EP2356165A1 - Pu-klebstoffen für sterilisierbare verbundfolien - Google Patents
Pu-klebstoffen für sterilisierbare verbundfolienInfo
- Publication number
- EP2356165A1 EP2356165A1 EP09752802A EP09752802A EP2356165A1 EP 2356165 A1 EP2356165 A1 EP 2356165A1 EP 09752802 A EP09752802 A EP 09752802A EP 09752802 A EP09752802 A EP 09752802A EP 2356165 A1 EP2356165 A1 EP 2356165A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- adhesive
- use according
- molecular weight
- polyols
- 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- Withdrawn
Links
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 58
- 239000000853 adhesive Substances 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 229920005906 polyester polyol Polymers 0.000 claims abstract description 23
- 150000001298 alcohols Chemical class 0.000 claims abstract description 15
- 229920000570 polyether Polymers 0.000 claims abstract description 11
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 7
- 150000001991 dicarboxylic acids Chemical class 0.000 claims abstract description 7
- 229920001281 polyalkylene Polymers 0.000 claims abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 5
- 239000000178 monomer Substances 0.000 claims abstract description 5
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 4
- 229920005862 polyol Polymers 0.000 claims description 22
- 150000003077 polyols Chemical class 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 15
- 238000004806 packaging method and process Methods 0.000 claims description 10
- 150000004982 aromatic amines Chemical class 0.000 claims description 8
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- -1 C20 dicarboxylic acids Chemical class 0.000 abstract description 23
- 125000005442 diisocyanate group Chemical group 0.000 abstract description 14
- 150000002009 diols Chemical class 0.000 abstract description 13
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- 229920001730 Moisture cure polyurethane Polymers 0.000 abstract 2
- 239000010408 film Substances 0.000 description 32
- 239000000203 mixture Substances 0.000 description 21
- 239000004814 polyurethane Substances 0.000 description 19
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 18
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 15
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000012948 isocyanate Substances 0.000 description 10
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 10
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 10
- 230000001954 sterilising effect Effects 0.000 description 9
- 238000004659 sterilization and disinfection Methods 0.000 description 9
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 8
- 230000001617 migratory effect Effects 0.000 description 8
- 125000004432 carbon atom Chemical group C* 0.000 description 7
- 239000012939 laminating adhesive Substances 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 6
- 150000002513 isocyanates Chemical class 0.000 description 6
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 150000003142 primary aromatic amines Chemical class 0.000 description 6
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 5
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 239000000539 dimer Substances 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 5
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000001361 adipic acid Substances 0.000 description 4
- 235000011037 adipic acid Nutrition 0.000 description 4
- 150000001412 amines Chemical group 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 4
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 4
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 4
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 4
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 125000002947 alkylene group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 150000001735 carboxylic acids Chemical class 0.000 description 3
- 239000004359 castor oil Substances 0.000 description 3
- 235000019438 castor oil Nutrition 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 3
- 229940113120 dipropylene glycol Drugs 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 3
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical class CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920001451 polypropylene glycol Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 150000004756 silanes Chemical class 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000003626 triacylglycerols Chemical class 0.000 description 3
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 description 2
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000012963 UV stabilizer Substances 0.000 description 2
- 239000002318 adhesion promoter Substances 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- GHLKSLMMWAKNBM-UHFFFAOYSA-N dodecane-1,12-diol Chemical compound OCCCCCCCCCCCCO GHLKSLMMWAKNBM-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- TZMQHOJDDMFGQX-UHFFFAOYSA-N hexane-1,1,1-triol Chemical compound CCCCCC(O)(O)O TZMQHOJDDMFGQX-UHFFFAOYSA-N 0.000 description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 2
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- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
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- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 2
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- GTTSNKDQDACYLV-UHFFFAOYSA-N Trihydroxybutane Chemical compound CCCC(O)(O)O GTTSNKDQDACYLV-UHFFFAOYSA-N 0.000 description 1
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- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2405/00—Adhesive articles, e.g. adhesive tapes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
-
- 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]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
Definitions
- the present invention relates to adhesives based on polyester polyols and high molecular weight Diisocyanatprepolymeren with a low content of monomeric diisocyanates, and their use for bonding composite materials. These bonded substrates are then sterilized and have a reduced amount of migratory components.
- Reactive polyurethane adhesives in particular two-component curing systems, generally contain polymers with urethane groups and reactive isocyanate groups. For many applications, these compositions are solvent-free.
- An important criterion for the use of such adhesives in food packaging or pharmaceutical products is the content of migratory constituents which, when stored, can pass from the adhesive layer into the packaged good. This should be very low and below predetermined specific limits.
- Low molecular weight by-products can often reduce the viscosity and high molecular weight by-products increase the viscosity considerably.
- Adhesive properties of an adhesive can also be influenced.
- solvents are often used as constituents of the adhesives. These lead to a slight application, but must be removed from the adhesive before bonding.
- EP 1253159 This describes a structural adhesive based on a PU prepolymer containing reactive aromatic isocyanate groups, wherein a proportion of less than 2 wt .-% of free polyisocyanate monomers are included.
- the OH component of the adhesive is only described as a flat rate. No flexible bonds are described.
- EP 0827995 is known. This describes a method for bonding two substrates, wherein a PU hot melt adhesive is applied.
- the hotmelt adhesive is said to contain only a small proportion of unreacted aromatic isocyanate monomers. These are hot melt adhesives, ie they are at temperatures of 120 to 180 0 C. applied. Only one-component adhesives are described which crosslink via moisture.
- EP 1010519 is known. This describes sterilizable composite films, wherein these composite films are composed of several layers. Laminating adhesives are described for joining the individual films, which may be solvent-based, solvent-free or aqueous systems. A specific selection of reactive 2K PU adhesives is not described.
- the PU adhesives of the prior art are often not suitable as a laminating adhesive, since an unsuitable viscosity behavior does not allow a fast application with a small layer thickness.
- Low levels of migratory aromatic amines are obtained by a long shelf life after processing at elevated temperature.
- the cacheability required in many applications is not ensured, i. there should be no delamination and adhesion deterioration under the process conditions.
- the problem of cleavage of migrating amines under sterilization conditions is not considered.
- the 2K PU adhesive suitable as a sterilizable laminating adhesive according to the invention consists of an isocyanate component A based on reactive PU prepolymers and a polyol component B. It is free of organic solvents.
- the components are usually highly viscous or solid at room temperature. By heating to about 80 0 C, the ingredients can be liquefied or lowered in viscosity, they can then be easily mixed and processed.
- aromatic diisocyanates are to be used as monomeric diisocyanates which are suitable for the preparation of the PU prepolymers of component A.
- aromatic diisocyanates are, for example, naphthalene-1, 5-diisocyanate (NDI), diphenylmethane-4,4'-diisocyanate (MDI), diphenylmethane-2,4'-diisocyanate, xylylene diisocyanate (XDI), di- and tetraalkyl-diphenylmethane - diisocyanate, 4,4'-dibenzyl diisocyanate, 1, 3-phenylene diisocyanate, 1, 4-phenylene diisocyanate, tetramethylxylene diisocyanate (m-TMXDI, p-TMXDI) or the isomers of toluene diisocyanate (TDI).
- NDI naphthalene-1, 5-diiso
- proportionally known aliphatic diisocyanates can be used in the prepolymer, such as 4,4'-dicyclohexylmethane diisocyanate (H12MDI), 1 -lsocyanatomethyl-3-isocyanato-i, 5,5-trimethyl-cyclohexane (isophorone diisocyanate, IPDI ), Cyclohexane-1,4-diisocyanate, hydrogenated xylylene diisocyanate (H6XDI), 1-methyl-2,4-diisocyanato-cyclohexane, dimer fatty acid diisocyanate, tetramethoxybutane-1,4-diisocyanate, butane-1,4-diisocyanate, Hexane-1,6-diisocyanate (HDI), 1,6-diisocyanato-2,2,4-trimethylhexane, 1,6-diisocyana
- low molecular weight diols and / or triols are used, these alcohols should have a molecular weight below 2000 g / mol (number average molecular weight, M N , as determined by GPC). These may be aliphatic and / or aromatic alcohols having 2 or 3 OH groups per molecule. The OH groups can be both primary and secondary.
- Suitable aliphatic alcohols include polyalkylene polyols such as ethylene glycol, 1,2-propanediol, 1,3-propanediol, 2,2-dimethyl-1,3-propanediol, 2-methylpropanediol, 1,6-hexanediol, 2,4, 4-thymethylhexanediol-1, 6, 2,2,4-thymethylhexanediol-1, 6, 1, 4-cyclohexanedimethanol, diethyleneglycol, triethyleneglycol, tetraethyleneglycol, dipropyleneglycol, butanediol-1, 4, pentanediol-1, 5, hexanediol-1, 6, heptanediol-1, 7, octanediol-1, 8 and their higher homologs or isomers of up to 30 carbon atoms. It is also possible to use trifunctional aliphatic alcohols having a
- reaction products of low molecular weight di- or trifunctional alcohols with alkylene oxides so-called polyethers.
- the alkylene oxides preferably have 2 to 4 C atoms, such as ethylene oxide, propylene oxide or butylene oxide.
- polyester polyols can be used as polyol and polyester polyols. Suitable are polyester polyols obtained by reacting polyfunctional, preferably difunctional, alcohols and polyfunctional, preferably difunctional and / or trifunctional carboxylic acids. Instead of free polycarboxylic acids, it is also possible to use the corresponding polycarboxylic anhydrides or corresponding polycarboxylic acid esters with alcohols having preferably 1 to 3 C atoms.
- the polycarboxylic acids may be aliphatic, cycloaliphatic, aromatic or heterocyclic. They may optionally be substituted, for example by alkyl groups, alkenyl groups, ether groups or halogens.
- suitable polycarboxylic acids are succinic acid, adipic acid, suberic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, tetrachlorophthalic anhydride, endomethylenetetrahydrophthalic anhydride, glutaric anhydride, maleic acid, maleic anhydride, fumaric acid, dimer fatty acid or trimer fatty acid or mixtures of two or more suitable.
- tricarboxylic acids are preferred Citric acid or trimellitic acid. Processes for the preparation of such polyester polyols are known to the person skilled in the
- polyesters can also be prepared from lactones, for example based on ⁇ -caprolactone, or from hydroxycarboxylic acids, for example ⁇ -hydroxycaproic acid.
- suitable polyols are polycarbonate polyols.
- polyester polyols of oleochemical origin can be obtained, for example, by complete ring opening of epoxidized triglycerides of an at least partially olefinically unsaturated fatty acid-containing fat mixture with one or more alcohols having 1 to 12 carbon atoms and subsequent partial transesterification of the triglyceride derivatives to alkyl ester polyols having 1 to 12 C atoms in the alkyl radical getting produced.
- dimer diols Henkel
- castor oil and its derivatives are suitable.
- the polyols for the preparation of the PU prepolymers should have a molecular weight above 60 to below 2000 g / mol, in particular up to about 1000 g / mol. Mixtures of dihydric and trihydric alcohols can be used so that the average functionality is in the required range. However, castor oil and / or in particular diols, such as polyether diols, are preferably used.
- the reaction of the diisocyanates with the alcohols is carried out in a conventional manner, optionally with the addition of aprotic solvents.
- aprotic solvents In order to avoid the formation of higher oligomers, it is expedient to use a high stoichiometric excess of diisocyanates in relation to the diols used, with an NCO: OH ratio of greater than 5, in particular greater than 10. Ggf. Catalysts known per se can be used to accelerate the reaction between the isocyanate group and the alcohol group.
- reaction procedure and the stoichiometric ratio of monomeric diisocyanate and diol should be chosen such that that the OH groups are reacted with isocyanates and a construction of polymers with several diol units is kept as low as possible.
- the resulting high molecular weight diisocyanate within the meaning of this invention should contain at most 0.5 wt .-% of monomeric diisocyanate, based on the high molecular weight diisocyanate, preferably less than 0.1 wt. -% in particular less than 0.05 wt .-%.
- the purification step can be carried out by processes known per se; in particular, the excess monomeric diisocyanate should be removed from the reaction mixture by distillation. For this purpose, the distillation is carried out in a known manner in vacuo with the aid of a thin-film evaporator or a thin-film evaporator. In this case, residues of solvents are removed from this precursor.
- Another procedure uses a mixture of MDI and TDI prepolymers, wherein the amount of MDI prepolymer can be up to 30 wt .-%.
- suitable 2-component PU adhesive nonpolar polyester polyols are suitable. These may be obtained, for example, by condensation of di- or tricarboxylic acids, e.g. Adipic acid, sebacic acid, glutaric acid, azelaic acid, suberic acid, undecanedioic dodecanedioic acid, 3,3-dimethylglutaric acid, terephthalic acid, isophthalic acid, hexahydrophthalic acid, dimer fatty acid or mixtures thereof with low molecular weight diols or triols, e.g.
- di- or tricarboxylic acids e.g. Adipic acid, sebacic acid, glutaric acid, azelaic acid, suberic acid, undecanedioic dodecanedioic acid, 3,3-dimethylglutaric acid, terephthalic acid, isophthalic acid, hexahydrophthalic acid, dimer fatty acid or mixtures
- Ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, 1, 4-butanediol, 1, 6-hexanediol, 1, 8-octanediol, 1, 10-decanediol, 1, 12-dodecanediol, dimer fatty alcohol, glycerol, trimethylolpropane or mixtures thereof can.
- polyester polyols should have non-polar properties, ie they should be hydrophobic. That can for example done by choosing the carboxylic acids.
- polyester polyols are suitable which contain a proportion of long-chain Cs to C 2 o-dicarboxylic acids, in particular C10 to C16 dicarboxylic acids. Examples are sebacic acid, azelaic acid, dodecanoic acid or dinner fatty acid.
- the proportion of these long-chain dicarboxylic acids should be at least 10 to 50 mol .-%, in particular between 20 to 40 mol .-%, based on the dicarboxylic acids contained in the hydrophobic polyester.
- the polyester polyols should have a molecular weight (number average molecular weight, M N ) of 500 to 3000 g / mol, in particular up to 2000 g / mol. They have an average functionality less than 3.
- polyester polyols of oleochemical origin also have nonpolar properties. These can be used in addition to the above-mentioned polyester polyols.
- Such polyester polyols can be obtained, for example, by complete ring opening of epoxidized triglycerides of an at least partially olefinically unsaturated fatty acid-containing fat mixture with one or more alcohols having 1 to 12 carbon atoms and subsequent partial transesterification of the triglycek derivatives to alkyl ester polyols having 1 to 12 carbon atoms in the alkyl radical getting produced.
- castor oil and its derivatives are also suitable.
- the amount of oleochemical polyols based on the polyols of component B can be up to 30% by weight.
- component B may contain other low molecular weight 3 to 6-hydric alcohols. These increase the crosslinking density of the adhesive. These are preferably polyols having a molecular weight of less than 400 g / mol, for example trimethylolpropane, trimethylolethane, hexanetriol, pentaerythritol, glycerol or polyhydric sugar alcohols. The amount should be less than 15 wt .-% based on the hydrophobic polyester polyols.
- the compositions suitable for use in accordance with the invention as 2K PU adhesives may optionally additionally comprise catalysts which accelerate crosslinking after application of the adhesive.
- Suitable catalysts for use in accordance with the invention are, for example, the organometallic compounds of tin, iron, titanium or bismuth, such as tin (II) salts of carboxylic acids, dialkyl tin (IV) carboxylates, tin oxides and sulfides. Such compounds are described in the literature and are commercially available.
- aliphatic tertiary amines in particular cyclic structure or in polymeric form.
- Derivatives of morpholine are also suitable. Such compounds can also be used together with the mentioned metal catalysts.
- composition according to the invention may optionally additionally contain stabilizers, adhesion-promoting additives, tackifying resins, fillers, pigments, plasticizers and / or solvents.
- Stabilizers are, for example, antioxidants, UV stabilizers or hydrolysis stabilizers to understand.
- the choice of these stabilizers depends firstly on the main components of the composition and secondly on the application conditions and the expected loads on the bonded product.
- hydrolysis stabilizers of the carbodiimide type or UV stabilizers of the HALS type can be used.
- compositions according to the invention still tackifying resins such as abietic acid, Abietinklareester, terpene resins, terpene phenolic resins or hydrocarbon resins; Fillers or pigments, in particular also as platelet-shaped particles, for example silicates, talc, titanium dioxide, bentonites, calcium carbonate or calcium sulfate, clays or carbon black; Plasticizers such as esters of aromatic dicarboxylic acids, benzoate esters, medicinal white oils, polybutene, polyisoprene oligomers and hydrogenated derivatives; Dry medium, like Tetraalkoxysilanes, alkyltrialkoxysilanes or zeolites; or thixotropic agents.
- resins such as abietic acid, Abietinkladilane, terpene resins, terpene phenolic resins or hydrocarbon resins
- Fillers or pigments in particular also as platelet-shaped particles, for example silicates, talc
- Adhesion promoters can also be added.
- these are organofunctional silanes such as hydroxy-functional, (meth) acryloxy-functional, amino-functional, epoxy-functional or isocyanate-functional silanes which contain two or three hydrolyzable alkoxy groups, in particular methoxy or ethoxy groups.
- NCO-group adhesion promoters contain reactive groups, it is desirable that they be mixed in the B component.
- These silanes can also react with the reactive groups of component A or B in the curing adhesive and are incorporated into the polymer.
- the inventively suitable adhesive for bonding composite materials is a 2-component adhesive.
- the various additives and other ingredients may be included in either component.
- Desiccants may be included in particular in component B. Care should be taken when the additive functional group reactive with NCO groups that they are usually not or only in small amounts in the component A should be included. Otherwise, a storage stability of the adhesive is not guaranteed.
- the mixing ratio of component A to component B should be from 6: 1 to 2.5: 1, in particular from 5: 1 to 3: 1.
- the use of a high molecular weight NCO-reactive prepolymer weight greater amounts of NCO-reactive components are used, which leads to improved metering availability of the components and increased application security.
- the two components of the adhesive are either highly viscous, or they may be solid at room temperature. To ensure good miscibility, solid adhesive components are heated prior to mixing.
- the isocyanate component should at 60 0 C have a viscosity less than 5000 mPas (Brookfield Thermosel, EN ISO 2555). It is preferred, when the adhesive components are mixed, that they have a similar viscosity, ie that they differ less than 2000 mPas.
- the adhesive should have a viscosity of less than 5000 mPas immediately after mixing of the components, in particular below 3000 mPas (measured at 60 ° C.).
- the mixing of the adhesives can be carried out by known methods. On the one hand, it is possible to disperse the component which is solid at room temperature in the viscous component by means of high-speed stirring units and thereby to dissolve it. Another procedure heats one or both components, so that a mixture of both components in the heat in the liquid state is possible. A third procedure mixes the flowable components, for example by a rotor / stator mixer, so that a compulsory mixture of the components is given.
- the components are preferably from 30 to 80 0 C are mixed, in particular to 60 ° C.
- the adhesive is applied to the substrate.
- the known films can be used. These are, for example, those based on polyesters, polyvinyl chloride, polyamides, polyolefins, polyacrylates or metal foils.
- the films have a thickness between 5 to 100 microns. These are flexible substrates.
- the adhesive can be applied by known methods, for example by spray application, by roll application or by pressure application.
- the layer thickness of the adhesive on the substrate should be from 2 to 25 ⁇ m, in particular from 5 to 15 ⁇ m.
- the second film to be bonded is placed on the adhesive surface. If necessary, pressure can be exerted, the crosslinking can be accelerated by an elevated temperature.
- the inventively suitable isocyanate-containing adhesive contains only small amounts of monomeric aromatic diisocyanates. This is ensured by the process control during manufacture. Accordingly, the content of monomeric aromatic diisocyanates is low even in the applied 2K adhesive. The rapid reaction of both components reduces a hydrolysis reaction of possible monomeric diisocyanates with water. As a result, the proportions of aromatic diamines in the bonded substrate are very low.
- the composite materials bonded according to the invention can be further processed with the known measures. There is a longer annealing, i. Heating and storage of materials, not necessary before processing. These can be wound up immediately, transported or further processed. In particular, they are suitable for further processing to sterilizable objects. It may be articles for medical applications, but it is also possible to produce sterilizable food packaging.
- the corresponding packaging is produced from the composite materials. These can either be subjected to sterilization prior to filling with the contents, or they are sterilized after filling with the contents.
- the usual sterilization procedures can be used. For example, it is possible to sterilize such packages by high-energy radiation, for example UV radiation, electron radiation or radioactive radiation. Care must be taken that the radiation does not damage the packaging material, in this case the film.
- One other sterilization process works with increased temperature and humidity. In this case, for example, such packaging at about 130 0 C with steam under pressure for a period up to 45 min. applied. Under these conditions, the germs are killed. The composite film or the bond remains intact. Also, the adhesive is not degraded significantly. The migrating amines of the sterilized packaging are not elevated.
- Another object of the invention are composite materials prepared with an inventively suitable adhesive that can be sterilized.
- a film is coated with a suitable adhesive according to the invention and glued with another film. If necessary, it is possible to repeat this process so that multilayer composite films are obtained. Immediately after bonding, the resulting films are rolled up. In one embodiment, it is possible to process such films without time-consuming post-treatment.
- the packaging materials are cut from the film materials, molded and the individual parts connected to each other. Subsequently, the packaging can be subjected to sterilization. The curing of the adhesive has completely occurred.
- the further processing and the determination of the primary aromatic amines can be carried out, for example, already 24 or 48 hours after the preparation.
- the stability of the adhesive used according to the invention is so great that degradation of the crosslinked polyurethane is not observed even under elevated temperature and exposure to moisture.
- the amount of migratable extractable primary aromatic amines produced or contained in the composite film by the adhesive layer is less than 5 ppb.
- an advantage of the films bonded according to the invention and of the packages produced therefrom is that they do not form any migratable aromatic amines.
- these For food and medical packaging, it is a requirement that these contain only a small proportion of such primary aromatic amines.
- the methods for determining such amines are defined in VO 1935/2004 / EC, RiLi 2002/72 EC, including supplements. These measured amines are usually not determined individually, but measured over total quantities.
- These aromatic amines can be formed as residues of the educts from the production of the materials, for example the adhesive. However, they can also be caused by the chemical reaction of the adhesive or by a chemical degradation of the adhesive layer. This is prevented when using the adhesives selected according to the invention.
- Viscosity 4200 mPas at 80 0 C
- the polyester is bottled.
- Viscosity 500 mPas at 80 0 C, 2,000 mPas at 50 ° C
- the prepolymer has a viscosity of 2290 mPas at 40 ° C.
- a polyol polyol (polyester diol from adipic acid and hexanediol, OHZ 84 mg KOH / g) and 4 g of trimethylolpropane are mixed with 82.5 g of TDI and about 0.1 g tosyl isocyanate and reacted at 60 to 75 ° C. After 1.5 hours, the batch is freed from monomeric TDI in vacuo.
- the prepolymer has a viscosity of 8400 mPas at 50 0 C, and 700 mPas at 50 0 C.
- Example 1 There are mixed in each case 75 g of a polyol according to Example 1 and Example 2. For this purpose, 50 g of a prepolymer according to Example 4 are given. The mixture is applied immediately.
- PET film Polyethylene terephthalate film type RNK 12 (thickness 12 ⁇ m).
- Adhesive mixture according to Example 5 or 6 applied and immediately with a
- the films are stored for 48 hours, after which a packaging can be produced.
- a film stored for 3 days with and without sterilization is extracted according to RiLi 2002/72 EC and analyzed for aromatic amines.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810060885 DE102008060885A1 (de) | 2008-12-09 | 2008-12-09 | PU-Klebstoffen für sterilisierbare Verbundfolien |
| PCT/EP2009/064981 WO2010066525A1 (de) | 2008-12-09 | 2009-11-11 | Pu-klebstoffen für sterilisierbare verbundfolien |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2356165A1 true EP2356165A1 (de) | 2011-08-17 |
Family
ID=41571763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09752802A Withdrawn EP2356165A1 (de) | 2008-12-09 | 2009-11-11 | Pu-klebstoffen für sterilisierbare verbundfolien |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8500948B2 (de) |
| EP (1) | EP2356165A1 (de) |
| DE (1) | DE102008060885A1 (de) |
| WO (1) | WO2010066525A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2695900B1 (de) * | 2012-08-06 | 2019-03-20 | Novachem Industriale S.r.l. | Verfahren zur herstellung eines zweikomponenten-polyurethanklebstoffsystems |
| CN104837882A (zh) | 2012-11-14 | 2015-08-12 | 汉高股份有限及两合公司 | 用于粘结纸浆模制部件的双组分粘合剂 |
| DE102015207792A1 (de) * | 2015-04-28 | 2016-11-03 | Henkel Ag & Co. Kgaa | Polyurethan-basiertes Bindemittel-System |
| US11198803B2 (en) | 2015-07-31 | 2021-12-14 | Dow Global Technologies Llc | Aminobenzoate-terminated materials for laminated adhesives |
| JP6980754B2 (ja) * | 2016-07-11 | 2021-12-15 | ダウ グローバル テクノロジーズ エルエルシー | 高固形分溶剤型接着剤組成物およびその製造方法 |
| CN108559440B (zh) * | 2018-04-27 | 2021-12-14 | 上海回天新材料有限公司 | 一种高速复合、快速熟化的无溶剂型聚氨酯复膜胶及其制备方法和应用 |
| CN108559435B (zh) * | 2018-04-27 | 2021-12-14 | 上海回天新材料有限公司 | 一种与聚氨酯油墨匹配性优良的无溶剂型聚氨酯复膜胶及其制备方法和应用 |
| EP3659797A1 (de) * | 2018-11-29 | 2020-06-03 | Henkel AG & Co. KGaA | Polyurethanklebstoff mit hoher chemischer beständigkeit |
| US12528980B2 (en) * | 2019-06-03 | 2026-01-20 | Arkema France | Method for reducing coefficient of friction of a laminate comprising a polyurethane adhesive |
| CN112538189B (zh) * | 2019-09-20 | 2022-10-21 | 中国石油化工股份有限公司 | 一种包含磺化聚乙烯醇和聚乙二醇的智能控湿阻隔复合薄膜及其制备方法和应用 |
| JP2021195157A (ja) * | 2020-06-15 | 2021-12-27 | 大日本印刷株式会社 | 包装材、包装材の製造方法、及び包装材を備える包装容器の使用方法 |
| CN111826117B (zh) * | 2020-08-17 | 2021-09-24 | 山东乐邦化工科技有限公司 | 一种双组份聚氨酯密封隔热胶 |
| DE102021207157A1 (de) | 2021-07-07 | 2023-01-12 | Contitech Usa, Inc. | Mehrschichtiger Schlauch mit einer metallenen Sperrschicht und Brandschutz |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4136490C2 (de) * | 1991-11-06 | 2003-04-30 | Bayer Ag | Lösungsmittelfreie Beschichtungssysteme |
| MX9703702A (es) * | 1996-05-22 | 1998-06-30 | Fuller H B Licensing Financ | Adhesivos mejorados de laminacion basados en isocianato. |
| CA2214311A1 (en) | 1996-09-06 | 1998-03-06 | Air Products And Chemicals, Inc. | Hot melt adhesives comprising low free monomer, low oligomer isocyanate prepolymers |
| EP1010519A1 (de) | 1998-12-16 | 2000-06-21 | Alusuisse Technology & Management AG | Sterilisierbare Verbundfolie |
| DE10108025A1 (de) * | 2001-02-19 | 2002-09-05 | Henkel Kgaa | Zweikomponentiger Polyurethan-Klebstoff für Holzwerkstoffe |
| US6866743B2 (en) | 2001-04-12 | 2005-03-15 | Air Products And Chemicals, Inc. | Controlled structure polyurethane prepolymers for polyurethane structural adhesives |
| DE102004018048A1 (de) | 2004-04-08 | 2005-11-10 | Henkel Kgaa | Verfahren zur Herstellung von Polyurethan-Prepolymeren |
| US8933188B2 (en) * | 2004-11-12 | 2015-01-13 | Henkel US IP LLC | Low misting laminating adhesives |
| EP1964868A1 (de) * | 2007-03-01 | 2008-09-03 | Henkel AG & Co. KGaA | Migrationsarme Polyurethane |
-
2008
- 2008-12-09 DE DE200810060885 patent/DE102008060885A1/de not_active Ceased
-
2009
- 2009-11-11 EP EP09752802A patent/EP2356165A1/de not_active Withdrawn
- 2009-11-11 WO PCT/EP2009/064981 patent/WO2010066525A1/de not_active Ceased
-
2011
- 2011-05-24 US US13/114,387 patent/US8500948B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2010066525A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010066525A1 (de) | 2010-06-17 |
| US20120021227A1 (en) | 2012-01-26 |
| US8500948B2 (en) | 2013-08-06 |
| DE102008060885A1 (de) | 2010-06-10 |
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