The liquid Crothix Thickener works especially well in cold mix systems. The Liquid Crothix provides formulators with an easy to use thickener to create shampoos, body washes, shower gels and liquid soaps and other soap based-products that are economical, as well as rheologically appealing. Additionally, Crothix Thickener requires no neutralization, forms no nitrosamine byproducts, and often contributes to a conditioned feel in rinse-off products. Crothix Thickener can be used to thicken products like shampoos, bath gels, or liquid soaps.
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Additionally, the product must be stable and maintain a consistent rheology profile during storage in the warehouse, while in transportation, and while on the shelf for potentially many years. There are a number of commercial thickeners using esters of polyalkoxylated polyols and fatty acids to thicken surfactant-containing preparations.
This definition of Formula-1 is described at Column 2, lines The objective of the embodiments of this invention is a flowable liquid comprising a high concentration of the polyalkoxylated polyols polyester of Formula-2, organic carriers, and water. The n for each hydrophilic poly- alkylene glycol -arm may be an integer from and may be the same or different for different arms. The averaged number of n per hydrophilic poly- alkylene glycol arm is from 25 to , preferably from 30 to 85, and most preferably from 30 to As an example, Formula-3 is the chemical structure of the polyalkoxylated polyols ester of Formula-2, wherein Q is a radical of the organic polyols compound sorbitol.
The preferred R1 is derived from stearic, isostearic, oleic, or mixtures thereof. The most preferred R1 is oleic, and n1, n2, n3, n4, n5 and n6 are integers from , and the average n is from 25 to The organic solvents in principle are water-soluble or water-dispersible solvents. They are selected from the groups consisting of mono- or polyhydric alcohols and their ether, ester, or amide derivatives.
Examples of alcohols include, but not limited to, propylene glycol, 1. Hydrophobic thickeners are thickeners of small molecular weight that increase the viscosity of surfactants in water by affecting the surfactant assembly in water. One class of hydrophobic thickeners is alkanolamides which are condensates of fatty acids or triglycerides with alkanolamines such as monethanol amine, diethanolamine, monoisopropylamines, diisoproplyamines, and other alkoxylated amines.
Another embodiment of this invention is the personal care, cosmetic, dermatological, and pharmaceutical preparations containing the liquid thickener composition of the embodiments of this invention.
These surfactant-containing preparation, emulsions, and suspensions are, for example, shampoo, shower preparations, shower gels, foam baths, facial cleanser, hand soap, bar soap, shaving creams, hair conditioners, deodorants, lotions, creams, ointments, wet wipes, antiperspirants, sunscreens, etc.
The embodiments of the invention is also suitable as a thickener and rheology modifier for fabric care products, such as fabric conditioner and liquid laundry detergent. Based on the finished formulation, the cleansing preparation, and the preparation of the emulsions and suspensions according to this invention comprise preferably 0. The cleansing compositions according to embodiments of this invention can further comprise the following ingredients: all customary anionic, cationic, zwitterionic, nonionic, and amphoteric surfactants; all customary skin and hair benefit actives such as, for examples, cosmetic oils, petrolatum, vegetable oils, hydrogenated vegetable oils, UV filters, proteins, shining agent, anti-aging agents, amino acids, bioactives, humectants, conditioning polymers, silicones, cationic polymers, sucrose polyester, anti-dandruff zinc salt, hydroxyacids, skin lightening agents; all customary stabilizers, such as, for example, silica, hydroxystearic acid, hydrogenated castor oil, ethylene glycol distearate, bentonite and hectorite clay, fatty acid, fatty alcohol ; all customary thickeners such as, for example, hydroxyethyl cellulose, xanthan gum, polyacrylate, modified or non-modified starch, etc.
Definitions As used above, and throughout this disclosure, the following terms, unless otherwise indicated, shall be understood to have the following meanings. If a definition is missing, convention definition as known to one skilled in the art controls. Whenever a yield is given as a percentage, such yield refers to a mass of the entity for which the yield is given with respect to the maximum amount of the same entity that could be obtained under the particular stoichiometric conditions.
Concentrations that are given as percentages refer to mass ratios, unless indicated differently. An alkyl group can be unsubstituted or substituted. Alkyl groups containing three or more carbon atoms may be straight, branched, or cyclized.
The double bond of an alkenyl group can be unconjugated or conjugated to another unsaturated group. An alkenyl group can be unsubstituted or substituted. This liquid composition is very simple and easy to add to the vessel at room temperature or higher temperatures during the manufacturing of cosmetic, dermatological, and pharmaceutical compositions such as the shampoo, shower gels, etc.
The polyalkoxylated polyols polyester Formula-2 of this invention is prepared by one or more reaction stages: alkoxylation of Polyols compound, followed by esterification with fatty acids. The alkylene oxides are metered into the reactor under pressure over the course of hours. Ethylene oxide, propylene oxide, or a mixture of ethylene oxide and propylene oxide can be used, resulting in primary —OH group, secondary —OH group, or mixtures thereof.
Examples include, but not limited to, mannitol, sorbitol, galactitol, fucitol, iditol, inositol, volemitol, isomalt, maltitol, lactitol, maltotritol, maltotetraitol, and polyglycitol. Disaccharide, which is formed from two monosaccharides by dehydration via glycosidic linkage. Examples include but not limited to, trehalose, sucrose, lactose, maltose, etc. They contain six or more hydroxyl groups. Di-Pentaerythritol 4. Dextrin with a chemical structure of C6H10O5 n, where n is from 2 to Dendrimer polyols.
Polyglyceryls with 3 to 10 glycerin units, with six or more hydroxyl groups. After the reaction, each hydroxyl group of the starting polyols compounds will grow to a hydrophilic poly- alkylene glycol arm. The length of all arms may be the same or different, depending on the reaction conditions. The next reaction is an esterification reaction between the alkoxylated polyols compounds and the fatty acid, so that some or all of the hydrophilic poly- alkylene glycol arms are capped with fatty acid ester.
The preferred method is to use the esterification catalysts such as alkylbenzenesulfonic acid, methansulfonic acid, oranotin catalyst, oranotitanate catalyst, etc. For example, when the starting polyols compounds is sorbitol which will lead to six poly- alkylene glycol arms per sorbitol molecule, the mole ratio would be 2.
When it is trehalose, which will lead to eight poly- alkylene glycol arms, the mole ratio is 3. The most preferred one is to form more than at least four fatty ester capped arms. The Q of Formula-2 is defined as the radical of organic polyols compounds, having elements of carbon, hydrogen, oxygen, and nitrogen, and from 6 to 50 carbon atoms, and is saturated or unsaturated, straight, branched or cyclic chain, and independently substituted with from 6 to 25 groups having the formula of [ OA n—OR].
The n for the hydrophilic poly- alkylene glycol -arm is integers from , and may be the same or different for all arms. They are selected from the groups consisted of mono- or polyhydric alcohols and their ether, ester, or amide derivatives. Another embodiment of this invention is the cosmetic and pharmaceutical preparations containing the flowable liquid thickener composition.
Based on the finished formulation, the cleansing preparation, the preparations of emulsions and suspensions according to this invention comprise preferably 0. The cleansing compositions according to embodiments of this invention can further comprise the following components: all customary anionic, cationic, zwitterionic, nonionic, and amphoteric surfactants; skin and hair benefit actives such as , for examples, cosmetic oils, petrolatum, vegetable oils, hydrogenated vegetable oils, UV filters, proteins, shining agent, anti-aging agents, amino acids, bioactives, humectants, conditioning polymers, silicones, cationic polymers, sucrose polyester, anti-dandruff zinc salt, hydroxyacids, skin lightening agents, etc.
The cleansing compositions can be in the forms of liquid, paste, gels, or solid, and can be for personal cleansing, fabric cleansing, and hard surface cleansing. Each of these components as well as preferred and optional components in the cleansing compositions is described below. The details of these customary detersive surfactants are cited in many prior, such as U. Publishing Co. Anionic surfactants may include alkyl sulfate or alkyl ether sulfate including alkyl glyceryl ether sulfate. They may also include the sulfate-free anionic surfactants as illustrated below.
Aliphatic sulfonate class, including, but not limited to, a primary alkane e. C8-C22 sulfonate, primary alkane disulfonate, C8-C22 alkene sulfonate, alkyl glyceryl ether sulfonate, aromatic alkyl sulfonate, or C8-C22 Hydroxyalkane sulfonate. Alkyl sulfosuccinates including mono- and dialkl, e.
C6-C22 sulfosuccinates , alkyl and acyl taurate, alkyl and acyl glycinates, alkyl sulfoacetate, alkyl phosphates, alkyl phosphate ester, alkyoxy alkyl phosphate esters, and acyl lactates, C8-C22 monoalkyl succinates and maletes.
Fatty acyl isethionates, which are typically prepared by the reaction of an isethionates salts such as alkali metal isethionates and an aliphatic fatty acids of carbon atoms. Another class of anionic surfactants is soap or the salts of fatty acids. Sulfonate derivatives of alkyl polyglucoside; include for example, sodium laurylglucosides, hydroxypropylsulfonate, and sodium decylglucosides and hydroxypropylsulfonate. Other sulfate-free mild surfactants are the class of alkanoyl surfactants prepared from the amino acids.
The alkyl group is C8 to C20, preferably C12 to C16 alkyl group. This class of surfactants may include, for examples, alkanoyl sarcosinates, alkanoyl glycinate, and alkanoyl glutamate. The preferred anionic surfactants are the sulfate-free mild surfactants and their mixtures thereof. Amphoteric or zwitterionic surfactants are the surfactants with both of positive and negative charges.
They can be broadly described as derivatives of aliphatic quaternary ammonium, phosphnium, sulfonium compounds, in which the aliphatic radicals can be straight or branched chain, and wherein one of the aliphatic radicals is from C8 to C18 carbon atoms, and one contains an anionic group, e. Examples may include the customary betaine, such as N-alkyl-N, N-dimethyl ammonium glycinates, coco-amidopropyl betaine; CCalkyldimethyl-sulfopropylbetain, and amine oxides.
The proportion of the amphoteric surfactants in the composition according to this invention is 0. The non-ionic surfactants may include the alkoxylated aliphatic alcohol, acids, amides or alkyl phenol; long chain tertiary amine oxide; long chain tertiary phosphine oxides; dialkyl sulphoxides; sugar amides, such as described in U.
The preferred non-ionic surfactants are alkyl polyglucoside and alkyl polyglucamide. Cationic surfactants are the surfactants with positive charge groups.
The suitable cationic surfactants may include quaternary ammonium salts, such as di CC24 -alkyldimethylammonium chloride, CC24 -alkyltrimethylammonium chloride or sulfate, and N-acylaminoethyl-N,N-diethyl-N-methylammonium chloride. Other customary cationic surfactants are described in reference of U.
Liquid Crystal Inducers and Modifiers Liquid crystal inducers are small non-ionic molecules. They are believed to be solubilized in the mixtures of surfactants, and to change the packing of surfactant micelles to larger structure aggregates of different shape and size, such as lamellar liquid structures or vesicles, rod and cubic liquid crystals.
The alternative name for the liquid crystal inducers is hydrophobic thickeners. They include the class of alkanoamides, alkylamineoxides or mixtures thereof. Examples of this class include mono- and di-ethanolamides, isopropanolamides of fatty acids of carbon atoms, PPG-hydroxyethyl cocamides and alkylamineoxides of carbon atoms. Another class of chemicals in the liquid crystal inducers is alkoxylated alkyl alcohols of carbon atoms, preferably carbon atoms and ethylene oxide units.
It is believed that they modify the size and shape of the liquid crystals. Skin and Hair Benefit Actives These benefit actives may be water-soluble, water-insoluble, or water dispersible.
The water-soluble actives may include, but not limited to, polyols such as glycerin, diglycerin, sorbitol, propylene glycol, propanediol, patenol, and sugar; alpha-hydroxy acids and its salts as well as low molecular weight polyethylene glycols.
These non water-soluble benefit agents normally exist as emulsion or stripes in the composition. Non-limiting examples in U. Other miscellaneous skin and hair benefit actives may include vitamins, lipids sucrose esters, lanoline, cholesterol, etc. The suitable cationic polymers for the compositions according to this invention have the cationic charge density in the range of 0. Their cationic groups are nitrogen-containing moieties such as quaternary ammonium or cationic protonated amino moieties which can be primary, secondary, and tertiary amines.
Non-limiting examples may include copolymers of vinyl monomers having cationic protonated amines or quaternary ammonium functionalities with water-soluble spacer monomers such as acrylamide, methacrylamide, alkyl and dialkyl acrylamides, vinyl pyrrolidone, vinyl caprolactone, etc. Non-limiting specific examples are Polyquaternium, , -7, -6, , , Other suitable cationic polymers include polysaccharide polymers such as cationic cellulose derivatives, cationic starch derivatives, cationic guar gum derivatives, etc.
Stabilizers and Further Thickeners The stabilizers or structuring systems are used to form a crystalline stabilizing network in the composition, preventing the droplets of the lipophilic benefit agents from coalescing and phase separation in the product. Non-limiting examples include a hydroxyl-containing fatty acids, fatty ester, or fatty soap water-insoluble wax-like substance such as hydroxystearic acid, 9,dihydroxystearic acid, tri-9,dihydroxystearin, and trihydroxystearin. Other classes of stabilizers are the C ethylene glycol fatty acid ester, fumed silica, precipitated silica, smectite clay, etc.
Other customary stabilizer examples are disclosed in U.
Liquid Crothix Thickener