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DK2850126T3 - Flerlagsfilm med forbedrede modulegenskaber - Google Patents

Flerlagsfilm med forbedrede modulegenskaber Download PDF

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Publication number
DK2850126T3
DK2850126T3 DK13721759.2T DK13721759T DK2850126T3 DK 2850126 T3 DK2850126 T3 DK 2850126T3 DK 13721759 T DK13721759 T DK 13721759T DK 2850126 T3 DK2850126 T3 DK 2850126T3
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DK
Denmark
Prior art keywords
mole
plastic film
film according
residues
multilayer plastic
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Application number
DK13721759.2T
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English (en)
Inventor
Joerg Nickel
Craig Pehlert
Heinz Pudleiner
Klaus Meyer
JüRGEN WINKLER
WOLFGANG BRäUER
Chunhua Li
Yan Chen
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Covestro Deutschland Ag
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Publication of DK2850126T3 publication Critical patent/DK2850126T3/da

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    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00Dental prostheses; Making same
    • A61C13/0003Making bridge-work, inlays, implants or the like
    • A61C13/0022Blanks or green, unfinished dental restoration parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00Filling or capping teeth
    • A61C5/007Dental splints; teeth or jaw immobilisation devices; stabilizing retainers bonded to teeth after orthodontic treatments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/0017Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/03Extrusion 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
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    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/30Extrusion nozzles or dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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  • Health & Medical Sciences (AREA)
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  • Polyesters Or Polycarbonates (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Dental Prosthetics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Preparations (AREA)

Claims (17)

1. Flerlagsplastfilm, kendetegnet ved, at - den har et kernelag A, som indeholder mindst ét polycarbonat eller copolycarbonat og/eller en polyester eller copolyester med en glasovergangs-temperatur Tg på fra 80 °C til 200 °C, hvor glasovergangstemperaturen Tg er bestemt ved hjælp af differentiel scanningskalorimetri (DSC) i henhold til standarden DIN EN 61006 ved en opvarmningshastighed på 20 K/min med Tg defineret som midtpunktstemperaturen (tangentmetoden) , og hvor kernelaget A indeholder mindst én copolyester, der udviser rester fra (a) en dicarboxylsyrebestanddel, som omfatter i) fra 70 mol-% til 100 mol-% terephthalsyrerester, ii) fra 0 mol-% til 30 mol-% aromatiske dicarboxylsyrerester med op til 20 carbonatomer og iii) fra 0 mol-% til 10 mol-% alifatiske dicarboxylsyrerester med op til 16 carbonatomer, og (b) en diolbestanddel, som omfatter i) fra 5 mol-% til 50 mol-% 2,2,4,4-tetramethyl-l,3-cyclobutandiolrester og ii) fra 50 mol-% til 95 mol-% 1,4-cyclohexandimethanolrester, hvor summen af mol-% af resterne i) - iii) fra dicarboxylsyrebestanddelen udgør 100 mol-%, og summen af mol-% af resterne i) og ii) fra diolbestanddelen udgør 100 mol-%, og dette kernelag A befinder sig mellem to udvendige lag B, der indeholder mindst én termoplastisk polyurethan, som udviser en hårdhed på fra 45 Shore D til 85 Shore D, hvor Shore-hårdheden er bestemt i henhold til DIN EN ISO 868.
2. Flerlagsplastfilm ifølge krav 1, kendetegnet ved, at den har et kernelag A, som indeholder mindst én polyester eller copolyester med en iboende viskositet på fra 0,50 dl/g til 1,20 dl/g, hvor den iboende viskositet er bestemt i 60/40 (vægt/vægt) phenol/tetrachlorethan ved en koncentration på 0,5 g/100 ml ved 25 °C og en glasovergangstemperatur Tg på fra 80 °C til 200 °C, hvor glasovergangs-temperaturen Tg er bestemt ved hjælp af differentiel scanningskalorimetri (DSC) i henhold til standarden DIN ΕΝ 61006 ved en opvarmningshastighed på 20 K/min med Tg defineret som midtpunkts-temperaturen (tangentmetoden).
3. Flerlagsplastfilm ifølge krav 1, kendetegnet ved, at den har et kernelag A, som indeholder mindst én copolyester med en iboende viskositet på fra 0,50 dl/g til 1,20 dl/g, hvor den iboende viskositet er bestemt i 60/40 (vægt/vægt) phenol/tetrachlorethan ved en koncentration på 0,5 g/100 ml ved 25 °C og en glasovergangstemperatur Tg på fra 80 °C til 150°C, hvor glasovergangs-temperaturen Tg er bestemt ved hjælp af differentiel scanningskalorimetri (DSC) i henhold til standarden DIN EN 61006 ved en opvarmningshastighed på 20 K/min med Tg defineret som midtpunktstemperaturen (tangentmetoden).
4. Flerlagsplastfilm ifølge mindst ét af kravene 1-3, kendetegnet ved, at kernelaget A befinder sig mellem to udvendige lag B, der indeholder mindst én termoplastisk polyurethan, hvilken termoplastisk polyurethan udviser en hårdhed på fra 45 Shore D til 85 Shore D, hvor Shore-hårdheden er bestemt i henhold til DIN EN ISO 868, og kan opnås ud fra a) en eller flere lineære polyetherdioler med gennemsnitlige molekylvægte på fra 500 g/mol til 10.000 g/mol, fortrinsvis 500 g/mol til 6000 g/mol, og i hvert tilfælde med gennemsnitligt mindst 1,8 og højst 3,0, fortrinsvis 1,8 til 2,2, Tserevitinov-aktive hydrogenatomer, b) et eller flere organiske diisocyanater, c) en eller flere diol-kædeforlængere med molekylvægte på fra 60 g/mol til 500 g/mol og med gennemsnitligt 1,8 til 3,0 Tserevitinov-aktive hydrogenatomer, eventuelt i nærværelse af d) en eller flere katalysatorer, eventuelt med tilsætning af e) hjælpestoffer og additiver, hvor det molære forhold mellem NCO-grupperne i b) og grupperne i a) og c) , der er reaktive over for isocyanat, udgør fra 0,85:1 til 1,2:1, fortrinsvis fra 0,9:1 til 1,1:1.
5. Flerlagsplastfilm ifølge mindst ét af kravene 1-4, kendetegnet ved, at den termoplastiske polyurethan udviser en hårdhed på fra 50 Shore D til 80 Shore D, hvor Shore-hårdheden er bestemt i henhold til DIN EN ISO 868.
6. Flerlagsplastfilm ifølge krav 4 eller 5, kendetegnet ved, at polyetherdiolerne a) , som er anvendt til fremstilling af den termoplastiske polyurethan, er valgt blandt en eller flere polyetherdioler fra gruppen baseret på 1,4-butandiolenheder og/eller 1,3-propylenglycolenheder.
7. Flerlagsplastfilm ifølge mindst ét af kravene 4-6, kendetegnet ved, at det organiske diisocyanat b), som er anvendt til fremstilling af den termoplastiske polyurethan, er valgt blandt et eller flere isocyanater fra gruppen, der indeholder 4,4'-diphenylmethandiisocyanat, isophorondiisocyanat, dicyclohexylmethan-4,4'-diisocyanat eller 1,6-hexamethylendiisocyanat.
8. Flerlagsplastfilm ifølge mindst ét af kravene 4-7, kendetegnet ved, at diol-kædeforlængeren c) , som er anvendt til fremstilling af den termoplastiske polyurethan, er valgt blandt en eller flere kædeforlængere fra gruppen, der indeholder 1,4-butandiol, 1,3-propandiol, 1,2-propandiol, 1,2-ethylenglycol, 1,6-hexandiol, l,4-di(p-hydroxyethyl)hydroquinon eller 1,4-di(β-hydroxyethyl)bisphenol A.
9. Flerlagsplastfilm ifølge mindst ét af kravene 4-8, kendetegnet ved, at den termoplastiske polyurethan blev fremstillet i præpolymerprocessen.
10. Flerlagsplastfilm ifølge mindst ét af kravene 1-9, kendetegnet ved, at copolyesterens diolbestanddel omfatter fra 10 mol-% til 35 mol-% 2,2,4,4-tetramethyl-l,3-cyclobutandiolrester og fra 65 mol-% til 90 mol-% 1,4- cyclohexandimethanolrester, fortrinsvis fra 15 mol-% til 35 mol-% 2,2,4,4-tetramethyl-l,3-cyclobutandiolrester og fra 65 mol-% til 85 mol-% 1,4-cyclohexandimethanolrester, særlig foretrukkent fra 15 mol-% til 30 mol-% 2,2,4,4-tetramethyl- I, 3-cyclobutandiolrester og fra 70 mol-% til 85 mol-% 1,4-cyclohexandimethanolrester, idet summen af mol-% af disse to bestanddele af diolbestanddelen udgør 100 mol-%. II. Flerlagsplastfilm ifølge mindst ét af kravene 1-10, kendetegnet ved, at resterne fra polyesterens dicarboxylsyrebestanddel indbefatter fra 95 mol-% til 100 mol-% terephthalsyrerester.
12. Flerlagsplastfilm ifølge mindst ét af kravene 1-11, kendetegnet ved, at filmen er blevet coekstruderet.
13. Flerlagsplastfilm ifølge mindst ét af kravene 1-12, kendetegnet ved, at den har en samlet tykkelse på fra 300 pm til 2000 pm, fortrinsvis fra 400 pm til 1500 pm, særlig foretrukkent fra 500 pm til 1200 pm.
14. Flerlagsplastfilm ifølge mindst ét af kravene 1-13, kendetegnet ved, at kernelaget A har en lagtykkelse på fra 250 pm til 1600 pm, fortrinsvis fra 350 pm til 1400 pm, særlig foretrukkent fra 400 pm til 1000 pm.
15. Flerlagsplastfilm ifølge mindst ét af kravene 1-14, kendetegnet ved, at de udvendige lag B hver har en lagtykkelse på fra 25 pm til 500 pm, fortrinsvis fra 30 pm til 300 pm, særlig foretrukkent fra 50 pm til 200 pm.
16. Flerlagsplastfilm ifølge mindst ét af kravene 2-15, kendetegnet ved, at poly- eller copolyesteren udviser en iboende viskositet på fra 0,50 dl/g til 0,80 dl/g, hvor den iboende viskositet er bestemt i 60/40 (vægt/vægt) phenol/tetrachlorethan ved en koncentration på 0,5 g/100 ml ved 25 °C.
17. Flerlagsplastfilm ifølge mindst ét af kravene 1-16, kendetegnet ved, at poly- eller copolyesteren udviser en glasovergangstemperatur Tg på fra 85 °C til 130 °C, fortrinsvis fra 90 °C til 120 °C, hvor glasovergangstemperaturen Tg er bestemt ved hjælp af differentiel scanningskalorimetri (DSC) i henhold til standarden DIN EN 61006 ved en opvarmningshastighed på 20 K/min med Tg defineret som midtpunktstemperaturen (tangentmetoden).
18. Tredimensionelt formet artikel, som er opnået ved tredimensionel formning af flerlagsplastfilmen ifølge mindst ét af kravene 1-17.
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