EP2987905A1 - Means for hydrophilic coating of fabrics composed of hydrophobic thermoplastic materials, and the application of the same - Google Patents

Means for hydrophilic coating of fabrics composed of hydrophobic thermoplastic materials, and the application of the same Download PDF

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Publication number
EP2987905A1
EP2987905A1 EP15180875.5A EP15180875A EP2987905A1 EP 2987905 A1 EP2987905 A1 EP 2987905A1 EP 15180875 A EP15180875 A EP 15180875A EP 2987905 A1 EP2987905 A1 EP 2987905A1
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Prior art keywords
agent
composition according
hydrophobic
hydrophilic
care
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EP15180875.5A
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German (de)
French (fr)
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EP2987905B1 (en
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Klaus Schmitt
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Klaus Schmitt Beteiligungsgesellschaft Mbh
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Klaus Schmitt Beteiligungsgesellschaft Mbh
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • D06M13/148—Polyalcohols, e.g. glycerol or glucose
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D06M13/2243—Mono-, di-, or triglycerides
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/372—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen containing etherified or esterified hydroxy groups ; Polyethers of low molecular weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D06M13/419—Amides having nitrogen atoms of amide groups substituted by hydroxyalkyl or by etherified or esterified hydroxyalkyl groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
    • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/356—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms
    • D06M15/3562—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms containing nitrogen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/53—Polyethers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/11—Oleophobic properties

Definitions

  • the present invention comprises means for hydrophilic coating of sheets of hydrophobic thermoplastic materials and the use of the composition.
  • the means for hydrophilic coating of sheets of initially hydrophobic thermoplastic materials imparts hydrophilic properties to the products made of the fabrics, such as nonwovens, films, foams which are basically hydrophobic substrates, in order to achieve repeated wettability with aqueous media.
  • the invention relates to the thermoplastic materials coated with the compositions according to the invention and products produced therefrom.
  • Hydrophilized fabrics, perforated films and foams are used in particular as cover layers or as liners in multi-layer constructions for sanitary articles and medical articles such as surgical table underlays, wound dressings, incontinence products and similar products.
  • cover layers serve to forward body fluids such as blood or urine as quickly as possible to an underlying absorption layer (cover layer) or to distribute and forward (intermediate layer).
  • Nonwoven or perforated film is usually used for these cover or intermediate layers made of polyester or polyolefin, for foams also polyurethane.
  • hydrophobic substrates are used, since they largely pass the aqueous body fluids to the absorber layer underneath and absorb them only to a lesser extent, so that this upper layer remains dry.
  • a preferably dry cover layer is useful to avoid skin irritation.
  • these originally hydrophobic substrates In order for these originally hydrophobic substrates to be wetted by aqueous liquids, they must be coated hydrophilic.
  • thermoplastic materials that allow low material and production costs.
  • hydrophilic coating should give the most permanent possible hydrophilization that does not pass through mechanical friction is removed or leached out by liquids and provides the coated material with as constant a hydrophilicity as possible over a sufficiently long period of its useful life to allow repeated wetting with aqueous media.
  • water-resistant or permanently hydrophilic properties The term “waterproof” or “permanent” is not synonymous with the concept of wash fastness. A proper coating would only be achieved by chemical linkage to the substrate or within the hydrophilic layer.
  • the hydrophilization takes place by coating the surface of suitable substrates with surface-active substances or by adding hydrophilic additives into the melt before or during the extrusion process.
  • Hydrophilizing melt additives are surface-active substances such as those described in US Pat US 2008/064281 A1 and WO 2005/111299 A1 to be discribed. These melt additives are economically and technically disadvantageous compared to surface coatings.
  • the melt additives are distributed in the cross section of the entire matrix. As a rule, they migrate to the surface only very slowly, but only there can they produce the hydrophilizing effect. Thus, when added to the melt, it requires much more amount of hydrophilizing agent to achieve the same effect as in the superficial coating. Although this disadvantage can be reduced by a bicomponent spinning process in which the additive is added only to the outer layer, the process is more complex and expensive here. Repeated wettability is achieved by allowing hydrophilizing agent that has been removed at the surface to migrate out of the matrix. Thus, a permanence against aqueous media and mechanical friction can be achieved.
  • Hydrophilic coatings which allow repeated wettability are also known from the literature.
  • the EP 1 600 532 B1 describes the use of a fatty acid esterified glycerol alkoxylate to hydrophilize polyolefin and / or polyester material.
  • the US 4,988,449 A describes hydrophilizing compositions containing diethanolamides as well as nonionic surfactants, alkyl phosphates, quaternary ammonium salts and / or alkylimidazolium salts. They are used as wetting agents for polyolefin nonwovens to allow the penetration of liquids.
  • hydrophilicizing compositions which contain polyoxyalkylene-modified polydimethylsiloxanes, alone or in combination with nonionic surfactants, alkyl phosphates, quaternary ammonium salts and / or alkylimidazolium salts.
  • the EP 410 485 B1 describes a process for hydrophilizing polyolefin fibers and nonwovens made therefrom by applying to the surface of the fibers an aqueous surfactant mixture in which the composition consists of alkoxylated triglycerides of C18 fatty acids and polyoxyalkylene modified polydimethylsiloxane.
  • the EP 0 839 947 A2 describes hydrophilizing compositions consisting of nonionic surfactants in combination with a quaternary ammonium compound and / or a cationically modified polydimethylsiloxane.
  • the DE 37 32 378 A1 relates to spin finish mixtures which contain fatty acid alkanolamides with softening points> 70 ° C. as bonding stop components, for synthetic fibers, especially for fibers made of polyacrylonitrile, which are used as cut fibers and the use of these spin finish mixtures for the preparation of staple fibers, especially based on polyacrylonitrile.
  • the JP 002002020971 A describes an oily substance for high speed spinning of synthetic fibers.
  • All these coating agents have in common that they are in the form of aqueous dilutable oils, pastes or aqueous prediluted emulsions or dispersions.
  • aqueous dilute liquor aqueous dilute liquor
  • the water is removed by a drying process.
  • the coating is then in the form of a liquid film to a spreadable paste.
  • the coatings which are state of the art today, can be removed again because of their at least partial water solubility, emulsifiability or dispersibility by aqueous liquids. Due to their mostly oily to waxy consistency as a coating they can be rubbed off mechanically.
  • the permanently hydrophilic properties are generally achieved by the surfactant films undergo a rapid increase in viscosity by contact with aqueous media and thereby pass into a little water-soluble gel phase, but which can be redissolved by further addition of aqueous media.
  • the present invention is based on considerations to achieve a particularly waterproof and rubbed hydrophilic coating by the water-insoluble portion of the coating is increased and the brittleness of the coating is increased. Furthermore, hydrophobic skin-care substances should be applied to the hydrophilic coating in a one-step process, without the wettability deteriorating significantly.
  • hydrophobic skin care agents such as ester oils / waxes, silicone-based oils or waxes, and / or native or paraffinic oils or waxes.
  • Water-resistant sunscreen formulations comprising emulsifiers based on organic phosphoric esters, often potassium monocetylphosphate formulated with long-chain alcohols such as cetylsteary alcohols and / or partial glycerides, eg described in US Pat US 2013/0177510 A1 , of the DE 10 2012 214 716 A1 , of the EP 2 545 896 A1 and the EP 2 545 901 A1 ,
  • rinses or conditioners which are applied from aqueous emulsions / dispersions and their lubricants and care substances after washing partially remain in the hair, so are waterproof.
  • Main components of these hair care formulations are mostly cationic surfactants which can be used as monomers or polymers in combination with longer-chain fatty alcohols and / or siloxanes and water. Often hydrophobic lubricants such as native, paraffinic or semi-synthetic oils or waxes are used.
  • Such formulations are described for example in US Pat EP 1 413 285 A1 , of the WO 2010/136285 A1 , of the WO 2014/069388 A1 , of the DE 197 05 822 A1 and the DE10 2008 030 136 A1 ,
  • fabric softeners based on cationic surfactants which remain at least partially on the laundry after the rinsing process, that is to say are water-resistant to a certain extent, inter alia described in US Pat DE 44 03 686 A1 . EP 0 387 064 A1 . GB 1 104 441 A1 ,
  • the US 4,126,562 A proposes polymeric cationic salts in combination with nonionic glycerol monostearate or sorbitan stearate as a laundry softening formulation.
  • the most commonly used cationic surfactants in hair and laundry conditioners are quaternary trialkylammonium salts and esterquats.
  • the emulsifier potassium cetyl phosphate used in formulations for waterproof sunscreen products is ultimately too water-soluble; the nonionic emulsifiers cetylstearyl alcohol and the vegetable partial glycerides are not sufficiently wetting active with respect to aqueous media.
  • the hair and fabric softener formulations may be formulated to meet the requirements of a hydrophilic coating for hydrophobic sheets of thermoplastic materials in terms of wetting speed, they are not sufficiently abrasion resistant and permanent.
  • Skin-care substances may be found on the hydrophilic layers of absorbent articles.
  • the hydrophilic cover fleeces which come into contact with the skin, to equip with hydrophobic care lotions when assembling the individual layers in the series production of the absorbent article.
  • the hydrophilizing coating is applied to the flat substrate, which is further processed in the joining machine of series production and in a second process step, the care lotion.
  • the lotion is applied in the form of a pattern of several stripes on the bodyside surface of the cover fleece, so that the liquid-permeable property of the cover fleece is given.
  • the procedure according to WO 2012/047986 A2 proposes a lotion for application to the cover fleece of a hygiene article, in addition to 0.1-90 wt .-% of the hydrophobic care component (paraffin wax, petrolatum) or 0.1 to 25 wt .-% of an ethoxylated Monolaurinklareesters and 0.1 to 50 Wt .-% of an ethoxylated Monostearinklareesters and a carrier material.
  • the composition is described as hydrophilic, but applied to an already liquid-permeable and thus hydrophilic or hydrophilized cover layer.
  • hydrophilic coatings are usually used which have a liquid to pasty, at best roomy, lumpy consistency at room temperature and can therefore be easily rubbed off the surface.
  • This low rubbing fastness leads to problems in further processing by sticky deposits, which force frequent shutdown and cleaning of the machines.
  • mechanical abrasion of the coating results in degraded hydrophilic properties of the substrate.
  • the coatings consist mostly of readily emulsifiable surfactants, which can be removed to some extent by aqueous media. This can reduce permanence / repeated wettability.
  • a surface coating can be applied undiluted, diluted from solvent or diluted from aqueous emulsion / dispersion directly onto the fabric (film, foam, textile) or in a precursor to the filaments or fibers which are subsequently processed into fabric.
  • care oils or waxes are applied to the previously hydrophilized substrate.
  • the object of the invention is to provide a means for hydrophilic coating of hydrophobic surfaces of substrates for medical and hygiene articles with faster repeating Wettability, low tendency to detach against aqueous media and mechanical friction.
  • it is intended to be able to add hydrophobic, skin-care substances to the hydrophilizing agent without the rapid repeated wettability being significantly worsened.
  • the functionalization of the surface with hydrophilizing and care substances can be achieved in an economically advantageous, single-stage process.
  • the present invention achieves this object by a means for hydrophilic coating of sheets of hydrophobic thermoplastic materials having the features of claim 1.
  • the components of the composition were selected so that optimized wettability is achieved by controlling the HLB (hydrophilic-lipophilic balance), very good permanence is achieved by using as few water-soluble components as possible, and consistency of the overall formulation is achieved by the consistency of the individual components which allows good mechanical resistance.
  • Mechanically less durable coatings which are typically liquid at room temperature, exhibit lower abrasion resistance, as well as a tendency to flow, such that the coating is spread over adjacent layers, e.g. the packaging material can pass.
  • the dependent claims 2 to 12 describe particularly advantageous embodiments of the agent, the dependent claims 13 to 18 describe uses of the agent.
  • composition of the invention is in a solid state at room temperature.
  • the preferred dosage form are pourable flakes, flakes, granules, powders, etc. Due to the solid consistency, the rub fastness is significantly improved compared to liquid or pasty coatings. It has good permanent hydrophilicity properties and imparts to the substrates so equipped a rapid repeated wettability and good flowability of aqueous liquids.
  • the proportion of components which are present in the liquid state at room temperature is not higher than that the composition still has a sufficiently solid consistency at room temperature in order to be able to be processed into a pourable dosage form without the particles adhering to one another.
  • the composition of the invention has a consistency that makes it non-spreadable at room temperature using moderate pressures.
  • the agent according to the invention should preferably be undiluted by a melt application to the substrate be applied. It must therefore be present in the melt as a homogeneous oil in suitable viscosity. Due to the desired low water solubility of the composition according to the invention, an application from aqueous liquor can be diluted only to a high degree, applied at elevated temperature and / or using a solubilizer (eg isopropanol).
  • a solubilizer eg isopropanol
  • composition of the invention is suitable for use as a hydrophilic coating for sheets of hydrophobic thermoplastic materials, preferably textiles, films and foams, particularly preferably nonwovens.
  • the composition according to the invention can be applied to the fabric or, in a preliminary stage, to fibers or filaments which are further processed to form a textile fabric.
  • Thermoplastic materials are plastics which are deformable in a certain temperature range. They can be processed, for example, by injection molding, extrusion, film blowing, etc.
  • the thermoplastics include, for example: acrylonitrile-butadiene-styrene (ABS), polyamides (PA), polyacetate (PLA), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), Polyethylene (PE), Polypropylene (PP), Polystyrene (PS), Polyetheretherketone (PEEK), Polyvinylchloride (PVC) and Thermoplastic Polyurethane (TPU).
  • ABS acrylonitrile-butadiene-styrene
  • PA polyamides
  • PLA polyacetate
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • PET polyethylene terephthalate
  • a hydrophilic material is wettable by aqueous liquids, i. the contact angle between the material or its surface and the liquid is less than 90 ° or the liquid spreads spontaneously.
  • a material or its surface is called hydrophobic if the contact angle is greater than 90 ° and the aqueous liquid does not spontaneously spread.
  • the components a), b) and c) are mixed in a molten state, then only the Neutralizing agent added *.
  • the components b) and c) act as solvents for the alkylphosphoric acid ester.
  • the alkyl phosphoric acid ester can not be neutralized undiluted because a non-fusible salt is formed.
  • R 1, R 2 and R 3 independently of one another are (i) an alkyl group having 12 to 22 C atoms in the hydrocarbon chain or an alkenyl group having 12 to 22 C atoms in the hydrocarbon chain, and wherein the alkyl groups or alkenyl groups are each branched or straight-chain, saturated, may be unsaturated or polyunsatur
  • At least one of R1, R2 and R3 in formula (I) is an alkyl group or an alkenyl group having 10 to 22 C atoms, more preferably having 12 to 18 C atoms, most preferably C12-C18 mono / dialkyl.
  • any suitable bases such as alkali hydroxides, ammonia and alkanolamines or combinations thereof may be used, preferably non-volatile bases such as NaOH or KOH. It is particularly preferred that concentrated aqueous potassium or caustic soda be used to minimize water input. A portion of the water evaporates during the neutralization process, so that overall the consistency of the agent according to the invention obtains the desired solid state at room temperature.
  • the functional solvents b) and c) allow the neutralization of the Alkylphosphorklareesters in the melt and have hydrophilizing / nourishing properties as components of the coating. Fats, waxes, tri- and partial glycerides, fatty alcohols, ester oils and combinations thereof can be used as the hydrophobic solvent / care substance.
  • the hydrophobic solvent / care substance used is preferably care substances having a melting point> 30 ° C.
  • the hydrophobic care agent is preferably selected from the group of native triglycerides, the medicinal white oils, vaseline, ester oils, ester waxes and / or paraffinic oils and waxes and the fatty alcohols and combinations thereof.
  • Thistle oil, grapeseed oil, argan oil, wheat germ oil, pumpkin seed oil, canola oil, hydrogenated or unhydrogenated are particularly preferred fats and waxes with a melting point> 30 ° C.
  • waxes are in particular saturated hydrocarbons, microcrystalline waxes, petrolatum and paraffins, preferably having a melting range> 30 ° C.
  • Alcohols with C chains of C16-C22 are particularly suitable as native fatty alcohols.
  • cetylstearyl alcohol Particularly preferred are cetylstearyl alcohol, shea butter and / or Vaseline.
  • Nonionic emulsifiers which can be used are fatty alcohol alkoxylates, fatty acid alkoxylates, alkylglucosides, alkylpolyglucosides, fatty acid alkanolamides, alkoxylated fatty acid alkanolamides, alkylamine alkoxylates, partial glycerides and combinations thereof.
  • fatty alcohol ethoxylates having a melting range> 30 ° C.
  • hydrophilic polymers can be used polyalkylene glycols, polyvinyl alcohols, modified polyvinyl alcohols, modified polydimethylsiloxanes, modified polyvinylpyrrolidones and combinations thereof.
  • modified polydimethylsiloxanes are particularly preferred.
  • hydrophilic plasticizers include: modified polydimethylsiloxanes, organic cationic surfactants such as mono-, di- or trialkylammonium compounds, amidoamines (amidoamine quats), quaternized fatty acid trialkanolamine ester salts (esterquats) or polymeric cationic surfactants and combinations thereof.
  • organic cationic surfactants such as mono-, di- or trialkylammonium compounds, amidoamines (amidoamine quats), quaternized fatty acid trialkanolamine ester salts (esterquats) or polymeric cationic surfactants and combinations thereof.
  • wetting agents and further hydrophilizing agents may optionally be added to the composition according to the invention: sulfosuccinic acid esters, carboxylates, betaines, fatty alcohol alkoxylates, siloxanes, modified polydimethylsiloxanes, sulfosuccinic acid esters, alkylglucosides, alkylpolyglucosides, other sugar surfactants (sorbitan esters, sucrose esters, etc.), alkyl sulfates, alkyl ether sulfates, alkyl phosphates and alkyl ether phosphates, Polyvinyl alcohols, polyvinyl pyrrolidones and combinations thereof.
  • composition according to the invention may optionally contain further technical additives from the group of cohesive agents, lubricants, complexing agents, corrosion inhibitors.
  • additives may also be ionic surfactants, nonionic emulsifiers / bodying agents in the sense of the invention. These additives are known in the art and are commercially available.
  • additives from the field of plant extracts and agents, vitamins, provitamins and the antimicrobial agents may be added to the agent.
  • composition according to the invention may additionally contain care additives such as plant-based components, e.g. from chamomile, calendula, aloe vera and vitamins or provitamins like vitamin E or panthenol.
  • care additives such as plant-based components, e.g. from chamomile, calendula, aloe vera and vitamins or provitamins like vitamin E or panthenol.
  • the proportion of care additives in the composition according to the invention is preferably 0.5% by weight to 5% by weight, more preferably up to 2% by weight, and most preferably up to 1% by weight.
  • composition of the invention is used as a permanent hydrophilizing coating, preferably for fiber-forming thermoplastic polymers, more preferably for polyethylene terephthalate (PET) and polyolefins and thermoplastic polyurethane, most preferably for polypropylene and polyethylene.
  • thermoplastic polymers more preferably for polyethylene terephthalate (PET) and polyolefins and thermoplastic polyurethane, most preferably for polypropylene and polyethylene.
  • composition of the invention is suitable for the hydrophilic coating of bicomponent systems (e.g., polyethylene / polyester core sheath fibers).
  • bicomponent systems e.g., polyethylene / polyester core sheath fibers
  • the composition of the invention is suitable for the hydrophilic coating of bicomponent systems.
  • composition according to the invention can be applied to the substrate either undiluted in a molten state or diluted by suitable solvents or from aqueous dispersion or emulsion.
  • suitable solvents or from aqueous dispersion or emulsion.
  • the solvent and / or water is removed in a subsequent process step.
  • the aqueous emulsion or dispersion is prepared with hot water (about 80 ° C.).
  • the agent according to the invention can be dissolved in polar organic solvents, such as short-chain alcohols, or in mixtures of polar organic solvent and water.
  • compositions of the invention in an amount of 0.1 to 5 wt .-% based on the dry weight of the respective product (fiber, filament, nonwoven, film, foam), more preferably in an amount of 0.2-3 wt. -%.
  • a process for the production of permanently hydrophilized films, foams or textile products, in particular nonwovens comprises the application of the agent according to the invention to the substrate of polyolefin, polyester, polyamide or polyurethane as known to the person skilled in the art, via dosing pencils, rollers, dipping baths or by foam application.
  • the agent according to the invention to the substrate of polyolefin, polyester, polyamide or polyurethane as known to the person skilled in the art, via dosing pencils, rollers, dipping baths or by foam application.
  • solvent and / or water By diluting the composition with solvent and / or water, a particularly uniform distribution can take place with a small layer thickness.
  • the solvent / water is removed after the application, whereby the coating is in a solid state of aggregation on the substrate at room temperature.
  • the spun or staple fiber webs equipped according to the invention are particularly preferably physically strengthened nonwovens, more preferably by thermobonding, water needling or hot air.
  • the hydrophilic coating can also be applied to filaments or fibers and additionally assume the function of a lubricating and processing aid.
  • the fibers coated in this way are further processed into textile fabrics, which can optionally additionally be coated with the agent according to the invention.
  • a process for the production of permanently hydrophilically coated films can be carried out so that the film is first coated with the agent according to the invention and then perforated in order to achieve the necessary porosity. Conversely, the film can also be perforated first and then coated.
  • the agent according to the invention can be melted and applied directly from the melt to the substrate.
  • a drying step is omitted in this method.
  • the melt application can take place on the fabric, which is further processed in the next step as a functionalized layer (cover or intermediate layer) to a hygiene or medical article.
  • the melt application may also be on the untreated substrate in further processing, e.g. on a hitherto hydrophobic cover fleece in the joining machine.
  • Suitable coating devices for the melt application are already commercially available for the application of hot melt adhesives or lotions.
  • An absorbent article is a multi-layered construction, primarily intended to contain body fluids.
  • the absorbent article usually has at least one topsheet positioned bodyside, an absorbent layer or absorbent core which receives the liquid, and a liquid impermeable backsheet. Frequently, hydrophilic interlayers are incorporated to better distribute the liquid over the absorbent core.
  • absorbent articles are wound coverings, wound plasters, surgical table covers or incontinence articles.
  • the invention comprises absorbent articles comprising at least one liquid pervious sheet made from a sheet hydrophilized with the composition of the invention.
  • substrates which already have a different coating before coating with the agent according to the invention, or which receive a further coating after coating with the agent according to the invention.
  • the invention also includes substrates of such thermoplastic materials whose originally hydrophobic properties have been altered by additives (e.g., hydrophilic melt additives) prior to applying the composition of the invention.
  • additives e.g., hydrophilic melt additives
  • the substrate chosen was a hydrophobic thermally bonded polypropylene spunbonded nonwoven having a basis weight of 30 g / m 2.
  • the hydrophilizing coatings were applied by spray application from aqueous ethanolic solution and dried at room temperature.
  • the amount of application (based on the unextruded fleece) is determined by weight.
  • the coated fleece is placed on 2 layers of filter paper (MN 618), which simulate the absorption layer in hygiene or medical articles.
  • a nonwoven sample is placed on 2 layers of filter paper. At intervals of 1 cm, 20 ⁇ 1 drop of artificial urine (0.9% by weight saline solution) is added dropwise to the fleece. The drip points are marked before. The number of drops that sink within 2 seconds is counted.
  • the experiment is repeated twice. In the repetition, the same dripping points are to be used.
  • the sample is clamped on an inclined plane, which is beveled at an angle of 30 °. 2 drops of artificial urine are given at the top of the sample. The running length of the liquid is measured.

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Abstract

Die vorliegende Erfindung betrifft Mittel zur hydrophilen Beschichtung von Flächengebilden aus zunächst hydrophoben thermoplastischen Materialien und daraus hergestellten Erzeugnissen wie Vliese, Folien, Schäume, die diesen grundsätzlich hydrophoben Substraten hydrophile Eigenschaften verleihen, um eine wiederholte Benetzbarkeit mit wässrigen Medien zu erreichen. Ferner betrifft die Erfindung die mit dem erfindungsgemäßen Mittel hergestellten Erzeugnisse. Das erfindungsgemäße Mittel zur hydrophilen Beschichtung poröser Flächengebilde aus hydrophoben thermoplastischen Materialien besteht aus 10-75 Gew.-% eines Alkylphosphorsäureesters oder Alkenylphosphorsäureesters, 5-60 Gew.-% hydrophoben Pflegestoffen, 5-60 Gew.-% nichtionischen Emulgatoren und/oder hydrophilen Polymeren und Neutralisationsmittel sowie bis zu 60 Gew.-% Zusatzstoffen. Das Mittel hat bei Raumtemperatur einen festen Aggregatzustand.The present invention relates to compositions for the hydrophilic coating of fabrics of initially hydrophobic thermoplastic materials and products made thereof, such as nonwovens, films, foams, which impart hydrophilic properties to these basically hydrophobic substrates in order to achieve repeated wettability with aqueous media. Furthermore, the invention relates to the products produced with the agent according to the invention. The composition according to the invention for the hydrophilic coating of porous sheets of hydrophobic thermoplastic materials consists of 10-75% by weight of an alkylphosphoric ester or alkenylphosphoric acid ester, 5-60% by weight of hydrophobic care substances, 5-60% by weight of nonionic emulsifiers and / or hydrophilic polymers and neutralizing agents and up to 60 wt .-% additives. The agent has a solid state of aggregation at room temperature.

Description

Die vorliegende Erfindung umfasst Mittel zur hydrophilen Beschichtung von Flächengebilden aus hydrophoben thermoplastischen Materialien und die Verwendung des Mittels. Das Mittel zur hydrophilen Beschichtung von Flächengebilden aus zunächst hydrophoben thermoplastischen Materialen verleiht den aus den Flächengebilden hergestellten Erzeugnissen, wie Vliese, Folien, Schäume, die diesen grundsätzlich hydrophobe Substrate sind, hydrophile Eigenschaften, um eine wiederholte Benetzbarkeit mit wässrigen Medien zu erreichen. Ferner betrifft die Erfindung die mit den erfindungsgemäßen Zusammensetzungen beschichteten thermoplastischen Materialien und daraus hergestellte Erzeugnisse.The present invention comprises means for hydrophilic coating of sheets of hydrophobic thermoplastic materials and the use of the composition. The means for hydrophilic coating of sheets of initially hydrophobic thermoplastic materials imparts hydrophilic properties to the products made of the fabrics, such as nonwovens, films, foams which are basically hydrophobic substrates, in order to achieve repeated wettability with aqueous media. Furthermore, the invention relates to the thermoplastic materials coated with the compositions according to the invention and products produced therefrom.

Hydrophilierte textile Flächengebilde, perforierte Folien und Schäume werden insbesondere als Abdecklagen oder als Zwischenlagen in mehrlagigen Konstruktionen für Hygieneartikel und Medizinartikel wie Operationstischunterlagen, Wundabdeckungen, Inkontinenzprodukte und ähnliche Erzeugnisse verwendet. Solche porösen Abdeck- oder Zwischenlagen dienen dazu, Körperflüssigkeiten wie Blut oder Urin möglichst schnell an eine darunter liegende Absorptionsschicht weiterzuleiten (Decklage) bzw. zu verteilen und weiterzuleiten (Zwischenlage). Man verwendet für diese Abdeck- oder Zwischenlagen Vliesstoff oder perforierte Folie zumeist aus Polyester oder Polyolefin, für Schäume auch Polyurethan.Hydrophilized fabrics, perforated films and foams are used in particular as cover layers or as liners in multi-layer constructions for sanitary articles and medical articles such as surgical table underlays, wound dressings, incontinence products and similar products. Such porous cover or intermediate layers serve to forward body fluids such as blood or urine as quickly as possible to an underlying absorption layer (cover layer) or to distribute and forward (intermediate layer). Nonwoven or perforated film is usually used for these cover or intermediate layers made of polyester or polyolefin, for foams also polyurethane.

Es werden grundsätzlich hydrophobe Substrate eingesetzt, da diese die wässrigen Körperflüssigkeiten weitestgehend zur darunter liegenden Absorberschicht durchleiten und nur in geringerem Umfang selbst absorbieren, so dass diese obere Lage trocken bleibt. Eine möglichst trockene Abdecklage ist der Vermeidung von Hautirritationen dienlich. Damit diese ursprünglich hydrophoben Substrate überhaupt von wässrigen Flüssigkeiten benetzt werden können, müssen sie hydrophil beschichtet werden.In principle, hydrophobic substrates are used, since they largely pass the aqueous body fluids to the absorber layer underneath and absorb them only to a lesser extent, so that this upper layer remains dry. A preferably dry cover layer is useful to avoid skin irritation. In order for these originally hydrophobic substrates to be wetted by aqueous liquids, they must be coated hydrophilic.

Bevorzugt verwendet man thermoplastische Materialien, die niedrige Material- und Produktionskosten ermöglichen.Preference is given to using thermoplastic materials that allow low material and production costs.

Die Behandlung der hydrophoben Folien, Schäume, Fasern, Filamente oder Textilien mit einer hydrophilen Beschichtung soll eine möglichst dauerhafte Hydrophilierung ergeben, die nicht durch mechanische Reibung entfernt oder durch Flüssigkeiten ausgewaschen wird und dem beschichteten Material über einen hinreichend langen Zeitraum seiner Nutzungsdauer hinweg eine möglichst gleichbleibende Hydrophilie verleiht, um wiederholte Benetzungen mit wässrigen Medien zu ermöglichen. Man spricht dann von wasserfesten oder permanent hydrophilen Eigenschaften. Die Begrifflichkeit "wasserfest" oder "permanent" ist nicht mit dem Begriff der Waschechtheit gleichzusetzen. Eine waschechte Beschichtung wäre nur durch chemische Verknüpfung mit dem Substrat oder innerhalb der hydrophilen Schicht zu erzielen.The treatment of the hydrophobic films, foams, fibers, filaments or textiles with a hydrophilic coating should give the most permanent possible hydrophilization that does not pass through mechanical friction is removed or leached out by liquids and provides the coated material with as constant a hydrophilicity as possible over a sufficiently long period of its useful life to allow repeated wetting with aqueous media. One speaks then of water-resistant or permanently hydrophilic properties. The term "waterproof" or "permanent" is not synonymous with the concept of wash fastness. A proper coating would only be achieved by chemical linkage to the substrate or within the hydrophilic layer.

In der Medizintechnik wird diese chemische Permanenz z.B. durch UV-Härtung der Beschichtung erreicht, die gleichzeitig eine verbesserte mechanische Beständigkeit bewirkt. Um eine wasserfeste hydrophile Beschichtung durch physikalische Bindung zu erreichen, gibt es verschiedene literaturbekannte Ansätze.In medical technology, this chemical permanence is e.g. achieved by UV curing of the coating, which simultaneously provides improved mechanical resistance. In order to achieve a waterproof hydrophilic coating by physical bonding, there are various approaches known from the literature.

Üblicherweise erfolgt die Hydrophilierung durch Beschichtung der Oberfläche geeigneter Substrate mit grenzflächenaktiven Substanzen oder durch Zugabe von hydrophilen Additiven in die Schmelze vor oder während des Extrusionsprozesses.Usually, the hydrophilization takes place by coating the surface of suitable substrates with surface-active substances or by adding hydrophilic additives into the melt before or during the extrusion process.

Bei hydrophilierenden Schmelzeadditiven handelt es sich um grenzflächenaktive Substanzen wie sie beispielsweise in US 2008/064281 A1 und WO 2005/111299 A1 beschrieben werden. Diese Schmelzeadditive sind im Vergleich zu Oberflächenbeschichtungen ökonomisch und technisch nachteilig. Die Schmelzeadditive verteilen sich im Querschnitt der gesamten Matrix. Sie migrieren in der Regel nur sehr langsam nach außen an die Oberfläche, können aber nur dort den hydrophilierenden Effekt ergeben. So benötigt man beim Zusatz zur Schmelze ungleich mehr Menge an Hydrophilierungsmittel, um den gleichen Effekt wie bei der oberflächlichen Beschichtung zu erzielen. Dieser Nachteil kann zwar durch ein Bikomponentenspinnverfahren verringert werden, in dem das Additiv nur der äußeren Schicht zugegeben wird, allerdings ist hier das Verfahren aufwändiger und teurer. Die wiederholte Benetzbarkeit wird erreicht, indem Hydrophilierungsmittel, das an der Oberfläche entfernt wurde, aus der Matrix nachmigrieren kann. So kann eine Permanenz gegenüber wässrigen Medien und mechanischer Reibung erzielt werden.Hydrophilizing melt additives are surface-active substances such as those described in US Pat US 2008/064281 A1 and WO 2005/111299 A1 to be discribed. These melt additives are economically and technically disadvantageous compared to surface coatings. The melt additives are distributed in the cross section of the entire matrix. As a rule, they migrate to the surface only very slowly, but only there can they produce the hydrophilizing effect. Thus, when added to the melt, it requires much more amount of hydrophilizing agent to achieve the same effect as in the superficial coating. Although this disadvantage can be reduced by a bicomponent spinning process in which the additive is added only to the outer layer, the process is more complex and expensive here. Repeated wettability is achieved by allowing hydrophilizing agent that has been removed at the surface to migrate out of the matrix. Thus, a permanence against aqueous media and mechanical friction can be achieved.

Hydrophile Beschichtungen, die eine wiederholte Benetzbarkeit erlauben, sind ebenfalls literaturbekannt.Hydrophilic coatings which allow repeated wettability are also known from the literature.

Die EP 1 600 532 B1 beschreibt die Verwendung eines mit Fettsäure veresterten Glycerinalkoxylats zur Hydrophilierung von Polyolefin- und oder Polyestermaterial.The EP 1 600 532 B1 describes the use of a fatty acid esterified glycerol alkoxylate to hydrophilize polyolefin and / or polyester material.

Die US 4,988,449 A beschreibt hydrophilierende Zusammensetzungen, die Diethanolamide sowie nichtionische Tenside, Alkylphosphate, quaternäre Ammoniumsalze und/oder Alkylimidazoliumsalze enthalten. Sie werden als Netzmittel für Polyolefinvliese verwendet, um die Penetration von Flüssigkeiten zu ermöglichen.The US 4,988,449 A describes hydrophilizing compositions containing diethanolamides as well as nonionic surfactants, alkyl phosphates, quaternary ammonium salts and / or alkylimidazolium salts. They are used as wetting agents for polyolefin nonwovens to allow the penetration of liquids.

In der US 5,811,482 A werden polyethermodifizierte Polydimethylsiloxane als Hydrophilierungsmittel für Vliesstoffe offenbart.In the US 5,811,482 A Polyether-modified polydimethylsiloxanes are disclosed as hydrophilicizing agents for nonwovens.

Aus US 5,258,129 sind hydrophilierende Zusammensetzungen bekannt, die polyoxyalkylen-modifizierte Polydimethylsiloxane allein oder in Kombination mit nichtionischen Tensiden, Alkylphosphaten, quaternären Ammoniumsalzen und/oder Alkylimidazoliumsalzen enthalten.Out US 5,258,129 For example, hydrophilicizing compositions are known which contain polyoxyalkylene-modified polydimethylsiloxanes, alone or in combination with nonionic surfactants, alkyl phosphates, quaternary ammonium salts and / or alkylimidazolium salts.

Die EP 410 485 B1 beschreibt ein Verfahren zur Hydrophilierung von Polyolefinfasern und daraus hergestellten Vliesen durch Aufbringen einer wässrigen Tensidmischung auf die Oberfläche der Fasern, bei der die Zusammensetzung aus alkoxylierten Triglyceriden von C18-Fettsäuren und polyoxyalkylenmodifizierten Polydimethylsiloxan besteht.The EP 410 485 B1 describes a process for hydrophilizing polyolefin fibers and nonwovens made therefrom by applying to the surface of the fibers an aqueous surfactant mixture in which the composition consists of alkoxylated triglycerides of C18 fatty acids and polyoxyalkylene modified polydimethylsiloxane.

Die EP 0 839 947 A2 beschreibt hydrophilierende Zusammensetzungen, die aus nichtionischen Tensiden in Kombination mit einer quaternären Ammoniumverbindung und/oder einem kationisch modifizierten Polydimethylsiloxan bestehen.The EP 0 839 947 A2 describes hydrophilizing compositions consisting of nonionic surfactants in combination with a quaternary ammonium compound and / or a cationically modified polydimethylsiloxane.

In der DE 10 2012 021 742 A1 wird die Verwendung eines Gemisches aus 15-50 Gew.-% eines nichtionischen Tensids mit 15-50 Gew.-% einer quaternären Ammoniumverbindung, die bei Raumtemperatur (20°C) als Feststoff vorliegt und 15-50 Gew.-% eines neutralisierten Phosphorsäureesters zur permanenten Hydrophilierung offengelegt.In the DE 10 2012 021 742 A1 describes the use of a mixture of 15-50% by weight of a nonionic surfactant with 15-50% by weight of a quaternary ammonium compound present as a solid at room temperature (20 ° C) and 15-50% by weight of a neutralized phosphoric acid ester disclosed for permanent hydrophilization.

Die DE 37 32 378 A1 betrifft Präparationsmittelmischungen, welche Fettsäurealkanolamide mit Erweichungspunkten > 70°C als Verklebungsstopp-Komponenten enthalten, für Synthesefasern, speziell für Fasern aus Polyacrylnitril, die als Schnittfasern Verwendung finden sowie die Verwendung dieser Präparationsmittelmischungen zur Präparierung von Stapelfasern, speziell auf Polyacrylnitril-Basis. Die JP 002002020971 A beschreibt eine ölige Substanz zum Hochgeschwindigkeitsspinnen von synthetischen Fasern.The DE 37 32 378 A1 relates to spin finish mixtures which contain fatty acid alkanolamides with softening points> 70 ° C. as bonding stop components, for synthetic fibers, especially for fibers made of polyacrylonitrile, which are used as cut fibers and the use of these spin finish mixtures for the preparation of staple fibers, especially based on polyacrylonitrile. The JP 002002020971 A describes an oily substance for high speed spinning of synthetic fibers.

All diesen Beschichtungsmitteln ist gemeinsam, dass sie in Form von wässrig verdünnbaren Ölen, Pasten oder wässrig vorverdünnten Emulsionen oder Dispersionen vorliegen.All these coating agents have in common that they are in the form of aqueous dilutable oils, pastes or aqueous prediluted emulsions or dispersions.

Sie sind dafür vorgesehen, aus wässrig verdünnter Flotte appliziert zu werden. Nach Applikation der wässrigen Flotte durch Sprühen, Dippen, Rakeln oder Walzenauftrag wird das Wasser durch einen Trocknungsprozeß entfernt. Die Beschichtung liegt dann in Form eines flüssigen Films bis hin zu einer streichfähigen Paste vor. Die Beschichtungen, die heute zum Stand der Technik zählen, können aufgrund ihrer zumindest teilweisen Wasserlöslichkeit, -emulgierbarkeit bzw. dispergierbarkeit durch wässrige Flüssigkeiten wieder abgelöst werden. Aufgrund ihrer zumeist öligen bis wachsartigen Konsistenz als Beschichtung können sie mechanisch abgerieben werden.They are intended to be applied from aqueous dilute liquor. After application of the aqueous liquor by spraying, dipping, knife coating or roller application, the water is removed by a drying process. The coating is then in the form of a liquid film to a spreadable paste. The coatings, which are state of the art today, can be removed again because of their at least partial water solubility, emulsifiability or dispersibility by aqueous liquids. Due to their mostly oily to waxy consistency as a coating they can be rubbed off mechanically.

Die permanent hydrophilen Eigenschaften werden in der Regel dadurch erzielt, dass die Tensidfilme durch Kontakt mit wässrigen Medien einen raschen Viskositätsanstieg erfahren und dadurch in eine wenig wasserlösliche Gelphase übergehen, die aber durch weitere Zugabe wässriger Medien wieder gelöst werden kann.The permanently hydrophilic properties are generally achieved by the surfactant films undergo a rapid increase in viscosity by contact with aqueous media and thereby pass into a little water-soluble gel phase, but which can be redissolved by further addition of aqueous media.

Der vorliegenden Erfindung liegen Überlegungen zugrunde, eine besonders wasserfeste und reibechte hydrophile Beschichtung zu erzielen, indem der wasserunlösliche Anteil der Beschichtung angehoben wird und die Sprödigkeit der Beschichtung erhöht wird. Weiterhin sollen mit der hydrophilen Beschichtung in einem einstufigen Prozeß hydrophobe hautpflegende Substanzen aufgebracht werden, ohne dass sich die Benetzbarkeit wesentlich verschlechtert.The present invention is based on considerations to achieve a particularly waterproof and rubbed hydrophilic coating by the water-insoluble portion of the coating is increased and the brittleness of the coating is increased. Furthermore, hydrophobic skin-care substances should be applied to the hydrophilic coating in a one-step process, without the wettability deteriorating significantly.

Ausgangspunkt der Überlegungen sind Anwendungen aus den Bereichen Kosmetik und Wäschepflege, in denen wasserfeste Beschichtungen zum Einsatz kommen, die hydrophobe Hautpflegemittel wie Esteröle/- wachse, silikonbasierte Öle oder Wachse, und/oder native oder paraffinische Öle oder Wachse enthalten können.The starting point of the considerations are applications in the fields of cosmetics and laundry, in which water-resistant coatings are used which may contain hydrophobic skin care agents such as ester oils / waxes, silicone-based oils or waxes, and / or native or paraffinic oils or waxes.

Man kennt aus der Kosmetik wasserfeste Sonnenschutzformulierungen, die Emulgatoren auf Basis organischer Phosphorsäureester enthalten, oftmals Kaliummonocetylphosphat formuliert mit langkettigen Alkoholen wie Cetylstearyalkoholen und/oder Partialglyceriden, z.B. beschrieben in der US 2013/0177510 A1 , der DE 10 2012 214 716 A1 , der EP 2 545 896 A1 und der EP 2 545 901 A1 .Water-resistant sunscreen formulations comprising emulsifiers based on organic phosphoric esters, often potassium monocetylphosphate formulated with long-chain alcohols such as cetylsteary alcohols and / or partial glycerides, eg described in US Pat US 2013/0177510 A1 , of the DE 10 2012 214 716 A1 , of the EP 2 545 896 A1 and the EP 2 545 901 A1 ,

Man kennt aus dem Bereich der Haarpflege sogenannte Spülungen oder Conditioner, die aus wässrigen Emulsionen/Dispersionen angewendet werden und deren Gleit- und Pflegestoffe nach dem Auswaschen teilweise im Haar verbleiben, also wasserfest sind.From the field of hair care, so-called rinses or conditioners are known which are applied from aqueous emulsions / dispersions and their lubricants and care substances after washing partially remain in the hair, so are waterproof.

Hauptkomponenten dieser Haarpflegeformulierungen sind meist kationische Tenside, die als Monomere oder Polymere eingesetzt werden können in Kombination mit längerkettigen Fettalkoholen und/oder Siloxanen und Wasser. Oft kommen noch hydrophobe Gleitmittel wie native, paraffinische oder halbsynthetische Öle oder Wachse zum Einsatz. Solche Formulierungen sind beispielsweise beschrieben in der EP 1 413 285 A1 , der WO 2010/136285 A1 , der WO 2014/069388 A1 , der DE 197 05 822 A1 und der DE10 2008 030 136 A1 .Main components of these hair care formulations are mostly cationic surfactants which can be used as monomers or polymers in combination with longer-chain fatty alcohols and / or siloxanes and water. Often hydrophobic lubricants such as native, paraffinic or semi-synthetic oils or waxes are used. Such formulations are described for example in US Pat EP 1 413 285 A1 , of the WO 2010/136285 A1 , of the WO 2014/069388 A1 , of the DE 197 05 822 A1 and the DE10 2008 030 136 A1 ,

Außerdem sind Wäscheweichspüler auf Basis kationischer Tenside bekannt, die nach dem Spülvorgang zumindest teilweise auf der Wäsche verbleiben, also in gewissem Maße wasserfest sind, u.a. beschrieben in DE 44 03 686 A1 , EP 0 387 064 A1 , GB 1 104 441 A1 . Die US 4,126,562 A schlägt polymere kationische Salze in Kombination mit nichtionischem Glycerolmonostearat oder Sorbitanstearat als Wäscheweichformulierung vor.In addition, fabric softeners based on cationic surfactants are known which remain at least partially on the laundry after the rinsing process, that is to say are water-resistant to a certain extent, inter alia described in US Pat DE 44 03 686 A1 . EP 0 387 064 A1 . GB 1 104 441 A1 , The US 4,126,562 A proposes polymeric cationic salts in combination with nonionic glycerol monostearate or sorbitan stearate as a laundry softening formulation.

Die am häufigsten verwendeten kationischen Tenside in Haar- und Wäscheweichspülern sind quaternäre Trialkylammoniumsalze und Esterquats.The most commonly used cationic surfactants in hair and laundry conditioners are quaternary trialkylammonium salts and esterquats.

Die hier im Stand der Technik beschriebenen wasserfesten Formulierungen aus dem Bereich der Kosmetik und Wäschepflege erfüllen die Anforderungen an die zu erreichende Permanenz auf hydrophoben Substraten, die Abriebbeständigkeit und die Benetzungsgeschwindigkeit nicht hinreichend.The water-resistant formulations described in the state of the art in the field of cosmetics and laundry care meet the requirements for the permanence to be achieved on hydrophobic substrates, the abrasion resistance and the wetting speed are insufficient.

So ist der in Formulierungen für wasserfeste Sonnenschutzprodukte verwendete Emulgator Kaliumcetylphosphat letztlich noch zu leicht wasserlöslich, die nichtionischen Emulgatoren Cetylstearylalkohol und die pflanzlichen Partialglyceride nicht genügend benetzungsaktiv gegenüber wässrigen Medien. Die Haar- und Wäscheweichformulierungen können zwar so formuliert sein, dass sie hinsichtlich der Benetzungsgeschwindigkeit die Anforderungen an eine hydrophile Beschichtung für hydrophobe Flächengebilde aus thermoplastischen Materialien erfüllen können, sind aber nicht hinreichend abriebstabil und permanent.For example, the emulsifier potassium cetyl phosphate used in formulations for waterproof sunscreen products is ultimately too water-soluble; the nonionic emulsifiers cetylstearyl alcohol and the vegetable partial glycerides are not sufficiently wetting active with respect to aqueous media. While the hair and fabric softener formulations may be formulated to meet the requirements of a hydrophilic coating for hydrophobic sheets of thermoplastic materials in terms of wetting speed, they are not sufficiently abrasion resistant and permanent.

Auf den hydrophilen Lagen von Absorptionsartikeln findet man unter Umständen hautpflegende Substanzen.Skin-care substances may be found on the hydrophilic layers of absorbent articles.

Um die Hautverträglichkeit, z.B. von Inkontinenzprodukten zu verbessern, besteht die Möglichkeit, die hydrophilen Abdeckvliese, die in Kontakt mit der Haut kommen, beim Zusammenfügen der Einzellagen in der Serienproduktion des Absorptionsartikels mit hydrophoben Pflegelotionen auszurüsten. Somit wird zunächst die hydrophilierende Beschichtung auf das flächige Substrat aufgebracht, das in der Fügemaschine der Serienproduktion weiterverarbeitet wird und in einem 2. Prozessschritt die Pflegelotion. Im Verfahren nach EP 1 671 609 B 1 wird die Lotion in Form eines Musters aus mehreren Streifen auf die körperseitige Oberfläche des Abdeckvlieses appliziert, damit die flüssigkeitsdurchleitende Eigenschaft des Abdeckvlieses weiter gegeben ist.In order to improve the skin compatibility, eg of incontinence products, there is the possibility that the hydrophilic cover fleeces, which come into contact with the skin, to equip with hydrophobic care lotions when assembling the individual layers in the series production of the absorbent article. Thus, first the hydrophilizing coating is applied to the flat substrate, which is further processed in the joining machine of series production and in a second process step, the care lotion. In the process according to EP 1 671 609 B 1 the lotion is applied in the form of a pattern of several stripes on the bodyside surface of the cover fleece, so that the liquid-permeable property of the cover fleece is given.

Das Verfahren nach WO 2012/047986 A2 schlägt eine Lotion zur Applikation auf das Abdeckvlies eines Hygieneartikels vor, die neben 0,1-90 Gew.-% der hydrophoben Pflegekomponente (Paraffinwachs, Petrolatum) noch 0,1 bis 25 Gew.-% eines ethoxylierten Monolaurinsäureesters und 0,1 bis 50 Gew.-% eines ethoxylierten Monostearinsäureesters und ein Trägermaterial enthält. Die Zusammensetzung wird zwar als hydrophil beschrieben, jedoch auf eine bereits flüssigkeitsdurchlässige und somit hydrophile oder hydrophilierte Abdecklage appliziert.The procedure according to WO 2012/047986 A2 proposes a lotion for application to the cover fleece of a hygiene article, in addition to 0.1-90 wt .-% of the hydrophobic care component (paraffin wax, petrolatum) or 0.1 to 25 wt .-% of an ethoxylated Monolaurinsäureesters and 0.1 to 50 Wt .-% of an ethoxylated Monostearinsäureesters and a carrier material. Although the composition is described as hydrophilic, but applied to an already liquid-permeable and thus hydrophilic or hydrophilized cover layer.

Nach heutigem Stand der Technik werden also zumeist hydrophilierende Beschichtungen verwendet, die bei Raumtemperatur eine flüssige bis pastöse, bestenfalls schmalzartige Konsistenz haben und somit leicht von der Oberfläche abgerieben werden können. Diese geringe Reibechtheit führt in der Weiterverarbeitung zu Problemen durch klebrige Ablagerungen, die zu häufigem Abschalten und Reinigen der Maschinen zwingen. Weiterhin führt ein mechanisches Abreiben der Beschichtung zu verschlechterten hydrophilen Eigenschaften des Substrats.According to the current state of the art, therefore, hydrophilic coatings are usually used which have a liquid to pasty, at best roomy, lumpy consistency at room temperature and can therefore be easily rubbed off the surface. This low rubbing fastness leads to problems in further processing by sticky deposits, which force frequent shutdown and cleaning of the machines. Furthermore, mechanical abrasion of the coating results in degraded hydrophilic properties of the substrate.

Zudem bestehen die Beschichtungen aus zumeist gut wasseremulgierbaren Tensiden, die in gewissem Maße durch wässrige Medien abgelöst werden können. Dadurch kann die Permanenz/wiederholte Benetzbarkeit verringert werden. Eine Oberflächenbeschichtung kann unverdünnt, verdünnt aus Lösungsmittel oder verdünnt aus wässriger Emulsion/Dispersion direkt auf das Flächengebilde (Folie, Schaum, Textil) oder in einer Vorstufe auf die Filamente oder Fasern, die danach zum textilen Flächengebilde weiterverarbeitet werden, appliziert werden.In addition, the coatings consist mostly of readily emulsifiable surfactants, which can be removed to some extent by aqueous media. This can reduce permanence / repeated wettability. A surface coating can be applied undiluted, diluted from solvent or diluted from aqueous emulsion / dispersion directly onto the fabric (film, foam, textile) or in a precursor to the filaments or fibers which are subsequently processed into fabric.

In einem darauffolgenden Prozessschritt werden Pflegeöle oder -wachse (sog. Lotions) auf das zuvor hydrophilierte Substrat appliziert.In a subsequent process step, care oils or waxes (so-called lotions) are applied to the previously hydrophilized substrate.

Die Aufgabe der Erfindung besteht darin, ein Mittel zur hydrophilen Beschichtung von hydrophoben Oberflächen von Substraten für Medizin- und Hygieneartikel zu schaffen mit schneller wiederholter Benetzbarkeit, geringer Ablöseneigung gegenüber wässrigen Medien und mechanischer Reibung. Weiterhin sollen dem hydrophilierenden Mittel hydrophobe, hautpflegende Substanzen zugesetzt werden können, ohne dass die schnelle wiederholte Benetzbarkeit wesentlich verschlechtert wird. Dadurch kann die Funktionalisierung der Oberfläche mit hydrophilierenden und pflegenden Substanzen in einem ökonomisch vorteilhaften, einstufigen Verfahren erreicht werden.The object of the invention is to provide a means for hydrophilic coating of hydrophobic surfaces of substrates for medical and hygiene articles with faster repeating Wettability, low tendency to detach against aqueous media and mechanical friction. In addition, it is intended to be able to add hydrophobic, skin-care substances to the hydrophilizing agent without the rapid repeated wettability being significantly worsened. As a result, the functionalization of the surface with hydrophilizing and care substances can be achieved in an economically advantageous, single-stage process.

Die vorliegende Erfindung löst diese Aufgabe durch ein Mittel zur hydrophilen Beschichtung von Flächengebilden aus hydrophoben thermoplastischen Materialien mit den Merkmalen von Anspruch 1.The present invention achieves this object by a means for hydrophilic coating of sheets of hydrophobic thermoplastic materials having the features of claim 1.

Die Komponenten des Mittels wurden so gewählt, dass durch Steuerung des HLB (Hydrophilic-Lipophilic-Balance) eine optimierte Benetzbarkeit erreicht wird, durch den Einsatz möglichst wenig wasserlöslicher Komponenten eine sehr gute Permanenz erreicht wird und durch die Konsistenz der Einzelkomponenten eine Konsistenz der Gesamtformulierung erreicht wird, die eine gute mechanische Beständigkeit ermöglicht. Mechanisch weniger beständige Beschichtungen, die in der Regel bei Raumtemperatur flüssig sind, zeigen eine geringere Abriebfestigkeit, sowie einen Neigung zum Fließen, so dass die Beschichtung auf benachbarte Lagen, z.B. das Verpackungsmaterial übergehen kann.The components of the composition were selected so that optimized wettability is achieved by controlling the HLB (hydrophilic-lipophilic balance), very good permanence is achieved by using as few water-soluble components as possible, and consistency of the overall formulation is achieved by the consistency of the individual components which allows good mechanical resistance. Mechanically less durable coatings, which are typically liquid at room temperature, exhibit lower abrasion resistance, as well as a tendency to flow, such that the coating is spread over adjacent layers, e.g. the packaging material can pass.

Die Unteransprüche 2 bis 12 beschreiben besonders vorteilhafte Ausgestaltungen des Mittels, die Unteransprüche 13 bis 18 beschreiben Verwendungen des Mittels.The dependent claims 2 to 12 describe particularly advantageous embodiments of the agent, the dependent claims 13 to 18 describe uses of the agent.

Das erfindungsgemäße Mittel liegt bei Raumtemperatur in einem festen Aggregatzustand vor. Die bevorzugte Darreichungsform sind schüttbare Schuppen, Flocken, Granulat, Pulver, etc. Durch die feste Konsistenz wird die Reibechtheit im Vergleich zu flüssigen oder pastösen Beschichtungen erheblich verbessert. Es besitzt gute permanent hydrophilierende Eigenschaften und verleiht den damit ausgerüsteten Substraten eine rasche wiederholte Benetzbarkeit und ein gutes Durchleitungsvermögen von wässrigen Flüssigkeiten.The composition of the invention is in a solid state at room temperature. The preferred dosage form are pourable flakes, flakes, granules, powders, etc. Due to the solid consistency, the rub fastness is significantly improved compared to liquid or pasty coatings. It has good permanent hydrophilicity properties and imparts to the substrates so equipped a rapid repeated wettability and good flowability of aqueous liquids.

In dem erfindungsgemäßen Mittel ist der Anteil an Komponenten, die bei Raumtemperatur in flüssigem Aggregatzustand vorliegen, nicht höher als dass das Mittel bei Raumtemperatur noch eine genügend feste Konsistenz aufweist, um zu einer schüttbaren Darreichungsform verarbeitet werden zu können, ohne dass die Partikel aneinander haften. Die erfindungsgemäße Zusammensetzung hat eine Konsistenz, die sie bei Raumtemperatur unter Anwendung moderater Drücke nicht streichfähig macht.In the composition according to the invention, the proportion of components which are present in the liquid state at room temperature is not higher than that the composition still has a sufficiently solid consistency at room temperature in order to be able to be processed into a pourable dosage form without the particles adhering to one another. The composition of the invention has a consistency that makes it non-spreadable at room temperature using moderate pressures.

Das erfindungsgemäße Mittel soll bevorzugt unverdünnt durch eine Schmelzeapplikation auf das Substrat aufgebracht werden. Es muß daher in der Schmelze als homogenes Öl in geeigneter Viskosität vorliegen. Aufgrund der gewünscht geringen Wasserlöslichkeit des erfindungsgemäßen Mittels kann eine Applikation aus wässriger Flotte nur stark verdünnt, bei erhöhter Temperatur und/oder unter Verwendung eines Lösungsvermittlers (z.B. Isopropanol) appliziert werden.The agent according to the invention should preferably be undiluted by a melt application to the substrate be applied. It must therefore be present in the melt as a homogeneous oil in suitable viscosity. Due to the desired low water solubility of the composition according to the invention, an application from aqueous liquor can be diluted only to a high degree, applied at elevated temperature and / or using a solubilizer (eg isopropanol).

Das erfindungsgemäße Mittel ist geeignet, als hydrophile Beschichtung für Flächengebilde aus hydrophoben thermoplastischen Materialien, bevorzugt Textilien, Folien und Schäume, besonders bevorzugt Vliesstoffe verwendet zu werden. Das erfindungsgemäße Mittel kann auf das Flächengebilde oder in einer Vorstufe auf Fasern oder Filamente, die zu einem textilen Flächengebilde weiterverarbeitet werden, appliziert werden.The composition of the invention is suitable for use as a hydrophilic coating for sheets of hydrophobic thermoplastic materials, preferably textiles, films and foams, particularly preferably nonwovens. The composition according to the invention can be applied to the fabric or, in a preliminary stage, to fibers or filaments which are further processed to form a textile fabric.

Unter thermoplastische Materialien versteht man Kunststoffe, die in einem bestimmten Temperaturbereich verformbar sind. Sie können beispielsweise durch Spritzguß, Extrusion, Folienblasen, etc. verarbeitet werden. Zu den Thermoplasten zählen z.B.: Acrylnitril-Butadien-Styrol (ABS), Polyamide (PA), Polyacetat (PLA), Polymethylmethacrylat (PMMA), Polycarbonat (PC), Polyethylenterephtalat (PET), Polytrimethylenterephtalat (PTT), Polybutylenterephtalat (PBT), Polyethylen (PE), Polypropylen (PP), Polystyrol (PS), Polyetheretherketon (PEEK), Polyvinylchlorid (PVC) und thermoplastisches Polyurethan (TPU).Thermoplastic materials are plastics which are deformable in a certain temperature range. They can be processed, for example, by injection molding, extrusion, film blowing, etc. The thermoplastics include, for example: acrylonitrile-butadiene-styrene (ABS), polyamides (PA), polyacetate (PLA), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), Polyethylene (PE), Polypropylene (PP), Polystyrene (PS), Polyetheretherketone (PEEK), Polyvinylchloride (PVC) and Thermoplastic Polyurethane (TPU).

Ein hydrophiles Material ist benetzbar durch wässrige Flüssigkeiten, d.h. der Kontaktwinkel zwischen dem Material bzw. seiner Oberfläche und der Flüssigkeit beträgt weniger als 90° oder die Flüssigkeit breitet sich spontan aus. Als hydrophob bezeichnet man ein Material bzw. seine Oberfläche, wenn der Kontaktwinkel größer als 90° ist und die wässrige Flüssigkeit sich nicht spontan ausbreitet.A hydrophilic material is wettable by aqueous liquids, i. the contact angle between the material or its surface and the liquid is less than 90 ° or the liquid spreads spontaneously. A material or its surface is called hydrophobic if the contact angle is greater than 90 ° and the aqueous liquid does not spontaneously spread.

Das erfindungsgemäße Mittel besteht aus:

  1. a) 10-75% eines Alkyl- oder Alkenylphosphorsäureesters
  2. b) 5-60% hydrophobe Pflegemittel
  3. c) 5-60% nichtionische Emulgatoren und/oder hydrophile Polymere
  4. d) Neutralisationsmittel
  5. e) 0-60% weitere Zusatzstoffe (Netzmittel, Emulgatoren, Weichmacher, Konsistenzgeber, hydrophobe Pflegestoffe, Technische Additive, Pflegeadditive)
The agent according to the invention consists of:
  1. a) 10-75% of an alkyl or Alkenylphosphorsäureesters
  2. b) 5-60% hydrophobic care products
  3. c) 5-60% nonionic emulsifiers and / or hydrophilic polymers
  4. d) neutralizing agent
  5. e) 0-60% further additives (wetting agents, emulsifiers, plasticizers, bodying agents, hydrophobic care substances, technical additives, care additives)

Die Komponenten a), b) und c) werden in geschmolzenem Zustand gemischt, dann erst wird das Neutralisationsmittel zugegeben*. Die Komponenten b) und c) wirken hierbei als Lösungsmittel für den Alkylphosphorsäureester. Der Alkylphosphorsäureester kann nicht unverdünnt neutralisiert werden, da ein nicht schmelzbares Salz entsteht.The components a), b) and c) are mixed in a molten state, then only the Neutralizing agent added *. The components b) and c) act as solvents for the alkylphosphoric acid ester. The alkyl phosphoric acid ester can not be neutralized undiluted because a non-fusible salt is formed.

Der Alkylphosphorsäureester entspricht vorzugsweise der folgenden allgemeinen Formel (I):

         P(=O)(OR1)(OR2)(OR3)     (I)

worin
R1, R2 und R3 unabhängig voneinander (i) eine Alkylgruppe mit 12 bis 22 C-Atomen in der Kohlenwasserstoffkette oder eine Alkenylgruppe mit 12 bis 22 C-Atomen in der Kohlenwasserstoffkette bedeuten, und wobei die Alkylgruppen oder Alkenylgruppen jeweils verzweigt oder geradkettig, gesättigt, ungesättigt oder mehrfach ungesättigt sein können; und/oder (ii) Wasserstoff bedeuten, wobei die wenigstens einer der Reste R1, R2 und R3 nicht Wasserstoff ist.The alkylphosphoric acid ester preferably corresponds to the following general formula (I):

P (= O) (OR1) (OR2) (OR3) (I)

wherein
R 1, R 2 and R 3 independently of one another are (i) an alkyl group having 12 to 22 C atoms in the hydrocarbon chain or an alkenyl group having 12 to 22 C atoms in the hydrocarbon chain, and wherein the alkyl groups or alkenyl groups are each branched or straight-chain, saturated, may be unsaturated or polyunsaturated; and / or (ii) is hydrogen, wherein the at least one of R1, R2 and R3 is not hydrogen.

In der bevorzugten Ausführungsform ist wenigstens einer der Reste R1, R2 und R3 in Formel (I) eine Alkylgruppe oder eine Alkenylgruppe mit 10 bis 22 C-Atomen, besonders bevorzugt mit 12 bis 18 C-Atomen, ganz besonders bevorzugt C12-C18 Mono/Dialkylphosphate.In the preferred embodiment, at least one of R1, R2 and R3 in formula (I) is an alkyl group or an alkenyl group having 10 to 22 C atoms, more preferably having 12 to 18 C atoms, most preferably C12-C18 mono / dialkyl.

Als Neutralisierungsmittel für den Phosphorsäureester können alle geeigneten Basen wie Alkalihydroxide, Ammoniak und Alkanolamine oder Kombinationen daraus verwendet werden, bevorzugt nichtflüchtige Basen wie NaOH oder KOH. Es wir besonders bevorzugt konzentrierte wässrige Kali- oder Natronlauge verwendet um den Wassereintrag gering zu halten. Ein Teil des Wasser verdampft während des Neutralisationsprozesses, so dass insgesamt die Konsistenz des erfindungsgemäßen Mittels den gewünschten festen Aggregatzustand bei Raumtemperatur erhält.As the neutralizing agent for the phosphoric acid ester, any suitable bases such as alkali hydroxides, ammonia and alkanolamines or combinations thereof may be used, preferably non-volatile bases such as NaOH or KOH. It is particularly preferred that concentrated aqueous potassium or caustic soda be used to minimize water input. A portion of the water evaporates during the neutralization process, so that overall the consistency of the agent according to the invention obtains the desired solid state at room temperature.

Die funktionellen Lösungsmittel b) und c) ermöglicht die Neutralisation des Alkylphosphorsäureesters in der Schmelze und haben hydrophilierende/pflegende Eigenschaften als Komponenten der Beschichtung. Als hydrophobes Lösungsmittel/Pflegestoff können eingesetzt werden Fette, Wachse, Tri- und Partialglyceride, Fettalkohole, Esteröle und Kombinationen daraus.The functional solvents b) and c) allow the neutralization of the Alkylphosphorsäureesters in the melt and have hydrophilizing / nourishing properties as components of the coating. Fats, waxes, tri- and partial glycerides, fatty alcohols, ester oils and combinations thereof can be used as the hydrophobic solvent / care substance.

Als hydrophobes Lösungsmittel/Pflegestoff werden bevorzugt Pflegestoffe mit einem Schmelzpunkt > 30°C eingesetzt.The hydrophobic solvent / care substance used is preferably care substances having a melting point> 30 ° C.

Das hydrophobe Pflegemittel wird vorzugsweise aus der Gruppe der nativen Triglyceride, der medizinischen Weißöle, Vaseline, Esteröle, Esterwachse und/oder paraffinischen Ölen und Wachsen und der Fettalkohole und Kombinationen daraus gewählt werden. Als natives Öl oder Fett kommen insbesondere Sheabutter, Lanolin, Carnaubawachs, Kakaobutter, Bienenwachs, Mangobutter, Sonnenblumenöl, Kokosnussöl, Jojobaöl, Mandelöl, Olivenöl, Nachtkerzenöl, Pfirsichkernöl, Avocadoöl, Hanfsamenöl, Aprikosenkernöl, Sojaöl, Sonnenblumenöl" Nachtkerzenöl, Reiskleieöl, Palmkernöl, Rapsöl, Distelöl, Traubenkernöl, Arganöl, Weizenkeimöl, Kürbiskernöl, Canolaöl, hydriert oder unhydriert. Besonders bevorzugt sind Fette und Wachse mit einem Schmelzpunkt > 30°C. Die nativen Triglyceride können auch chemisch modifiziert vorliegen (z.B. Polyglyceryl 3 Bienenwachs = Ceralan). Als Mineralöl oder Wachse eignen sich insbesondere gesättigte Kohlenwasserstoffe, mikrokristalline Wachse, Petrolatum und Paraffine, bevorzugt mit einem Schmelzbereich >30°C.The hydrophobic care agent is preferably selected from the group of native triglycerides, the medicinal white oils, vaseline, ester oils, ester waxes and / or paraffinic oils and waxes and the fatty alcohols and combinations thereof. In particular, shea butter, lanolin, carnauba wax, cocoa butter, beeswax, mango butter, sunflower oil, coconut oil, jojoba oil, almond oil, olive oil, evening primrose oil, peach kernel oil, avocado oil, hemp seed oil, apricot kernel oil, soybean oil, sunflower oil, evening primrose oil, rice bran oil, palm kernel oil, rapeseed oil , Thistle oil, grapeseed oil, argan oil, wheat germ oil, pumpkin seed oil, canola oil, hydrogenated or unhydrogenated are particularly preferred fats and waxes with a melting point> 30 ° C. The native triglycerides can also be chemically modified (eg polyglyceryl 3 beeswax = cereralan) or waxes are in particular saturated hydrocarbons, microcrystalline waxes, petrolatum and paraffins, preferably having a melting range> 30 ° C.

Als native Fettalkohole eignen sich besonders Alkohole mit C-Ketten von C16-C22.Alcohols with C chains of C16-C22 are particularly suitable as native fatty alcohols.

Besonders bevorzugt sind Cetylstearylalkohol, Sheabutter und/oder Vaseline.Particularly preferred are cetylstearyl alcohol, shea butter and / or Vaseline.

Als nichtionische Emulgatoren können eingesetzt werden Fettalkoholalkoxylate, Fettsäurealkoxylate, Alkylglucoside, Alkylpolyglucoside, Fettsäurealkanolamide, alkoxylierte Fettsäurealkanolamide, Alkylaminalkoxylate, Partialglyceride und Kombinationen daraus.Nonionic emulsifiers which can be used are fatty alcohol alkoxylates, fatty acid alkoxylates, alkylglucosides, alkylpolyglucosides, fatty acid alkanolamides, alkoxylated fatty acid alkanolamides, alkylamine alkoxylates, partial glycerides and combinations thereof.

Besonders bevorzugt sind Fettalkoholethoxylate mit einem Schmelzbereich > 30°C.Particular preference is given to fatty alcohol ethoxylates having a melting range> 30 ° C.

Als hydrophile Polymere können eingesetzt werden Polyalkylenglykole, Polyvinylalkohole, modifizierte Polyvinylalkohole, modifizierte Polydimethylsiloxane, modifizierte Polyvinylpyrrolidone und Kombinationen daraus.As hydrophilic polymers can be used polyalkylene glycols, polyvinyl alcohols, modified polyvinyl alcohols, modified polydimethylsiloxanes, modified polyvinylpyrrolidones and combinations thereof.

Besonders bevorzugt sind modifizierte Polydimethylsiloxane.Particularly preferred are modified polydimethylsiloxanes.

Als weitere Zusatzstoffe können als hydrophile Weichmacher eingesetzt werden: Modifizierte Polydimethylsiloxane, organische kationische Tenside wie Mono-, Di-, oder Trialkylammoniumverbindungen, Amidoamine (Amidoaminquats), quaternierte Fettsäuretrialkanolaminestersalze (Esterquats) oder polymere kationischen Tenside und Kombinationen daraus.Further additives which may be used as hydrophilic plasticizers are: modified polydimethylsiloxanes, organic cationic surfactants such as mono-, di- or trialkylammonium compounds, amidoamines (amidoamine quats), quaternized fatty acid trialkanolamine ester salts (esterquats) or polymeric cationic surfactants and combinations thereof.

Dem erfindungsgemäßen Mittel können optional Netzmittel und weitere Hydrophilierungsmittel zugesetzt werden: Sulfobernsteinsäureester, Carboxylate, Betaine, Fettalkoholalkoxylate, Siloxane, modifizierte Polydimethylsiloxane, Sulfobernsteinsäureester, Alkylglucoside, Alkylpolyglucoside, sonstige Zuckertenside (Sorbitanester, Saccharoseester, etc.), Alkylsulfate, Alkylethersulfate, Alkylphosphate und Alkyletherphosphate, Polyvinylalkohole, Polyvinylpyrrolidone und Kombinationen hiervon.Wetting agents and further hydrophilizing agents may optionally be added to the composition according to the invention: sulfosuccinic acid esters, carboxylates, betaines, fatty alcohol alkoxylates, siloxanes, modified polydimethylsiloxanes, sulfosuccinic acid esters, alkylglucosides, alkylpolyglucosides, other sugar surfactants (sorbitan esters, sucrose esters, etc.), alkyl sulfates, alkyl ether sulfates, alkyl phosphates and alkyl ether phosphates, Polyvinyl alcohols, polyvinyl pyrrolidones and combinations thereof.

Das erfindungsgemäße Mittel kann wahlweise weitere technische Additive aus der Gruppe der Kohäsionsmittel, Gleitmittel, Komplexbildner, Korrosionsschutzmittel enthalten. Diese Zusätze können auch ionische Tenside, nichtionische Emulgatoren/Konsistenzgeber im erfindungsgemäßen Sinne sein. Diese Additive sind gemäß Stand der Technik bekannt und kommerziell verfügbar.The composition according to the invention may optionally contain further technical additives from the group of cohesive agents, lubricants, complexing agents, corrosion inhibitors. These additives may also be ionic surfactants, nonionic emulsifiers / bodying agents in the sense of the invention. These additives are known in the art and are commercially available.

Außerdem können dem Mittel Additive aus dem Bereich der Pflanzenextrakte und -Wirkstoffe, Vitamine, Provitamine und der antimikrobiellen Wirkstoffe beigefügt werden.In addition, additives from the field of plant extracts and agents, vitamins, provitamins and the antimicrobial agents may be added to the agent.

Das erfindungsgemäße Mittel kann darüber hinaus noch Pflegeadditive wie pflanzlich basierte Komponenten z.B. aus Kamille, Calendula, Aloe Vera und Vitamine oder Provitamine wie Vitamin E oder Panthenol enthalten.The composition according to the invention may additionally contain care additives such as plant-based components, e.g. from chamomile, calendula, aloe vera and vitamins or provitamins like vitamin E or panthenol.

Der Anteil der Pflegeadditive in dem erfindungsgemäßen Mittel beträgt bevorzugt 0,5 Gew.-% bis 5 Gew.-%, besonders bevorzugt bis zu 2 Gew.-%, und ganz besonders bevorzugt bis zu 1 Gew.-%.The proportion of care additives in the composition according to the invention is preferably 0.5% by weight to 5% by weight, more preferably up to 2% by weight, and most preferably up to 1% by weight.

Das erfindungsgemäße Mittel wird eingesetzt als permanent hydrophilierende Beschichtung, bevorzugt für faserbildende thermoplastische Polymere, besonders bevorzugt für Polyethylenterephthalat (PET) und Polyolefine und thermoplastisches Polyurethan, ganz besonders bevorzugt für Polypropylen und Polyethylen.The composition of the invention is used as a permanent hydrophilizing coating, preferably for fiber-forming thermoplastic polymers, more preferably for polyethylene terephthalate (PET) and polyolefins and thermoplastic polyurethane, most preferably for polypropylene and polyethylene.

Auch für die hydrophile Beschichtung von Bikomponentensystemen (z.B. Polyethylen-/Polyester-Kernmantelfasern) ist das erfindungsgemäße Mittel geeignet.Also for the hydrophilic coating of bicomponent systems (e.g., polyethylene / polyester core sheath fibers), the composition of the invention is suitable.

Das erfindungsgemäße Mittel kann sowohl unverdünnt in aufgeschmolzenem Zustand auf das Substrat appliziert werden oder verdünnt durch geeignete Lösungsmittel oder aus wässriger Dispersion oder Emulsion. Das Lösungsmittel und/oder Wasser wird in einem nachgeschalteten Prozessschritt entfernt.The composition according to the invention can be applied to the substrate either undiluted in a molten state or diluted by suitable solvents or from aqueous dispersion or emulsion. The solvent and / or water is removed in a subsequent process step.

Da das erfindungsgemäße Mittel bei Raumtemperatur nicht gut wasserlöslich und nicht leicht emulgierbar ist, wird die wässrige Emulsion oder Dispersion mit heißem Wasser (ca. 80°C) hergestellt.Since the composition according to the invention is not readily water-soluble at room temperature and is not readily emulsifiable, the aqueous emulsion or dispersion is prepared with hot water (about 80 ° C.).

Weiterhin kann das erfindungsgemäße Mittel in polaren organischen Lösungsmitteln, wie kurzkettigen Alkoholen gelöst werden oder in Mischungen aus polarem organischem Lösungsmittel und Wasser.Furthermore, the agent according to the invention can be dissolved in polar organic solvents, such as short-chain alcohols, or in mixtures of polar organic solvent and water.

Bevorzugt wird erfindungsgemäße Mittel in einer Menge von 0,1 bis 5 Gew.-% bezogen auf das Trockengewicht des jeweiligen Erzeugnisses (Faser, Filament, Vlies, Folie, Schaum) aufgebracht, besonders bevorzugt in einer Menge von 0,2-3 Gew.-%.Preference is given to compositions of the invention in an amount of 0.1 to 5 wt .-% based on the dry weight of the respective product (fiber, filament, nonwoven, film, foam), more preferably in an amount of 0.2-3 wt. -%.

Ein Verfahren zur Herstellung von permanent hydrophilierten Folien, Schaum oder Texilerzeugnissen, insbesondere Vliesstoffe, umfasst die Applikation des erfindungsgemäßen Mittels auf das Substrat aus Polyolefin, Polyester, Polyamid oder Polyurethan wie dem Fachmann bekannt, über Dosierstifte, Walzen, Tauchbäder Aufsprühen oder durch Schaumauftrag. Durch Verdünnen der Zusammensetzung mit Lösungsmittel und/oder Wasser kann eine besonders gleichmäßige Verteilung bei geringer Schichtdicke erfolgen. Das Lösungsmittel/Wasser wird nach der Applikation entfernt, wodurch die Beschichtung bei Raumtemperatur in festem Aggregatzustand auf dem Substrat vorliegt.A process for the production of permanently hydrophilized films, foams or textile products, in particular nonwovens, comprises the application of the agent according to the invention to the substrate of polyolefin, polyester, polyamide or polyurethane as known to the person skilled in the art, via dosing pencils, rollers, dipping baths or by foam application. By diluting the composition with solvent and / or water, a particularly uniform distribution can take place with a small layer thickness. The solvent / water is removed after the application, whereby the coating is in a solid state of aggregation on the substrate at room temperature.

Besonders bevorzugt handelt es sich bei den erfindungsgemäß ausgerüsteten Spinn- oder Stapelfaservliesen um physikalisch verfestigte Vliese, besonders bevorzugt durch Thermobondierung, Wasservernadelung oder Heißluft.The spun or staple fiber webs equipped according to the invention are particularly preferably physically strengthened nonwovens, more preferably by thermobonding, water needling or hot air.

In einer Variante des erfindungsgemäßen Verfahrens kann die hydrophile Beschichtung auch auf Filamente oder Fasern appliziert werden und zusätzlich die Funktion eines Schmier- und Prozesshilfsmittels übernehmen. Die so beschichteten Fasern werden zu textilen Flächengebilden weiterverarbeitet, die optional zusätzlich mit dem erfindungsgemäßen Mittel beschichtet werden können.In a variant of the method according to the invention, the hydrophilic coating can also be applied to filaments or fibers and additionally assume the function of a lubricating and processing aid. The fibers coated in this way are further processed into textile fabrics, which can optionally additionally be coated with the agent according to the invention.

Ein Verfahren zur Herstellung von permanent hydrophil beschichteten Folien kann so durchgeführt werden, dass die Folie zunächst mit dem erfindungsgemäßen Mittel beschichtet wird und anschließend perforiert wird, um die nötige Porosität zu erreichen. Umgekehrt kann die Folie auch zuerst perforiert und dann beschichtet werden.A process for the production of permanently hydrophilically coated films can be carried out so that the film is first coated with the agent according to the invention and then perforated in order to achieve the necessary porosity. Conversely, the film can also be perforated first and then coated.

Weiterhin kann das erfindungsgemäße Mittel aufgeschmolzen werden und aus der Schmelze direkt auf das Substrat appliziert werden. Ein Trocknungsschritt entfällt bei diesem Verfahren. Die Schmelzeapplikation kann auf dem Flächengebilde erfolgen, das im nächsten Schritt als funktionalisierte Schicht (Abdeck- oder Zwischenlage) zu einem Hygiene- oder Medizinartikel weiterverarbeitet wird.Furthermore, the agent according to the invention can be melted and applied directly from the melt to the substrate. A drying step is omitted in this method. The melt application can take place on the fabric, which is further processed in the next step as a functionalized layer (cover or intermediate layer) to a hygiene or medical article.

Alternativ kann die Schmelzeapplikation auch auf dem unbehandelten Substrat in der Weiterverarbeitung erfolgen, z.B. auf einem bis dahin hydrophoben Abdeckvlies in der Fügemaschine. Geeignete Beschichtungsvorrichtungen für den Schmelzeauftrag stehen bereits für die Applikation von Schmelzklebern oder Lotionen kommerziell zur Verfügung.Alternatively, the melt application may also be on the untreated substrate in further processing, e.g. on a hitherto hydrophobic cover fleece in the joining machine. Suitable coating devices for the melt application are already commercially available for the application of hot melt adhesives or lotions.

Bevorzugt werden die mit dem erfindungsgemäßen Mittel beschichteten Flächengebilde in Absorptionsartikeln eingesetzt. Unter einem Absorptionsartikel versteht man eine mehrlagige Konstruktion, vorrangig dazu gedacht, um Körperflüssigkeiten aufzunehmen. Der Absorptionsartikel besitzt üblicherweise mindestens eine obere Abdecklage, die körperseitig positioniert wird, eine Absorptionsschicht oder einen Absorptionskern, der die Flüssigkeit aufnimmt und eine flüssigkeitsundurchlässige Unterlage. Häufig werden noch hydrophile Zwischenlagen eingebaut um die Flüssigkeit besser über den Absorptionskern zu verteilen.Preference is given to the fabrics coated with the agent according to the invention in Absorbent articles used. An absorbent article is a multi-layered construction, primarily intended to contain body fluids. The absorbent article usually has at least one topsheet positioned bodyside, an absorbent layer or absorbent core which receives the liquid, and a liquid impermeable backsheet. Frequently, hydrophilic interlayers are incorporated to better distribute the liquid over the absorbent core.

Als Beispiele für solche Absorptionsartikel sind Wundabdeckungen, Wundpflaster, OP-Tischabdeckungen oder Inkontinenzartikel zu nennen.Examples of such absorbent articles are wound coverings, wound plasters, surgical table covers or incontinence articles.

Die Erfindung umfasst Absorptionsartikel, die mindestens eine flüssigkeitsdurchlässige Lage enthalten, hergestellt aus einem Flächengebilde, das mit dem erfindungsgemäßen Mittel hydrophiliert wurde.The invention comprises absorbent articles comprising at least one liquid pervious sheet made from a sheet hydrophilized with the composition of the invention.

Von der Erfindung betroffen sind auch Substrate, die vor der Beschichtung mit dem erfindungsgemäßen Mittel schon eine andere Beschichtung aufweisen, oder die nach der Beschichtung mit dem erfindungsgemäßen Mittel eine weitere Beschichtung erhalten.Also affected by the invention are substrates which already have a different coating before coating with the agent according to the invention, or which receive a further coating after coating with the agent according to the invention.

Die Erfindung umfasst auch Substrate aus solchen thermoplastischen Materialien, deren ursprünglich hydrophobe Eigenschaften durch Additive (z.B. hydrophile Schmelzeadditive) verändert wurden, bevor das erfindungsgemäße Mittel appliziert wird.The invention also includes substrates of such thermoplastic materials whose originally hydrophobic properties have been altered by additives (e.g., hydrophilic melt additives) prior to applying the composition of the invention.

Die Erfindung wird nachfolgend anhand diverser bevorzugter Versionen erläutert, die jedoch nicht in einem einschränkenden Sinn zu verstehen sind.The invention will be explained below with reference to various preferred versions, which, however, are not to be understood in a limiting sense.

Die bei Raumtemperatur festen Komponenten wurden aufgeschmolzen und alle Komponenten unter Wärmezufuhr und Rühren in der Schmelze vermischt. Der pH-Wert wurde mit konzentrierter Natronlauge eingestellt. Abkürzung T im Folgenden bedeute "Teile" als Massenanteil.The solid at room temperature components were melted and all components mixed with heat and stirring in the melt. The pH was adjusted with concentrated sodium hydroxide solution. Abbreviation T in the following means "parts" as mass fraction.

Beispielexample 1:1:

74T Stearyl Monodiphosphat1
1 Hordaphos MDST (Clariant) 10 T Fettalkoholpolyglykolether2
2 Mulsifan RT 258 (Zschimmer&Schwarz)74T stearyl monodiphosphate 1
1 Hordaphos MDST (Clariant) 10 T fatty alcohol polyglycol ether 2
2 Mulsifan RT 258 (Zschimmer & Schwarz)

6 T Cetearylalkohol3
3 Lanette 0 (BASF)6 T cetearyl alcohol 3
3 Lanette 0 (BASF)

+ NaOH (wäßrig) bis pH 6,5+ NaOH (aqueous) to pH 6.5

Aussehen MischungAppearance mixture

  • bei Raumtemperatur: weißer homogener Feststoffat room temperature: white homogeneous solid
  • bei 80°C: gelbes klares Ölat 80 ° C: yellow clear oil
Beispielexample 2:2:

74 T Dodecyl Monodiphosphat4
4 Ilcophos 205 (Ilco Chemie
10 T Fettalkoholpolyglykolether2
6T Cetearylalkohol3
+ NaOH (wäßrig) bis pH 6,574 T dodecyl monodiphosphate 4
4 Ilcophos 205 (Ilco Chem
10 T fatty alcohol polyglycol ether 2
6T Cetearyl Alcohol 3
+ NaOH (aqueous) to pH 6.5

Ausgehen MischungGoing out mix

  • bei Raumtemperatur: weißer homogener Feststoffat room temperature: white homogeneous solid
  • bei 80°C: gelbes klares Ölat 80 ° C: yellow clear oil
Beispielexample 3:3:

71 T Dodecyl Monodiphosphat4
9 T Fettalkoholmonoglykolether2
6 T Cetearylalkohol3
4 T Polyethersiloxan5
5 Silwet Hydrostable 611 (Momentive) + NaOH (wäßrig) bis pH 6,571 T dodecyl monodiphosphate 4
9 T fatty alcohol monoglycol ether 2
6 T cetearyl alcohol 3
4 T polyether siloxane 5
5 Silwet Hydrostable 611 (Momentive) + NaOH (Aqueous) to pH 6.5

Aussehen MischungAppearance mixture

  • bei Raumtemperatur: weißer homogener Feststoffat room temperature: white homogeneous solid
  • bei 80°C: gelbes klares Ölat 80 ° C: yellow clear oil
Beispielexample 4:4:

37T Stearyl Monodiphosphat1
5 T Fettalkoholpolyglykolether2
3 T Cetearylalkohol3
45 T Sheabutter6
+ NaOH wässrig bis pH 6,537T stearyl monodiphosphate 1
5 T fatty alcohol polyglycol ether 2
3 T Cetearyl alcohol 3
45 T shea butter 6
+ NaOH aqueous to pH 6.5

Aussehen MischungAppearance mixture

  • bei Raumtemperatur: weißer homogener Feststoffat room temperature: white homogeneous solid
  • bei 80°C: gelbes klares Ölat 80 ° C: yellow clear oil
Beispiel 5Example 5

37 T Dodecyl Monodiphosphat4
5 T Fettalkoholpolyglykolether2
3T Cetearylalkohol3
45 T Sheabutter6
+ NaOH (wäßrig) bis pH 6,537 T dodecyl monodiphosphate 4
5 T fatty alcohol polyglycol ether 2
3T Cetearyl Alcohol 3
45 T shea butter 6
+ NaOH (aqueous) to pH 6.5

Aussehen MischungAppearance mixture

  • bei Raumtemperatur: weißer homogener Feststoffat room temperature: white homogeneous solid
  • bei 80°C: gelbes klares Ölat 80 ° C: yellow clear oil
Referenzreference 11 Kommerzielles Hydrophilierungsmittel7 Commercial Hydrophilizing Agent 7 AussehenAppearance

  • bei Raumtemperatur: gelbes klares Ölat room temperature: yellow clear oil
Referenzreference 22

50 T Kommerzielles Hydrophilierungsmittel7
7 Cirrassol PP 842A(Croda) 50 T Sheabutter6
6 Sheabutter raffiniert (Naissance)50 T Commercial Hydrophilizing Agent 7
7 Cirrassol PP 842A (Croda) 50 T shea butter 6
6 shea butter refined (Naissance)

AussehenAppearance Mischungmixture

  • bei Raumtemperatur: trübe inhomogene Flüssigkeitat room temperature: cloudy inhomogeneous liquid
  • bei 80°C: gelbes klares Ölat 80 ° C: yellow clear oil
Referenzreference 33

65 T Sorbitanmonooleat7
35 T hydr. Rizinusöl ethoxyliert8 65 T sorbitan monooleate 7
35 T hydr. Castor oil ethoxylated 8

AussehenAppearance Mischungmixture

  • bei Raumtemperatur: gelbes klares Ölat room temperature: yellow clear oil
Referenzreference 44

36 T Sorbitanmonooleat7
20 T hydr. Rizinusöl ethoxyliert8
8 z.B. Croduret 25 (Croda)
44 T Sheabutter5 36 T sorbitan monooleate 7
20 T hydr. Castor oil ethoxylated 8
8 eg Croduret 25 (Croda)
44 T shea butter 5

Aussehen MischungAppearance mixture

  • bei Raumtemperatur: trübe inhomogene Flüssigkeitat room temperature: cloudy inhomogeneous liquid
  • bei 80°C: gelbes klares Ölat 80 ° C: yellow clear oil

Als Substrat wurde ein hydrophobes thermisch verfestigtes Polypropylen-Spinnvlies mit einem Flächengewicht von 30 g/qm gewählt.The substrate chosen was a hydrophobic thermally bonded polypropylene spunbonded nonwoven having a basis weight of 30 g / m 2.

Die hydrophilierenden Beschichtungen wurden aus wässrig-ethanolischer Lösung durch Sprühauftrag appliziert und bei Raumtemperatur getrocknet.The hydrophilizing coatings were applied by spray application from aqueous ethanolic solution and dried at room temperature.

Die Applikationsmenge (bezogen auf das unausgerüstete Vlies) wird durch Auswaage bestimmt.Das beschichtete Vlies wird auf 2 Lagen Filterpapier gelegt (MN 618), welche die Absorptionsschicht im Hygiene oder Medizinartikel simulieren.The amount of application (based on the unextruded fleece) is determined by weight. The coated fleece is placed on 2 layers of filter paper (MN 618), which simulate the absorption layer in hygiene or medical articles.

Test der Permanenz der Hydrophilierung;Test of permanence of hydrophilization; Wiederholte Flüssigkeitseinsinkzeit (Tropfentest)Repeated liquid absorption time (drop test)

Eine Vliesprobe wird auf 2 Lagen Filterpapier platziert. Es werden im Abstand von 1 cm 20 x 1 Tropfen künstlicher Urin (0,9 Gew.-%ige Kochsalzlösung) auf das Vlies getropft. Die Tropfstellen werden zuvor angezeichnet. Es wird die Anzahl der Tropfen gezählt, die innerhalb von 2 Sekunden einsinken.A nonwoven sample is placed on 2 layers of filter paper. At intervals of 1 cm, 20 × 1 drop of artificial urine (0.9% by weight saline solution) is added dropwise to the fleece. The drip points are marked before. The number of drops that sink within 2 seconds is counted.

Der Versuch wird 2 x wiederholt. Bei der Wiederholung sind die gleichen Auftropfstellen zu verwenden.The experiment is repeated twice. In the repetition, the same dripping points are to be used.

Testtest derof the Benetzungsgeschwindigkeit; Benetzungstest an einer schiefen Ebene:Wetting speed; Wetting test on an inclined plane:

Die Probe wird auf eine schiefe Ebene aufgespannt, die im 30° Winkel abgeschrägt ist. 2 Tropfen künstlicher Urin werden am oberen Ende der Probe aufgegeben. Die Lauflänge der Flüssigkeit wird gemessen.

Figure imgb0001
The sample is clamped on an inclined plane, which is beveled at an angle of 30 °. 2 drops of artificial urine are given at the top of the sample. The running length of the liquid is measured.
Figure imgb0001

Claims (18)

Mittel zur hydrophilen Beschichtung von Flächengebilden aus hydrophoben thermoplastischen Materialien, enthaltend: a) 10-75% Gew.-% eines Alkyl- oder Alkenylphosphorsäureesters b) 5-60% Gew.-% hydrophobe Pflegemittel c) 5-60% Gew.-% nichtionische Emulgatoren und/oder hydrophile Polymere d) Neutralisationsmittel gekennzeichnet dadurch, dass das Mittel einen Schmelzbereich > 30°C aufweist und bei Raumtemperatur gering wasserlöslich (<33 g Substanz/l Wasser) bis unlöslich ist.Agent for hydrophilic coating of fabrics of hydrophobic thermoplastic materials, comprising: a) 10-75% wt .-% of an alkyl or Alkenylphosphorsäureesters b) 5-60% by weight of hydrophobic care agents c) 5-60% by weight of nonionic emulsifiers and / or hydrophilic polymers d) neutralizing agent characterized in that the agent has a melting range> 30 ° C and at room temperature slightly water-soluble (<33 g substance / l water) to insoluble. Mittel gemäß Anspruch 1, das zusätzlich bis zu 60% Zusatzstoffe, insbesondereNetzmittel, Emulgatoren, Weichmacher, Konsistenzgeber, hydrophobe Pflegestoffe, Technische Additive oder Pflegeadditive, bezogen auf das Gesamtgewicht enthält.Composition according to claim 1, which additionally contains up to 60% of additives, in particular wetting agents, emulsifiers, plasticizers, consistency regulators, hydrophobic care substances, technical additives or care additives, based on the total weight. Mittel gemäß Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Alkylgruppe oder Alkenylgruppe des Phosphorsäureesters 10 bis 22 C-Atomen besitzt, besonders bevorzugt 12 bis 18 C-Atome.Composition according to Claim 1 or Claim 2, characterized in that the alkyl group or alkenyl group of the phosphoric acid ester has 10 to 22 C atoms, more preferably 12 to 18 C atoms. Mittel gemäß den Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass es sich bei dem Phosphorsäureester um ein C12-C18 Mono- oder Diphosphat handelt.Agent according to claims 1 to 3, characterized in that it is the phosphoric acid ester is a C12-C18 mono- or diphosphate. Mittel gemäß den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass der hydrophobe Pflegestoff ausgewählt ist aus der Gruppe enthaltend Fette, Wachse, Tri- und Partialglyceride, Fettalkohole, Esteröle und Kombinationen daraus.Composition according to claims 1 to 4, characterized in that the hydrophobic care substance is selected from the group consisting of fats, waxes, tri- and partial glycerides, fatty alcohols, ester oils and combinations thereof. Mittel gemäß den Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass das hydrophobe Pflegemittel bevorzugt ein natives Triglycerid mit Schmelzpunkt >30°C, ein Fettalkohol mit Schmelzpunkt > 30°C und/oder ein Paraffinwachs mit Schmelzpunkt > 30°C ist.Composition according to claims 1 to 5, characterized in that the hydrophobic care agent is preferably a native triglyceride with melting point> 30 ° C, a fatty alcohol with melting point> 30 ° C and / or a paraffin wax with melting point> 30 ° C. Mittel gemäß der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das hydrophobe Pflegemittel besonders bevorzugt Sheabutter, Vaseline und/oder Cetylstearylalkohol ist.Agent according to claims 1 to 6, characterized in that the hydrophobic care agent is particularly preferably shea butter, petrolatum and / or cetylstearyl alcohol. Mittel gemäß der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der nichtionische Emulgator gewählt ist aus der Gruppe der Fettalkoholalkoxylate, Fettsäurealkoxylate, Alkylglucoside, Alkylpolyglucoside, Fettsäurealkanolamide, alkoxylierte Fettsäurealkanolamide, Alkylaminalkoxylate, Partialglyceride und Kombinationen daraus.Composition according to claims 1 to 7, characterized in that the nonionic emulsifier is selected from the group of fatty alcohol alkoxylates, fatty acid alkoxylates, alkylglucosides, alkylpolyglucosides, fatty acid alkanolamides, alkoxylated fatty acid alkanolamides, alkylamine alkoxylates, partial glycerides and combinations thereof. Mittel gemäß der Ansprüche 1 bis 8 dadurch gekennzeichnet, dass der nichtionische Emulgator bevorzugt ein Fettalkoholalkoxylat mit einem Schmelzbereich >30°C ist.Composition according to Claims 1 to 8, characterized in that the nonionic emulsifier is preferably a fatty alcohol alkoxylate having a melting range> 30 ° C. Mittel gemäß der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das hydrophile Polymer ausgewählt ist aus der Gruppe bestehend aus Polyalkylenglykolen, Polyvinylalkoholen, modifizierten Polyvinylalkoholen, modifizierten Polydimethylsiloxanen, modifizierten Polyvinylpyrrolidonen und Kombinationen daraus.Composition according to claims 1 to 9, characterized in that the hydrophilic polymer is selected from the group consisting of polyalkylene glycols, polyvinyl alcohols, modified polyvinyl alcohols, modified polydimethylsiloxanes, modified polyvinylpyrrolidones and combinations thereof. Mittel gemäß der Ansprüchen 1 bis 10, dadurch gekennzeichnet, dass das Neutralisationsmittel ausgewählt ist aus der Gruppe bestehend aus Alkalihydroxiden, Ammoniak und Alkanolaminen oder Kombinationen daraus und dem Gemisch der Komponenten a), b) und c) in der Schmelze zugesetzt wird.Composition according to claims 1 to 10, characterized in that the neutralizing agent is selected from the group consisting of alkali metal hydroxides, ammonia and alkanolamines or combinations thereof and the mixture of components a), b) and c) is added in the melt. Mittel gemäß einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass es bei Raumtemperatur (20°C) in Form eines bei moderatem Druck nicht streichfähigen Feststoffs vorliegt.Agent according to one of claims 1 to 11, characterized in that it is present at room temperature (20 ° C) in the form of a non-spreadable at moderate pressure solid. Verwendung eines Mittels gemäß einem der Ansprüche 1 bis 12 als permanent hydrophile Beschichtung für poröse Flächengebilde • aus polyolefinischen Fasern oder Filamenten, Folien oder Schäumen, • aus Polyesterfasern oder -filamenten oder Polyesterfolie, oder • aus Polyurethan. Use of a composition according to any one of claims 1 to 12 as a permanently hydrophilic coating for porous fabrics From polyolefinic fibers or filaments, foils or foams, • polyester fibers or filaments or polyester film, or • made of polyurethane. Verwendung eines Mittels gemäß einem der Ansprüche 1 bis 12 in unverdünnter Form als Hot-Melt-Beschichtung.Use of an agent according to any one of claims 1 to 12 in undiluted form as a hot-melt coating. Verwendung eines Mittels gemäß einem der Ansprüche 1 bis 12 in verdünnter Form als wässrige bzw. lösungsmittelhaltige Flotte.Use of an agent according to one of claims 1 to 12 in diluted form as an aqueous or solvent-containing liquor. Verwendung eines Mittels gemäß einem der Ansprüche 1 bis 12 als Spinnpräparation für Fasern-und Filamente, die später zu porösen Flachengebilden weiterverarbeitet werden.Use of a composition according to any one of claims 1 to 12 as a spin finish for fibers and filaments, which are later processed into porous sheet formations. Verwendung gemäß Anspruch 13 oder 16, dadurch gekennzeichnet, dass das Flächengebilde die Abdecklage oder Zwischenlage eines Absorptionsartikels bildet.Use according to claim 13 or 16, characterized in that the sheet forms the cover layer or intermediate layer of an absorbent article. Verwendung gemäß Anspruch 13, dadurch gekennzeichnet, daß das poröse Flächengebilde mit 0,1 bis 5 Gew.-% des Mittels beschichtet wird.Use according to claim 13, characterized in that the porous sheet is coated with from 0.1 to 5% by weight of the composition.
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