EP3898867A1 - Klebmasse zur verklebung auf der haut - Google Patents
Klebmasse zur verklebung auf der hautInfo
- Publication number
- EP3898867A1 EP3898867A1 EP19835370.8A EP19835370A EP3898867A1 EP 3898867 A1 EP3898867 A1 EP 3898867A1 EP 19835370 A EP19835370 A EP 19835370A EP 3898867 A1 EP3898867 A1 EP 3898867A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adhesive
- skin
- adhesive according
- meth
- acrylic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/58—Adhesives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
Definitions
- the invention relates to the technical field of adhesives, in particular adhesives for bonding to the skin, as are often used in plasters or other medical skin patches and increasingly also in sensors and similar products bonded to the skin.
- the invention proposes a specially composed adhesive which is particularly easy to remove from the skin with little pain.
- Adhesives find a wide range of uses in the manufacture of products for wound care and for other medical applications. The prerequisite for this is that such adhesives are skin-friendly; e.g. They may only contain very small amounts of residual monomers and should not have any irritating or allergenic potential.
- the main task of the adhesives used is to securely bond the product intended for application to the skin and, at the end of the application time, to remove the skin easily and as painlessly as possible.
- the former property is often regarded as the most important property of a patch or similar product, but is not always achievable.
- perspiration or sweating quite often lead to undesired premature detachment from the skin.
- An objective criterion for differentiating the breathability of plasters is the determination of the water vapor permeability (MVTR), whereby a certain amount of water, e.g. evaporated over a period of 24 hours and at a temperature of 35 ° C through an area covered with the plaster and quantified by differential weighing.
- MVTR water vapor permeability
- Corneocytes that are torn from the top layer of skin when a patch is torn off and that can then be determined on the adhesive of the removed patch P. J. Dykes et al., J. Wound Care 10, 7-10 [2001].
- WO 2004/108175 A1 describes a composition for use on the skin based on silicone, which is initially highly viscous and, after curing, becomes a soft, skin-friendly elastomer which adheres to the skin.
- WO 2010/121033 A2 describes a silicone gel system which comprises a porous carrier, a pressure-sensitive adhesive based on an acrylate copolymer and a hardened silicone gel pressure-sensitive adhesive thereon.
- US 2005/0287191 A1 relates to a hydrogel / fiber composite which is obtained by impregnating the fibers with a solution of polymerizable monomers and then polymerizing. Disadvantages of such systems are usually the instability in contact with water and the complex processing steps in the coating.
- WO 2009/010120 A1 describes an acrylate adhesive which comprises at least one alcohol esterified with optionally substituted acrylic acid, the latter being selected from the group of long-chain aliphatic alcohols, fatty alcohols, wax alcohols, wool wax alcohols and sterols.
- EP 1 184 039 A2 relates to an adhesive for use on the skin, which comprises the following constituents: 100 parts by weight of an acrylic copolymer, obtained from a monomer composition, comprising
- EP 1 367 109 A1 discloses a pressure sensitive adhesive strip comprising the following: comprising an adhesive layer formed from a resin composition
- a film carrying this adhesive layer which comprises a polyether urethane resin.
- Polymers based on ethylenically unsaturated monomers which contain UV crosslinkers built into the polymer structure are described, for example, in WO 03/033544 A1.
- the document discloses a process for the preparation of such polymers, in which free-radically copolymerizable phenone derivatives, which have been prepared by reacting isocyanate-reactive compounds with compounds containing isocyanate groups, are radically polymerized using a mixture of ethylenically unsaturated monomers using a polymerization initiator.
- the copolymers obtained can be used as pressure-sensitive adhesives, but are not optimized for sticking to the skin and are therefore generally not gently removable.
- compositions which contain a crosslinked copolymer which is based on alkyl (meth) acrylates and monoethylenically unsaturated aromatic ketone monomers are the subject of EP 0 246 848 A2.
- the document describes compositions which contain a crosslinked copolymer which is based on alkyl (meth) acrylates and monoethylenically unsaturated aromatic ketone monomers.
- the object of the invention was to provide a skin-friendly, adhesive, light and painless to provide skin-detachable and breathable adhesive and products equipped with it for bonding to the skin.
- a first and general object of the invention is an adhesive for bonding to the skin, in particular to human skin, which a) at least one copolymer, which can be attributed to a monomer composition, the
- such adhesives enable sufficiently stable but also easily removable and, moreover, extremely physiologically compatible bonds on the skin.
- a wide range of properties can be set using relatively few and easily accessible starting materials, particularly with regard to the balance of adhesive power and low-pain removability.
- the monomer composition on which the copolymer of the adhesive according to the invention is based comprises at least one (meth) acrylic acid alkyl ester.
- (meth) acrylic acid alkyl ester includes, in accordance with the customary use of the expert, both alkyl esters of methacrylic acid and those of acrylic acid.
- the alkyl radicals are preferably unfunctionalized alkyl radicals.
- the monomer composition comprises at least one (meth) acrylic acid alkyl ester A which contains 7 to 12 carbon atoms in the alkyl radical.
- This (meth) acrylic acid alkyl ester A is preferably selected from the group consisting of Isooctyl acrylate, lauryl acrylate and 2-ethylhexyl acrylate; in particular, this (meth) acrylic acid alkyl ester A is 2-ethylhexyl acrylate.
- (Meth) acrylic acid alkyl esters A are preferably present in the monomer composition in a total of 15 to 90% by weight, more preferably in a total of 20 to 75% by weight, in particular in a total of 40 to 73% by weight, in each case based on the total weight the monomer composition.
- the monomer composition comprises at least one (meth) acrylic acid alkyl ester B which contains 1 to 6 carbon atoms in the alkyl radical.
- This (meth) acrylic acid alkyl ester B is preferably selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate and cyclohexyl acrylate; more preferably from methyl acrylate and n-butyl acrylate.
- the monomer composition thus particularly preferably comprises methyl acrylate and / or n-butyl acrylate.
- the (meth) acrylic acid alkyl ester B is n-butyl acrylate.
- only a (meth) acrylic acid alkyl ester B is contained in the monomer composition as the (meth) acrylic acid alkyl ester.
- (Meth) acrylic acid alkyl esters B are preferably present in the monomer composition in a total of 5 to 75% by weight, more preferably in a total of 15 to 55% by weight, in particular in a total of 30 to 45% by weight, in each case based on the total weight the monomer composition.
- the monomer composition can comprise both one or more (meth) acrylic acid alkyl esters A and one or more (meth) acrylic acid alkyl esters B as well as one or more (meth) acrylic acid alkyl esters A and one or more (meth) acrylic acid alkyl esters B.
- the monomer composition comprises at least two (meth) acrylic acid alkyl esters.
- the monomer composition preferably comprises at least one (meth) acrylic acid alkyl ester B which contains 1 to 6 carbon atoms in the alkyl radical, and at least one (meth) acrylic acid alkyl ester A which contains 7 to 12 carbon atoms in the alkyl radical.
- the (meth) acrylic acid alkyl ester B is preferably selected from methyl acrylate and n-butyl acrylate.
- the monomer composition comprises methyl acrylate.
- the monomer composition comprises methyl acrylate and n-butyl acrylate.
- the (meth) acrylic acid alkyl ester A is preferably 2-ethylhexyl acrylate.
- the (meth) acrylic acid alkyl ester selected from the group consisting of methyl acrylate, n-butyl acrylate and 2-ethylhexyl acrylate.
- one or more (meth) acrylic acid alkyl esters can be present in the monomer composition.
- the ethylenically unsaturated monomer which contains at least one carboxy group (-COOH) is preferably selected from acrylic acid and methacrylic acid.
- this monomer is acrylic acid.
- the ethylenically unsaturated monomer containing at least one carboxy group in the monomer composition on which the copolymer is based is preferably from 1 to 10% by weight, more preferably from 2 to 8% by weight, particularly preferably from 3 to 7% by weight, in particular from 4 to 6 wt .-%, each based on the total weight of the monomer composition.
- the monomer composition of the copolymer of the adhesive according to the invention further comprises at least one photoinitiator.
- the photoinitiator enables the copolymer to crosslink and thus acts as an internal, i.e. crosslinker built into the polymer structure.
- This internal photoinitiator makes it possible to dispense with the addition of an external crosslinker in the production of the adhesive according to the invention.
- photoinitiators or chemical crosslinkers that are not bound to the polymer chain can remain in the mass and become exposed to the skin when the mass is applied. Since these molecules are small and capable of migration and have a high reactivity in accordance with their intended function, they can damage the skin, especially if they can pass through the cell, and can also cause health problems. Due to the photoinitiator belonging to the monomer base of the copolymer and thus incorporated into the polymer chain, the adhesive according to the invention can be provided free of such mobile, toxicologically questionable molecules.
- the photoinitiator is preferably a UV initiator.
- the photoinitiator is more preferably an acetophenone, benzophenone or benzoin-functionalized, vinyl monomer, particularly preferably an acetophenone, benzophenone or benzoin-functionalized (meth) acrylic acid ester, in particular a benzophenone-functionalized
- the photoinitiator is further preferably a Norrish type I or Norrish type II initiator, in particular a Norrish type II initiator. This means that the primary step of the crosslinking reaction is hydrogen abstraction by the photochemically excited carbonyl group, which proceeds with radical formation.
- acetophenone, benzophenone or benzoin-functionalized, vinyl monomers are benzoin acrylate (2-oxo-1,2-diphenylethyl acrylate) or the products sold under the trade names LoMiCure 450 or Visiomer 6976.
- Photoinitiators are preferably contained in the monomer composition on which the copolymer is based in an amount of 0.01-2% by weight, more preferably in an amount of 0.05-1% by weight, in particular in an amount of 0.1-1.5% by weight, based in each case the total weight of the monomer composition.
- These share ranges enable an optimal balance of absorption, possible penetration depth of the radiation and degree of cross-linking. In terms of process technology, this is expressed in easily practicable web speeds during processing.
- the adhesive according to the invention is characterized inter alia. also characterized by high achievable layer thicknesses and good shear strengths.
- the copolymer can be attributed to a monomer composition consisting of
- the copolymer can be based on a monomer composition consisting of
- the copolymer preferably has a weight-average molar mass (M w ) of less than 1,500,000 g / mol, particularly preferably less than 500,000 g / mol, in particular less than 350,000 g / mol.
- M w weight-average molar mass
- the copolymer has a molecular weight of 200,000 to 250,000 g / mol. The molecular weight is determined according to the invention by gel permeation chromatography using the method described herein.
- the adhesive according to the invention can contain one or more copolymers as described above.
- One or more copolymer (s) as described is or are preferably in the adhesive composition according to the invention to a total of 40 to 90% by weight, more preferably to a total of 50 to 80% by weight, in particular to 60 to 78% by weight, for example, 65 to 75 wt .-%, each based on the total weight of the adhesive.
- the adhesive according to the invention also contains at least one carboxylic acid ester which contains at least 10 carbon atoms.
- carboxylic acid esters have proven to be sufficiently inert in terms of an extremely low toxic potential; nevertheless, they lead to softening of the adhesive.
- the carboxylic acid ester is preferably selected from the group consisting of ethyl myristate,
- Cycloalkylcarbon Tartyl-O-acetyl citrate, Butyltrihexylcitrat, dibutyl adipate, bis (2-ethylhexyl) adipate, diisononyl adipate, bis (2-ethylhexyl) terephthalate, diethylene glycol dibenzoate, alkyl benzoates, and in particular Ci2-Ci5-alkyl benzoates, epoxidized soybean oil, castor oil and acetylated monoglycerides of fully hydrogenated castor oil (COMGHA), sunflower oil, trioctyl trimellitate and tri (2-ethylhexyl) trimellitate.
- COMPOGPA fully hydrogenated castor oil
- the carboxylic acid ester is particularly preferably selected from the group consisting of cycloalkyl carboxylic acid esters, tributyl-O-acetyl citrate, acetylated monoglycerides of fully hydrogenated castor oil (COMGHA), bis (2-ethylhexyl) terephthalate, diisononyl adipate, bis (2-ethylhexyl) adipate, epoxidized soybean oil, Trioctyl trimellitate and tri (2-ethylhexyl) trimellitate.
- COMP fully hydrogenated castor oil
- the carboxylic acid ester is a cycloalkyl carboxylic acid ester, in particular diisononylcyclohexanedicarboxylate (DINCH).
- DINCH diisononylcyclohexanedicarboxylate
- the cycloalkyl carboxylic acid esters and especially DINCH are largely unreactive and therefore medically harmless; they are also UV-transparent in the absorption region of the copolymer of the adhesive according to the invention and have a low softening point. In this respect they correspond particularly advantageously with the properties of the copolymer and enable efficient UV crosslinking of the adhesive and its processing at low temperatures.
- Carboxylic acid esters containing at least 10 carbon atoms are preferably contained in the adhesive according to the invention in a total of 5 to 60% by weight, more preferably in a total of 10 to 55% by weight, particularly preferably in a total of 15 to 45% by weight , in particular to a total of 20 to 40 wt .-%, each based on the total weight of the adhesive.
- the adhesive according to the invention wets the skin, in particular the human skin, extremely well. It develops a high instant adhesive strength, which is close to its final adhesive strength on the skin and does not require a longer application time. This is advantageous because bonds made with the adhesive according to the invention immediately become achieve full resilience and pulling off immediately after application does not differ in terms of the perceived pain from pulling it off later.
- the adhesive of the invention may contain other additives in addition to the components listed so far, e.g. Crosslinking agents, UV protection agents, antioxidants, hydrophilizing agents, tackifiers, fillers, pigments, dyes, flame retardants, foaming agents, antistatic reagents, surfactants, breathability improvers, antibacterial reagents (e.g. antibacterial silver) and / or pharmacological agents.
- the adhesive according to the invention particularly preferably contains at least one breathability improver, in particular a compound which comprises at least one polyethylene glycol sequence.
- a “breathability improver” is understood to mean an additive that increases the water vapor permeability of the adhesive compared to an adhesive that is otherwise composed identically.
- a “polyethylene glycol sequence” is understood to mean a sequence of two or more oxyethylene units (- (0-CH 2 -CH 2 -) n - with n> 2).
- the adhesive according to the invention preferably contains at least one sugar ester.
- Sugar esters are esters of sugars such as e.g. Sucrose and understood by sugar alcohols with organic or inorganic acids.
- the adhesive according to the invention particularly preferably contains at least one ester of a sugar alcohol.
- the adhesive according to the invention contains at least one sorbitan ester. Sorbitan esters are taken to mean tetravalent alcohols derived from glucitol, in particular from D-glucitol, by intramolecular ring closure, of which one or more OH groups are or are esterified, particularly preferably with a fatty acid, in particular with lauric, oil, palmitic or stearic acid is or are esterified.
- the sorbitan ester is preferably the 1,4-sorbitan ester. Such sorbitan esters are currently e.g. commercially sold under the trade name "Span”.
- the sorbitan ester is particularly preferably a polyethoxylated sorbitan ester. These compounds are obtained by linking the free OH group (s) of a sorbitan ester with polyoxyethylene.
- the chemical structure of the polyethoxylated sorbitan esters can be described in somewhat more concrete terms by the name of and the name of the fatty acid ester
- the adhesive according to the invention particularly preferably contains at least one polyethoxylated sorbitan ester selected from the group consisting of PEG-20 sorbitan monolaurate, PEG-4 sorbitan monolaurate, PEG-20 sorbitan palmitate, PEG-20 sorbitan monostearate, PEG-4 sorbitan monostearate, PEG-20 sorbitan tristearate and PEG-20 Sorbitan monooleate.
- polyethoxylated sorbitan esters are currently sold commercially, for example under the trade name "Tween”.
- the water vapor permeability of the adhesive according to the invention can be improved by adding one or more sorbitan esters. This has beneficial effects on the breathability of adhesive bonds on the skin.
- Compounds comprising at least one polyethylene glycol sequence are preferably contained in the adhesive composition according to the invention in a maximum total of 10% by weight, more preferably in a maximum of 7% by weight and in particular in a maximum of 5% by weight, in each case based on the total weight of the Adhesive.
- the adhesive composition very particularly preferably contains these compounds in a total of 0.5 to 7% by weight, in particular in a total of 1 to 6% by weight, for example a total of 1.7 to 5% by weight.
- sorbitan esters and very particularly preferably polyethoxylated sorbitan esters are contained in the adhesive composition according to the invention to a maximum of 10% by weight, more preferably to a maximum of 7% by weight and in particular to a maximum of 5% by weight, based in each case on the total weight of the Adhesive.
- the adhesive composition very particularly preferably contains these compounds in a total of 0.5 to 7% by weight, in particular in a total of 1 to 6% by weight, for example a total of 1.7 to 5% by weight.
- the adhesive according to the invention can be produced in conventional ways, for example from dispersion or solution.
- the components are simply dispersed or dissolved in a solvent.
- the adhesive is obtained by removing the solvent in a drying step.
- the adhesive according to the invention can also be obtained from the melt.
- the components are melted and mixed in the melt or partly incorporated into the melt of the copolymer.
- the invention further relates to a method for producing an adhesive according to the invention, the
- ll comprises melting at least the copolymer and melt mixing at least the copolymer and the carboxylic acid ester.
- the process is carried out in particular at low temperatures, preferably at less than 60 ° C., in particular at less than 50 ° C. and very particularly preferably at less than 40 ° C.
- this also enables the incorporation of temperature-sensitive substances, for example proteins.
- the other components of the PSA according to the invention described here can also be incorporated heterogeneously and in particular homogeneously into the melt.
- Another object of the invention is a pad for gluing on the skin, in particular on human skin, which has at least one carrier material and
- Conditions according to the invention have proven to be well tolerated by the skin and, in particular, to be removable with very little pain. In addition, they enable very permanent adhesions on the skin, which show no or only a very slight loss of adhesive strength even under the influence of moisture on the part of the skin or through external contact with water.
- the carrier material preferably consists of an air and water vapor permeable but water impermeable polymer layer with a thickness of approximately 10 to 200 ⁇ m. Preference is given to carrier materials which, after application of the adhesive, can be used in such a way that they meet the requirements for a functional skin patch. Examples include textiles such as woven fabrics, knitted fabrics, scrims or nonwovens, nets, foils, foams and laminates made from the above materials and papers.
- the carrier material is preferably a film, a woven fabric or a nonwoven, particularly preferably with a thickness of 20 to 200 ⁇ m, in particular with a weight per unit area of 20 to 200 g / m 2 .
- the carrier material is preferably selected from the group consisting of cotton, viscose, polypropylene, polyesters, polyamides, PET, PVC, polyethylene, polyurethanes, silicones and polylactic acid.
- the carrier material is preferably selected from the group consisting of cotton, viscose, polyesters, polyethylene and polyurethanes.
- the carrier material is particularly preferably a polyurethane film, a polyethylene film, a polyester fleece, a woven fabric made of viscose, polyester or cotton or a woven fabric made of any mixtures of viscose, polyester and / or cotton.
- the adhesive according to the invention can be applied to the backing material by conventional methods. It is usually covered on one side with the carrier material, and the resulting structure is applied as a composite. Depending on the carrier material used, the water vapor permeability, the strength of a wound covering, the padding against pressure and other physical properties of the dressing can be controlled.
- the overlay according to the invention is preferably covered with a protective layer, for example a siliconized paper or a siliconized film (release liner).
- a protective layer for example a siliconized paper or a siliconized film (release liner).
- the pad according to the invention can further comprise a substrate for absorbing wound exudate.
- the overlay according to the invention can in principle be used as a full-surface self-adhesive or partially self-adhesive skin overlay (English: dressing), in particular as a wound dressing, plaster, hygiene article, cosmetic and / or dermatological pad, patch, tape, bandage, colostomy pouch, fixation bandage, kinesio tape, cataplasma, bandage , Surgical cover or mask.
- the pad according to the invention is preferably a plaster.
- it can also be designed as a less adhesive patch or pad, for example, it being possible for the adhesive strength to be set specifically according to the particular application.
- the adhesive according to the invention is preferably present in the edition according to the invention as a layer with a layer thickness of up to 120 pm, particularly preferably up to 100 pm, in particular up to 80 pm.
- Another object of the invention is a wearable device on the skin, in particular on human skin, which comprises an adhesive according to the invention and a medical system.
- a “medical system” is understood to mean a sequence of elements which, in their entirety and in their interaction, fulfill a medical function, which can consist, for example, in the delivery of an active ingredient, in the stimulation of certain areas of the body or in the collection of medically relevant data .
- the medical device that can be worn on the skin is preferably a device for dispensing a substance, for stimulating areas of the body or for recording medical data.
- the delivery of a drug can in particular be provided transdermally; for example, patients with type 2 diabetes insulin, e.g. in a three-day rhythm.
- the stimulation is particularly preferably an electronic stimulation, e.g. electronic muscle stimulation (EMS).
- EMS electronic muscle stimulation
- Medical data can in particular be the body temperature, the heart rhythm, the blood pressure, the number of steps or the respiratory rate as well as chemical concentrations such as pH, lactate, glucose or chloride values.
- the medical system can preferably use this data to derive and output certain information, such as sleep status, stress level or training status.
- the structure of the medical system can include, in particular, a protective layer, one or more adhesive intermediate layers, one or more stamped parts, one or more insulating layers, in particular against electromagnetic radiation or interference (EMI shielding), and one or more sensors.
- a protective layer one or more adhesive intermediate layers, one or more stamped parts, one or more insulating layers, in particular against electromagnetic radiation or interference (EMI shielding), and one or more sensors.
- EMI shielding electromagnetic radiation or interference
- Another object of the invention is the use of an adhesive according to the invention for the production of bonds on the skin, in particular on the human skin.
- the adhesive according to the invention can be used in particular in a support for gluing to the skin or in a medical device that can be worn on the skin, in each case as set out above.
- the adhesive according to the invention can also be used for the production of labels for medical products or for the production of bonds in medical devices.
- the details of the molecular weights and the polydispersity D in this document relate to the determination by gel permeation chromatography. The determination is carried out on 100 ⁇ l of clearly filtered sample (sample concentration 0.5 g / l). Tetrahydrofuran with 0.1% by volume of trifluoroacetic acid is used as the eluent. The measurement is carried out at 25 ° C. A column type PSS-SDV, 10 pm, ID 8.0 mm 50 mm is used as the guard column.
- a column of the type PSS-SDV, 10 pm linear one (SN2071901) with ID 8.0 mm * 300 mm is used for the separation (columns from the company Polymer Standards Service; detection by means of a differential refractometer PSS-SECurity 1260 RID).
- the flow rate is 0.5 ml per minute.
- the calibration is carried out against PMMA standards (polymethyl methacrylate calibration)].
- the adhesive strength was determined at a test climate of 23 ° C +/- 1 ° C temperature and 50% +/- 5% rel. Humidity.
- the adhesive samples were cut to a width of 20 mm and glued to a steel plate.
- the steel plate was cleaned and conditioned before the measurement. For this purpose, the plate was first wiped with solvent and then left in the air for 5 minutes so that the solvent could evaporate.
- the side of the sample facing away from the test surface was then covered with 75 ⁇ m thick, etched PET film, which prevented the sample from stretching during the measurement. Then the test sample rolled onto the surface.
- the adhesive was rolled over back and forth five times with a 4 kg roller at a winding speed of 10 m / min.
- This paper is characterized by the fact that it has a uniform roughness in the test climate as well as a gap resistance that is correlated with human skin.
- the test results thus obtained allow conclusions to be drawn about the behavior of the adhesive composition pattern on human skin.
- the fracture pattern of the paper surface was also recorded, whereby tearing out of paper fibers (PS paper splitting) can be correlated with corneocyte removal on the skin and in particular with trauma when peeling off.
- Micro shear path (MSW, test method C):
- the procedure is as follows: A 50 ⁇ m thick sample of the adhesive is provided on one side with a 50 ⁇ m thick aluminum foil for stabilization. A test strip with a width of 10 mm and a length of 50 mm is glued to a clean steel plate in such a way that a gluing area of 130 mm2 results. The bond is created by rolling a 2 kg roll back and forth three times. The steel plate is adjusted in the measuring apparatus so that the test strip is in a vertical position and heated to 30 ° C. The system is heated to 40 ° C.
- a weight of 25 g is attached to the free end of the test strip using a clamp (6.4 g dead weight), which sheared the sample by gravity;
- a micrometer probe is placed on a short piece of test tape that protrudes over the steel plate, which registers the deflection depending on the measurement time, or the shear path is recorded graphically.
- the micro shear path S1 maximum micro shear path
- the micro shear path S2 is the shear distance after a weight load of 15 min.
- the weight is carefully removed from the sample and relaxation is then observed for a further 15 min. After this relaxation time, the micro shear path S2 (relaxed micro shear path) is determined.
- the micro shear path quotient E S2 / S1 (elastic component) is determined from the two measured values.
- This quotient E is a measure of the elasticity (Resetting force) of the PSA.
- the difference V 1-E (viscous portion) is a measure of the inelastic flow properties of the adhesive.
- the K value is a measure of the average molecular size of high polymer substances.
- the principle of the method is based on the capillary viscometric determination of the relative solution viscosity.
- the test substance is dissolved in toluene by shaking for 30 minutes, so that a 1% solution is obtained.
- the run-out time is measured in a Vogel-Ossag viscometer at 25 ° C and from this the relative viscosity of the sample solution is determined in relation to the viscosity of the pure solvent. According to Fikentscher [P. E. Hinkamp, Polymer, 1967, 8, 381] the K value can be read.
- the patches were then worn for 6 hours during light physical activity (PAL factor between 1, 4 and 1, 7).
- the plaster was then removed by hand (according to the test person's habits in using plaster) and the individual sensation with regard to
- the static glass transition temperature is determined using dynamic differential calorimetry in accordance with DIN EN ISO 11357-2.
- the information on the glass transition temperature Tg relates to the glass transition temperature value Tg according to DIN 53765: 1994-03, unless otherwise stated in the individual case.
- Moisture penetration rate (MVTR, test method H):
- the moisture penetration rate was determined according to the standard DIN EN 13726-2: 2002-06 (test method for primary dressings (wound dressings), part 2: moisture penetration rate of permeable film dressings).
- DIN EN 13726-2: 2002-06 test method for primary dressings (wound dressings), part 2: moisture penetration rate of permeable film dressings.
- This standard is a so-called "gravimetric cup method”.
- beakers are filled with a defined amount of water and their opening (10 cm 2 ) is covered with the test material.
- the measuring vessel is placed in a climatic cabinet with constant temperature (37 ⁇ 1 ° C) and air humidity (relative air humidity ⁇ 20%).
- the loss of water in the measuring vessel is determined after a defined time.
- a reactor conventional for radical polymerizations was charged with monomers and solvents as indicated below. After nitrogen gas had been passed through for 45 minutes, the reactor was heated to a jacket temperature of 70 ° C. with stirring. 50 g of AIBN, dissolved in 950 g of ethyl acetate, were added at an internal temperature of 65 ° C. After the exothermic phase, an internal reactor pressure of 0.49 bar was set and polymerization was continued at the constant outside temperature. One hour after the start, 50 g of AIBN, dissolved in 950 g of ethyl acetate, were again added; a further hour later, an internal reactor pressure of 0.59 bar was set.
- the dried samples were measured using a mercury vapor lamp in a UV curing system of the Eltosch dryer combination, 560 UVLGR (160 / SL) + inert system with Hg UV lamp (power density: 160 W / cm) from Eltosch at a web speed of 4 m / min with a UVC dose of 180 mJ / m 2 (M11-M17: 120 mJ / m 2 ).
- the light output was measured using an EIT UV Power Puck II radiometer the company EIT Inc. determined.
- UVA 320-390 nm
- UVB 280-320 nm
- UVC 250-260 nm
- UVV 395-445 nm
- MVTR additive formulations with breathability-improving additives
- the base polymer was melted using barrel melt and metered into a twin-screw extruder under a pressure of 5 bar.
- the liquid plasticizer and / or the MVTR additive were metered into the twin-screw extruder.
- the melt was transferred to a siliconized PET film (75 ⁇ m layer thickness) via a slot nozzle for flat shaping.
- the process parameters with regard to the jacket temperature and speed were selected in the twin-screw extruder so that the temperature of the melt at the die outlet - measured using an IR thermometer from Fluke, type Ti20 - was 35 ° C (when using P12 or P13 at 120 ° C) .
- the coating by means of a nozzle was carried out in such a way that a
- the light required in the UVC range was generated by means of a mercury vapor lamp and regulated according to the required dose by an aperture system.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials For Medical Uses (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Medicinal Preparation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018222213.4A DE102018222213A1 (de) | 2018-12-18 | 2018-12-18 | Klebmasse zur Verklebung auf der Haut |
| PCT/EP2019/085764 WO2020127356A1 (de) | 2018-12-18 | 2019-12-17 | Klebmasse zur verklebung auf der haut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3898867A1 true EP3898867A1 (de) | 2021-10-27 |
Family
ID=69157774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19835370.8A Pending EP3898867A1 (de) | 2018-12-18 | 2019-12-17 | Klebmasse zur verklebung auf der haut |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3898867A1 (de) |
| CN (1) | CN113366075A (de) |
| DE (1) | DE102018222213A1 (de) |
| WO (1) | WO2020127356A1 (de) |
Citations (7)
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|---|---|---|---|---|
| EP0578151A1 (de) * | 1992-07-08 | 1994-01-12 | Beiersdorf Aktiengesellschaft | Schmelzhaftkleber für Medical-Produkte |
| EP0624635A2 (de) * | 1993-05-11 | 1994-11-17 | Nitto Denko Corporation | Medizinische druckempfindliche Klebmittel und daraus geformte medizinische Binden |
| US5686504A (en) * | 1995-05-10 | 1997-11-11 | Avery Dennison Corporation | Pigmented, UV-cured, acrylic-based, pressure sensitive adhesives, and method for making same |
| US20030171454A1 (en) * | 1999-06-18 | 2003-09-11 | 3M Innovative Properties Company | Wet-stick adhesives, articles, and methods |
| EP1367109A1 (de) * | 2002-05-29 | 2003-12-03 | Nitto Denko Corporation | Druck-abhängige Haftmittel |
| US20150265742A1 (en) * | 2014-03-18 | 2015-09-24 | Nitto Denko Corporation | Pressure-sensitive adhesive tape or sheet for application on skin |
| JP6219130B2 (ja) * | 2013-11-05 | 2017-10-25 | リケンテクノス株式会社 | 医療用塩化ビニル樹脂組成物およびそれからなる医療用器具 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737559A (en) | 1986-05-19 | 1988-04-12 | Minnesota Mining And Manufacturing Co. | Pressure-sensitive adhesive crosslinked by copolymerizable aromatic ketone monomers |
| JP3144895B2 (ja) * | 1992-06-30 | 2001-03-12 | 積水化学工業株式会社 | 医療用粘着テープもしくはシート |
| US6998432B2 (en) | 2000-09-01 | 2006-02-14 | Nitto Denko Corporation | Adhesive composition for skin and adhesive tape or sheet for skin comprising the composition |
| US6902740B2 (en) * | 2001-07-09 | 2005-06-07 | 3M Innovative Properties Company | Pyrrolidonoethyl (meth)acrylate containing pressure sensitive adhesive compositions |
| DE10150486A1 (de) | 2001-10-16 | 2003-04-24 | Basf Ag | Copolymerisierbare Photoinitiatoren für UV-vernetzbare Klebstoffe |
| SE526906C2 (sv) | 2003-06-10 | 2005-11-15 | Moelnlycke Health Care Ab | Metod att anbringa ett skyddsskikt på hud innehållande en högviskös silikonkomposition |
| JP2005325032A (ja) * | 2004-05-12 | 2005-11-24 | Three M Innovative Properties Co | 緑茶成分含有粘着剤 |
| EP1607412A1 (de) | 2004-06-07 | 2005-12-21 | First Water Limited | Hydrogelverbundstoffe |
| DE102004029732A1 (de) * | 2004-06-21 | 2006-01-19 | Basf Ag | Hilfsmittel enthaltend Cyclohexanpolycarbonsäurederivate |
| DE102007033807A1 (de) | 2007-07-13 | 2009-01-22 | Beiersdorf Ag | Modifizierte Acrylatklebemassen |
| US20100267302A1 (en) | 2009-04-17 | 2010-10-21 | 3M Innovative Properties Company | Silicone gel adhesive construction |
| EP2878606B1 (de) * | 2013-11-29 | 2015-08-05 | ICAP-SIRA S.p.A. | UV-härtbare Zusammensetzung und druckempfindliches Haftmittel mit Atmungsfähigkeit daraus, sowie Verfahren zur Herstellung davon |
| EP3896135B1 (de) * | 2018-12-12 | 2025-12-03 | Nitto Denko Corporation | Band oder folie zur hautbefestigung |
-
2018
- 2018-12-18 DE DE102018222213.4A patent/DE102018222213A1/de active Pending
-
2019
- 2019-12-17 WO PCT/EP2019/085764 patent/WO2020127356A1/de not_active Ceased
- 2019-12-17 CN CN201980090863.3A patent/CN113366075A/zh active Pending
- 2019-12-17 EP EP19835370.8A patent/EP3898867A1/de active Pending
Patent Citations (7)
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| EP0578151A1 (de) * | 1992-07-08 | 1994-01-12 | Beiersdorf Aktiengesellschaft | Schmelzhaftkleber für Medical-Produkte |
| EP0624635A2 (de) * | 1993-05-11 | 1994-11-17 | Nitto Denko Corporation | Medizinische druckempfindliche Klebmittel und daraus geformte medizinische Binden |
| US5686504A (en) * | 1995-05-10 | 1997-11-11 | Avery Dennison Corporation | Pigmented, UV-cured, acrylic-based, pressure sensitive adhesives, and method for making same |
| US20030171454A1 (en) * | 1999-06-18 | 2003-09-11 | 3M Innovative Properties Company | Wet-stick adhesives, articles, and methods |
| EP1367109A1 (de) * | 2002-05-29 | 2003-12-03 | Nitto Denko Corporation | Druck-abhängige Haftmittel |
| JP6219130B2 (ja) * | 2013-11-05 | 2017-10-25 | リケンテクノス株式会社 | 医療用塩化ビニル樹脂組成物およびそれからなる医療用器具 |
| US20150265742A1 (en) * | 2014-03-18 | 2015-09-24 | Nitto Denko Corporation | Pressure-sensitive adhesive tape or sheet for application on skin |
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| See also references of WO2020127356A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113366075A (zh) | 2021-09-07 |
| DE102018222213A1 (de) | 2020-06-18 |
| WO2020127356A1 (de) | 2020-06-25 |
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