EP1257597A1 - Zusammensetzung enthaltend polycarbonat und pigmente - Google Patents

Zusammensetzung enthaltend polycarbonat und pigmente

Info

Publication number
EP1257597A1
EP1257597A1 EP01907487A EP01907487A EP1257597A1 EP 1257597 A1 EP1257597 A1 EP 1257597A1 EP 01907487 A EP01907487 A EP 01907487A EP 01907487 A EP01907487 A EP 01907487A EP 1257597 A1 EP1257597 A1 EP 1257597A1
Authority
EP
European Patent Office
Prior art keywords
layer
thermoplastic
composition according
composition
polycarbonate
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Withdrawn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
EP01907487A
Other languages
German (de)
English (en)
French (fr)
Inventor
Rüdiger Gorny
Siegfried Anders
Wolfgang Nising
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.)
Covestro Deutschland 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
Application filed by Bayer AG filed Critical Bayer AG
Publication of EP1257597A1 publication Critical patent/EP1257597A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/02—Ingredients treated with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0041—Optical brightening agents, organic pigments
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
    • C09C2200/302—Thickness of a layer with high refractive material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
    • C09C2200/303—Thickness of a layer with low refractive material

Definitions

  • the present invention relates to compositions comprising a thermoplastic and a multilayer pigment, and to a process for
  • Polycarbonate sheets are known, for example, from EP-A 0 110 221 and are provided for a large number of applications.
  • the production is carried out by extrusion of polycarbonate and optionally coextrusion with molding compositions which contain an increased proportion of UV absorbers.
  • EP-A 0 320 632 teaches that the plates are to be equipped with a coextrusion layer which contains low-volatility UV absorbers in increased concentrations.
  • EP-A 0 678 376 teaches that for plates made of polyesters, in particular for plates made of copolyesters of aromatic dicarboxylic acids and mixtures of two aliphatic diols such as e.g. Ethylene glycol and cyclohexanedimethanol (PETG), weather protection is achieved by coextrusion with top layers, the UV absorbers e.g. based on benzotriazoles in increased concentrations.
  • PETG Ethylene glycol and cyclohexanedimethanol
  • German patent DE-C 25 44 245 a board made of polymethyl methacrylate with a content of light-reflecting particles aligned parallel to the surface is known. Their layer thickness is dimensioned such that they largely let visible light through and largely reflect infrared radiation.
  • the known body contains the light-reflecting particles in the base material made of polymethyl methacrylate. They are introduced into the liquid methyl methacrylate monomer, this in a polymer formed from glass plates arranged in parallel. sationssch filled and partially polymerized. Up to this point the particles have sunk onto the lower glass plate. By parallel displacement of this plate, the particles are aligned parallel to the surface and held in this position as the polymerization continues. This treatment stage makes the manufacturing process complex and expensive.
  • EP-A 340 313 describes solar radiation-resistant coatings for ships, tanks, buildings and the like in order to reduce their heating in the sun.
  • the coatings contain a binder, a heat-reflecting pigment and, if necessary, any color pigments.
  • polyethylene sheets for greenhouses are provided with a coating by brushing or spraying, which contains light-reflecting pigments in a matrix of a paint binder. Since the pigment particles are not oriented by the application process, they only have a shading effect and result in unsatisfactory transmission. As a result of the low adhesion of conventional paint binders to polyethylene, the coating can easily be washed off the coated web with a water jet.
  • EP-A 0 548 822 describes PMMA sheets which are special in the coextrusion layer
  • EP-A 0 774 551 describes various types of coextruded polycarbonate sheets which can contain several coextrusion layers. Each individual coextrusion layer gives the plate different functions. For outdoor applications, it is important that the pigment-containing layer is covered with an overlying UV protective layer, since the weather stability of the pigments in polycarbonate is not sufficient. The UV protection layer on top protects the plate from severe yellowing.
  • the multilayer coextrusion is cumbersome and expensive, since at least two different coextrusion molding compounds have to be produced and at least 2 coextruders have to be connected to the main extruder.
  • the present invention is therefore based on the object, weather-stable
  • compositions that allow the production of products with pearlescent surfaces.
  • the present invention is based on the object of providing products made from these compositions.
  • a multilayer pigment consisting of a carrier material in the core, a first layer of titanium dioxide lying on top, a second layer of silicon dioxide lying on top and a third layer of titanium dioxide lying on top.
  • the object of the invention is achieved by products containing the compositions of the invention.
  • the multilayer pigments according to the invention are commercially available, for example under the trade name Iriodin® AC 870 from Merck
  • compositions according to the invention preferably contain 1 to 40% by weight of the pigments according to the invention.
  • the carrier material of the pigments according to the invention is preferably selected from the group consisting of mica, layered silicates, glass platelets, PbCO ⁇ x Pb (OH) 2, BiOCl (bismuth oxychloride) and platelet-shaped silicon dioxide.
  • the carrier material is transparent.
  • the multilayer pigment according to the invention is preferably lamellar. Its particle size is preferably such that the length of the leaflets is preferably from 1 to 10 ⁇ m.
  • the multilayer pigment according to the invention can also contain more than 3 coating layers over the carrier material. There can also be others between the above-mentioned coating layers of titanium dioxide, silicon dioxide and titanium dioxide.
  • Coating layers lie.
  • the layers of the multilayer pigment according to the invention preferably have the following thicknesses:
  • the first layer of titanium dioxide which lies over the support material, preferably has a thickness of 100 to 180 nm, in particular 110 to 120 nm.
  • the second layer of silicon dioxide above it preferably has a thickness of 100 to 150 nm, in particular 110 to 140 nm.
  • the third overlying layer of titanium dioxide preferably has a thickness of 110 to 160 nm, in particular 120 to 150 nm.
  • the multilayer pigment according to the invention can also be constructed such that instead of the layers made of titanium dioxide, layers made of other metal oxides with high
  • Refractive index can be used.
  • these can be, for example: zirconium oxide, iron (III) oxide, iron (II, III) oxide, chromium trioxide or zinc oxide or iron titanium. nates, iron oxide hydrates or titanium suboxides or mixtures or mixed phases of these compounds with one another or with other metal oxides.
  • the multilayer pigment according to the invention can also be constructed such that a layer made of another metal oxide with a low refractive index is used instead of the layer made of silicon dioxide.
  • a layer made of another metal oxide with a low refractive index is used instead of the layer made of silicon dioxide.
  • silicon dioxide this is, for example, aluminum oxide, aluminum oxide hydrate, boron oxide or a mixture thereof.
  • the low refractive index oxide layer may also contain alkali oxides and alkaline earth oxides as components.
  • thermoplastics according to the invention are those selected from the group consisting of polycarbonate, polymethyl methacrylate, polystyrene, polysulfone, styrene-acrylonitrile copolymers, polyester, polyether sulfone, polyethylene, polypropylene and mixtures of the polymers mentioned.
  • Polycarbonate is particularly preferred.
  • a particularly preferred polycarbonate is bisphenol A homopolycarbonate.
  • Another particularly preferred polycarbonate is the copolycarbonate based on bisphenol A and l, l-bis- (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane.
  • thermoplastic materials are polyacrylates or copolyacrylates and polymethacrylates or copolymethacrylates, for example poly methacrylate or copolymethyl methacrylate.
  • Further preferred thermoplastics are copolymers with styrene, such as transparent polystyrene acrylonitrile (SAN).
  • SAN transparent polystyrene acrylonitrile
  • thermoplastic materials are transparent cycloolefins and polycondensates or copolycondensates of terephthalic acid such as e.g. Polyethylene terephthalate (PET) or copolyethylene terephthalate (CoPET) or PETG.
  • PET Polyethylene terephthalate
  • CoPET copolyethylene terephthalate
  • Thermoplastic, aromatic polycarbonates for the compositions according to the invention are those which have hitherto been used for this purpose. These are homopolycarbonates, copolycarbonates and thermoplastic polyester carbonates. They have weight average molecular weights M w of preferably 18,000 g / mol to 40,000 g / mol, preferably from 20,000 to 36,000 and in particular from 22,000 to 35,000, determined by measuring the rel. Solution viscosity in dichloromethane or in mixtures of equal amounts by weight of phenol / o-dichlorobenzene calibrated by light scattering.
  • Compounds which are preferably to be used as starting compounds are bisphenols of the general formula HO-Z-OH, in which Z is a divalent organic radical having 6 to 30 carbon atoms and containing one or more aromatic groups.
  • Z is a divalent organic radical having 6 to 30 carbon atoms and containing one or more aromatic groups.
  • Examples of such compounds are bisphenols which belong to the group of dihydroxydiphenyls, bis (hydroxyphenyl) alkanes, indane bisphenols, bis (hydroxyphenyl) ethers, bis (hydroxyphenyl) sulfones, bis (hydroxyphenyl) ketones and ⁇ , ⁇ '-bis (hydroxyphe- nyl) -diisopropylbenzenes belong.
  • bisphenols which belong to the abovementioned connecting groups are bisphenol-A, tetraalkylbisphenol-A, 4,4- (meta-phenylenediisopropyl) diphenol (bisphenol M), 4,4- (para-phenylenediisopropyl) diphenol, l, l-bis- (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (BP-TMC) and optionally their mixtures.
  • BP-TMC 4,4- (meta-phenylenediisopropyl) diphenol
  • BP-TMC 4,4- (para-phenylenediisopropyl) diphenol
  • BP-TMC 4,4- (para-phenylenediisopropyl) diphenol
  • BP-TMC 4,4- (para-phenylenediisopropyl) diphenol
  • BP-TMC 4,4- (para-phenylenediisopropyl) diphenol
  • l
  • Polyester carbonates are obtained by reacting the bisphenols already mentioned, at least one aromatic dicarboxylic acid and optionally carbonic acid equivalents.
  • Suitable aromatic dicarboxylic acids are, for example, phthalic acid, terephthalic acid, isophthalic acid, 3,3'- or 4,4'-diphenyldicarboxylic acid and benzophenone dicarboxylic acids.
  • Some, up to 80 mol%, preferably from 20 to 50 mol%, of the carbonate groups in the polycarbonates can be replaced by aromatic dicarboxylic acid ester groups.
  • Inert organic solvents used in the interfacial process are, for example, dichloromethane, the various dichloroethanes and chloropropane compounds, carbon tetrachloride, trichloromethane, chlorobenzene and chlorotoluene; chlorobenzene or dichloromethane or mixtures of dichloromethane and chlorobenzene are preferably used.
  • phase interface reaction can be accelerated by catalysts such as tertiary amines, in particular N-alkylpiperidines or onium salts.
  • catalysts such as tertiary amines, in particular N-alkylpiperidines or onium salts.
  • Tributylamine, triethylamine and N-ethylpiperidine are preferably used.
  • the catalysts mentioned in DE 42 38 123 are used.
  • the polycarbonates can be branched deliberately and in a controlled manner by using small amounts of branching agents.
  • branching agents are: 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'-methylbenzyl) -4-methylphenol; 2- (4-hydroxyphenyl) -2- (2,4-dihydroxyphenyl) propane; Hexa- (4- (4-hydroxyphenyl-
  • the 0.05 to 2 mol%, if appropriate, of branching agents or mixtures of the branching agents, based on diphenols used, can be used together with the diphenols, but also in a later stage of
  • phenols such as phenol, alkylphenols such as creole and 4-tert-butylphenol, chlorophenol, bromophenol, cumylphenol or mixtures thereof are preferably used in amounts of 1-20 mol%, preferably 2-10 mol% per mol of bisphenol. Phenol, 4-tert-butylphenol and cumylphenol are preferred.
  • Chain terminators and branching agents can be added to the syntheses separately or together with the bisphenol.
  • the compositions according to the invention contain UV absorbers.
  • the UV absorbers are preferably contained in the composition according to the invention in an amount of 0.1 to 10% by weight, particularly preferably 3 to 8% by weight.
  • the UV absorber according to the invention is preferably a UN absorber selected from the group consisting of bis [2-hydroxy-5-tert-octyl-3- (benzotriazol-2-yl) phenyl] methane, 2- ( 4,6-diphenyl-s-triazin-2-yl) -5-hexyloxyphenol and bis [2-hydroxy-5-tert-octyl-3- (benzotriazol-2-yl) phenyl] methane and 2- (4, 6- diphenyl-s-triazin-2-yl) -5-hexyloxyphenol.
  • a UN absorber selected from the group consisting of bis [2-hydroxy-5-tert-octyl-3- (benzotriazol-2-yl) phenyl] methane, 2- ( 4,6-diphenyl-s-triazin-2-yl) -5-hexyloxyphenol and bis [2-hydroxy-5-tert-octyl-3- (benzotri
  • UV absorbers are incorporated into the compositions according to the invention by customary methods, for example by mixing solutions of the
  • UV absorber with solutions of the plastics in suitable organic solvents such as CH 2 C1 2 , haloalkanes, halogen aromatics, chlorobenzene and xylenes.
  • suitable organic solvents such as CH 2 C1 2 , haloalkanes, halogen aromatics, chlorobenzene and xylenes.
  • the substance mixtures are then homogenized in a known manner, for example by extrusion; the solution mixtures are removed in a known manner by evaporation of the solvent and subsequent extrusion.
  • Suitable UV absorbers for the coextrusion compositions to be used, if any, are those compounds which, owing to their absorption capacity below 400 nm, are able to effectively protect polycarbonate from UV light and have a molecular weight of more than 370, preferably 500 and more ,
  • Suitable UV absorbers are in particular the compounds of the formula (II) described in WO 99/05205
  • R 1 and R 2 are the same or different and are H, halogen, -CC-alkyl, C 5 -C 10 "cycloalkyl, C 7 -C 13 aralkyl, C 6 -C 4 -aryl, -OR 5 or - ( CO) -OR 5 mean
  • R H or C, -C 4 alkyl
  • R 3 and R 4 are likewise the same or different and denote H, C 4 -C 4 alkyl, C 5 -C 6 cycloalkyl, benzyl or C 6 -C aryl,
  • n 1, 2 or 3
  • n 1, 2, 3 or 4
  • R, R, m and n have the meaning given for formula (II), and
  • p is also an integer from 0 to 3
  • q is an integer from 1 to 10
  • Y equals -CH 2 -CH 2 -, - (CH 2 ) 3 -, - (CH 2 ) 4 -, - (CH 2 ) 5 -, - (CH 2 ) 6 -, or
  • R 3 and R 4 have the meaning given for formula (II).
  • UV absorbers are those which are substituted triazines, such as 2,4-bis (2,4-dimethylphenyl) -6- (2-hydroxy-4-n-octyloxyphenyl) -l, 3,5-triazine ( CYASORB® UV-1 164) or 2- (4,6-diphenyl-l, 3,5-triazin-2-yl) -5- (hexyl) oxy-phenol (Tinuvin® 1577).
  • a particularly preferred UV absorber is 2,2-methylenebis (4- (1,1,3,3-tetramethylbutyl) -6- (2H-benzotriazol-2-yl) phenol), which is commercially available under the name Tinuvin® 360 or Adeka Stab ® LA 31 is sold.
  • the UV absorbers mentioned in EP 0500496 AI are also suitable.
  • the one in WO 96/15102, UV absorber Uvinul 3030 from BASF AG obtained in Example 1 can also be used.
  • Suitable stabilizers for the polycarbonates for the compositions according to the invention are, for example, phosphines, phosphites or epoxides or Si-containing stabilizers and further compounds described in EP-A 0 500 496 and US Pat. No. 3,673,146.
  • Examples include triphenylphosphines, diphenylalkylphosphites, phenyldialkylphosphites, tris (nonylphenyl) phosphite, tetrakis (2,4-di-tert-butylphenyl) -4,4'-biphenylene diphosponite and triaryl phosphite.
  • Triphenylphosphine and tris (2,4-di-tert-butylphenyl) phosphite are particularly preferred.
  • compositions according to the invention can be used for the coextrusion of sheets. These sheets can be provided with coextrusion layers on one or both sides.
  • the plates can in particular be solid plates, multi-wall sheets, corrugated solid plates or corrugated multi-wall sheets.
  • antistatic agents which can be contained in the compositions according to the invention are cationic compounds, for example quaternary ammonium, phosphonium or sulfonium salts, anionic compounds, for example alkyl sulfonates, alkyl sulfates, alkyl phosphates, carboxylates in the form of alkali metal or alkaline earth metal salts, nonionic compounds, for example Polyethylene glycol esters, polyethylene glycol ethers, fatty acid esters, ethoxylated fatty amines.
  • Preferred antistatic agents are nonionic compounds.
  • Preferred fillers which can be contained in the compositions according to the invention are glass fibers, mica, silicates, quartz, talc, titanium dioxide or wollastonite.
  • Preferred reinforcing materials are glass or carbon fibers. All of the starting materials and solvents used for the synthesis of the compositions according to the invention can be contaminated with corresponding impurities from their production and storage, the aim being to work with starting materials which are as clean as possible.
  • the individual constituents can be mixed in a known manner both successively and simultaneously, both at room temperature and at elevated temperature.
  • the additives are incorporated into the compositions according to the invention in a known manner, for example by mixing polymer granules with the additive (s) and subsequent extrusion or by mixing the solutions of polycarbonate with solutions of the additives and subsequent evaporation of the solvents in a known manner.
  • the proportion of additives in the composition can be varied within wide limits and depends on the desired ones
  • the total proportion of additives in the composition is approximately up to 40% by weight, preferably 4 to 30% by weight, based on the weight of the composition.
  • compositions thus obtained can be prepared by the usual methods, e.g. Hot pressing, spinning, extruding or injection molding, into molded articles (products), such as Toy parts, but also fibers, foils, tapes, plates, multi-wall sheets, vessels, pipes and other profiles.
  • products such as Toy parts, but also fibers, foils, tapes, plates, multi-wall sheets, vessels, pipes and other profiles.
  • the compositions can also be made into cast films.
  • the invention therefore further relates to the use of the compositions according to the invention for
  • the products according to the invention containing the compositions according to the invention are preferably sheets, in particular solid sheets or double-wall sheets or triple-sheet sheets or corrugated sheets or other Stegpro files.
  • the plates according to the invention also include, in particular, those which have an additional cover layer with the composition according to the invention with an increased UV absorber content on one or both sides.
  • compositions according to the invention allow the production of products with pearlescent surfaces such as decorative slats for wall cladding, partition walls, ceiling cladding, false ceilings, glazing with subdued light, elements of modern room design, visually appealing facade cladding, layers for the replacement of paints and for the
  • Subsequent processing of the products according to the invention such as Deep drawing or surface processing such as Finishing with scratch-resistant lacquers, water-spreading layers and the like are possible and the products produced by these processes are also the subject of the patent.
  • Products preferred according to the invention are furthermore those which consist of a core and a coating layer, the coating layer being the composition according to the invention.
  • the coating layer can be applied to the core, for example, by coextrusion.
  • the core can be a plate, for example.
  • These preferred products can in particular be decorative slabs for wall cladding or partition walls or ceiling cladding or false ceilings or glazing with subdued light or layers for the replacement of paint coatings or for thermal insulation.
  • Products preferred according to the invention are also products in which a core is laminated with at least one film which consists of the composition according to the invention.
  • These products can in particular be decorative panels for wall cladding or partition walls or ceiling cladding or false ceilings or glazing with subdued light or layers for the replacement of paint coats or for thermal insulation.
  • the invention is further illustrated by the following example.
  • the thickness of the coextrusion layer was in each case approximately 50 ⁇ m.
  • the facility consisted of
  • a co-extruder for applying the top layer with a screw of length 25D and a diameter of 30 mm
  • the polycarbonate granulate of the base material was fed to the hopper of the main extruder, the UV coextrusion material to that of the coextruder.
  • the respective material was melted and conveyed in the respective plasticizing system cylinder / screw. Both material melts were brought together in the coex adapter and formed one after leaving the nozzle and cooling in the calibrator
  • Transmission (based on the standards ASTM E 308 / ASTM D 1003)
  • Device Pye-Unicam (measurement geometry: 0 ° / diffuse, calculated according to illuminant C)
  • the pigments according to the invention show a significantly improved color stability in artificial weathering than the conventional pigments.
  • Pigments based on a carrier material that is only coated with titanium dioxide do not show sufficient color constancy in weathering, as shown in Example 1.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
EP01907487A 2000-02-15 2001-02-02 Zusammensetzung enthaltend polycarbonat und pigmente Withdrawn EP1257597A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10006651A DE10006651A1 (de) 2000-02-15 2000-02-15 Zusammensetzung enthaltend Polycarbonat und Pigmente
DE10006651 2000-02-15
PCT/EP2001/001119 WO2001060902A1 (de) 2000-02-15 2001-02-02 Zusammensetzung enthaltend polycarbonat und pigmente

Publications (1)

Publication Number Publication Date
EP1257597A1 true EP1257597A1 (de) 2002-11-20

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EP01907487A Withdrawn EP1257597A1 (de) 2000-02-15 2001-02-02 Zusammensetzung enthaltend polycarbonat und pigmente

Country Status (14)

Country Link
US (2) US20030032755A1 (zh)
EP (1) EP1257597A1 (zh)
JP (1) JP2003525319A (zh)
KR (1) KR100772803B1 (zh)
CN (1) CN1237105C (zh)
AR (1) AR027324A1 (zh)
AU (1) AU780502B2 (zh)
BR (1) BR0108350A (zh)
CA (1) CA2399953C (zh)
DE (1) DE10006651A1 (zh)
IL (2) IL151186A0 (zh)
MX (1) MXPA02007876A (zh)
TW (1) TW574290B (zh)
WO (1) WO2001060902A1 (zh)

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DE10116687A1 (de) * 2001-04-03 2002-10-17 Gerhard Israel Aus thermoplastischem Kunststoff bestehende witterungsbeständige Folie
EP2428175B1 (en) 2001-09-24 2013-05-29 Applied Medical Resources Corporation Bladeless Obturator
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IL151186A0 (en) 2003-04-10
US20060293414A1 (en) 2006-12-28
CA2399953C (en) 2010-05-11
AR027324A1 (es) 2003-03-26
MXPA02007876A (es) 2003-02-10
CN1237105C (zh) 2006-01-18
KR20020081329A (ko) 2002-10-26
AU780502B2 (en) 2005-03-24
US20030032755A1 (en) 2003-02-13
BR0108350A (pt) 2003-03-11
TW574290B (en) 2004-02-01
CN1416451A (zh) 2003-05-07
CA2399953A1 (en) 2001-08-23
AU3544501A (en) 2001-08-27
IL151186A (en) 2008-07-08

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