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WO2019038592A1 - Revêtement anti-adhésif - Google Patents

Revêtement anti-adhésif Download PDF

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Publication number
WO2019038592A1
WO2019038592A1 PCT/IB2018/001051 IB2018001051W WO2019038592A1 WO 2019038592 A1 WO2019038592 A1 WO 2019038592A1 IB 2018001051 W IB2018001051 W IB 2018001051W WO 2019038592 A1 WO2019038592 A1 WO 2019038592A1
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WO
WIPO (PCT)
Prior art keywords
stick coating
stick
coating
coating according
wettable
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.)
Ceased
Application number
PCT/IB2018/001051
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German (de)
English (en)
Inventor
Heiko Hesse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hescoat GmbH
Original Assignee
Hescoat GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hescoat GmbH filed Critical Hescoat GmbH
Publication of WO2019038592A1 publication Critical patent/WO2019038592A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/003—Printing plates or foils; Materials therefor with ink abhesive means or abhesive forming means, such as abhesive siloxane or fluoro compounds, e.g. for dry lithographic printing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
    • B29C33/64—Silicone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/006—Cleaning, washing, rinsing or reclaiming of printing formes other than intaglio formes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/16—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers in which all the silicon atoms are connected by linkages other than oxygen atoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00217—Wound bandages not adhering to the wound
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/003—Forme preparation the relief or intaglio pattern being obtained by imagewise deposition of a liquid, e.g. by an ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/06—Transferring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1041—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by modification of the lithographic properties without removal or addition of material, e.g. by the mere generation of a lithographic pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/16—Waterless working, i.e. ink repelling exposed (imaged) or non-exposed (non-imaged) areas, not requiring fountain solution or water, e.g. dry lithography or driography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/16—Curved printing plates, especially cylinders
    • B41N1/22—Curved printing plates, especially cylinders made of other substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/60—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which all the silicon atoms are connected by linkages other than oxygen atoms
    • C08G77/62—Nitrogen atoms

Definitions

  • Patent Application DE 10 2017 008 415 discloses a patent application of the present disclosure.
  • the present invention relates to a non-stick coating according to claim 1 and to a use of a non-stick coating according to any one of claims 12 to 18.
  • Non-stick coatings are known in the art in a sufficiently broad variety and variety to render a surface for various applications non-stickable to adhesion, build up, or wetting from or through media.
  • a lubricant-wetted, porous surface following this principle is described in US 2016/0032074 A1.
  • a surface of a cured porous polymer is impregnated with a lubricant.
  • Lubricant which expands quickly in the course of use, ensures a "slip effect" on the surface for at least a limited period of time, the non-stick properties are limited to the
  • Attenuation of the non-stick effect is almost exponentially accompanied, so that such a surface eventually becomes adhesive due to its microstructured surface, the more surface damage occurs, and the less lubricant left over.
  • a non-stick coating according to the invention comprises a viscoelastic gel-like not fully crosslinked silicone compound which has an increase in surface energy when heated from a lower temperature to 80 ° C., and after this heating is still viscoelastic and gel-like and has a coefficient of friction R of 0 , 2 to 1, 5 in the direction parallel to the surface.
  • a non-stick coating is preferably a coating whose material is non-sticky against adhesion, attachment and / or deposition and / or wetting of or through a medium, even with any type of wear, damage or processing, for example physically by abrasion, scratching or engraving, or chemically by etching a portion of the surface of the release coating.
  • the non-stick effect in this three-dimensionally altered area of the surface shows unabated anti-adhesive properties as in an intact area.
  • Coating preferably a coating of a material with a suitably high viscosity and a very low modulus of elasticity in one
  • Range from 0.1 MPa to 30 MPa more preferably in the range of 0.1 MPa to 20 MPa, and more particularly 0.1 MPa to 15 MPa.
  • cross-linking becomes descriptive of at least one physical, preferably also a chemical
  • Networking used. Alternatively, it can be used in networking
  • the silicone compound is preferably in the context of the invention
  • crosslinkable silicone in particular a silicone that a, preferably additive, crosslinking is accessible.
  • silicones which are suitable for release coatings, for example KNS-330 or KNS-339 from Shin-Etsu Chemical Co., Ltd.
  • a not fully crosslinked silicone compound is in the context of the invention, a silicone compound of a crosslinkable silicone, wherein the
  • Crosslinking process stops before reaching a possible possible full crosslinking, or wherein the silicone compound from the outset, a deficiency of a crosslinking agent (crosslinker) is added.
  • Silicones consist of individual siloxane units. Here are the
  • Siloxanü may have one to four further substituents, depending on the number of remaining valences on the oxygen. Siloxane units can therefore be mono-, di-, tri- and tetrafunctional. In symbolic
  • R3SiO [R2SiO] nS iR3 eg poly (dimethylsiloxane)
  • Branched polysiloxanes which have branching elements as trifunctional or tetrafunctional siloxane units.
  • Type [MnDnTn] The branching point (s) is / are incorporated either in a chain or a ring.
  • Cyclic polysiloxanes are difunctional in ring form
  • Crosslinked polysiloxanes in this group are chain or ring-shaped molecules linked to planar or three-dimensional networks by means of tri- and tetrafunctional siloxane units.
  • chain formation and crosslinking are the dominant principles.
  • Silicones can be further classified according to the silicon-bonded substituents.
  • the siloxane backbone may contain various hydrocarbons, silicon functional and organofunctional groups may be present. A subdivision into non-, silicon or organofunctional is therefore expedient.
  • All of the aforementioned silicones may be silicone compounds in the sense of the invention.
  • silicone compound may well contain unwanted impurities as additional ingredients.
  • Nonstick coating can be deliberately offset so that a
  • coating according to the invention substantially still consists of a silicone compound.
  • fillers or media may be: hard particles such as
  • Particle Particle; and other additives such as fluorine compounds, waxes and slip particles.
  • electrically insulating materials such as zirconia can be used.
  • An inventive non-stick coating has a particularly high coefficient of friction in a direction parallel to the surface of the
  • Non-stick layer wherein no, preferably only a negligible, adhesion in the orthogonal direction to the surface of the non-stick layer (adhesive adhesion) occurs.
  • This negligible Adhesion in the orthogonal direction to the surface, as well as the particularly high friction adhesion parallel to the surface can be as each in
  • non-stick coatings according to the invention have a layer thickness of 250 nm to 2 mm and a glass transition temperature below 0 ° C.
  • Nonstick coatings according to the invention can also have a layer thickness of 250 nm to 2 mm or a glass transition temperature below 0 ° C.
  • Non-stick coatings a layer thickness of 500 nm to 2 cm and a glass transition temperature below 0 ° C on. invention
  • Non-stick coatings may also have a layer thickness of 500 nm to 2 cm or a glass transition temperature below 0 ° C.
  • Material 1 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent and 0.4 part by weight of catalyst.
  • Material 2 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 3 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 4 consisting of 100 parts by weight of a silicone compound according to the invention crosslinked with tetra-N-butyl titanate.
  • Material 5 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 6 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 7 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 8 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 9 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 10 consisting of 100 parts by weight of a silicone compound according to the invention with 1 part by weight of crosslinking agent, 0.4 parts by weight
  • Material 11 consisting of a support material (layer of silicone resin 100 parts by weight), dried with 100 parts by weight of a visco-elastic silicone compound according to the invention as a cover layer.
  • Material 12 consisting of 100 parts by weight of a silicone compound according to the invention with 30 parts by weight of a visco-elastic
  • Silicone compound consisting of 100 parts by weight of a silicone compound according to the invention with 0.2 parts by weight of crosslinking agent, 0.2 parts by weight of catalyst and 30 parts by weight of a visco-elastic silicone compound.
  • Material 14 consisting of 100 parts by weight of a silicone compound according to the invention with 0.8 parts by weight of crosslinking agent and 30 parts by weight of a visco-elastic silicone compound.
  • Material 15 consisting of 100 parts by weight of a visco-elastic silicone compound according to the invention with 10 parts by weight of crosslinking agent.
  • Material 16 consisting of 100 parts by weight of a visco-elastic silicone compound according to the invention with 10 parts by weight of catalyst.
  • non-stick coating have a particularly high coefficient of friction ⁇ ⁇ 0.2 to 1.5 in parallel direction
  • the samples were cleaned in advance with isopropanol and dried before being measured at various temperatures.
  • As reference materials both a commercial silicone resin, Tego Nonstick 60 from Evonik, and a commercial PTFE non-stick coating were used.
  • a friction coefficient MR 0.070 could be measured for the silicone resin as a reference value.
  • an inventive non-stick coating ideally has very low modulus of elasticity.
  • the modulus values were determined by means of a
  • the samples were prepared in advance with isopropanol cleaned and dried before a measurement at the various temperatures.
  • the commercial silicone resin was first used again and dried at a total drying time of 10 minutes at 80 ° C, 10 minutes at 160 ° C and 20 minutes at 220 ° C and then at 22 ° C, an E modulus of 2.35 GPa measured to 2.51 GPa as a reference value.
  • an inventive non-stick coating ideally has a surface energy of typically 5 mN / m to 50 mN / m.
  • Preferred coatings have a surface energy in a range from 6 mN / m to 31 mN / m, preferably in a range from 7 mN / m to 21 mN / m, more preferably in a range from 7 mN / m to 16 mN / m, and also in a range of 13 mN / m to 20 mN / m, and also in a range of 26 mN / m to 45 mN / m.
  • Non-stick coatings were measured in the context of the invention, the contact angle of test liquids whose surface tensions incl. Disperse and polar content is known on the non-stick coating according to the invention. These fractions enter the interfacial tensions between the solid and the liquid, for which a suitable model is used.
  • the known quantities, ie the measured contact angle and the disperse and polar fraction of the surface energy of the test liquid contain water and diiodomethane itself according to y and x.
  • the sought disperse and polar fractions of the surface energy of the solid are in the intercept c and the slope m included.
  • the material was applied to a glass plate as a carrier and depending on the solvent content only after 24 hours to volatilize the
  • Solvent started with the measurement at a starting temperature of 20 ° C. Between each measurement, the samples were successively tempered for 20 minutes at the respective temperature and then either the still warm measuring substrate (measurement curve "warm” in FIG. 1) was tempered. or the cooled to room temperature measuring substrate (measured curve "cold” in Figure 1) . The measurements were carried out to an average temperature of 340 ° C (see Figure 1).
  • inventive non-stick coating drops measured at a temperature resolution of +/- 10 ° C.
  • a preferred non-stick coating can also comprise a visco-elastic gelatinous, not fully crosslinked silicone compound, wherein the silicone compound contains substantially no silicone oil.
  • a silicone compound containing substantially no silicone oil means a composition that is less than 15% by weight, less than 10% by weight, less than 5% by weight, less than 2 , 5% by weight, less than 1% by weight, preferably less than 0.5% by weight, even more preferably less than 0.1% by weight or less than 1% by weight, and most preferably (within the analytical determination limits) no silicone oil covers (in each case based on the total weight of the silicone oil-free composition of the silicone compound).
  • a non-stick coating according to the invention additionally contains a crosslinker which reacts with the silicone compound
  • Crosslinking reaction can enter.
  • Particularly preferred are:
  • Hydrogenpolysiloxanes with a high content of reactive Si-H for example a polymethylhydrosiloxane from ABCR GmbH.
  • An inventive non-stick coating preferably additionally contains a catalyst for the crosslinking reaction, for example a silicon-soluble platinum catalyst, for example a platinum catalyst. divinyltetramethyldisiloxane complex with 3 to 3.5% by weight of platinum from ABCR GmbH.
  • a catalyst for the crosslinking reaction for example a silicon-soluble platinum catalyst, for example a platinum catalyst. divinyltetramethyldisiloxane complex with 3 to 3.5% by weight of platinum from ABCR GmbH.
  • a non-stick coating according to the invention additionally contains a further visco-elastic at room temperature
  • Silicone compound in particular a (poly) siloxane or a (poly) silazane, for example a linear siloxane such.
  • a (poly) siloxane or a (poly) silazane for example a linear siloxane such.
  • octamethyltrisiloxane or in particular a cyclic siloxane such.
  • decamethylcyclopentasiloxane or octamethylcyclotetrasiloxane any manufacturer or a methyl-substituted organopolysilazane, for example Silazan KiON HTA 1500 from AZ Electronic Materials.
  • a preferred embodiment of a non-stick coating according to the invention consists essentially of one
  • an inventive non-stick coating has no surface-applied, in particular one
  • lubricant such as is the case with so-called silicone foul release products (coatings to counteract algae growth).
  • Silicone oils, paraffins, mineral oils or polyolefins are usually used as lubricants in order to settle early stages of algae growth on their sliding film instead of on the substrate. Taking along this algae growth, the lubricant thus comes directly into the sea through contact with water.
  • a non-stick coating according to the invention is dried in the preparation at a temperature up to 220 ° C, preferably up to 340 ° C, more preferably up to 440 ° C and especially preferably up to 600 ° C.
  • a non-stick coating according to the invention can be used within a wide temperature range.
  • Preferred non-stick coatings can be used for at least 24 hours in a temperature range up to 880K.
  • Temperature change cycles remain visco-elastic and gel-like for at least 24 hours.
  • non-stick coatings can be produced, which have an increase in the surface energy during heating from a lower temperature to 80 ° C, and which at a
  • Non-stick coatings also remain viscoelastic and gel-like for up to 500 ° C for at least 24 hours.
  • non-stick coatings according to the invention which have an increase in the surface energy when heated from a lower temperature to 60 ° C., and which in a
  • Non-stick coating can also be dried in an oven or in the ambient air.
  • the drying of a preferred non-stick coating according to the invention can take place by means of radiation.
  • a radiation may be for example a thermal radiation with infrared or even ultraviolet light.
  • Other radiations which are suitable for drying are entirely possible within the scope of the invention and should not be excluded from this.
  • a drying in the plasma is possible.
  • Characteristic of a non-stick coating according to the invention is that the non-stick coating has on its surface areas in which the non-stick coating is more wettable than in the other areas. This has the advantage that at the wettable areas of the
  • Non-stick coating liquid media such as water-based or oil-containing, preferably printing inks, adhere better than the other areas, which are less wettable to unwettable.
  • the wettability of a preferred non-stick coating can be produced on the non-stick coating according to the invention by means of local thermal action or radiation, for example by means of a laser or VUV radiation (vacuum ultraviolet radiation).
  • a chemical action selective etching, dissolving, etc. can also be used.
  • the wettability of a preferred non-stick coating may be produced by means of, preferably selective, fluorination or by means of one, preferably selective, plasma.
  • by manipulating the contact medium preferably by adding further substances such as thixotropic resins, polar or nonpolar solvents, or adhesives such as oils, the wettability on wettable areas and the wettability on non-wettable areas of a non-stick coating according to the invention can be further enhanced.
  • a contact medium in the context of the invention as media, which can be associated with an anti-adhesive layer, for example, also inks.
  • inventive non-stick coatings leads in the context of the invention an improved flow behavior of contact media on the surface of inventive non-stick coatings.
  • the wettability of the regions of a non-stick coating according to the invention is reversible, so that, depending on
  • wettable areas in non-wettable areas preferably during an application process or during the use of a non-stick coating, as well as non-wettable area a wettable areas can be changed. Depending on the application and use of wettable or non-wettable area, this process can also be understood as deleting a region in the sense of the invention.
  • an inventive non-stick coating can be used as a surface coating of a printing tool, in particular a printing plate, a printing roller or a stamp.
  • a non-stick coating as a surface coating of a printing plate, so the printing plate can be reused. After completion or completion of a print job or simply after the printing plate is no longer needed, the wettable areas can thus be changed in the sense of the invention in the non-wettable area, and thus deleted.
  • a printing plate with a non-stick coating according to the invention can thus be used again for a new printing process with a new printed image.
  • the reversibility of the wettability of a non-stick coating according to the invention by the treatment of the wettable region with a solvent is selectively achievable.
  • the solvent the aforementioned viscoelastic silicone compound may preferably be used.
  • a solvent for example
  • a non-wettable that is, non-wettable area can also be restored via heat by the visco-elastic
  • Silicone compound during annealing or by a thermally acting radiation such as infrared radiation above a temperature of 60 ° C to a maximum of 600 ° C from the coating itself to the surface of the
  • Non-stick coating is structurable, preferably engravable. Suitable structuring methods are well known.
  • the contours of a structured non-stick coating can be produced in high-resolution due to the viscoelastic gel-like property and are in the range of less than 1 mm, less than 500 ⁇ m, less than 20 ⁇ m, preferably less than 15 ⁇ m, particularly preferably less than 5 ⁇ m, wherein ranges below 2 pm, preferably below 1 pm and more preferably below 0.5 pm to a maximum of 250 nm in the context of the invention are possible.
  • the resolution is essentially limited by the
  • Structuring method such as a patterning beam, such as a laser or electron beam, or just the edge resolution of a lithographic mask manufactured by electron beam lithography, as well as the swelling behavior of a coating according to the invention, which by the incorporated solvent and / or by the method used in the deletion.
  • the structured printed contour edges can have wettable areas with very sharp contours, which are in the range of less than 15 ⁇ m,
  • these pressure contours are wear-resistant due to the visco-elastic gel-like property, so
  • An inventive non-stick coating can according to the invention for a variety of applications, as already known
  • Non-stick coating is the case to be used.
  • a non-stick coating according to the invention can be used in a medical dressing material, preferably as a wound dressing, because of its non-stick surface properties and its viscoelastic gel-like property. It is particularly advantageous if additional, preferably antibacterial or fungicidal, substances or particles, such as copper or silver ions are introduced into the silicone compound. Or an antiseptic, such as
  • Coating and / or material support for conveying means in particular roll surfaces, gripper surfaces and the like in conveyor technology, in particular for webs, sheets, bags and blanks, for example, of film, paper or the like may be used.
  • a non-stick coating in particularly preferred embodiments may also be formed as a film.
  • a non-stick coating can also be used as a coating on a textile carrier material or other tissue such as, for example, a fabric made of glass fiber or a metal fiber, preferably copper, steel or stainless steel.
  • Nonstick coatings according to the invention can also be used, for example, as a self-cleaning coating for the insides of pipes, pipes, but also as a protective layer against the icing of surfaces.
  • non-stick coatings of the invention are applicable to glasses or the like.
  • non-stick coatings according to the invention result in the field of printing technology, e.g. in gravure, offset or
  • applications for nonstick coatings of the present invention are as nonstick coatings in medical engineering, such as in
  • Catheter or transfusion systems or in the field of prosthetics and surgery possible.
  • non-stick coatings can be carried out according to the invention, for example by spraying, knife coating, dipping, coil coating or flooding.
  • a preferred non-stick coating can also be printed on a support with a printing process.
  • a non-stick coating can only be printed on selective areas of a carrier with an extremely high resolution down to the nanometer range. Due to the non-sticking property, an impression can now be made with materials, for example a polymer, on the surface of which the printed structure appears.
  • a preferred non-stick coating can be patterned three-dimensionally, for example by laser cutting, engraving or cutting to be used as a mold or a stamp.
  • Non-stick coating by means of a 3D printing process or a
  • a preferred non-stick coating can be used in the context of the invention as a template for a casting with a material, preferably polyurethane or other pourable material, wherein the
  • wettable or non-wettable areas of the non-stick coating are formed as a negative structure, and the negative structure are transferred as a positive structure in the casting in the material.
  • a preferred non-stick coating can be used as a template for casting with a material, preferably polyurethane or another castable material, wherein a negative structure is formed in the wettable or non-wettable regions of the non-stick coating, and the negative structure as a positive structure be transferred in the casting in the material.
  • non-stick coatings according to the invention on glasses or the like for self-cleaning windows and optical lenses are possible within the scope of the invention.
  • applications for nonstick coatings of the present invention are as nonstick coatings in medical engineering, such as in
  • Non-stick coating results from the following figures, namely:
  • FIG. 1 is a measurement diagram of the surface energy of material 2
  • Figure 2 is a schematic representation of a coated with an inventive non-stick coating article in cross section
  • FIG. 3 shows a cross-section of a non-stick coating according to the invention with a surface damage
  • Figure 4 is a schematic representation of the friction and adhesive effects on the surface of a non-stick coating according to the invention in cross section;
  • FIG. 5 shows photographs of unwettable and wettable material samples of a comparative test;
  • FIG. 6a shows photographs of material samples from an adhesion test with an adhesive tape
  • FIG. 7 shows photographs of a flexibility test on material 2
  • FIG. 8 shows photographs of an adhesion test on molten
  • FIG. 9 shows photographs of material samples from a tensile direction test with an adhesive tape
  • FIG. 10 shows photographs of material samples from a non-stick test with cured lacquers, paints and lacquer raw materials
  • Figure 1 photographs of material samples from a non-stick test with liquid paints, inks and printing inks;
  • FIG. 1 shows a typical measurement diagram of the surface energy of material 2 as a material example for a method according to the invention
  • Non-stick coating shown.
  • the surface energy starts at a value of 13.2 mN / m at room temperature.
  • a temper Tempoture-induced drying process
  • the surface energy was measured again with a value of 23.43 mN / m.
  • the surface energy was measured again at room temperature (cold) and gave a value of 23.43 mN / m.
  • This increase in the measured curve which is plotted as positive slope m> 0 in the measurement diagram between the two marked points A and B, represents an increase in the surface energy when heating from a lower temperature to 80 ° C.
  • inventive non-stick coating such an increase in
  • the coated article 1 comprises a viscoelastic gel-like coating as a non-stick coating 2, which is applied to the article 5.
  • the visco-elastic gel-like non-stick coating 2 contains a
  • Silicone compound which are indicated by the polymer chains 8 and 8 ', and in addition a stored between the polymer chains viscoelastic silicone compound, which are indicated by the solvent molecules 9 and 9'.
  • the non-stick coating 2 namely on an unwettable area 4 ', there is a thermal
  • the laser beam 6 is preferably a pulsed laser beam and For example, the structuring is traversed along the drawn x-axis.
  • the solvent molecules 9 and 9' are almost completely displaced locally due to the thermal action of the laser beam 6, so that in these areas 3 and 3 'no swollen state of the non-stick coating 2, as in the non-wettable areas 4 and 4 'is the case, is present.
  • a wettable region 3 is shown in FIG. 2, on which the indicated liquid medium 7 adheres.
  • Figure 3 is a cross section of a non-stick coating 2 on a
  • Item 5 shown with a surface damage 10.
  • Surface damage 10 is, for example, a crack or the like.
  • the medium does not adhere due to mechanical surface friction effects in the
  • FIG. 4 shows a schematic representation of the friction and adhesive effects, see drawn force vectors F x (friction) and F z (adhesion), of a test body T on the surface of a non-stick coating 2 in cross-section.
  • F x force vectors
  • F z adheresion
  • the force vectors F z and F x indicate the directions in which a force is to be applied in order to detach the test body T with the mass m from the surface of the non-stick coating 2.
  • the stiction with a coefficient of static friction of R> 1 opposes, so that an enormous force is applied to the test body along the direction parallel to the surface of the non-stick coating 2 to solve.
  • FIG. 6a shows photographs of material samples from an adhesion test with an adhesive tape.
  • different material samples with the adhesive tape 3M type 396 Superbond were included
  • Adhesive tape adheres extremely strongly in the direction parallel to the surface, can not be pulled off and tears, whereby it can be pulled in
  • Silicone rubber tape adheres very strongly
  • FIG. 6 b shows photographs of material pattern material 2 from FIG. 6 F II a as an image sequence for documenting the adhesion test with an adhesive tape (adhesive tape test).
  • FIG. 7 shows photographs of a flexibility test on material 2.
  • the material 2 was as a non-stick coating 2 with a layer thickness of 200 pm on a 2 mm thick aluminum sheet as
  • Figure 8 shows photographs of adhesion testing with molten and cured materials.
  • Various materials were applied to the material 2 dried for 24 hours at room temperature (25 ° C), followed by oven drying at 20 minutes for 240 ° C performed. Subsequently, the samples were cooled. Subsequently, an adhesive tape (commercial painter's crepe) was adhered with a contact pressure of 1 kg and this then immediately withdrawn. It was judged whether the material from the surface of the
  • FIG. 9 in F V a, a material pattern from a tensile direction test with an adhesive tape glued onto a non-stick coating of material 2 according to the invention is shown.
  • the results show the orthogonal non-stick effect and the extremely strong adhesion in the direction parallel to the surface of the non-stick coating according to the invention, which can be attributed to the very high coefficient of friction of R> 1.
  • Test tape type 3M type 396 Superbond The Test tape type 3M type 396 Superbond. Photography F V b shows as a sketch of the tape, which can not be deducted. F V b also shows the pulling direction in the tests with the adhesive tape.
  • FIG. 10 shows photographs of material samples from a non-stick test with cured paints, inks and coating raw materials.
  • Various varnishes, paints and varnish raw materials were applied to the non-stick coating 2 of the material 2 (which had been dried in advance for 24 hours at 25 ° C) at room temperature (25 ° C), then an annealing in an oven 240 ° C for 20 minutes. The patterns were cooled. Subsequently, an adhesive tape
  • Coating polytetrafluoroethylene black / mica.
  • Offset printing ink is on it.
  • the ink could not completely removed and adheres to the PTFE
  • FIG. 11 shows photographs of material samples from a non-stick test with liquid paints, inks and printing inks. Different paints, colors and printing inks were applied to the surface of the
  • Non-stick coating 2 made of material 2 (which had been dried in advance for 24 hours at 25 ° C) at room temperature (25 ° C) liquid
  • Material 2 could be removed without problems, whereas they are not removable on the PTFE coating (polytetrafluoroethylene black / mica).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Paints Or Removers (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)

Abstract

Revêtement anti-adhésif comprenant un composé silicone pas entièrement réticulé, en gel visco-élastique, ledit composé silicone présentant une augmentation de l'énergie superficielle lorsqu'il est chauffé passant d'une température basse à 60 °C, et demeurant visco-élastique et gélatineux après ce chauffage et a un coefficient de frottement μR de 0,2 à 1,5 dans la direction parallèle vers la surface ainsi qu'un revêtement anti-adhésif.
PCT/IB2018/001051 2017-08-19 2018-08-19 Revêtement anti-adhésif Ceased WO2019038592A1 (fr)

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DE102017007793 2017-08-19
DEDE102017008415.7 2017-09-08
DE102017008415.7A DE102017008415A1 (de) 2017-08-19 2017-09-08 Antihaftbeschichtung

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PCT/IB2018/001058 Ceased WO2019038595A1 (fr) 2017-08-19 2018-08-19 Plaque d'impression réinscriptible
PCT/IB2018/001061 Ceased WO2019038596A1 (fr) 2017-08-19 2018-08-19 Système d'impression
PCT/IB2018/001031 Ceased WO2019038589A2 (fr) 2017-08-19 2018-08-19 Plaque d'impression

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PCT/IB2018/001031 Ceased WO2019038589A2 (fr) 2017-08-19 2018-08-19 Plaque d'impression

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DE102017008415A1 (de) 2017-08-19 2019-02-21 Hescoat GmbH Antihaftbeschichtung
CN116120785A (zh) * 2022-12-28 2023-05-16 厦门大学 导电油墨及制备方法、塑胶材料及制备方法、电镀塑料

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DE102017008415A1 (de) 2019-02-21
WO2019038595A1 (fr) 2019-02-28
WO2019038589A3 (fr) 2019-05-02
DE102017122202A1 (de) 2019-02-21
DE102017122203A1 (de) 2019-02-21
WO2019038596A1 (fr) 2019-02-28
DE102017122204A1 (de) 2019-02-21

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