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EP-4734924-A1 - SILICONE FREE COMPOSITION FOR CONDITIONING THE HAIR

EP4734924A1EP 4734924 A1EP4734924 A1EP 4734924A1EP-4734924-A1

Abstract

A silicone free composition for conditioning the hair comprises: a) at least one volatile alkane; b) at least one fatty substance selected from unsaturated fatty compounds comprising a C12-C20 carbon chain, fatty acid ester oils, and mixtures thereof; and c) at least one thickener selected from ester-terminated poly (ester-amide) polymers, copolymers of styrene and olefin, and mixtures thereof. A process for conditioning the hair comprises applying the composition onto the hair.

Inventors

  • TANG, Jingting
  • KONG, Lingchao
  • YANG, LILI

Assignees

  • L'OREAL

Dates

Publication Date
20260506
Application Date
20230630

Claims (14)

  1. A silicone free composition for conditioning the hair comprising: a) at least one volatile alkane; b) at least one fatty substance selected from unsaturated fatty compounds comprising a C12-C20 carbon chain, fatty acid ester oils, and mixtures thereof; and c) at least one thickener selected from ester-terminated poly (ester-amide) polymers, optionally hydrogenated block, especially diblock or triblock, copolymers of styrene and olefin, preferably containing one ortwo ethylenic unsaturations, and/or preferably containing from 2 to 5 carbon atoms, and mixtures thereof.
  2. Composition according to claim 1, wherein the volatile alkane is selected from linear C 7 -C 14 alkanes, branched C 8 -C 16 alkanes and mixtures thereof.
  3. Composition according to any of claims 1 or 2, wherein the volatile alkane is present in an amount ranging from 1 wt. %to 90 wt. %, preferably from 10 wt. %to 80 wt. %, more preferably from 20 wt. %to 80 wt. %, relative to the total weight of the composition.
  4. Composition according to any of claims 1-3, wherein the unsaturated fatty compound is selected from unsaturated fatty alcohol comprising a C12-C20 carbon chain, preferably from unsaturated fatty monoalcohol comprising a C12-C20 carbon chain, more preferably, from linear unsaturated fatty monoalcohol comprising a C14-C20 carbon chain, most preferably, the unsaturated fatty compound is oleyl alcohol.
  5. Composition according to any of claims 1-4, wherein the fatty acid ester oil is selected from liquid monoesters of saturated or unsaturated, branched C 3 -C 22 aliphatic monoacids and of saturated or unsaturated, branched C 2 -C 20 aliphatic monoalcohols, preferably, the fatty acid ester oil is selected from liquid monoesters of saturated, linear or branched C 6 -C 20 aliphatic monoacids and of saturated, branched C 2 -C 6 aliphatic monoalcohols.
  6. Composition according to any of claims 1-5, wherein the fatty acid ester oil is selected from esters having the following formula: R 1 -C (=O) -O-R 2 wherein R 1 represents a branched alkyl radical of 3 to 22 carbon atoms, preferably of 6 to 20 carbon atoms, and R 2 represents a branched alkyl radical of 3 to 20 carbon atoms, preferably of 2 to 6 carbon atoms, preferably, the total number of carbon atoms of R 1 +R 2 may be 9 or more, preferably 12 or more, more preferably 16 or more, and most preferably 20 or more.
  7. Composition according to any of claims 1-6, wherein the fatty acid ester oil is selected from isohexyl laurate, isopropyl myristate, isopropyl palmitate, isopropy stearate, isopropyl isostearate, and mixtures thereof, preferably the fatty acid ester oil is isopropyl isostearate.
  8. Composition according to any of claims 1-7, wherein the fatty substance selected from unsaturated fatty compounds comprising a C12-C20 carbon chain, fatty acid ester oils and mixtures thereof is present in an amount ranging from 0.1 wt. %to 40 wt. %, preferably from 1 wt. %to 30 wt. %, more preferably from 2 wt. %to 20 wt. %, relative to the total weight of the composition.
  9. Composition according to any of claims 1-8, wherein the thickener is selected from: - resins prepared by reacting a diacid, a diamine, a polyol and a monoalcohol in which: (i) at least 50 equivalent%of said diacid comprises a polymerized fatty acid and (ii) at least 50 equivalent%of said diamine comprises ethylenediamine; - diblock copolymers, which are preferably hydrogenated, bearing styrene blocks and ethylene/C2-C4 alkylene blocks, more particularly a diblock copolymer, which is preferably hydrogenated, bearing styrene blocks and ethylene/ethylene or ethylene/propylene or ethylene/butylene blocks; - diblock copolymers, which are preferably hydrogenated, bearing styrene and ethylene/butadiene blocks; - triblock copolymers, which are preferably hydrogenated, of styrene-ethylene/propylene-styrene, styrene-ethylene/butadiene-styrene, styrene-isoprene-styrene or styrene-butadiene-styrene; - a mixture of styrene-butylene/ethylene-styrene triblock hydrogenated copolymer and of ethylene-propylene-styrene hydrogenated star polymer; and - mixtures thereof.
  10. Composition according to any of claims 1-8, wherein the thickener is selected from copolymers of hydrogenated dilinoleic acid, of ethylenediamine, of C2-C6 glycol and of C10-C22 monoalcohol, diblock copolymers, which are preferably hydrogenated, bearing styrene blocks and ethylene/C2-C4 alkylene blocks and mixtures thereof, preferably, the thickener is selected from hydrogenated styrene/isoprene copolymer, hydrogenated styrene/butadiene copolymer, styrene/isoprene copolymer, Bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer and mixtures thereof.
  11. Composition according to any of claims 1-10, wherein the thickener is present in an amount ranging from 0.1 wt. %to 15 wt. %, preferably from 1 wt. %to 10 wt. %, more preferably from 2 wt. %to 8 wt. %, relative to the total weight of the composition.
  12. Composition according to claim 1, comprising, relative to the total weight of the composition: a) from 20 wt. %to 80 wt. %of at least one volatile alkane selected from selected from linear C 7 -C 14 alkanes, branched C 8 -C 16 alkanes and mixtures thereof; b) from 2 wt. %to 10 wt%of oleyl alcohol and from 2 wt. %to 10 wt. %of at least one fatty acid ester oil selected from ethyl laurate, isohexyl laurate, hexyl laurate, isopropyl myristate, ethyl palmitate, isopropyl palmitate, isopropy stearate, isopropyl isostearate, and mixtures thereof; and c) from 2 wt. %to 8 wt. %of at least one thickener selected from hydrogenated styrene/isoprene copolymer, hydrogenated styrene/butadiene copolymer, styrene/isoprene copolymer, and Bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer.
  13. Composition according to any of claims 1-12, which further comprises a linear C15-C19 alkane and/or a branched C17-C19, in particular, abranched C17-C19 alkane, in an amount ranging from 2 wt. %to 30 wt. %, preferably from 5 wt. %to 25 wt. %, more preferably from 10 wt. %to 20 wt. %, relative to the total weight of the composition.
  14. A process for conditioning the hair comprising applying a composition as defined in any of claims 1-13 onto the hair.

Description

SILICONE FREE COMPOSITION FOR CONDITIONING THE HAIR TECHNICAL FIELD The present invention relates to a composition for conditioning the hair. In particular, the present invention relates to a silicone free composition for conditioning the hair. The present invention also relates to a process for conditioning the hair. BACKGROUND ART The hair is generally damaged and weakened by the action of external atmospheric agents such as light, weather, and/or the action of mechanical or chemical treatments such as brushing, combing, dyeing, bleaching, permanent and/or straightening. There are many products developed for conditioning the hair. Current hair oil market is dominated by oil contains silicones. However, many consumers favor silicone-free hair oil products, thus silicone-free oil products are growing worldwide. Therefore, it is desired to develop Si-free oil product for conditioning the hair, which can provide similar conditioning effect with silicone-based oil products and do not deliver greasy sensory. It is also desired that the Si-free oil product is stable so that the consumers can apply it conveniently. SUMMARY OF THE INVENTION An object of the present invention is thus to develop Si-free oil products for conditioning the hair, which is stable, can provide similar conditioning effect with silicone-based oil products and do not deliver greasy sensory. Another object of the present invention is to provide a process for conditioning the hair. Thus, according to a first aspect, the present invention provides a silicone free composition for conditioning the hair comprising: a) at least one volatile alkane; b) at least one fatty substance selected from unsaturated fatty compounds comprising a C12-C20 carbon chain, fatty acid ester oils, and mixtures thereof; and c) at least one thickener selected from ester-terminated poly (ester-amide) polymers, optionally hydrogenated block, especially diblock or triblock, copolymers of styrene and olefin, preferably containing one or two ethylenic unsaturations, and/or preferably containing from 2 to 5 carbon atoms, and mixtures thereof. According to a second aspect, the present invention provides a process for conditioning the hair comprising applying the composition as described above onto the hair. The inventors have now found that with the combination of at least one volatile alkane, at least one fatty substance as defined above, and at least one thickener as defined above, the composition of the present invention can provide similar conditioning effects as silicone based oil composition, for example a light and silky feeling. Other subjects and characteristics, aspects and advantages of the present invention will emerge even more clearly on reading the detailed description and the examples that follow. DETAILD DESCRIPTION OF THE INVENTION As used herein, unless otherwise indicated, the limits of a range of values are included within this range, in particular in the expressions "between…and…" and "from…to…" . As used herein, the term "comprising" is to be interpreted as encompassing all specifically mentioned features as well optional, additional, unspecified ones. As used herein, the use of the term “comprising” also discloses the embodiment wherein no features other than the specifically mentioned features are present (i.e. “consisting of” ) . Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the field the present invention belongs to. When the definition of a term in the present description conflicts with the meaning as commonly understood by those skilled in  the field the present invention belongs to, the definition described herein shall apply. Unless otherwise specified, all numerical values expressing amount of ingredients and the like used in the description and claims are to be understood as being modified by the term “about” . Accordingly, unless indicated to the contrary, the numerical values and parameters described herein are approximate values which are capable of being changed according to the desired performance obtained as required. As used herein, the expression "at least one" used in the present description is equivalent to the expression "one or more" . As used herein, the expression "silicone free composition" means that silicone is not added intentionally in the composition, in particular, the composition comprises no more than 2 wt. %of silicone, relative to the total weight of the composition, more particularly, the composition does not comprise silicone. According to the first aspect, the composition of the present invention comprises: a) at least one volatile alkane; b) at least one fatty substance selected from unsaturated fatty compounds comprising a C12-C20 carbon chain, fatty acid ester oils and mixtures thereof; and c) at least one thickener selected from ester-terminated poly (ester-amide) polymers, optionally hydrogenated block, especiall