey beeswax and jojoba oil added with a fragrance, which is opaque and has a problem of separation.
As a technique for providing a cosmetic material having transparency and excellent usability, a technique of blending a dextrin fatty acid ester and a heavy liquid isoparaffin an α-olefin oligomer and a dextrin fatty acid ester and / or 12 There exists the technique which mix blends hydroxy stearic acid.
CAS Number: 93792-77-9
IUPAC Name: Tetradecanoic acid, dextrin ester
Other names: Myristic Acid Dextrin Ester, Starch Myristate, Dextrin Ester of Myristic Acid, Myristoyl Dextrin, Lipophile DM (INCI trade name), Lipo Dextrin M, CosmoSurf DM, Emulsan DM, Plantemul DM, Myristated Dextrin, Lipolami DM, Dextrin (C14) Ester, Emulsifier DM14, Starch Ester of Myristic Acid, Tego Feel DM (Evonik product line – check exact match), Natural Emollient DM, EcoFeel DM, Hydrocarbonated Dextrin Myristate, Bioester DM,
In addition, as a technique for providing a cosmetic having excellent moldability, transparency, and usability, a technique in which 12-hydroxystearic acid and dextrin fatty acid ester are blended, dextrin fatty acid ester and polyoxy A technique characterized by blending ethylene beeswax and a liquid oil component , at least N-acyl-L-acidic amino acid dialkylamides such as N-2-ethylhexanoyl-L-glutamic acid dibutylamide There is a technique for solidification using a gelling agent of an oily base material containing one kind and at least one kind of monovalent lower alcohol such as 3-methoxy-3-methylbutanol.
Under such circumstances, the present inventors have intensively studied to solve the above problems, and as a result, have found that the above problems can be solved by blending a dextrin fatty acid ester, a higher alcohol and a fragrance, and complete the present invention.
Dextrin myristate came to.
According to the present invention, a fragrance containing a fragrance component having a high HLB value and a solvent can also be blended, and the obtained cosmetic can provide a solid transparent fragrance cosmetic excellent in transparency, stability and fragrance sustainability.
Although the compounding quantity of the component dextrin fatty acid ester used for this invention is not specifically limited, 5 to 40% is preferable with respect to the total amount of all the components.
If the blending amount is less than this range, the solid transparent aromatic cosmetic product becomes too soft, and if it is more, it is too hard and the usability is poor.
Dextrin myristate component higher alcohol used in the present invention is octyldodecanol, isostearyl alcohol and hexyldecanol which are liquid at room temperature.
Dextrin myristate blending amount of the higher alcohol used in the present invention is not limited, but is preferably 20 to 93% with respect to the total amount of all components.
Dextrin myristate component fragrance used in the present invention includes natural essential oils and synthetic fragrances containing a fragrance component having a high HLB value and a solvent.
Although the compounding quantity of the fragrance flavor used for this invention is not specifically limited, 1 to 35% is preferable with respect to the total amount of all the components.
If the blending amount is less than this range, the fragrance is weak and inferior in sustainability, and if it is large, two-phase separation may occur.
In addition to the above components, the solid transparent aromatic cosmetic of the present invention includes higher fatty acids, various alcohols, various resins, colored coloring materials, pigments, hydrophobizing agents, pigments, thickeners, humectants, antioxidants.
An agent, an antiseptic, an antifoaming agent, other chemicals, and the like can be blended within a range not impairing the effects of the present invention.
Dextrin myristate following physical and chemical properties have been reported for dextrin myristate:
Physical state: powder or particles
Color: white to pale yellow
Odor: odorless or characteristic
Melting point/freezing point: 50 ~ 150˚C
Flash point: 210˚C
Solubility: insoluble in water, methanol, and ethanol; soluble in xylene, benzene, chloroform, and carbon
tetrachlori
Dextrin myristate has the following typical compostion:
Dextrin myristate (> 95%)
Moisture, based on loss of drying (< 1%)
Myristic acid (< 5%)
3-Methylpyridine (beta-picoline) (< 300 ppm)
DMF (< 5 ppm, detection limit)
Methanol (< 5 ppm, detectioin limit)
Dextrins or cyclodextrins are breakdown products of starch (maltodextrins).
Myristates are salts or esters of myristic acid (tetradecanoic acid).
Function (s) of this ingredient in cosmetic products
ANTI-CAKING PRODUCTS
Prevents powdered products from sticking together
SURFACTANT (EMULSIFYING) - EMULSIFIER
Enables the formation of finely divided mixtures of oil and water (emulsions)
SURFACTANT (CLEANING)
Washing-active substance for cleaning skin, hair and / or teeth
Background information on use in cosmetics
Surfactants are so-called washing-active substances and are of great importance in cosmetics for cleaning skin and hair.
Surfactants (from the Latin “tensus” = tensioned) are substances that, due to their molecular structure, are able to reduce the surface tension of a liquid.
Dextrin myristate this way it is possible that two liquids that are actually immiscible with one another, such as oil and water, can be finely mixed.
Due to their properties, surfactants are used in a variety of ways in cosmetics: They can clean, create foam and also act as emulsifiers and mix substances with one another.
Dextrin myristate shampoos, shower gels and soaps, for example, surfactants are used to wash away fat and dirt particles from the body with water.
Surfactants are also used in toothpastes.
Here they promote the quick and complete dissolution and distribution of the paste in the mouth while brushing the teeth.
The surfactants used in cosmetic products are mainly produced synthetically on the basis of vegetable raw materials.
Surfactants are often used in combination in order to meet all the desired requirements - such as dirt removal and foam formation combined with good skin tolerance - in the best possible way.
Dextrin myristate , through a skilful combination of a surfactant - considered on its own - with poor skin tolerance, but very good dirt dissolving properties with a very mild, skin-friendly surfactant, a product with good cleaning properties with just as good skin compatibility is obtained.
Emulsifiers are often used as auxiliaries in cosmetics.
Dextrin myristate make it possible to bring components that are actually immiscible with one another, such as oil and water, into a permanent emulsion.
In cosmetic products, both aqueous and oily care and active ingredients can be used in a single product.
Emulsifiers are able to do this because their molecules consist of a fat-loving (lipophilic) and a water-loving (hydrophilic) part.
Dextrin myristate allows you to reduce the interfacial tension that actually exists between two incompatible substances such as fat and water.
Emulsifiers are used in particular for creams, lotions and cleaning agents.
In the meantime, however, emulsifiers are much more than just auxiliary substances that keep an emulsion stable.
Fatty acid esters based on sugar, lecithin or glycerol monodistearate, for example, help to improve the skin's moisture balance and are therefore also considered cosmetic active ingredients.
Changes the interfacial tension of liquids like water and oil so that they can be mixed together, in short it has an emulsifying effect
The dextrin fatty acid ester is an ester of dextrin or reduced dextrin and a higher fatty acid, and any dextrin fatty acid ester commonly used for cosmetics may be used without any limitation.
Preferably used is dextrin or reduced dextrin having an average degree of saccharide polymerization of 3 to 100.
Dextrin myristate is preferred to use a saturated C8-C22 fatty acid for the fatty acid constituting a dextrin fatty acid ester.
Specific examples thereof include dextrin palmitate, dextrin oleate, dextrin stearate, dextrin myristate, and dextrin (palmitate/2-ethylhexanoate).
A series of fully-acylated dextrin esters (DS = 3) with varying side-chain lengths (C2–12) were synthesized by heterogeneous esterification using trifluoroacetic anhydride/carboxylic acid.
Dextrin myristate influence of side-chain lengths on structure and properties of dextrin esters were investigated by structural, thermal, mechanical and hydrophobic analysis.
Dextrin myristate thermal stability of dextrin was enhanced by esterification, presenting ca. 40–60 °C higher decomposition temperatures than that of neat-dextrin.
Dextrin myristate transition temperatures of melting and crystallization were not observed for all dextrin esters because they were amorphous polymers.
Dextrin myristate glass transition temperature (Tg) was not observed in dextrin but was observed in dextrin esters.
As increasing side-chain length, Tgs of dextrin esters decreased ranged from 162.2 °C (C2) to 49.2 °C (C12).
Colorless and transparent dextrin ester films were prepared to measure the film properties.
Tensile strength of dextrin ester films tended to decrease with increasing side-chain lengths, whereas the elongation at break increased.
And, dextrin ester films showed significantly increased hydrophobicity with a contact angle of up to 102° (C12).
Anti-Agglomerating: Ensures the fluidity of solid particles and limits their agglomeration in cosmetic products in powder or hard mass
Emulsifying agent: Promotes the formation of intimate mixtures between immiscible liquids by modifying the interfacial tension (water and oil)
Surfactant: Reduces the surface tension of cosmetics and contributes to the uniform distribution of the product during its use
What is Dextrin Myristate?
Dextrin Myristate functions in skincare and cosmetics as a/an anti-caking, emulsifying, cleansing surfactant ingredient.
