EP1915407A2 - Copolymeres a base de n-vinylcaprolactame et leur utilisation comme solubilisants - Google Patents

Copolymeres a base de n-vinylcaprolactame et leur utilisation comme solubilisants

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Publication number
EP1915407A2
EP1915407A2 EP06792663A EP06792663A EP1915407A2 EP 1915407 A2 EP1915407 A2 EP 1915407A2 EP 06792663 A EP06792663 A EP 06792663A EP 06792663 A EP06792663 A EP 06792663A EP 1915407 A2 EP1915407 A2 EP 1915407A2
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EP
European Patent Office
Prior art keywords
copolymers
use according
preparations
water
alkyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP06792663A
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German (de)
English (en)
Inventor
Nathalie Bouillo
Marianna Pierobon
Gerhard Rössler
Rainer Dobrawa
Kathrin MEYER-BÖHM
Ronald Frans Maria Lange
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BASF SE
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BASF SE
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Application filed by BASF SE filed Critical BASF SE
Priority to EP06792663A priority Critical patent/EP1915407A2/fr
Publication of EP1915407A2 publication Critical patent/EP1915407A2/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
    • C08F226/06—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen

Definitions

  • the invention relates to the use of copolymers based on N-vinylcaprolactam as solubilizers of sparingly water-soluble substances. Furthermore, the invention relates to corresponding preparations for the preparation of preparations for the treatment of humans, animals and plants and for technical applications fertilize.
  • Solubilization is the solubilization of in a certain solvent, in particular water, difficultly or insoluble substances by surface-active compounds, the solubilizers to understand.
  • Such solublisers are able to convert poorly water-soluble or water-insoluble substances into clear, at most opalescent aqueous solutions, without the chemical structure of these substances undergoing any change (see Römpp Chemie Lexikon, 9th edition, Bd.5. P. 4203, Thieme Verlag, Stuttgart, 1992).
  • the solubilizates prepared are characterized in that the poorly water-soluble or water-insoluble substance is colloidally dissolved in the molecular associates of the surface-active compounds which form in aqueous solution - the so-called micelles.
  • the resulting solutions are stable single-phase systems that appear optically clear to opalescent and can be prepared without energy input.
  • solubilizers can improve the appearance of cosmetic formulations as well as food preparations by rendering the formulations transparent.
  • the bioavailability and thus the effect of drugs can be increased by the use of solubilizers.
  • solubilizers for pharmaceutical drugs and cosmetic agents mainly surfactants such as ethoxylated (hydrogenated) castor oil, ethoxylated sorbitan fatty acid esters or ethoxylated hydroxystearic acid are used.
  • solubilizers described above, used so far, show a number of application disadvantages.
  • EP-A 876 819 describes the use of copolymers of at least 60% by weight of N-vinylpyrrolidone and amides or esters with long-chain alkyl groups.
  • EP-A 948 957 is the use of copolymers of monoethylenically unsaturated carboxylic acids such as acrylic acid and hydrophobically modified comonomers such as N-alkyl or N, N-dialkyl amides of unsaturated carboxylic acids having C 8 -C 30 -alkyl radicals described.
  • solid solutions refers to a state in which a substance is dispersed in a solid matrix, for example a polymer matrix, in a molecular dispersion Example when used in solid pharmaceutical administration forms of a sparingly soluble active ingredient for improved release of the active ingredient
  • An important requirement of such solid solutions is that they are stable even after storage for a prolonged period of time, ie that the active ingredient should not crystallize out.
  • the hygroscopicity of the solubilizers also plays an important role. Solubilizers that absorb too much water from the ambient air, lead to a flow of the solid solution and the unwanted crystallization of the active ingredients. Even when processed into dosage forms too great hygroscopicity can cause problems.
  • polymeric solubilizers have the disadvantages that they either do not form stable solid solutions or are too hygroscopic. In addition, they leave room for improvement as far as solubilization in aqueous systems is concerned.
  • the invention relates to preparations for sparingly soluble in water substances.
  • the copolymers may contain 0 to 39% by weight of at least one further free-radically copolymerizable monomer c), the weight percentages of the individual components a) to c) adding up to 100% by weight.
  • the proportion of the monomer a) in the copolymer is preferably in the range of 70 to 95 wt .-%, particularly preferably in the range of 75 to 90 wt .-%.
  • Suitable monomers b) are:
  • acrylic acid, methacrylic acid, dimethacrylic acid, ethacrylic acid, maleic acid, citraconic acid, methylenemalonic acid, allyligetic acid, vinylacetic acid, crotonic acid, fumaric acid, mesaconic acid and itaconic acid are suitable, preferably acrylic acid, methacrylic acid , Maleic acid or mixtures of said carboxylic acids.
  • Preferred amidated comonomers are, for example, N-stearylacrylamide, N-stearylmethacrylamide, N- (1-methyl) undecylacrylamide, N- (1-methyl) undecylmethacrylamide, N-dodecylacrylamide, N-dodecylmethacrylamide, N-octylacrylamide, N-octylmethacrylamide, N, N -Dioctylacrylamid, N 1 N- Dioctylmethacrylamid, N-Cetylacrylamid, N-Cetylmethacrylamid, N-Myristylacrylamid, N-Myristylmethacrylamid, N- (2-ethyl) -hexylacrylamid, N- (2-ethyl) -hexylmethacrylamid.
  • this polymer can be reacted with N-alkylamines by ring opening to give the corresponding amides.
  • acrylic or methacrylic esters with fatty alcohols having a chain length of 8 to 18 carbon atoms the alkyl radicals being may or may not be unbranched.
  • octyl acrylate 2-ethylhexyl acrylate, nonyl acrylate, decyl acrylate, lauryl acrylate, myristyl acrylate, cetyl acrylate, stearyl acrylate, oleyl acrylate, behenyl acrylate, octyl methacrylate, 2-ethylhexyl methacrylate, nonyl methacrylate, decyl methacrylate, lauryl methacrylate, myristyl methacrylate, cetyl methacrylate, stearyl methacrylate, oleyl methacrylate, behenyl methacrylate , tert-butylcyclohexyl acrylate.
  • b) can Vinylester long-chain aliphatic, saturated or unsaturated, unbranched C 8 -C 3 -carboxylic acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic and melissic acid are used.
  • C 8 -C 3 -carboxylic acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic and melissic acid are used.
  • Vinyl ethers are polymerized.
  • Preferred alkyl radicals of the vinyl ethers are branched or unbranched Ce-Cie alkyl chains, such as e.g. n-octyl, 2-ethylhexyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, n-heptadecyl, and n-octadecyl.
  • the proportion of the monomers b) is preferably 1 to 25, very particularly preferably 5 to 15 wt .-%.
  • Suitable additional free-radically copolymerizable monomers c) are:
  • Monoethylenically unsaturated carboxylic acids having 3 to 8 C atoms or their salts such as e.g. Acrylic acid, methacrylic acid, dimethacrylic acid, ethacrylic acid, maleic acid, citraconic acid, methylenemalonic acid, allylacetic acid, crotonic acid, fumaric acid, meaconic acid and itaconic acid.
  • Acrylic acid, methacrylic acid or mixtures of said carboxylic acids are preferably used from this group of monomers.
  • the monoethylenically unsaturated carboxylic acids can be used as free acid, as anhydrides and in partially or completely neutralized form in the copolymerization.
  • alkali metal or alkaline earth metal bases ammonia or amines, preferably sodium hydroxide solution, potassium hydroxide solution, soda, potash, sodium bicarbonate, magnesium oxide, calcium hydroxide, calcium oxide, gaseous or aqueous ammonia, triethylamine, ethanolamine, diethanolamine , Triethanolamine, morpholine, diethylenetriamine or tetraethylenepentamine.
  • suitable comonomers c) are, for example, esters of monoethylenically unsaturated C 3 -C 8 -carboxylic acids with C 1 -C 4 -mono- or di-alcohols or nitriles of the acids mentioned.
  • Examples include: methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, hydroxyisobutyl acrylate, hydroxyisobutyl methacrylate, monomethyl maleate, dimethyl maleate, maleic acid monoethyl ester, diethyl maleate, acrylonitrile, methacrylonitrile.
  • Suitable comonomers c) are the N-alkyl- Ci -C 4 -alkyl or N, N-CrC 4 dialkyl amides of acrylic acid or methacrylic acid, for example, N-dimethyl acrylamide or N-tert-butylacrylamide.
  • N, N-C 1 -C 4 -dialkylamino-C 1 -C 4 -alkyl acrylates for example dimethylaminoethyl acrylate, diethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate and the salts of the last-mentioned monomers with carboxylic acids or mineral acids and the quaternized products ,
  • Acrylamidoglycolic acid monoethylenically unsaturated sulfonic acids such as vinylsulfonic acid, allylsulfonic acid, methallylsulfonic acid, styrenesulfonic acid, acryloyl (3-sulfopropyl) esters, 3-sulfopropyl methacrylates and acrylamidomethylpropanesulfonic acid;
  • Monoethylenically unsaturated monomers containing phosphonic acid groups such as vinylphosphonic acid, allylphosphonic acid, acrylamidomethanepropanephosphonic acid.
  • copolymers may contain as monomers c) also vinyl acetate, N-vinylpyrrolidone, N-vinylimidazole, methylated N-vinylimidazole or N-vinylformamide.
  • Particularly preferred monomers c) are acrylic acid, methacrylic acid or itaconic acid and their alkali salts, very particularly preferably sodium acrylate.
  • the proportion of monomer building blocks c) in the copolymer is preferably in the range from 0 to 15% by weight, more preferably from 2 to 10% by weight.
  • the copolymers used according to the invention may have Fikentscher K values, measured at 1% strength by weight in 0.1 mol of NaCl solution, of from 5 to 50, preferably from 10 to 35, particularly preferably from 12 to 30.
  • the copolymers are prepared by free-radically polymerizing the corresponding monomers.
  • the preparation is carried out by known methods, e.g. solution, precipitation, or by reverse suspension polymerization using compounds which form radicals under the polymerization conditions.
  • the polymerization temperatures are usually in the range of 30 to 200, preferably 40 to 110 0 C.
  • Suitable initiators are, for example, azo and peroxy xyharmen and the customary redox initiator systems, such as combinations of hydrogen peroxide and reducing compounds, eg. Sodium sulfite, sodium bisulfite, sodium formaldehyde sulfoxilate and hydrazine.
  • the reaction medium used are all customary solvents in which the monomers are soluble.
  • water or alcoholic solvents e.g. Methanol, ethanol, n-propanol or isopropanol or mixtures of such alcohols with water used.
  • the polymerization can also be carried out in the presence of conventional regulators, if relatively lower molecular weights are to be set.
  • the solids content of the resulting organic solution is usually 20 to 60 wt .-%, in particular 20 to 35 wt .-%.
  • a nonaqueous solvent used for the polymerization may then be removed by steam distillation and exchanged for water.
  • aqueous solutions of the copolymers can be prepared by various drying methods, e.g. Spray drying, fluidized spray drying, drum drying or freeze-drying can be converted into powder form, from which can be prepared by redispersing in water again an aqueous dispersion or solution.
  • copolymers to be used according to the invention can in principle be used in all fields in which only sparingly soluble or insoluble substances are to be used in water either in aqueous preparations or should have their effect in an aqueous medium.
  • the copolymers find accordingly Use as solubilizers of sparingly water-soluble substances, in particular biologically active substances.
  • the term "sparingly soluble in water” also encompasses practically insoluble substances and means that a solution of the substance in water requires at least 30 to 100 g of water per g of substance at 20 ° C. In the case of practically insoluble substances, at least 10,000 g of water per g substance needed.
  • water-sparingly soluble biologically active substances are pharmaceutical active substances for humans and animals, cosmetic or agrochemical active substances or dietary supplements or dietary active substances.
  • Also suitable as the sparingly soluble substances to be solubilized are also dyes such as inorganic or organic pigments.
  • amphiphilic compounds for use as solubilizers for pharmaceutical and cosmetic preparations as well as food preparations are made available. They possess the property of solubilizing sparingly soluble active ingredients in the field of pharmacy and cosmetics, sparingly soluble food supplements, for example vitamins and carotenoids, but also sparingly soluble active substances for use in crop protection agents and veterinary active ingredients.
  • the copolymers can be used as solubilizers in cosmetic formulations.
  • they are suitable as solubilizers for cosmetic oils.
  • They have a good Solubilisiersort for fats and oils, such as peanut oil, jojoba oil, coconut oil, almond oil, olive oil, palm oil, castor oil, soybean oil or wheat germ oil or for essential oils such as pine pine oil, lavender oil, rosemary oil, pine needle oil, pine needle oil, eucalyptus oil, peppermint oil, sage oil , Bergamot oil, turpentine oil, lemon balm oil, juniper oil, lemon oil, aniseed oil, cardamom oil; Peppermint oil, camphor oil etc. or for mixtures of these oils.
  • inventive polymers can be used as solubilizers for sparingly soluble in water or insoluble UV absorbers such as 2-hydroxy-4-methoxybenzophenone (Uvinul ® M 40, Fa. BASF), 2,2 ', 4,4'-tetrahydroxybenzophenone (Uvinul ® D 50), 2,2'-dihydroxy-4,4'-dimethoxybenzophenone (Uvinul ® D49) 2,4-dihydroxybenzophenone (Uvinul ® 400), 2-cyano-3,3-diphenylacrylate 2'-ethyl hexyl ester (Uvinul ® N 539), 2,4,6-trianilino-p- (carbo-2'-ethylhexyl-1'-oxi) -1, 3,5-triazine (Uvinul ® T 150), 3- (4-methoxybenzylidene) -camphor (Eusolex ® 6300, Fa.
  • 2-hydroxy-4-methoxybenzophenone
  • the present invention therefore also cosmetic preparations containing at least one of the copolymers of the invention mentioned above as solubilizers. Preference is given to those preparations which, in addition to the solubilizer, contain one or more sparingly soluble cosmetic active ingredients, for example the abovementioned oils or UV absorbers.
  • solubilisates based on water or water / alcohol.
  • the solubilizers according to the invention are used in a ratio of 0.2: 1 to 20: 1, preferably 1: 1 to 15: 1, more preferably 2: 1 to 12: 1 to the sparingly soluble cosmetic active ingredient.
  • the content of solubilizer according to the invention in the cosmetic preparation is, depending on the active ingredient, in the range of 1 to 50 wt .-%, preferably 3 to 40 wt .-%, particularly preferably 5 to 30 wt .-%.
  • auxiliaries may be added to this formulation, for example nonionic, cationic or anionic surfactants such as alkylpolyglycosides, fatty alcohol sulfates, fatty alcohol ether sulfates, alkanesulfonates, fatty alcohol ethoxylates, fatty alcohol phosphates, alkylbetaines, sorbitan esters, POE sorbitan esters, sugar fatty acid esters, fatty acid polyglycerol esters, fatty acid partial glycerides, fatty acid carboxylates, fatty alcohol sulfosuccinates, Fatty acid sarcosinates, fatty acid isethionates, fatty acid taurinates, citric acid esters, silicone copolymers, fatty acid polyglycol esters, fatty acid amides, fatty acid alkanolamides, quaternary ammonium compounds, alkylphenol oxethylates, fatty amine
  • natural or synthetic compounds e.g. Lanolin derivatives, cholesterol derivatives, isopropyl myristate, isopropyl palmitate, electrolytes, dyes, preservatives, acids (e.g., lactic acid, citric acid).
  • formulations are used, for example, in bath-supplement preparations such as bath oils, shaving waters, face lotions, hair lotions, colognes, toilet water and in sunscreens.
  • bath-supplement preparations such as bath oils, shaving waters, face lotions, hair lotions, colognes, toilet water and in sunscreens.
  • Another field of application is the field of oral care, for example in mouthwashes, toothpastes, denture detersive creams and the like.
  • copolymers are also suitable for industrial applications, for example for preparations of sparingly soluble colorants, in toners, preparations of magnetic pigments and the like.
  • copolymers of the invention are used as a 100% substance or preferably as an aqueous solution.
  • the solubilizer is usually dissolved in water and intensively mixed with the sparingly soluble cosmetic active ingredient to be used in each case.
  • solubilizer it is also possible for the solubilizer to be intensively mixed with the sparingly soluble cosmetic active ingredient to be used in each case and then mixed with demineralized water with constant stirring.
  • the claimed copolymers are also suitable for use as solubilizers in pharmaceutical preparations of any kind, which are characterized in that they may contain one or more sparingly soluble or water-insoluble drugs and vitamins and / or carotenoids. In particular, they are solid solutions or solubilisates for oral administration.
  • the claimed copolymers are suitable for use in oral dosage forms such as tablets, capsules, powders, solutions.
  • oral dosage forms such as tablets, capsules, powders, solutions.
  • emulsions for example fat emulsions
  • the claimed copolymers are suitable for processing a sparingly soluble drug.
  • compositions of the above kind can be obtained by processing the claimed copolymers with pharmaceutically active substances by conventional methods and using known and new active substances.
  • the application according to the invention may additionally contain pharmaceutical excipients and / or diluents.
  • adjuvants cosolvents, stabilizers, preservatives are particularly listed.
  • the pharmaceutical active ingredients used are water-insoluble or sparingly soluble substances. According to DAB 9 (Deutsches Arzneistoffbuch), the classification of the solubility of active pharmaceutical ingredients is as follows: sparingly soluble (soluble in 30 to 100 parts of solvent); poorly soluble (soluble in 100 to 1000 parts of solvent); practically insoluble (soluble in more than 10,000 parts solvent).
  • the active ingredients can come from any indication.
  • Examples are benzodiazepines, antihypertensives, vitamins, cytostatic drugs - especially taxol, anesthetics, neuroleptics, antidepressants, antibiotics, antifungals, fungicides, chemotherapeutics, urologics, platelet aggregation inhibitors, sulfonamides, spasmolytics, hormones, immunoglobulins, sera, thyroid medicines, Psychotropic drugs, antiparkinson agents and other antihyperkinetics, ophthalmics, neuropathy preparations, calcium metabolism regulators, muscle relaxants, anesthetics, lipid lowering agents, liver therapeutics, coronary agents, cardiacs, immunotherapeutics, regulatory peptides and their inhibitors, hypnotics, sedatives, gynecologics, gout, fibrinolytics, enzyme preparations and transport proteins, enzyme inhibitors, emetics , Circulation-promoting agents, diuretics, diagnostics, corticoids, cholinergics, pathway
  • a possible preparation variant is the dissolution of the solubilizer in the aqueous phase, optionally with gentle heating and the subsequent dissolution of the active ingredient in the aqueous solubilizer solution.
  • the simultaneous dissolution of solubilizer and active ingredient in the aqueous phase is also possible.
  • copolymers according to the invention as a solubilizer can also be carried out, for example, by dispersing the active ingredient in the solubilizer, if appropriate with heating, and mixing it with water while stirring.
  • solubilizers can also be processed in the melt with the active ingredients.
  • solid solutions can be obtained in this way.
  • the method of melt extrusion is suitable for this purpose.
  • Another possibility for the preparation of solid solutions is also to prepare solutions of solubilizer and active ingredient in suitable organic solvents and then to remove the solvent by conventional methods.
  • the invention therefore also relates generally to pharmaceutical preparations which contain at least one of the copolymers according to the invention as a solubilizer. Preference is given to those preparations which, in addition to the solubilizer, contain a sparingly soluble or water-insoluble pharmaceutical active substance, for example from the above-mentioned indications.
  • Particularly preferred of the abovementioned pharmaceutical preparations are those which are orally administrable formulations.
  • inventive solubilizer in the pharmaceutical preparation depending on the active ingredient, in the range of 1 to 75 wt .-%, preferably 5 to 50 wt .-%, particularly preferably 10 to 30 wt .-%.
  • Another particularly preferred embodiment relates to pharmaceutical preparations in which the active ingredients and the solubilizer are present as a solid solution.
  • the weight ratio of solubilizer to active substance is preferably from 1: 1 to 4: 1.
  • copolymers according to the invention are also suitable as solubilizers in the food industry for nutrients, auxiliaries or additives which are sparingly soluble in water or insoluble in water, such as, for example, fat-soluble vitamins or carotenoids. Examples include clear, colored with carotenoids drinks.
  • compositions include pesticides, herbicides, fungicides or insecticides, especially those preparations of pesticides used as spray or pouring broths.
  • copolymers of the invention are distinguished by a particularly good solubilizing effect.
  • the following apparatus was used: 2 l apparatus with process-controlled water bath, anchor stirrer and thermometer.
  • the apparatus had connections for 3 feeds, a reflux condenser and an inlet tube for the introduction of nitrogen or water vapor.
  • Fikentscher K values 1% strength by weight solutions of the polymer in 0.1 mol aqueous
  • VCap N-vinylcaprolactam
  • VP N-Vinypyrrolidone
  • LA Lauryl acrylate
  • VL Vinyl laurate
  • NaA Sodium acrylate
  • the initial charge of isopropanol and the portion of feed 1 was charged with nitrogen and heated at a stirring power of 75 rpm to an internal reactor temperature of 75 ° C. Upon reaching 73 ° C internal temperature, the portion of feed 2 was added and for 10 min. polymerized. The remaining amounts of feed 1 were then fed in within 4 hours and feed 2 within 5 hours. Thereafter, a further 2 hours at 75 0 C, polymerization was continued. Subsequently, isopropanol was distilled off and the reaction mixture was diluted with water and subjected to steam distillation, so that a solution having a solids content of 31, 2 wt .-% was obtained. The K value was 13.5, measured 1 wt .-% strength in water.
  • Tertiary butyl perpivalate 75% by weight active in aliphatic mixture, TBPPI-75-AL from Degussa, 82049 Pullach / Germany
  • Comparative Example A Copolymer of N-vinylpyrrolidone / lauryl acrylate / sodium acrylate (weight ratio 80/10/10), K value 13.5
  • Comparative Example B Copolymer of N-vinylpyrrolidone / lauryl acrylate / sodium acrylate (weight ratio 85/5/10), K value 14.4
  • the active ingredient and the polymer were weighed into a suitable glass vessel in a weight ratio of 1: 1 (in each case 2 g) and then 16 ml of dimethylformamide were added as solvent.
  • the reaction was stirred at 20 0 C for 24 hours on a magnetic stirrer.
  • the solution was then pulled out on a glass plate with the aid of a 120 ⁇ m doctor blade.
  • Each batch of drug is given as follows to obtain a supersaturated solution. (If the weighed mass dissolved in the medium, the weight was increased until the formation of a sediment).
  • phosphate buffer pH 7.0 was added until solubilizer and phosphate buffer in the weight ratio of 1:10 were present. With the aid of a magnetic stirrer, this mixture was stirred at 2O 0 C for 72 hours. Then at least a 1 hour rest period. After filtration of the batch, this was measured photometrically and determines the content of active ingredient.
  • solubilizers according to the invention were clearly superior.
  • the weight gain of a sample of the copolymer was determined after storage for 24 hours at a constant humidity (76%) and rechecked after 14 days. After 14 days the values were unchanged.
  • the copolymers of the invention showed a significantly lower hygroscopicity.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • General Preparation And Processing Of Foods (AREA)

Abstract

L'invention concerne l'utilisation de copolymères comme solubilisants pour des substances peu solubles dans l'eau, lesquels copolymères contiennent a) 60 à 99 % en poids de N-vinylcaprolactame et b) 1 à 40 % en poids d'au moins un monomère b) sélectionné dans le groupe constitué par b1) des alkylesters en C8-C30 d'acides carboxyliques en C3-C8 monoéthyléniquement insaturés, b2) des amides N-alkyl- ou N,N-dialkylsubstitués de l'acide acrylique ou méthacrylique présentant des groupes alkyle en C8-C30, b3) des esters vinyliques d'acides carboxyliques en C8-C30 aliphatiques linéaires et b4) des éthers d'alkylvinyle en C8-C30.
EP06792663A 2005-08-11 2006-08-02 Copolymeres a base de n-vinylcaprolactame et leur utilisation comme solubilisants Withdrawn EP1915407A2 (fr)

Priority Applications (1)

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EP06792663A EP1915407A2 (fr) 2005-08-11 2006-08-02 Copolymeres a base de n-vinylcaprolactame et leur utilisation comme solubilisants

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05107406 2005-08-11
EP06792663A EP1915407A2 (fr) 2005-08-11 2006-08-02 Copolymeres a base de n-vinylcaprolactame et leur utilisation comme solubilisants
PCT/EP2006/064993 WO2007017452A2 (fr) 2005-08-11 2006-08-02 Copolymeres a base de n-vinylcaprolactame et leur utilisation comme solubilisants

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EP1915407A2 true EP1915407A2 (fr) 2008-04-30

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EP (1) EP1915407A2 (fr)
JP (1) JP2009504605A (fr)
CN (1) CN101283008A (fr)
WO (1) WO2007017452A2 (fr)

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WO2007017452A3 (fr) 2007-04-12
JP2009504605A (ja) 2009-02-05
WO2007017452A2 (fr) 2007-02-15
CN101283008A (zh) 2008-10-08
US20100137455A1 (en) 2010-06-03

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