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WO2017075681A1 - Liquid thickener composition for cosmetic formulations for skin and hair cleansing, and for surface and fabric cleaners, and use of the liquid thickener composition - Google Patents

Liquid thickener composition for cosmetic formulations for skin and hair cleansing, and for surface and fabric cleaners, and use of the liquid thickener composition Download PDF

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Publication number
WO2017075681A1
WO2017075681A1 PCT/BR2016/050280 BR2016050280W WO2017075681A1 WO 2017075681 A1 WO2017075681 A1 WO 2017075681A1 BR 2016050280 W BR2016050280 W BR 2016050280W WO 2017075681 A1 WO2017075681 A1 WO 2017075681A1
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WO
WIPO (PCT)
Prior art keywords
thickener composition
liquid thickener
composition
skin
hair cleansing
Prior art date
Application number
PCT/BR2016/050280
Other languages
French (fr)
Portuguese (pt)
Inventor
Elvis Araujo BARRETO
Cristiane Aparecida Furtado CANTO
Rafaela PEPINELI
Rafael Fernando De Santi UNGARATO
Original Assignee
Oxiteno S.A. Indústria E Comércio
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Publication date
Application filed by Oxiteno S.A. Indústria E Comércio filed Critical Oxiteno S.A. Indústria E Comércio
Publication of WO2017075681A1 publication Critical patent/WO2017075681A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/85—Polyesters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34—Alcohols
    • A61K8/345—Alcohols containing more than one hydroxy group
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
    • A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34—Alcohols

Definitions

  • the present invention relates to a novel thickening composition
  • a novel thickening composition comprising a mixture of one or more alkoxylated polyol esters, one or more ethoxylated sorbitan esters and glycerol which is used to increase viscosity and facilitate product formulation.
  • liquid and gel cleansers for the maintenance of fabrics and surfaces and cosmetics for cleaning skin and hair.
  • Electrolytes are commonly used in cosmetic skin and hair cleansing products and surface sanitizers to achieve increased viscosity. However, there are some systems where this result cannot be obtained, either by the low concentration of assets or by the higher amount of nonionic surfactants. In these scenarios, the use of rheology modifiers is required to obtain the desired viscosity.
  • Thickeners have the ability to increase the viscosity of compositions, impacting on their stability, appearance and functionality.
  • thickeners impart, besides thickening, desirable characteristics of rheology to the environment in which they are found.
  • thickeners are classified into two broad groups: organic and inorganic.
  • Organic thickeners are in turn divided into the following classes: (1) oil phase thickeners, which are water insoluble and oil soluble, and are therefore called consistency agents. They are employed in creams, lotions and conditioners. Typical examples include fatty alcohols, fatty esters, triglycerides, natural and synthetic waxes;
  • aqueous phase thickeners which are normally insoluble in the oil phase.
  • Common examples are natural and synthetic polymeric thickeners, carbohydrates and polyglycolic fatty acid ethers.
  • Inorganic thickeners are generally electrolytes such as sodium chloride, sodium citrate, bentonites, clays, sodium or ammonium phosphate and aluminosilicates and are intended for thickening of the aqueous phase.
  • salts the most used is sodium chloride, due to its low cost.
  • Sodium sulfate and magnesium sulfate may also be used.
  • polymeric thickeners have a higher cost.
  • the prior art discloses some compositions used to increase the viscosity of products.
  • EP 0820758 B deals with a hair cosmetic product formulation in the form of a transparent or translucent oil-in-water microemulsion.
  • This composition comprises an oil phase and a water phase containing the following components: polyethoxylated oil-in-water emulsifier (s), propoxylated oil-in-water emulsifier (s), or polyethoxylated polyethoxylated oil-in-water emulsifier (s) or a mixture.
  • the composition optionally comprises other oil-in-water emulsifier (s) and cationic surfactant (s) which do not have film-forming properties.
  • US 7,994,111 B2 relates to a structured liquid detergent composition in the form of a liquid matrix made of an external structuring system of a cellulose web, water and a surfactant system that includes an anionic surfactant, a non-surfactant ionic, a cationic surfactant, an amphiphilic surfactant, a zwitterionic surfactant or mixtures thereof.
  • the liquid matrix has a flowability and / or strength of about 0.003 Pa at about 5.0 Pa at 25 ° C and provides suitable particle suspension capacities and shear reducing characteristics. .
  • JP 04794792 describes a stable high glycerol liquid detergent composition (greater than or equal to 10% by weight) comprising sulfosuccinic acid monoesters.
  • stability is provided by a stabilization system comprising a minimum salt level and a defined thickener.
  • a method of enhancing the stability of high glycerol compositions is also disclosed.
  • the technique still needs the development of an efficient composition that has the property of modifying rheology, in particular of increasing viscosity, of skin and hair cleansing cosmetics and surface and tissue cleaners, and being compatible with surfactants, co-surfactants, solvents, fragrances, preservatives, salts, pigments and / or dyes, as well as other compounds inert to the final cleaning performance.
  • the present invention describes a novel thickener composition, characterized by association with anionic, nonionic, amphoteric and zwiterionic surfactants present in cosmetic formulations for skin and hair cleansing and surface cleansers.
  • fabrics comprising a mixture of one or more alkoxylated polyol esters, one or more ethoxylated sorbitan esters and glycerol, which is used to increase viscosity in skin and hair cleansing cosmetic formulations and surface and tissue cleansers.
  • the composition is compatible with surfactants, co-surfactants, solvents, emollients, fragrances, preservatives, salts, pigments and / or dyes, as well as other compounds inert to final performance.
  • composition of the present invention is present in liquid form at room temperature and is easily dispersed in aqueous solution.
  • the composition is compatible with formulations comprising one or more surfactants, co-surfactants, solvents, emollients, fragrances, preservatives, salts, pigments and / or dyes, and other compounds inert to final performance.
  • the thickener composition of the invention comprises a mixture of one or more alkoxylated polyol esters, one or more ethoxylated sorbitan esters and glycerol.
  • Polyols suitable for use in this invention contain at least three free hydroxyls and are alkoxylated with ethylene oxide (EO) which reacts with their hydroxyls leading to polymer formation having between 300 and 500 moles of oxide per mol of polyol.
  • EO ethylene oxide
  • the polyol used is preferably sorbitol, which is alkoxylated with EO until an ethoxylated polyol containing between 300 and 500 moles of EO is obtained for each mol of sorbitol.
  • the ethoxylated sorbitol is then esterified with pure linear saturated fatty acids or in the form of mixtures, the most suitable being myristic acid, palmitic acid, oleic acid and preferably stearic acid.
  • composition which may comprise a mixture of ethoxylated sorbitol di-, tri-, tetra-, penta- and hexaesters, with tetraesters and pentaesters being in greater proportion to the total esters based on the content of hydroxyl and free acidity index of the composition, preferably making up more than 30% by weight of the total esters.
  • Such a mixture of one or more alkoxylated polyol esters is solid at room temperature and has high thickening power in aqueous solutions and can be incorporated into various cosmetic formulations for skin and hair cleansing and surface and tissue cleansers by heating. . Both handling and incorporation of the thickener composition described herein in surface and tissue cleanser formulations can be facilitated when the composition is in the liquid state at 25 ° C. In this case, for the composition to still maintain a high thickener power, it is recommended to add one or more surfactants, solvents and optionally water.
  • the thickening composition is in liquid form and comprises from 20 to 60% by weight of a mixture of one or more alkoxylated polyol esters containing between 300 and 500 moles of total EO for each mol of polyol, plus 20 to 40% by weight of ethoxylated sorbitan esters, from 3 to 25 wt% glycerol, or glycerol derivative, and optionally water up to 30 wt%.
  • compositions may be convenient when used in cosmetic formulations for skin and hair cleansing and surface and tissue cleansers with a final pH greater than or equal to 5.0 and the presence of surfactants, co-surfactants, solvents, fragrances, emollients, preservatives. , salts, pigments and / or dyes, and other compounds inert to the final cleaning performance.
  • the use of the thickener composition of the present invention to increase the viscosity of cosmetic formulations for skin and hair cleansing and surface and tissue cleansers has several advantages.
  • the thickener composition detailed in Table 1 may be incorporated directly into the surface and fabric cleaner formulations.
  • the viscosity of the formulations increases rapidly after the addition of the mentioned thickening composition.
  • a simple mixer provided with stirrer, operating at 25 ° C and under agitation.
  • Use of the thickener composition of the present invention eliminates predilution steps in water and / or pH adjustment by neutralizing cosmetic formulations for skin and hair cleansing and surface and tissue cleansers. This benefit of direct addition of the thickener composition to the product through simple agitation results in time, energy and resource preparation preparation.
  • another aspect of the present invention provides for the use of the aforementioned thickener composition for the preparation of skin and hair cleaning cosmetic and surface and tissue cleanser formulations particularly to increase the viscosity of the final product, absence and / or complement the use of electrolytes in the final product composition and ease in product formulation.
  • compositions were mixed in two detergent formulations containing the surfactants sodium lauryl ether sulfate (SLES) and linear alkylbenzene sulfonate (LAS) in proportions as shown in table 3 below.
  • SLES sodium lauryl ether sulfate
  • LAS linear alkylbenzene sulfonate
  • Table 5 shows the measured values for viscosity (in cps) for each of the thickeners in formulation B.
  • thickener composition of the present invention is effective in increasing viscosity in cosmetic formulations for skin and hair cleansing and surface and tissue cleaners, where preferably thickener composition 2 has the best results. of viscosity.

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Abstract

This invention describes a new thickener composition comprising a mixture of one or more alcoxylated polyol esters, one or more ethoxylated sorbitan esters and glycerol, used to increase the viscosity of cosmetic skin and hair cleansing products and of surface and fabric cleaners, as well as to make these products easier to formulate. The thickener composition described in this invention is compatible with a great variety of formulations of cosmetic skin and hair cleansing products and of surface and fabric cleaners comprising one or more surfactants, co-surfactants, solvents, fragrances, emulsifiers, preservatives, salts, pigments and/or colouring agents, besides other inert compounds with regard to the end performance, this composition being capable of increasing the viscosity thereof in a stable a measurable manner.

Description

COMPOSIÇÃO ESPESSANTE LÍQUIDA PARA FORMULAÇÕES DE COSMÉTICOS PARA LIMPEZA DA PELE E CABELOS E LIMPADORES DE SUPERFÍCIES E TECIDOS, E, USO DA  LIQUID THICKENING COMPOSITION FOR FORMULATION OF SKIN CLEANING AND SURFACE AND TISSUE HAIR AND CLEANERS, AND, USE OF
COMPOSIÇÃO ESPESSANTE LÍQUIDA  LIQUID THICK COMPOSITION
CAMPO DA INVENÇÃO FIELD OF INVENTION
[001] A presente invenção versa sobre uma nova composição espessante, compreendendo uma mistura de um ou mais ésteres de poliol alcoxilado, um ou mais ésteres de sorbitan etoxilado e glicerol, que é usada para aumentar a viscosidade e conferir maior facilidade na formulação de produtos líquidos e em gel de limpeza destinado à manutenção de tecidos e superfícies e cosméticos para limpeza da pele e cabelos.  The present invention relates to a novel thickening composition comprising a mixture of one or more alkoxylated polyol esters, one or more ethoxylated sorbitan esters and glycerol which is used to increase viscosity and facilitate product formulation. liquid and gel cleansers for the maintenance of fabrics and surfaces and cosmetics for cleaning skin and hair.
FUNDAMENTOS DA INVENÇÃO BACKGROUND OF THE INVENTION
[002] É comum o uso de eletrólitos em produtos cosméticos para limpeza da pele e cabelos e saneantes líquidos para lavagem de superfícies a fim de atingir um aumento de viscosidade. Entretanto, existem alguns sistemas em que este resultado não pode ser obtido, seja pela baixa concentração de ativos, ou pela maior quantidade de tensoativos não iónicos. Nestes cenários, é necessário o uso de modificadores de reologia para se obter a viscosidade desejada.  [002] Electrolytes are commonly used in cosmetic skin and hair cleansing products and surface sanitizers to achieve increased viscosity. However, there are some systems where this result cannot be obtained, either by the low concentration of assets or by the higher amount of nonionic surfactants. In these scenarios, the use of rheology modifiers is required to obtain the desired viscosity.
[003] Os espessantes possuem a capacidade de aumentar a viscosidade das composições, impactando em sua estabilidade, aparência e funcionalidade.  Thickeners have the ability to increase the viscosity of compositions, impacting on their stability, appearance and functionality.
[004] Grande parte dos espessantes conferem, além do espessamento, características desejáveis de reologia ao meio em que se encontram.  Most of the thickeners impart, besides thickening, desirable characteristics of rheology to the environment in which they are found.
[005] Basicamente, os espessantes são classificados em dois grandes grupos: os orgânicos e os inorgânicos. Os espessantes orgânicos dividem-se por sua vez nas seguintes classes: (1) os espessantes de fase oleosa, que são insolúveis em água e solúveis em óleos, sendo chamados, por isso, de agentes de consistência. São empregados em cremes, loções e condicionadores. Exemplos típicos incluem os álcoois graxos, ésteres graxos, triglicerídeos, ceras naturais e sintéticas; Basically, thickeners are classified into two broad groups: organic and inorganic. Organic thickeners are in turn divided into the following classes: (1) oil phase thickeners, which are water insoluble and oil soluble, and are therefore called consistency agents. They are employed in creams, lotions and conditioners. Typical examples include fatty alcohols, fatty esters, triglycerides, natural and synthetic waxes;
(2) os espessantes de fase aquosa, que são normalmente insolúveis na fase oleosa. Exemplos comuns são os espessantes poliméricos naturais e sintéticos, hidratos de carbono e os éteres poliglicólicos de ácidos graxos.  (2) aqueous phase thickeners, which are normally insoluble in the oil phase. Common examples are natural and synthetic polymeric thickeners, carbohydrates and polyglycolic fatty acid ethers.
(3) os espessantes inorgânicos são geralmente os eletrólitos, tais como cloreto de sódio, citrato de sódio, bentonitas, argilas, fosfato de sódio ou amónio e os aluminossilicatos e são destinados ao espessamento da fase aquosa.  (3) Inorganic thickeners are generally electrolytes such as sodium chloride, sodium citrate, bentonites, clays, sodium or ammonium phosphate and aluminosilicates and are intended for thickening of the aqueous phase.
[006] Dentre os sais, o mais utilizado é o cloreto de sódio, devido ao seu baixo custo. Pode-se utilizar também o sulfato de sódio e o sulfato de magnésio. Já os espessantes poliméricos apresentam um custo mais elevado.  Among the salts, the most used is sodium chloride, due to its low cost. Sodium sulfate and magnesium sulfate may also be used. On the other hand, polymeric thickeners have a higher cost.
[007] O estado da técnica apresenta algumas composições utilizadas para aumentar a viscosidade de produtos. The prior art discloses some compositions used to increase the viscosity of products.
[008] O documento EP 0820758 B trata de uma formulação de produto cosmético para cabelo na forma de uma microemulsão óleo-em-água transparente ou translúcida. Esta composição compreende uma fase óleo e uma fase água contendo os seguintes componentes: emulsificador(es) óleo- em-água polietoxilado, emulsificador(es) óleo-em-água propoxilado, ou emulsificador(es) óleo-em-água polietoxilado e polipropoxilado ou uma mistura. Além disso, este documento descreve que a composição compreende opcionalmente outro(s) emulsificante(s) óleo-em-água e tensoativo(s) catiônico(s) que não possui(em) propriedades formadoras de filme.  EP 0820758 B deals with a hair cosmetic product formulation in the form of a transparent or translucent oil-in-water microemulsion. This composition comprises an oil phase and a water phase containing the following components: polyethoxylated oil-in-water emulsifier (s), propoxylated oil-in-water emulsifier (s), or polyethoxylated polyethoxylated oil-in-water emulsifier (s) or a mixture. In addition, this document describes that the composition optionally comprises other oil-in-water emulsifier (s) and cationic surfactant (s) which do not have film-forming properties.
[009] Ainda, este documento revela que o teor total de emulsificante na emulsão é menor do que 2%. [0010] O documento US 7.994.111 B2 se refere a uma composição detergente líquida estruturada na forma de uma matriz líquida feita de um sistema estruturante externo de uma rede de celulose, água e um sistema tensoativo que inclui um tensoativo aniônico, um tensoativo não iônico, um tensoativo catiônico, um tensoativo anfifílico, um tensoativo zwitteriônico ou misturas destes. Further, this document discloses that the total emulsifier content in the emulsion is less than 2%. US 7,994,111 B2 relates to a structured liquid detergent composition in the form of a liquid matrix made of an external structuring system of a cellulose web, water and a surfactant system that includes an anionic surfactant, a non-surfactant ionic, a cationic surfactant, an amphiphilic surfactant, a zwitterionic surfactant or mixtures thereof.
[0011] De acordo com esta patente, a matriz líquida possui uma tensão de fluidez e/ou resistência de cerca de 0,003 Pa a cerca de 5,0 Pa a 25 °C e fornece capacidades de suspensão de partícula adequadas e características redutoras de cisalhamento.  According to this patent, the liquid matrix has a flowability and / or strength of about 0.003 Pa at about 5.0 Pa at 25 ° C and provides suitable particle suspension capacities and shear reducing characteristics. .
[0012] O documento JP 04794792 descreve uma composição detergente líquida estável com alto teor de glicerol (maior ou igual a 10% em peso) compreendendo monoésteres de ácido sulfosuccínico.  JP 04794792 describes a stable high glycerol liquid detergent composition (greater than or equal to 10% by weight) comprising sulfosuccinic acid monoesters.
[0013] Este documento revela que a estabilidade é fornecida por um sistema de estabilização compreendendo um nível mínimo de um sal e um espessante definido. Um método de intensificar a estabilidade das composições com alto teor de glicerol também é revelado. This document discloses that stability is provided by a stabilization system comprising a minimum salt level and a defined thickener. A method of enhancing the stability of high glycerol compositions is also disclosed.
[0014] Entretanto, a técnica ainda necessita do desenvolvimento de uma composição eficiente que tenha propriedade de modificar a reologia, em especial de aumentar a viscosidade, de produtos cosméticos para limpeza da pele e cabelos e líquidos limpadores de superfícies e tecidos, e sendo compatível com tensoativos, co-tensoativos, solventes, fragrâncias, preservantes, sais, pigmentos e/ou corantes, além de outros compostos inertes à performance final de limpeza. However, the technique still needs the development of an efficient composition that has the property of modifying rheology, in particular of increasing viscosity, of skin and hair cleansing cosmetics and surface and tissue cleaners, and being compatible with surfactants, co-surfactants, solvents, fragrances, preservatives, salts, pigments and / or dyes, as well as other compounds inert to the final cleaning performance.
SUMÁRIO DA INVENÇÃO SUMMARY OF THE INVENTION
[0015] A presente invenção descreve uma nova composição espessante, caracterizada pela associação com tensoativos aniônicos, não iónicos, anfotéricos e zwiteriônicos presentes em formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos, compreendendo uma mistura de um ou mais ésteres de poliol alcoxilado, um ou mais ésteres de sorbitan etoxilado e glicerol, que é usada para aumentar a viscosidade em formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos. The present invention describes a novel thickener composition, characterized by association with anionic, nonionic, amphoteric and zwiterionic surfactants present in cosmetic formulations for skin and hair cleansing and surface cleansers. fabrics, comprising a mixture of one or more alkoxylated polyol esters, one or more ethoxylated sorbitan esters and glycerol, which is used to increase viscosity in skin and hair cleansing cosmetic formulations and surface and tissue cleansers.
[0016] E objetivo da invenção prover uma composição espessante para formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos, cuja composição compreenda uma apresentação líquida com baixa, média e alta viscosidade e um pH final maior ou igual a 5,0. Além disso, a composição é compatível com tensoativos, co- tensoativos, solventes, emolientes, fragrâncias, preservantes, sais, pigmentos e/ou corantes, além de outros compostos inertes à performance final. It is an object of the invention to provide a thickener composition for cosmetic formulations for skin and hair cleansing and surface and tissue cleaners, the composition of which comprises a low, medium and high viscosity liquid presentation and a final pH greater than or equal to 5.0. In addition, the composition is compatible with surfactants, co-surfactants, solvents, emollients, fragrances, preservatives, salts, pigments and / or dyes, as well as other compounds inert to final performance.
DESCRIÇÃO DETALHADA DA INVENÇÃO DETAILED DESCRIPTION OF THE INVENTION
[0017] A composição da presente invenção está presente na forma líquida em temperatura ambiente, sendo de fácil dispersão em solução aquosa. Além disso, a composição é compatível com formulações que compreendem um ou mais tensoativos, co-tensoativos, solventes, emolientes, fragrâncias, preservantes, sais, pigmentos e/ou corantes, além de outros compostos inertes à performance final.  The composition of the present invention is present in liquid form at room temperature and is easily dispersed in aqueous solution. In addition, the composition is compatible with formulations comprising one or more surfactants, co-surfactants, solvents, emollients, fragrances, preservatives, salts, pigments and / or dyes, and other compounds inert to final performance.
[0018] A composição espessante da invenção compreende uma mistura de um ou mais ésteres de poliol alcoxilado, um ou mais ésteres de sorbitan etoxilado e glicerol. Os polióis adequados para uso nesta invenção contêm pelo menos três hidroxilas livres e são alcoxilados com óxido de etileno (EO), o qual reage com suas hidroxilas levando à formação de polímeros, apresentando entre 300 e 500 moles de óxido por mol de poliol.  The thickener composition of the invention comprises a mixture of one or more alkoxylated polyol esters, one or more ethoxylated sorbitan esters and glycerol. Polyols suitable for use in this invention contain at least three free hydroxyls and are alkoxylated with ethylene oxide (EO) which reacts with their hydroxyls leading to polymer formation having between 300 and 500 moles of oxide per mol of polyol.
[0019] Na presente invenção, o poliol utilizado é preferencialmente o sorbitol, o qual é alcoxilado com EO até que seja obtido um poliol etoxilado contendo entre 300 e 500 moles de EO para cada mol de sorbitol. Quanto maior o número de mols de EO, maior é a solubilidade em água. Em seguida, o sorbitol etoxilado é esterificado com ácidos graxos saturados lineares, puros ou na forma de misturas, sendo os mais adequados o ácido mirístico, o ácido palmítico, o ácido oleico e, preferencialmente, o ácido esteárico. Desta forma, obtém-se uma composição podendo compreender uma mistura de di-, tri-, tetra-, penta- e hexaésters de sorbitol etoxilado, sendo que tetraésteres e pentaésteres estão em maior proporção em relação ao total de ésteres com base no teor de hidroxila e no índice de acidez livre da composição, preferencialmente perfazendo mais que 30% em peso do total de ésteres. In the present invention, the polyol used is preferably sorbitol, which is alkoxylated with EO until an ethoxylated polyol containing between 300 and 500 moles of EO is obtained for each mol of sorbitol. The greater the number of moles of EO, the greater the solubility in water. The ethoxylated sorbitol is then esterified with pure linear saturated fatty acids or in the form of mixtures, the most suitable being myristic acid, palmitic acid, oleic acid and preferably stearic acid. Thus, a composition can be obtained which may comprise a mixture of ethoxylated sorbitol di-, tri-, tetra-, penta- and hexaesters, with tetraesters and pentaesters being in greater proportion to the total esters based on the content of hydroxyl and free acidity index of the composition, preferably making up more than 30% by weight of the total esters.
[0020] Um exemplo de triéster de sorbitol etoxilado é demonstrado abaixo An example of ethoxylated sorbitol triester is shown below.
Figure imgf000006_0001
Figure imgf000006_0001
[0021] Tal mistura de um ou mais ésteres de poliol alcoxilado é sólida em temperatura ambiente e apresenta alto poder espessante em soluções aquosas, podendo ser incorporada em diversas formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos por aquecimento. Tanto o manuseio quanto a incorporação da composição espessante aqui descrita nas formulações de limpadores de superfícies e tecidos podem ser facilitados quando a composição se encontra no estado líquido a 25°C. Neste caso, para que a composição ainda mantenha um alto poder espessante, é recomendada a adição de um ou mais tensoativos, solventes e, opcionalmente, água.  Such a mixture of one or more alkoxylated polyol esters is solid at room temperature and has high thickening power in aqueous solutions and can be incorporated into various cosmetic formulations for skin and hair cleansing and surface and tissue cleansers by heating. . Both handling and incorporation of the thickener composition described herein in surface and tissue cleanser formulations can be facilitated when the composition is in the liquid state at 25 ° C. In this case, for the composition to still maintain a high thickener power, it is recommended to add one or more surfactants, solvents and optionally water.
[0022] De acordo com a presente invenção, a composição espessante apresenta-se na forma líquida e compreende de 20 a 60% em peso de uma mistura de um ou mais ésteres de poliol alcoxilado contendo entre 300 e 500 moles de EO no total para cada mol de poliol, além de 20 a 40% em peso de ésteres de sorbitan etoxilado, de 3 a 25% em peso de glicerol, ou derivado de glicerol, e opcionalmente água com até 30% em peso. According to the present invention, the thickening composition is in liquid form and comprises from 20 to 60% by weight of a mixture of one or more alkoxylated polyol esters containing between 300 and 500 moles of total EO for each mol of polyol, plus 20 to 40% by weight of ethoxylated sorbitan esters, from 3 to 25 wt% glycerol, or glycerol derivative, and optionally water up to 30 wt%.
[0023] Um exemplo de composição espessante na forma líquida a An example of thickening composition in liquid form at
25°C é apresentada na Tabela 1 e Figura abaixo. Tal composição pode ser conveniente quando utilizada em formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos com pH final maior ou igual a 5,0 e presença de tensoativos, co-tensoativos, solventes, fragrâncias, emolientes, preservantes, sais, pigmentos e/ou corantes, além de outros compostos inertes à performance final de limpeza. 25 ° C is shown in Table 1 and Figure below. Such a composition may be convenient when used in cosmetic formulations for skin and hair cleansing and surface and tissue cleansers with a final pH greater than or equal to 5.0 and the presence of surfactants, co-surfactants, solvents, fragrances, emollients, preservatives. , salts, pigments and / or dyes, and other compounds inert to the final cleaning performance.
Tabela 1 - Composição espessante na forma líquida na temperatura de 25°C.
Figure imgf000007_0001
Table 1 - Thickener composition in liquid form at 25 ° C.
Figure imgf000007_0001
[0024] O uso da composição espessante da presente invenção para aumentar a viscosidade formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos apresenta diversas vantagens. Por exemplo, devido à natureza química dos polióis alcoxilados aqui empregados, a composição espessante detalhada na Tabela 1 pode ser incorporada diretamente às formulações dos limpadores de superfície e tecidos. The use of the thickener composition of the present invention to increase the viscosity of cosmetic formulations for skin and hair cleansing and surface and tissue cleansers has several advantages. For example, due to the chemical nature of the alkoxylated polyols employed herein, the thickener composition detailed in Table 1 may be incorporated directly into the surface and fabric cleaner formulations.
[0025] E possível observar que a viscosidade das formulações aumenta rapidamente após a adição da composição espessante citada. Em escala industrial, tal procedimento pode ser feito em um misturador simples, provido de agitador, operando em temperatura de 25°C e sob agitação. O uso da composição espessante da presente invenção elimina etapas de pré-diluição em água e/ou ajuste do pH, através de neutralização de formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos. Esse benefício de adição direta da composição espessante no produto através de uma agitação simples gera economia de tempo, energia e recurso no preparo das formulações. It can be seen that the viscosity of the formulations increases rapidly after the addition of the mentioned thickening composition. On an industrial scale, such a procedure can be done in a simple mixer provided with stirrer, operating at 25 ° C and under agitation. Use of the thickener composition of the present invention eliminates predilution steps in water and / or pH adjustment by neutralizing cosmetic formulations for skin and hair cleansing and surface and tissue cleansers. This benefit of direct addition of the thickener composition to the product through simple agitation results in time, energy and resource preparation preparation.
[0026] Portanto, outro aspecto da presente invenção prevê o uso da composição espessante acima mencionada para a preparação de formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos particularmente para aumentar a viscosidade do produto final, ausência e/ou complemento do uso de eletrólitos na composição do produto final e facilidade na formulação do produto.  Therefore, another aspect of the present invention provides for the use of the aforementioned thickener composition for the preparation of skin and hair cleaning cosmetic and surface and tissue cleanser formulations particularly to increase the viscosity of the final product, absence and / or complement the use of electrolytes in the final product composition and ease in product formulation.
EXEMPLO EXAMPLE
[0027] De modo a demonstrar a eficiência da composição da presente invenção, foram realizados testes de viscosidade usando dois espessantes com composições diferentes, conforme Tabela 2 abaixo.  In order to demonstrate the efficiency of the composition of the present invention, viscosity tests were performed using two thickeners with different compositions as per Table 2 below.
Tabela 2 - Composições espessantes utilizadas Table 2 - Thickener compositions used
Figure imgf000008_0001
Figure imgf000008_0001
[0028] Estas composições foram misturadas em duas formulações detergentes contendo os tensoativos lauril éter sulfato de sódio (SLES) e sulfonato de alquilbenzeno linear (LAS), em proporções como demonstrado na tabela 3 abaixo. These compositions were mixed in two detergent formulations containing the surfactants sodium lauryl ether sulfate (SLES) and linear alkylbenzene sulfonate (LAS) in proportions as shown in table 3 below.
Tabela 3 - Proporção da formulação detergente  Table 3 - Proportion of detergent formulation
Formulação base  Base Formulation
Total de SLES (parte LAS (parte Viscosidade  Total SLES (part LAS (part Viscosity)
Base  Base
tensoativo do total) do total) desejada (cps)  total) surfactant desired (cps)
A 10% 75% 25% 1500 At 10% 75% 25% 1500
B 18% 75% 25% 1500 [0029] A seguir, adicionou-se a composição espessante na faixa deB 18% 75% 25% 1500 Next, the thickener composition was added in the range of
1% a 1,5% na formulação base e mediu-se a viscosidade por meio de um viscosímetro. 1% to 1.5% in the base formulation and viscosity was measured by a viscometer.
[0030] A tabela 4 abaixo, indica os valores medidos para viscosidade Table 4 below indicates the measured values for viscosity
(em cps) para cada um dos espessantes na formulação A. (in cps) for each of the thickeners in formulation A.
Tabela 4 - Valores de viscosidade para os espessantes 1 e 2 na formulação A
Figure imgf000009_0001
Table 4 - Viscosity values for thickeners 1 and 2 in formulation A
Figure imgf000009_0001
[0031] A tabela 5 demonstrada a seguir, indica os valores medidos para viscosidade (em cps) para cada um dos espessantes na formulação B. Table 5 below shows the measured values for viscosity (in cps) for each of the thickeners in formulation B.
Tabela 5 - Valores de viscosidade para os espessantes 1 e 2 na formulação B
Figure imgf000009_0002
Table 5 - Viscosity values for thickeners 1 and 2 in formulation B
Figure imgf000009_0002
[0032] Em todos os testes realizados, o pH final das formulações ficou entre 7,4 e 7,5. In all tests performed, the final pH of the formulations was between 7.4 and 7.5.
[0033] Estes resultados demonstram que a composição espessante da presente invenção é eficiente no aumento da viscosidade em formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos, em que, preferencialmente, a composição espessante 2 apresenta os melhores resultados de viscosidade.  These results demonstrate that the thickener composition of the present invention is effective in increasing viscosity in cosmetic formulations for skin and hair cleansing and surface and tissue cleaners, where preferably thickener composition 2 has the best results. of viscosity.

Claims

REIVINDICAÇÕES
1. Composição espessante líquida para formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos, caracterizada pelo fato de compreender 20 a 60% em peso de uma mistura um ou mais ésteres de poliol alcoxilado contendo entre 300 e 500 moles de óxido de etileno (EO) no total para cada mol de poliol, 20 a 40% em peso de um ou mais ésteres de sorbitan etoxilado, e 3 a 25% em peso de glicerol ou derivado de glicerol.  1. Liquid thickener composition for cosmetic formulations for skin and hair cleansing and surface and tissue cleaners, comprising 20 to 60% by weight of a mixture of one or more alkoxylated polyol esters containing between 300 and 500 moles of ethylene oxide (EO) in total for each mol of polyol, 20 to 40 wt% of one or more ethoxylated sorbitan esters, and 3 to 25 wt% glycerol or glycerol derivative.
2. Composição espessante líquida de acordo com a reivindicação 1 , caracterizada pelo fato de compreender uma mistura entre di- , tri-, tetra-, penta- e hexaésters do poliol alcoxilado.  Liquid thickener composition according to claim 1, characterized in that it comprises a mixture of di-, tri-, tetra-, penta- and hexaesters of the alkoxylated polyol.
3. Composição espessante líquida de acordo com a reivindicação 1 ou 2, caracterizada pelo fato de que o teor mínimo de tetra- e pentaésteres corresponde a 30% em peso do total de ésteres do poliol alcoxilado.  Liquid thickener composition according to Claim 1 or 2, characterized in that the minimum content of tetra- and pentaesters is 30% by weight of the total esters of the alkoxylated polyol.
4. Composição espessante líquida de acordo com qualquer uma das reivindicações anteriores, caracterizada pelo fato de o poliol alcoxilado ser o sorbitol etoxilado.  Liquid thickener composition according to any one of the preceding claims, characterized in that the alkoxylated polyol is ethoxylated sorbitol.
5. Composição espessante líquida de acordo com a reivindicação 1 , caracterizada pelo fato de ainda compreender água em teor de até 30% em peso.  Liquid thickener composition according to Claim 1, characterized in that it further comprises water up to 30% by weight.
6. Composição espessante líquida de acordo com a reivindicação 4, caracterizada pelo fato de o ácido graxo utilizado para esterificar o sorbitol etoxilado ser selecionado do grupo que consiste de ácido mirístico, ácido palmítico, ácido oleico e ácido esteárico.  Liquid thickener composition according to Claim 4, characterized in that the fatty acid used to esterify the ethoxylated sorbitol is selected from the group consisting of myristic acid, palmitic acid, oleic acid and stearic acid.
7. Composição espessante líquida de acordo com a reivindicação 6, caracterizada pelo fato de que o ácido graxo utilizado para esterificar o sorbitol etoxilado é o ácido esteárico.  Liquid thickener composition according to claim 6, characterized in that the fatty acid used to esterify ethoxylated sorbitol is stearic acid.
8. Composição espessante líquida de acordo com qualquer uma das reivindicações anteriores, caracterizada pelo fato de que apresenta um pH final maior ou igual a 5,0. 8. Liquid thickener composition according to any one of the preceding claims, characterized in that it has a final pH greater than or equal to 5.0.
9. Uso da composição espessante líquida como definida em qualquer uma das reivindicações 1 a 8, caracterizado pelo fato de ser na preparação de formulações de produtos cosméticos para limpeza da pele e cabelos e limpadores de superfícies e tecidos.  Use of the liquid thickener composition as defined in any one of claims 1 to 8, characterized in that it is in the preparation of cosmetic formulations for skin and hair cleansing and surface and tissue cleansers.
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