EP1097005A1 - Corps moules munis d'un revetement, a effet dispersif dans l'eau - Google Patents

Corps moules munis d'un revetement, a effet dispersif dans l'eau

Info

Publication number
EP1097005A1
EP1097005A1 EP99929248A EP99929248A EP1097005A1 EP 1097005 A1 EP1097005 A1 EP 1097005A1 EP 99929248 A EP99929248 A EP 99929248A EP 99929248 A EP99929248 A EP 99929248A EP 1097005 A1 EP1097005 A1 EP 1097005A1
Authority
EP
European Patent Office
Prior art keywords
water
coating
molded body
flat
coating agent
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.)
Withdrawn
Application number
EP99929248A
Other languages
German (de)
English (en)
Inventor
Peter Bier
Peter Capellen
Jürgen Röhner
Siegfried Anders
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.)
Bayer AG
Original Assignee
Bayer AG
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
Priority claimed from DE19829081A external-priority patent/DE19829081A1/de
Priority claimed from DE19829082A external-priority patent/DE19829082A1/de
Application filed by Bayer AG filed Critical Bayer AG
Publication of EP1097005A1 publication Critical patent/EP1097005A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/872—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone characterised by differential heating or cooling
    • B29C48/873—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone characterised by differential heating or cooling in the direction of the stream of the material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/06—Coating with compositions not containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00—Polymeric substrate or laminate
    • B05D2201/02—Polymeric substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31507—Of polycarbonate

Definitions

  • the present invention relates to water-spread coated, flat molded articles made of thermoplastics, two processes for their preparation and their
  • water-spreading is understood to mean the property of a surface to form a contact angle of less than 20 degrees with a water drop applied thereon.
  • a water-spreading coating is accordingly a coating which brings about this property of a surface.
  • Shaped bodies with a water-spreading surface have the property that water which gets on their surface does not contract there to separate drops, but that the drops spread out and flow into a closed layer when touched. This results in an improved light reflection on the surface moistened with water and a better light transmission in the case of transparent moldings. In addition, the dripping of water from the bottom of the molded body is difficult.
  • antidrop properties which inhibit the formation of drops, are required in particular for various glazing materials made of thermoplastic materials. It is desirable there that the condensation water or precipitation water which precipitates thereon does not drop out in the form of drops, but rather that, following the gradient of the material, it flows off in a closed layer or at least in coherent paths at the lower edge.
  • inorganic constituents such as colloidal metal oxides, in particular aluminum oxide, or colloidal silicon dioxide have been incorporated into the coating compositions (EP-A 7 681 877 or EP-A 7 606 193).
  • a 2 017 002 made of a plastic that contains surface-active agents, such as polyalkylene glycol.
  • surface-active agents such as polyalkylene glycol.
  • the water-spreading effect of this additive is not sufficient.
  • the weather resistance of the plastic is also impaired.
  • Metals or semi-metals combine the advantages of great hardness and good wettability with water without swelling, but have the disadvantage that they do not adhere at all.
  • binders are used to anchor the oxides on the plastic surface, the wettability of the oxides and thus the water-spreading effect of the coating decrease, and the disadvantages of the binders emerge: mechanical sensitivity in the case of hydrophilic binders and insufficient water spreading in the case hydrophobic binder.
  • the present invention is based on the object of providing water-spreading, coated shaped bodies made of thermoplastic materials and possibilities for their use.
  • this object is achieved by a process for the production of water-spread coated, flat shaped bodies made of thermoplastic materials by extrusion, cooling of the shaped bodies, application and drying of one
  • Coating agent on the molded article characterized in that the coating agent is water-based and that it is applied to at least one side of the flat molded article immediately after its production with the help of an application roller, which preferably rotates in the opposite direction to the transport direction of the molded article, and then dried (hereinafter referred to as "Process A") and the provision of the water-repellent, flat molded articles made of thermoplastic materials and their use as a component of automobiles, greenhouses, swimming pools, stadiums, train stations, factory halls, roof covers. Walls, luminaire covers, architectural glazing, skylights, Visors, glasses, graphics, billboards, displays, packaging or windows for all kinds of transportation.
  • the object according to the invention is achieved by a process for the production of water-spread coated, flat molded articles made of thermoplastic materials by extrusion, cooling of the molded articles.
  • Applying and drying a coating agent on the molded article characterized in that the coating agent is water-based and that it is applied to at least one side of the flat molded article immediately after its production with the aid of a corrugated applicator roller and then dried (hereinafter briefly “Process B “called) and by providing the water-spread coated, flat molded bodies made of thermoplastic materials and their use as a component of automobiles, greenhouses, swimming pools, stadiums, train stations, factories, roof covers, walls, people covers, architectural glazing, skylights, visors, Glasses, graphics, billboards, displays, packaging or windows for all kinds of transportation.
  • a corrugated applicator roller in the sense of the present invention is an applicator roller which has fine rib-like elevations or depressions on its surface.
  • the corrugated applicator roller according to the invention is preferably made of steel or rubber and has a diameter of preferably 0.5 to 25 cm, particularly preferably 0.8 to 2 cm.
  • the roller particularly preferably consists of a stainless steel rod with a stainless steel spiral with uniform intervals.
  • a spiral doctor blade from Firmy BYK-Gardner GmbH, D-82534 Geretsried, Germany or a so-called "K-rod” from Erichsen GmbH & Co. KG, D-58675 Hemer, Germany can be used as such.
  • the application roller preferably does not have its own drive, but is driven only by the continuous movement of the flat shaped body to be coated, the coating application is far less susceptible to malfunction than known process knowledge.
  • the application roller is coated with the aqueous coating composition e.g. acted upon by a metering device, preferably a pump.
  • a metering device preferably a pump.
  • there is a collecting container in which any excess coating composition is collected and returned to the metering device, so that the process according to the invention can be operated very economically and ecologically.
  • sheets, particularly preferably hollow chamber sheets, or film webs are preferably produced by the extrusion by subjecting thermoplastic material, preferably plastic granules, to a customary shape by extrusion.
  • thermoplastic material preferably plastic granules
  • the molded body to be coated runs at a belt speed that allows the aqueous coating composition to be applied in amounts of 3 to 15 g / m 2 to the surface of the molded body.
  • the molded body passes through a drying zone in which the coating is preferably dried at room temperature to 80 ° C., and then through a curing zone in which the coating is annealed at 90 to 155 ° C., preferably at 120 to 150 ° C. becomes.
  • the known devices such as conveyor belts with and without take-off rollers can be used for the transport of the extruded molded bodies. Drying and tempering can also be carried out using known devices, preferably using hot air, infrared radiators or by indirect heat.
  • coated shaped bodies are advantageously separated into the desired size after coating.
  • Suitable coating compositions for the process according to the invention are in particular water-based coating compositions comprising
  • R 1 is a hydrocarbon radical with 1 to 30 carbon atoms
  • R 2 is hydrogen or a hydrocarbon radical with 1 to 6 carbon atoms
  • A is a single bond or a divalent hydrocarbon radical with 1 to 30 C atoms
  • B is a single bond or a divalent hydrocarbon radical with 1 to 30 C atoms
  • M n + is an n-positively charged cation
  • Preferred compounds according to the general formula (1) are compounds represented by the general formula (2)
  • R ' is an aliphatic hydrocarbon radical with 1 to 30 C atoms
  • A is a single bond or a divalent aliphatic hydrocarbon radical with 1 to 3 C atoms
  • B is a single bond or a divalent aliphatic hydrocarbon radical with 1 to 3 C atoms
  • M n + is an n-fold positively charged cation.
  • Particularly preferred compounds according to the general formula (1) are compounds represented by the general formula (3)
  • R 1 is an aliphatic hydrocarbon radical with 1 to 30 C atoms
  • M n + is an n-fold positively charged cation.
  • alkali salts or the alkaline earth salts or mixtures thereof are preferred.
  • Alkali salts are very particularly preferred.
  • An example of this is bis (2-ethylhexyl) sulfonate sodium salt.
  • the compounds represented by the general formula (1) can be prepared by a known method. Some of them are commercially available.
  • the compounds represented by the general formula (1) can be used as pure substance or as a solution in any solvent or solvent mixture for the preparation of the coating compositions. They are preferably used as a solution.
  • the commercial product Dapro ® U99 can of Daniel Products Company, Inc., New Jersey, USA, used.
  • This is a solution of 40 g sulfonosuccinic acid bis (2-ethylhexyl ester) sodium salt in 43 g 2-butoxyethanol, 4 g ethanol, 3 g water and 10 g polyethylene glycol fatty acid ester (mixture based essentially on polyethylene glycol oleic acid esters, polyethylene glycol palmitic acid esters and polyethylene glycol stearic acid esters).
  • the coating composition contains, besides the three components A. B and C mentioned, other substances, namely the solvents of the solution of the compound represented by the general formula (1).
  • the solution of the compound represented by the general formula (1) should preferably be a concentration tration of 5 to 95 wt .-%, particularly preferably 10 to 90%, very particularly preferably 20 to 60%.
  • oxides according to the invention of a metal or a semimetal oxides of elements of the 3rd or 4th main group or the 2nd, 3rd,
  • the oxides according to the invention can contain small amounts of other elements as dopants.
  • Oxides of a metal or a semimetal of the 3rd or 4th main group of the periodic table of the elements are particularly preferably used. Examples include: aluminum oxide or silicon oxide.
  • Oxides of a metal or a semimetal from the 4th main group of the Periodic Table of the Elements are very particularly preferably used. Among them, silica is most preferred.
  • the oxides of a metal or semimetal according to the invention are preferably used as sol, i.e. used as an aqueous, colloidal solution which preferably has a concentration of 10 to 50% by mass of the metal oxide and whose particles preferably have an average diameter of less than 5 ⁇ m.
  • the oxide particles are preferably present in the sol according to the invention in an average size of less than 200 nm, particularly preferably in the range from 5 to 100 nm.
  • the particle size is determined using an ultracentrifuge.
  • the mixture of an acid and water according to the invention consists of more than
  • weak acids are preferred. Weak acids are those that have a p k s value greater than 2. Aliphatic carboxylic acids are particularly preferably used. Acetic acid is very particularly preferably used.
  • the coating composition according to the invention contains 0.005 to 2 parts by weight, preferably 0.01 to 0.5 parts by weight, particularly preferably 0.05 to 0.4 parts by weight of component A.
  • the coating composition according to the invention contains 1 to 20 parts by weight. preferably 2 to 20 parts by weight, particularly preferably 3 to 8 parts by weight of component B.
  • the coating agent according to the invention has a pH of less than 6, preferably less than 5.
  • the coating compositions according to the invention may optionally contain further components such as e.g. Contain surfactants and organic solvents for better wetting of the substrate as well as leveling agents or defoamers.
  • further components such as e.g. Contain surfactants and organic solvents for better wetting of the substrate as well as leveling agents or defoamers.
  • the coating compositions according to the invention are preferably produced by preparing the sol of the metal or semimetal oxide used in water or diluting a commercially available sol with water to the desired concentration in the coating composition according to the invention, then advantageously a weakly acidic pH, for example by adding
  • Acetic acid adjusts and adds the amount of component A of the coating composition of the invention intended for the coating compositions.
  • the coating agent and optionally also the sol of the oxide of a metal or a semimetal that may be used talls filtered, so that the respective composition contains only particles with a particle diameter of preferably less than 5 microns.
  • Coating compositions are applied in amounts of 3 to 15, preferably 6 to 12 g / m 2 surface, so that the tempered layer has a layer thickness of preferably 0.2 to 0.3 ⁇ .
  • molded bodies thus equipped with antidrop properties are particularly suitable as glass substitutes of all kinds, preferably for roof covers, walls,
  • Luminaire covers, architectural glazing, skylights, visors, glasses, graphics, billboards, displays, packaging and windows for all kinds of transportation.
  • thermoplastics for coating are described, for example, in Becker Braun, Plastics Manual, Carl Hanser Verlag, Kunststoff, Vienna.
  • the plastics can contain additives.
  • any polycarbonate can be coated.
  • Polycarbonates suitable according to the invention are both homopolycarbonates and copolycarbonates. A mixture of the polycarbonates suitable according to the invention can also be used.
  • polycarbonates can be replaced by aromatic polyester carbonates.
  • the polycarbonates can also contain polysiloxane blocks. Their preparation is described, for example, in US Pat. Nos. 3,821,315, 3,189,662 and 3,832,419.
  • Preferred polycarbonates are those based on the bisphenols of the general formula (4)
  • Z is a divalent organic radical having 6 to 30 carbon atoms and containing one or more aromatic groups.
  • Examples of bisphenols according to the general formula (4) are bisphenols which belong to the following groups:
  • Particularly preferred polycarbonates are the homopolycarbonate based on bisphenol A, the homopolycarbonate based on 1,1-bis- (4-hydroxyphenyl) -3,3,5- trimethylcyclohexane and the copolycarbonates based on bisphenol A and 1,1 - bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane.
  • the bisphenols according to the general formula (4) described can be prepared by known processes, e.g. from the corresponding phenols and ketones.
  • Polycarbonates can be produced by known processes. Suitable processes for the production of polycarbonates are, for example, the production from bisphenols with phosgene by the phase interface process or from bisphenols with phosgene by the process in homogeneous phase, the so-called pyridine process, or from bisphenols with carbonic acid esters by the melt transesterification process. These manufacturing processes are e.g. described in H. Schnell, “Chemistry and Physics of Polycarbonates", Polymer Reviews, Volume 9, pp. 31-76, Interscience Publishers, New York, London, Sidney, 1964. The production processes mentioned are also described in D. Freitag, U Grigo, PR Müller, H. Nouvertne, "Polycarbonates” in Encyclopedia of Polymer Science and Engineering, Volume 1 1,
  • melt transesterification process is particularly described in H. Schnell, "Chemistry and Physis of Polycarbonates", Polymer Reviews, Volume 9, pp. 44-51, InterScience Publishers, New York, London, Sidney, 1964 and in DE-A 1 031 512, in US-A 3,022,272, in US-A 5,340,905 and in US-A 5,399,659.
  • Carbonic acid diesters which can be used to produce polycarbonates by the melt transesterification process are, for example, diaryl esters of carbonic acid, the two aryl radicals preferably each having 6 to 14 carbon atoms.
  • the polycarbonates suitable according to the invention preferably have a weight average molar mass (M w ), which can be determined, for example, by ultracentrifugation or scattered light measurement, of 10,000 to 200,000 g / mol. They particularly preferably have a weight average molar mass of 12,000 to 80,000 g / mol.
  • M w weight average molar mass
  • the average molar mass of the polycarbonates according to the invention can be set, for example, in a known manner by means of an appropriate amount of chain terminators.
  • Suitable chain terminators are both monophenols and monocarboxylic acids.
  • Suitable monophenols are, for example, phenol, p-chlorophenol, p-tert-butylphenyol, cumylphenol or 2,4,6-tribromophenol, and also long-chain alkylphenols, such as 4- (l, l, 3,3-tetramethylbutyl) phenol or monoalkylphenols or dialkylphenols with a total of 8 to 20 carbon atoms in the alkyl substituents such as 3,5-di-tert-butylphenol, p-tert-octylphenol, p-dodecylphenol, 2- (3,5-dimethyl-heptyl ) -phenol or 4- (3,5-dimethyl-heptyl) phenol.
  • Suitable monocarboxylic acids are benzoic acid. Alkylbenzoic acids and halobenzoic acids.
  • Preferred chain terminators are phenol, p-tert-butylphenol, 4- (l, 1,3,3-tetramethylbutyl) phenol and cumylphenol.
  • the amount of chain terminators is preferably between 0.5 and 10 mol%, based on the sum of the bisphenols used in each case.
  • polycarbonates suitable according to the invention can be branched in a known manner, preferably by incorporating trifunctional or more than trifunctional branching agents.
  • Suitable branching devices are e.g. those with three or more than three phenolic groups or those with three or more than three carboxylic acid groups.
  • Suitable branching agents are, for example, phloroglucin, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -hepten-2, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) - heptane, 1, 3,5-tri- (4-hydroxyphenyl) benzene, 1,1,1-tri- (4-hydroxyphenyl) ethane, tri- (4-hydroxyphenyl) phenylmethane, 2,2- Bis- [4,4-bis (4-hydroxyphenyl) cyclohexyl] propane, 2,4-bis (4-hydroxyphenyl-isopropyl) phenol, 2,6-bis (2-hydroxy-5'-mefhyl -benzyl) -4-methylphenol, 2- (4-hydroxyphenyl) -2- (2,4-dihydroxyphenyl) propane, hexa- (4- (4-hydroxyphenyl-isopropyl) phenyl) terephthalic acid
  • branching agents are 3,3-bis (3-methyl-4-hydroxyphenyl) -2-oxo-2,3-dihydroindole and 1,1,1-tris (4-hydroxyphenyl) ethane.
  • the amount of branching agents which may be used is preferably 0.05 mol% to 2 mol%, based on moles of bisphenols used.
  • the branching agents can be initially charged with the bisphenols and the chain terminators in the aqueous alkaline phase, or they can be added in solution in an organic solvent together with the carbonic acid derivatives.
  • the branching agents are preferably metered in together with the dihydroxyaromatics or bisphenols.
  • additives can be admixed with the polycarbonates according to the invention and / or applied to the surface of the molded body.
  • Typical additives are, for example: fillers, reinforcing materials, stabilizers (for example UV stabilizers, thermal stabilizers, gamma radiation stabilizers), antistatic agents, flow aids, mold release agents, fire retardants, dyes and pigments.
  • stabilizers for example UV stabilizers, thermal stabilizers, gamma radiation stabilizers
  • antistatic agents for example UV stabilizers, thermal stabilizers, gamma radiation stabilizers
  • flow aids for example UV stabilizers, thermal stabilizers, gamma radiation stabilizers
  • flow aids for example UV stabilizers, thermal stabilizers, gamma radiation stabilizers
  • mold release agents for example, fire retardants, dyes and pigments.
  • polymers can be mixed into the polycarbonates according to the invention, whereby so-called polymer blends are obtained.
  • blends can be produced from the polycarbonates and polyolefins according to the invention, in particular ABS polymers.
  • Dapro® U99 a solution of 40 g of sulfonic succinic acid bis (2-ethylhexyl ester) sodium salt in 43 g of 2-butoxyethanol, 4 g of ethanol, 3 g of water and 10 g of polyethylene glycol fatty acid ester (mixture based essentially on polyethylene glycol oleic acid ester, polyethylene glycol palmitic acid ester and polyethylene glycol stearic acid ester)).
  • Levasil® 300F is an anionic stabilized silica sol from Bayer AG with an average particle size of 7 to 8 nm or a specific surface area of
  • Levasil ® 300F has a solids content of 30% by mass and a pH of approx. 9.8. It contains a small amount of ⁇ 0.2% by weight of formaldehyde against microorganisms.
  • the preparation is carried out analogously to coating agent A. However, instead of the solution mentioned, 0.621 g of bis (2-ethylhexyl) sulfonosuccinate, sodium salt, 0.054 g of polyethylene glycol (number average molecular weight: 1,000) are added
  • the preparation is carried out analogously to coating agent C.
  • polyethylene glycol instead of the polyethylene glycol, 0.062 g of polyethylene glycol fatty acid ester (mixture based essentially on polyethylene glycol oleic acid ester, polyethylene glycol palmitic acid ester and polyethylene glycol stearic acid ester) is added.
  • Hollow chamber plates made from a branched aromatic polycarbonate (relative solution viscosity 1.315 measured on a solution of 0.5 g polycarbonate in 100 ml methylene chloride at room temperature), as used for greenhouse construction, were coated on one side with the coating agents A to D using the flooding method and then dried at 130 ° C for 0.5 h.
  • the layer thicknesses were approx. 0.3 ⁇ m (thickness measuring device ETA-SD-30, from ETA-Optik; interference method).
  • the coatings were without surface defects and showed no interference patterns.
  • the wetting with water was even.
  • the contact angle of the water was less than 1 °.
  • the steam test was carried out as a further test.
  • the hollow chamber slabs are exposed to a closed water vapor atmosphere at 100 ° C. It is observed when the water-spreading effect disappears and the first
  • the coated polycarbonate hollow tiles were attached at an angle of 60 ° with the coated side down to the ceiling of a model greenhouse, so that the water-spreading effect could be compared by observing the formation of droplets.
  • water was evaporated using a heating source, so that a temperature of 50 ° C. and a humidity of 100% was established.
  • the plates were left under these conditions for 6 hours and then heated in a dry heating cabinet at 40 ° C. for 4 hours. Then the procedure was repeated alternately in the model greenhouse and in the heating cabinet until the water-spreading effect disappeared (evident from the drop formation on the plate).
  • Granular branched bisphenol A polycarbonate (reactive solution viscosity 1.315 measured on a solution of 0.5 g polycarbonate in 100 ml methylene chloride at room temperature) were made into hollow chamber plates with a thickness of 6 mm and a specific weight of 1.3 kg / m 2 on a single-screw extruder extruded at 290 ° C.
  • the aqueous coating of the composition according to Example 1 was applied to the hollow comb plate with an Optiroller from Bürkle (roller application machine SAL), which had a rubberized, reversing application roller with a hardness of 50 Shore.
  • the roller speed was
  • Granular branched bisphenol A polycarbonate (reactive solution viscosity 1, 315 measured on a solution of 0.5 g of polycarbonate in 100 ml of methylene chloride at room temperature) were made into hollow chamber slabs with a thickness of 6 mm and a specific weight of 1, 3 kg / m 2 extruded at 290 ° C in a single-screw extruder.
  • the aqueous coating of the composition according to Example 1 was applied at 60 ° C. using a metering pump and a corrugated steel roller running along with it. The order quantity was regulated via a dosing pump. The pump application was made immediately before the
  • the roll thickness was 10 mm.
  • the coating was tempered for 4 minutes in a circulating air section at a temperature of up to 130 ° C.
  • the hollow chamber plate was then sawn into individual plates.
  • the coated plates have an improved brilliance compared to the original plates and have an excellent water spread.
  • the coating cannot be removed in the adhesive tape test (tape test). No change in water spread was found in the model greenhouse even after 80 cycles.
  • Constant of the coating agent means the percentage by weight of all substances that are not water in the coating agent.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)

Abstract

L'invention concerne des corps moulés plats munis d'un revêtement, à effet dispersif dans l'eau, à base de thermoplastiques. L'invention concerne en outre deux procédés permettant de les produire, ainsi que leur utilisation.
EP99929248A 1998-06-30 1999-06-17 Corps moules munis d'un revetement, a effet dispersif dans l'eau Withdrawn EP1097005A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19829081A DE19829081A1 (de) 1998-06-30 1998-06-30 Wasserspreitend beschichtete Formkörper
DE19829082A DE19829082A1 (de) 1998-06-30 1998-06-30 Wasserspreitend beschichtete Formkörper
DE19829082 1998-06-30
DE19829081 1998-06-30
PCT/EP1999/004181 WO2000000297A1 (fr) 1998-06-30 1999-06-17 Corps moules munis d'un revetement, a effet dispersif dans l'eau

Publications (1)

Publication Number Publication Date
EP1097005A1 true EP1097005A1 (fr) 2001-05-09

Family

ID=26047120

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Application Number Title Priority Date Filing Date
EP99929248A Withdrawn EP1097005A1 (fr) 1998-06-30 1999-06-17 Corps moules munis d'un revetement, a effet dispersif dans l'eau

Country Status (14)

Country Link
US (1) US6572970B1 (fr)
EP (1) EP1097005A1 (fr)
JP (1) JP2002519178A (fr)
KR (1) KR20010053308A (fr)
CN (1) CN1308564A (fr)
AR (1) AR016731A1 (fr)
AU (1) AU752070B2 (fr)
BR (1) BR9912503A (fr)
CA (1) CA2335969A1 (fr)
HK (1) HK1039084A1 (fr)
ID (1) ID26642A (fr)
IL (1) IL139990A0 (fr)
TW (1) TW523531B (fr)
WO (1) WO2000000297A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6263056B1 (en) * 1998-04-16 2001-07-17 Ameritech Corporation Calling-party-pays call processing for cellular and paging
DE10259238A1 (de) * 2002-12-17 2004-07-01 Röhm GmbH & Co. KG Wasserspreitende Kunststoffkörper und Verfahren zu dessen Herstellung
EP1928643B1 (fr) * 2005-08-19 2021-12-15 William Lee Johnson, Sr. Procédé de fabrication d'éléments composites ayant une résistance renforcée
KR102146406B1 (ko) * 2020-02-10 2020-08-20 박래상 압출제품의 제조방법

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NL171527C (nl) 1969-04-10 1983-04-18 Montedison Spa Broeikas, die is voorzien van transparante of opaalachtige foelies of platen van een vinylchloridepolymeer.
BE754144A (nl) * 1969-08-07 1971-02-01 Agfa Gevaert Nv Werkwijze om het beslaan van films te beletten
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DE2161645A1 (de) * 1971-12-11 1973-06-14 Roehm Gmbh Beschlagverhinderndes beschichtungsmittel
JPS516193A (ja) * 1974-07-08 1976-01-19 Mitsui Toatsu Chemicals Bodonzai
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DE3400079A1 (de) 1984-01-03 1985-07-11 Röhm GmbH, 6100 Darmstadt Wasserspreitendes kunststoffmaterial, verfahren zu seiner herstellung u. verwendung als verglasungs- und bedachungsmaterial
EP0228671A1 (fr) * 1985-12-23 1987-07-15 General Electric Company Procédé pour la fabrication d'un substrat revêtu, à caractéristiques de surface spécifiques
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See references of WO0000297A1 *

Also Published As

Publication number Publication date
TW523531B (en) 2003-03-11
BR9912503A (pt) 2001-05-02
ID26642A (id) 2001-01-25
JP2002519178A (ja) 2002-07-02
AR016731A1 (es) 2001-07-25
AU752070B2 (en) 2002-09-05
CA2335969A1 (fr) 2000-01-06
KR20010053308A (ko) 2001-06-25
HK1039084A1 (zh) 2002-04-12
IL139990A0 (en) 2002-02-10
CN1308564A (zh) 2001-08-15
US6572970B1 (en) 2003-06-03
AU4612099A (en) 2000-01-17
WO2000000297A1 (fr) 2000-01-06

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