Patent Application
20230111799
The present invention relates to a personal care composition, its process of preparation and use in the cosmetic industry.
U.S. Pat. No. 3636017 (assigned to M/s Glyco Chemicals Inc, referred to herein as '017) discloses use of lactylic acid esters of fatty acids as additives for bakery products. However, the present invention suggests a personal care composition comprising apolyglycerol ester product and its use.
U.S. Pat. Application Publication No. 2017/0071836 (applicant M/w Henkel AG, referred to herein as '836) exemplifies use of fatty acyl lactylates as cosmetic cleansing agents. However, the present invention prepares a personal care compositioncomprising a polyglycerol ester product and its use.
Chinese Patent application No. 106588648 discloses preparation of polyglycerol esters wherein the polyglycerol is a tetramer. However, it suggests use of the polyglycerol esters as moisturizers. The present invention prepares a personal care composition comprising a polyglycerol ester and its use in various personal care compositions such as shampoos, face washes and the like.
The object of the present invention is to provide a personal care composition with a polyglycerol ester product, its process of preparation and use as shampoo, scalp cleanser, hair cleanser, shower preparations, showergels, foam baths, gels, body wash, facial cleanser, face wash, makeup remover, cleansing wipe, sunscreen, foundation and the like.
Another object of the present invention is to provide sulfate, ethylene oxide, amide, silicone free personal care composition with pH of 3 to 5.
A personal care composition comprising
Mild personal care compositions with stable emulsions are in demand by consumers.
It is known that sulfates in personal care compositions may damage cells and strip away natural oils and hair proteins & ethanolamide based surfactants may comprise nitroso compounds which are considered harmful when in contact with skin.
In view of the same we have developed a personal care composition which is stable and mild. The personal care composition of the present invention is user friendly as it is sulfate free, amide free, ethylene oxide free, silicone free, paraben free and formaldehydefree.
According to one embodiment of the present invention is the personal care composition comprising polyglycerolester product of 5 parts of lactic acid, 5 parts of lauric acid and 90 parts of polyglycerol; one or more ingredient(s) and water; wherein the polyglycerol is with an average polymeric degree of 2-5.
Typically, the personal care composition of the present invention will comprise 5 to 50% by weight polyglycerolester product, 5 to 50% by weight of one or more ingredient(s) and 10 to 90% by weight water.
The polyglycerol ester product used in the personal care composition of the present invention comprises 5 parts by weight of lactic acid, 5 parts by weight of lauric acid and 90 parts by weight of polyglycerol; wherein the polyglycerol is with an average polymericdegree of 2 - 5.
The polyglycerol used to prepare polyglycerol ester product is a mixture of mainly diglycerol, triglycerol, tetraglycerol and pentaglycerol. Typically, the polyglyerol comprises 20-40% by weight of diglycerol, 30-50% by weight of triglycerol, 5-15% by weight of tetraglycerol and 2-5% by weight pentaglycerol.
Typically, the average molecular weight of the polyglycerol used to prepare the polyglycerol ester product usedin the personal care composition of the present invention is 180-250 gms.
It is well known in the art that surfactants with HLB values greater than 10 are hydrophilic and will help in solubilization. The polyglycerol ester product used in the personal care composition of the present invention imparts HLB value of 15-20 rendering it hydrophilic properties useful in solubilizing other ingredients used in the composition.
The polyglycerol ester product used in the personal care composition of the present invention has hydroxylvalue of 900 to 1200 mg/KOH/gm.
The personal care composition comprises ingredients typically used in personal care compositions to enhance the properties useful to the end user such as feel, fragrance, appearance, flowability, emulsion stability, ease in handling and the like. The ingredients may be selected from anionic, cationic, zwiterrionic, nonionic, amphoteric surfactants; superfatting agents, stabilizers, biogenic active ingredients, humectants, preservatives, pearlizing agents, dyes and pigments, fragrances, solvents, opacifiers, further thickeners and dispersants, protein derivatives such as gelatin, collagen hydrolysates, polypeptides, fatty alcohols, odor masking agents and enzymes.
The personal care composition further comprises water as a vehicle.
The personal care composition of the present invention provide stable emulsions and demonstrate better foaming properties and is mild to human skin and hair as it is sulfate, ethylene oxide, amide, silicone free personal care composition with pH of 3 to 5.
The personal care composition of the present invention is with pH of 3 to 5 which helps in maintaining stability of the emulsion form of the composition.
The personal care composition of the present invention is used as shampoo, scalp cleanser, hair cleanser, shower preparations, showergels, foam baths, gels, body wash, facial cleanser, face wash, makeup remover, cleansing wipe, sunscreen, foundation and the like.
The personal care composition of the present invention is tested for Counter irritancy using Semi-oclusive patch test and found to be satisfactory even in combination with commonly used irritating surfactants like sodium laureth sulfate.
According to second embodiment of the present invention is the process for the preparation of polyglycerolester product used in the personalcare composition.The process for the preparation of the polyglycerol ester product comprises reacting polyglycerol with lauric acid and lactic acid at temperature ranging from 150 to 250° C. under inert atmosphere. The progress of the reaction is monitored by acid value. The reaction is terminated when the acid value may be between 1 to 2 mg KOH/g. The reaction mixture cooled and worked up.
The polyglycerol used to prepare polyglycerol ester product is a mixture of mainly diglycerol, triglycerol, tetraglycerol and pentaglycerol. Typically, the polyglyerolcomprises 20-40% by weight of diglycerol, 30-50% by weight of triglycerol, 5-15% by weight of tetraglycerol and 2-5% by weight pentaglycerol.
Typically, the average molecular weight of the polyglycerol used to prepare the polyglycerolester product used in the personal care composition of the present invention is 180-250 gms.
The mole ratio of polyglycerol: lauric acid : lactic acid may be between 8: 0.5 : 0.5 to 12 : 2 : 2.
According to yet another embodiment of the present invention is the process forthe preparation of the personal care composition comprising mixing polyglycerol ester product and ingredient(s) in water as a vehicle. The process may comprise heating the polyglycerol ester product and/or ingredients in waterto enable dissolution followed by cooling.
The following examples illustrate preferred embodiments in accordance with the present invention without limiting the scope of the invention.
Polyglycerol (2070 gm/9.7 mole) is added to a clean round bottom flask fitted with a stirrer, sparger for Nitrogen gas bubbling and temperature probe. The round bottom flask is heated to 75° C. under gentle nitrogen flow to provide inert atmosphere and lauric acid (115 gm/0.58 mole) is added. Once the mass appears homogeneous lactic acid (130 gm/1.28 mole) is added. The temperature of the reaction mixture is raised under stirring to 220° C. The progress of the reaction is monitored by acid value of the reaction and when it reaches ~ 1.5 mg KOH/g, the reaction is terminated by lowering the temp to ~ 100° C., residual water evacuated under vacuum, the reaction mass is filtered and the poyglycerol ester product analysed. Yield 2230 g.
To the main vessel add deionized water. Dissolve disodium EDTA and disperse Methocel 40-101 with rapid mixing in the deionized water. Heat to 60° C. and reduce mixerspeed. Add Iselux LQ-CLR-SB, Chembetain CGF, Finester 2009, Finester 6128, Finamul 97, Finester EG 2010 and maintain the temperature to 60° C. Mix until uniform. Cool to 40° C. and add remaining ingredients. Mix until uniform, while cooling to room temperature.
Example 5: Personal Care Compositions of the present invention
Weigh waterin main vessel and dissolve benzethonium chloride. Premix remaining ingredients until clear and uniform and add to main vesselto prepare a solution.Saturate non-woven wipes with the solution.
Weigh water in main vessel. Disperse Methocel under rapid mixing. Premix remaining ingredients until clear and uniform and add to main vessel.
Weigh waterin main vessel, dissolve glycerin and butylene Glycol, disperse KeltrolCG-T. When the mixture is uniform disperse Eumulgin SG. Heat to 80° C. until uniform, then cool to 40° C.
Combine Caprylic/CapricTriglyceride, FinsolvTN, Diisopropyl Adipate, Finester 2009, FinesterLAN-S, Z-Cote in auxilliary vessel. Heat to 60-70° C. and homogenize to disperse. Cool to 40° C. Mix and then add this mixture to main vessel.
Homogenize to emulsify, when uniform add fragrance and diocide under regular mixing.
Weigh water in main vessel, dissolve butylene glycol, sodium PCA and disperse mica. Homogenize until uniform. Add isododecane, isononyl isononanoate, Finester 2009, Finester LAN-S, Finester 6080, Caprylyl Methicone, titanium dioxide3328 in separate vessel. Homogenize until uniform and add to main vessel with homogenization. While continuing to homogenize add gransil PC-12, red iron oxide, yellow iron oxide, black iron oxide. Homogenize until completely uniform. Add diocide.
Example 6: Finester2009 Study for Counter Irritancy using Semi-oclusive patch test to test skin irritation/sensitization
As a control a 30% solution of a common commercial sodium laureth sulfate was prepared. This is a common use level, yielding 8.4% active surfactant.
The test material KL5-47/2 has 5% Finester 2009 in addition to the identical level of sodium laureth sulfate and is found to be extremely mild even in the presence of a known irritant sodium laureth sulfate.
| Number | Date | Country | Kind |
|---|---|---|---|
| IN201921031568 | Aug 2019 | IN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/IN2020/050689 | 8/4/2020 | WO |
