EP1937740A1 - Reaktive polyurethan-heissschmelzklebstoffe mit niedrigem isocyanat-monomergehalt - Google Patents
Reaktive polyurethan-heissschmelzklebstoffe mit niedrigem isocyanat-monomergehaltInfo
- Publication number
- EP1937740A1 EP1937740A1 EP06806899A EP06806899A EP1937740A1 EP 1937740 A1 EP1937740 A1 EP 1937740A1 EP 06806899 A EP06806899 A EP 06806899A EP 06806899 A EP06806899 A EP 06806899A EP 1937740 A1 EP1937740 A1 EP 1937740A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- polyurethane polymer
- hydrocarbon radical
- aldimine
- atoms
- 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- Withdrawn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
- 239000004831 Hot glue Substances 0.000 title claims description 24
- 239000000178 monomer Substances 0.000 title description 5
- 239000004814 polyurethane Substances 0.000 claims abstract description 130
- 229920002635 polyurethane Polymers 0.000 claims abstract description 130
- 239000000203 mixture Substances 0.000 claims abstract description 113
- 150000004705 aldimines Chemical group 0.000 claims abstract description 83
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 17
- 125000005842 heteroatom Chemical group 0.000 claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 9
- 125000002837 carbocyclic group Chemical group 0.000 claims abstract description 5
- 150000002825 nitriles Chemical class 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 125000002130 sulfonic acid ester group Chemical group 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims description 129
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 66
- 150000002009 diols Chemical class 0.000 claims description 46
- 125000005442 diisocyanate group Chemical group 0.000 claims description 38
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 125000004432 carbon atom Chemical group C* 0.000 claims description 27
- 239000004215 Carbon black (E152) Substances 0.000 claims description 26
- 229930195733 hydrocarbon Natural products 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 23
- 239000007787 solid Substances 0.000 claims description 22
- 229920000728 polyester Polymers 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 13
- 125000001424 substituent group Chemical group 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 10
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 150000002148 esters Chemical class 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 150000003512 tertiary amines Chemical class 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 4
- 239000000123 paper Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000004753 textile Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000010382 chemical cross-linking Methods 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 239000011368 organic material Substances 0.000 claims description 2
- 229910052573 porcelain Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 125000003262 carboxylic acid ester group Chemical class [H]C([H])([*:2])OC(=O)C([H])([H])[*:1] 0.000 claims 2
- 238000009776 industrial production Methods 0.000 claims 1
- 150000001412 amines Chemical class 0.000 abstract description 24
- 229920005862 polyol Polymers 0.000 abstract description 6
- 150000003077 polyols Chemical class 0.000 abstract description 6
- 150000001733 carboxylic acid esters Chemical class 0.000 abstract description 3
- ALJYEHUPOPFBCG-UHFFFAOYSA-N nitrophosphonic acid Chemical compound OP(O)(=O)[N+]([O-])=O ALJYEHUPOPFBCG-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005056 polyisocyanate Substances 0.000 abstract 2
- 229920001228 polyisocyanate Polymers 0.000 abstract 2
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 abstract 1
- -1 LOW ISOCYANATE Chemical class 0.000 description 45
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 19
- 238000004132 cross linking Methods 0.000 description 16
- 150000001299 aldehydes Chemical class 0.000 description 15
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical class C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 12
- 239000012948 isocyanate Substances 0.000 description 11
- 150000002513 isocyanates Chemical class 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 9
- 239000000543 intermediate Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 125000003277 amino group Chemical group 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 8
- 150000004985 diamines Chemical class 0.000 description 8
- 150000005690 diesters Chemical class 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 150000007513 acids Chemical class 0.000 description 7
- 150000001298 alcohols Chemical class 0.000 description 7
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 7
- 230000009965 odorless effect Effects 0.000 description 7
- 229920000570 polyether Polymers 0.000 description 7
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 7
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 6
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 6
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 description 5
- CNPURSDMOWDNOQ-UHFFFAOYSA-N 4-methoxy-7h-pyrrolo[2,3-d]pyrimidin-2-amine Chemical compound COC1=NC(N)=NC2=C1C=CN2 CNPURSDMOWDNOQ-UHFFFAOYSA-N 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 5
- 150000001735 carboxylic acids Chemical class 0.000 description 5
- 230000007717 exclusion Effects 0.000 description 5
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 5
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical class CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 5
- 230000003301 hydrolyzing effect Effects 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 description 4
- 239000000370 acceptor Substances 0.000 description 4
- 238000007259 addition reaction Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 4
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 4
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 4
- 238000005886 esterification reaction Methods 0.000 description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 4
- GKQPCPXONLDCMU-CCEZHUSRSA-N lacidipine Chemical compound CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1C1=CC=CC=C1\C=C\C(=O)OC(C)(C)C GKQPCPXONLDCMU-CCEZHUSRSA-N 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 4
- ITZPOSYADVYECJ-UHFFFAOYSA-N n'-cyclohexylpropane-1,3-diamine Chemical compound NCCCNC1CCCCC1 ITZPOSYADVYECJ-UHFFFAOYSA-N 0.000 description 4
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
- RSPCKAHMRANGJZ-UHFFFAOYSA-N thiohydroxylamine Chemical class SN RSPCKAHMRANGJZ-UHFFFAOYSA-N 0.000 description 4
- 125000003396 thiol group Chemical group [H]S* 0.000 description 4
- XFNJVJPLKCPIBV-UHFFFAOYSA-N trimethylenediamine Chemical compound NCCCN XFNJVJPLKCPIBV-UHFFFAOYSA-N 0.000 description 4
- YRDQAIWXWUHXPQ-UHFFFAOYSA-N (2,2-dimethyl-3-oxopropyl) dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCC(C)(C)C=O YRDQAIWXWUHXPQ-UHFFFAOYSA-N 0.000 description 3
- SQFCBBLSKSECMB-UHFFFAOYSA-N 2-(3-aminopropoxy)ethanol Chemical compound NCCCOCCO SQFCBBLSKSECMB-UHFFFAOYSA-N 0.000 description 3
- ASDQMECUMYIVBG-UHFFFAOYSA-N 2-[2-(2-aminoethoxy)ethoxy]ethanol Chemical compound NCCOCCOCCO ASDQMECUMYIVBG-UHFFFAOYSA-N 0.000 description 3
- DCZMLYRQHBZWLZ-UHFFFAOYSA-N 2-[2-(3-aminopropoxy)ethoxy]ethanol Chemical compound NCCCOCCOCCO DCZMLYRQHBZWLZ-UHFFFAOYSA-N 0.000 description 3
- SWESRARCMPPTGM-UHFFFAOYSA-N 2-[4-(2-aminoethyl)phenyl]ethanol Chemical compound NCCC1=CC=C(CCO)C=C1 SWESRARCMPPTGM-UHFFFAOYSA-N 0.000 description 3
- JZUHIOJYCPIVLQ-UHFFFAOYSA-N 2-methylpentane-1,5-diamine Chemical compound NCC(C)CCCN JZUHIOJYCPIVLQ-UHFFFAOYSA-N 0.000 description 3
- WMRCTEPOPAZMMN-UHFFFAOYSA-N 2-undecylpropanedioic acid Chemical compound CCCCCCCCCCCC(C(O)=O)C(O)=O WMRCTEPOPAZMMN-UHFFFAOYSA-N 0.000 description 3
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 3
- YFEAYNIMJBHJCM-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-ol Chemical compound CC1(C)CC(O)CC(C)(CN)C1 YFEAYNIMJBHJCM-UHFFFAOYSA-N 0.000 description 3
- LQGKDMHENBFVRC-UHFFFAOYSA-N 5-aminopentan-1-ol Chemical compound NCCCCCO LQGKDMHENBFVRC-UHFFFAOYSA-N 0.000 description 3
- GSLKMTUWTDRKOT-UHFFFAOYSA-N 6-(3-aminopropoxy)hexan-1-ol Chemical compound NCCCOCCCCCCO GSLKMTUWTDRKOT-UHFFFAOYSA-N 0.000 description 3
- SUTWPJHCRAITLU-UHFFFAOYSA-N 6-aminohexan-1-ol Chemical compound NCCCCCCO SUTWPJHCRAITLU-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 3
- 239000005639 Lauric acid Substances 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 229920002396 Polyurea Polymers 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 239000001361 adipic acid Substances 0.000 description 3
- 235000011037 adipic acid Nutrition 0.000 description 3
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- MRNZSTMRDWRNNR-UHFFFAOYSA-N bis(hexamethylene)triamine Chemical compound NCCCCCCNCCCCCCN MRNZSTMRDWRNNR-UHFFFAOYSA-N 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
- 235000013877 carbamide Nutrition 0.000 description 3
- 238000006482 condensation reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000032050 esterification Effects 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 150000002334 glycols Chemical class 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 150000002736 metal compounds Chemical class 0.000 description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 3
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 150000002917 oxazolidines Chemical class 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- 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
- LFSYUSUFCBOHGU-UHFFFAOYSA-N 1-isocyanato-2-[(4-isocyanatophenyl)methyl]benzene Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=CC=C1N=C=O LFSYUSUFCBOHGU-UHFFFAOYSA-N 0.000 description 2
- SWVSKCPPMNGBGL-UHFFFAOYSA-N 10-aminodecan-1-ol Chemical compound NCCCCCCCCCCO SWVSKCPPMNGBGL-UHFFFAOYSA-N 0.000 description 2
- JMKBPENVULMVDP-UHFFFAOYSA-N 10-aminodecane-1-thiol Chemical compound NCCCCCCCCCCS JMKBPENVULMVDP-UHFFFAOYSA-N 0.000 description 2
- VGKUQBORKKSJMG-UHFFFAOYSA-N 2,2,6-trimethylcyclohexane-1,4-diamine Chemical compound CC1CC(N)CC(C)(C)C1N VGKUQBORKKSJMG-UHFFFAOYSA-N 0.000 description 2
- DPQHRXRAZHNGRU-UHFFFAOYSA-N 2,4,4-trimethylhexane-1,6-diamine Chemical compound NCC(C)CC(C)(C)CCN DPQHRXRAZHNGRU-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- FTZILAQGHINQQR-UHFFFAOYSA-N 2-Methylpentanal Chemical compound CCCC(C)C=O FTZILAQGHINQQR-UHFFFAOYSA-N 0.000 description 2
- ICSNLGPSRYBMBD-UHFFFAOYSA-N 2-aminopyridine Chemical compound NC1=CC=CC=N1 ICSNLGPSRYBMBD-UHFFFAOYSA-N 0.000 description 2
- FZZMTSNZRBFGGU-UHFFFAOYSA-N 2-chloro-7-fluoroquinazolin-4-amine Chemical compound FC1=CC=C2C(N)=NC(Cl)=NC2=C1 FZZMTSNZRBFGGU-UHFFFAOYSA-N 0.000 description 2
- BYGQBDHUGHBGMD-UHFFFAOYSA-N 2-methylbutanal Chemical compound CCC(C)C=O BYGQBDHUGHBGMD-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- ANOPCGQVRXJHHD-UHFFFAOYSA-N 3-[3-(3-aminopropyl)-2,4,8,10-tetraoxaspiro[5.5]undecan-9-yl]propan-1-amine Chemical compound C1OC(CCCN)OCC21COC(CCCN)OC2 ANOPCGQVRXJHHD-UHFFFAOYSA-N 0.000 description 2
- IGSBHTZEJMPDSZ-UHFFFAOYSA-N 4-[(4-amino-3-methylcyclohexyl)methyl]-2-methylcyclohexan-1-amine Chemical compound C1CC(N)C(C)CC1CC1CC(C)C(N)CC1 IGSBHTZEJMPDSZ-UHFFFAOYSA-N 0.000 description 2
- DZIHTWJGPDVSGE-UHFFFAOYSA-N 4-[(4-aminocyclohexyl)methyl]cyclohexan-1-amine Chemical compound C1CC(N)CCC1CC1CCC(N)CC1 DZIHTWJGPDVSGE-UHFFFAOYSA-N 0.000 description 2
- ZEYHEAKUIGZSGI-UHFFFAOYSA-N 4-methoxybenzoic acid Chemical compound COC1=CC=C(C(O)=O)C=C1 ZEYHEAKUIGZSGI-UHFFFAOYSA-N 0.000 description 2
- HVCYXOVITCKDCK-UHFFFAOYSA-N 4-piperidin-3-ylbutan-1-amine Chemical compound NCCCCC1CCCNC1 HVCYXOVITCKDCK-UHFFFAOYSA-N 0.000 description 2
- WYYXDSQOPIGZPU-UHFFFAOYSA-N 6-aminohexane-1-thiol Chemical compound NCCCCCCS WYYXDSQOPIGZPU-UHFFFAOYSA-N 0.000 description 2
- KYJSXYQQYWMITG-UHFFFAOYSA-N 7-aminoheptan-1-ol Chemical compound NCCCCCCCO KYJSXYQQYWMITG-UHFFFAOYSA-N 0.000 description 2
- WDCOJSGXSPGNFK-UHFFFAOYSA-N 8-aminooctan-1-ol Chemical compound NCCCCCCCCO WDCOJSGXSPGNFK-UHFFFAOYSA-N 0.000 description 2
- BWUPKMHSAHUZGN-UHFFFAOYSA-N 8-aminooctane-1-thiol Chemical compound NCCCCCCCCS BWUPKMHSAHUZGN-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
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- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- UWJJYHHHVWZFEP-UHFFFAOYSA-N pentane-1,1-diol Chemical class CCCCC(O)O UWJJYHHHVWZFEP-UHFFFAOYSA-N 0.000 description 1
- WTSXICLFTPPDTL-UHFFFAOYSA-N pentane-1,3-diamine Chemical compound CCC(N)CCN WTSXICLFTPPDTL-UHFFFAOYSA-N 0.000 description 1
- 229960003424 phenylacetic acid Drugs 0.000 description 1
- 239000003279 phenylacetic acid Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920000582 polyisocyanurate Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- HQHCYKULIHKCEB-UHFFFAOYSA-N tetradecanedioic acid Natural products OC(=O)CCCCCCCCCCCCC(O)=O HQHCYKULIHKCEB-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 description 1
- 150000005326 tetrahydropyrimidines Chemical class 0.000 description 1
- AJZGFFKDLABHDD-UHFFFAOYSA-N thiazinane Chemical class C1CCSNC1 AJZGFFKDLABHDD-UHFFFAOYSA-N 0.000 description 1
- 150000003548 thiazolidines Chemical class 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- GRXOWOKLKIZFNP-UHFFFAOYSA-N undecane-1,1-diol Chemical class CCCCCCCCCCC(O)O GRXOWOKLKIZFNP-UHFFFAOYSA-N 0.000 description 1
- KLNPWTHGTVSSEU-UHFFFAOYSA-N undecane-1,11-diamine Chemical compound NCCCCCCCCCCCN KLNPWTHGTVSSEU-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical class OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- PIAOLBVUVDXHHL-VOTSOKGWSA-N β-nitrostyrene Chemical compound [O-][N+](=O)\C=C\C1=CC=CC=C1 PIAOLBVUVDXHHL-VOTSOKGWSA-N 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- 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
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1021—Polyurethanes or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/088—Removal of water or carbon dioxide from the reaction mixture or reaction components
- C08G18/0885—Removal of water or carbon dioxide from the reaction mixture or reaction components using additives, e.g. absorbing agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/089—Reaction retarding agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/12—Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/12—Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
Definitions
- Hotmelt adhesives are adhesives based on thermoplastic polymers. These polymers are solid at room temperature, soften when heated to viscous liquids and can thus be applied as a melt. In contrast to the so-called hot melt adhesives (hot melts), which have a pasty consistency and at slightly elevated temperatures, typically in the range of 40 to 80 0 C, are applied, the hot melt adhesives are applied at temperatures above 85 0 C. When cooled to room temperature they solidify while simultaneously developing the adhesive strength.
- Classic hotmelt adhesives are non-reactive adhesives. When heated, they soften or melt again, making them unsuitable for use at elevated temperature. In addition, conventional hotmelt adhesives often tend to creep (cold flow) even at temperatures far below the softening point.
- reactive polyurethane compositions are suitable as hot-melt adhesives. They are also called PUR-RHM for short. They usually consist of isocyanate group-containing polyurethane polymers which are obtained by reacting suitable polyols with an excess of diisocyanates. After application, they quickly build up a high adhesive strength by cooling and obtain their final properties, in particular their heat resistance and resistance to environmental influences, by the postcrosslinking of the polyurethane polymer as a result of reaction of the Isocyanate groups with moisture.
- PUR-RHM due to the molecular weight distribution resulting from the preparation of the isocyanate-containing polyurethane polymers such PUR-RHM usually contain significant amounts of unreacted monomeric diisocyanates, which in the customary in hot-melt adhesives application temperatures of 85 0 C to 200 0 C, typically 120 0 C to 160 0 C, partial outgassing and can represent a health burden for the processor as irritating, sensitizing or toxic substances. For this reason, various efforts have been made to reduce the content of monomeric diisocyanates in reactive polyurethane compositions in general and in PUR-RHM in particular.
- WO 03/033562 A1 describes the use of an unsymmetrical MDI isomer, 2,4'-diphenylmethane diisocyanate, with which polyurethane polymers with a low content of monomeric diisocyanates can be obtained at low viscosity in a simple manner.
- a disadvantage of this method is the insufficient availability of suitable diisocyanates on an industrial scale, associated with a high price.
- losses in the rate of crosslinking are to be accepted, since only the isocyanate groups with the lower reactivity are available for the main crosslinking reaction.
- PUR-RHM polyurethane compositions
- compositions according to claim 1 contain at room temperature solid, aldimine-containing polyurethane polymers, which can be prepared by reacting corresponding isocyanate-containing polyurethane polymers with specific compounds containing one or more aldimine and an active hydrogen.
- Another aspect of the invention relates to a cured composition according to claim 14, as well as the use of the composition as a hot-melt adhesive and a method for bonding and resulting from such a process article.
- the invention relates to a
- compositions comprising a) at least one room temperature solid, aldimine-containing polyurethane polymer of the formula (I),
- R 1 is either a monovalent hydrocarbon radical having 6 to 30 carbon atoms, which optionally has at least one heteroatom, in particular in the form of ether oxygen; or R 1 is a substituent of the formula (II),
- R 6 is a divalent hydrocarbon radical having 2 to 20 C atoms, which optionally has at least one hetero atom, in particular in the form of ether oxygen, and R 7 is a monovalent hydrocarbon radical having 1 to 20 C atoms ;
- R 2 and R 3 are either two independent substituents, each representing a monovalent hydrocarbon radical having 1 to 12 C atoms, or R 2 and R 3 together form a single substituent containing a bivalent hydrocarbon radical having 4 to 20 C atoms which is part of a carbocyclic ring having 5 to 8, preferably 6, carbon atoms, which carbocyclic ring may be substituted;
- R 4 is a divalent hydrocarbon radical having 2 to 12 C atoms, which optionally has at least one heteroatom, in particular in the form of ether oxygen or tertiary amine nitrogen;
- R 5 is the residue of a room temperature solid, isocyanate group-containing polyurethane polymer after removal of (p + q) isocyanate groups; and
- X is O, S or NR 8 , wherein R 8 is either a monovalent hydrocarbon radical having 1 to 20 C atoms, which optionally has at least one carboxylic acid ester, nitrile, nitro, phosphonic ester, sulfonic or sulfonic acid ester group, or R 8 represents a substituent of the formula (III) with the meanings already mentioned for R 1 , R 2 , R 3 and R 4
- R 1 is a hydrocarbon radical having 11 to 30 C atoms.
- compositions are useful as reactive hot melt adhesive compositions, also referred to as "PUR-RHM" for short.
- polymer in the present document comprises, on the one hand, a collective of chemically uniform, but with respect to degree of polymerization, molecular weight and chain length, different macromolecules. which was produced by a polyreaction (polymerization, polyaddition, polycondensation).
- the term also encompasses derivatives of such a collective of macromolecules from polyreactions, compounds which have been obtained by reactions, such as additions or substitutions, of functional groups on given macromolecules and which may be chemically uniform or chemically nonuniform.
- prepolymers ie reactive oligomeric pre-adducts whose functional groups are involved in the construction of macromolecules.
- polyurethane polymer encompasses all polymers which are prepared by the so-called diisocyanate-polyaddition process, including those polymers which are almost or completely free of urethane groups
- polyurethane polymers are polyether polyurethanes, polyester polyurethanes, polyethers Polyureas, polyureas, polyester-polyureas, polyisocyanurates, and polycarbodiimides.
- Room temperature refers to a temperature of 25 ° C.
- the room temperature solid aldimine group-containing polyurethane polymer of the formula (I) can be prepared by the reaction of at least one aldimine of the formula (XI) containing an active hydrogen with at least one isocyanate group-containing polyurethane polymer D.
- the active hydrogen-bearing reactive group of the aldimine of the formula ( XI) reacts in an addition reaction with an isocyanate group of the polyurethane polymer D.
- active hydrogen in the present document refers to a deprotonatable hydrogen atom bound to a nitrogen, oxygen or sulfur atom
- reactive group containing an active hydrogen denotes a an active hydrogen-containing functional group, in particular a primary or secondary amino group, a hydroxyl group, a mercapto group or a urea group.
- R 1 , R 2 , R 3 , R 4 and X have the same meaning as described for the formula (I).
- the aldimine of the formula (XI) can be prepared from at least one sterically hindered aliphatic aldehyde A and at least one aliphatic amine B corresponding to the formula H 2 NR 4 -XH which, in addition to one or more primary amino groups, also contains another reactive group containing an active hydrogen having.
- the reaction between the aldehyde A and the amine B takes place in a condensation reaction with elimination of water.
- condensation reactions are well known and described, for example, in Houben-Weyl, "Methods of Organic Chemistry", Vol. XI / 2, page 73 et seq ..
- the aldehyde A is used here with respect to the primary amino groups of the amine B stoichiometrically or in stoichiometric excess
- at least one sterically hindered aliphatic aldehyde A of the formula (IV) is used,
- R 1 , R 2 and R 3 have the same meaning as described for formula (I).
- the aldehyde A is odorless.
- an "odorless" substance is meant a substance that is so low in odor that it is not palpable to most human individuals, that is imperceptible to the nose.
- the aldehyde A is prepared, for example, from a carboxylic acid
- R 1 -COOH and a ß-hydroxyaldehyde of the formula (V) in an esterification reaction can be carried out by known methods, for example, in Houben-Weyl, "Methoden der organischen Chemie", Vol. VIII, pages 516-528
- the ⁇ -hydroxyaldehyde of the formula (V) is used, for example, in a crossed aldol addition from formaldehyde or oligomeric forms of formaldehyde, such as Paraformaldehyde or 1,3,5-trioxane - and an aldehyde of formula (VI).
- R 2 and R 3 have the same meaning as described for formula (I).
- suitable carboxylic acids R 1 -COOH for esterification with the .beta.-hydroxyaldehydes of the formula (V) are: saturated aliphatic carboxylic acids such as enanthic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, tridecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, margarinic acid , Stearic acid, nonadecanoic acid, arachidic acid; monounsaturated aliphatic carboxylic acids such as palmitoleic acid, oleic acid, erucic acid; polyunsaturated aliphatic carboxylic acids such as linoleic acid, linolenic acid, elaeostearic acid, arachidonic acid; cycloaliphatic carboxylic acids such as cyclohexane carboxylic acid; arylaliphatic carboxylic acids such as pheny
- caprylic acid Preference is given to caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, the isomers of these acids and technical mixtures of fatty acids which contain these acids. Particularly preferred is lauric acid.
- Suitable aldehydes of the formula (VI) for reacting with formaldehyde to give ⁇ -hydroxyaldehydes of the formula (V) are, for example, isobutyraldehyde, 2-methylbutyraldehyde, 2-ethylbutyraldehyde, 2-methylvaleraldehyde, 2-ethylcapronaldehyde, cyclopentanecarboxaldehyde, cyclohexanecarboxaldehyde, 1, 2, 3,6-tetrahydrobenzaldehyde, 2-methyl-3-phenylpropionaldehyde, 2-phenylpropionaldehyde and diphenylacetaldehyde.
- Isobutyraldehyde is preferred.
- Suitable ⁇ -hydroxyaldehydes of the formula (V) are, for example, the products of the reaction of formaldehyde with the aldehydes of the formula (VI) mentioned above as suitable. Preference is given to 3-hydroxypivalaldehyde.
- the amine B is an aliphatic amine which, in addition to one or more primary amino groups, also has another reactive group which contains an active hydrogen.
- the term "primary amino group” in the present document denotes an NH 2 group which is bonded to an organic radical, while the term “secondary amino group” denotes an NH group which is bonded to two organic radicals.
- the term "aliphatic amine” refers to compounds which contain at least one amino group attached to an aliphatic, cycloaliphatic or arylaliphatic radical and differ from aromatic amines in which the amino group is attached directly to an aromatic radical such as, for example in aniline or 2-aminopyridine.
- Suitable amines B are, for example, the following compounds: aliphatic hydroxyamines such as 2-aminoethanol, 2-methylaminoethanol, 1-amino-2-propanol, 3-amino-1-propanol, 4-amino-1-butanol, 4-amino-2-butanol, 2-amino-2-methylpropanol, 5-amino-1-pentanol, 6-amino-1-hexanol, 7-amino-1-heptanol, 8-amino-1-octanol, 10 Amino-1-decanol, 12-amino-1-dodecanol decanol, 4- (2-aminoethyl) -2-hydroxyethylbenzene, 3-aminomethyl-3,5,5-trimethylcyclohexanol; a primary amino-bearing derivatives of glycols such as diethylene glycol, dipropylene glycol, dibutylene glycol and higher oli
- aliphatic mercaptoamines such as 2-aminoethanethiol (cysteamine), 3-aminopropanethiol, 4-amino-1-butanethiol, 6-amino-1-hexanethiol, 8-amino-1-octanethiol, 10-amino-1-decanethiol, 12-amino -1-dodecanethiol; Aminothio sugars such as 2-amino-2-deoxy-6-thioglucose;
- - di- or polyhydric aliphatic amines which carry a secondary amino group in addition to one or two primary amino groups, such as N-methyl-1, 2-ethanediamine, N-ethyl-1, 2-ethanediamine, N-butyl-1, 2-ethanediamine , N-hexyl-1,2-ethanediamine, N- (2-ethylhexyl) -1, 2-ethanediamine, N-cyclohexyl-1,2-ethanediamine, 4-aminomethylpiperidine, 3- (4-aminobutyl) piperidine , N-aminoethylpiperazine, diethylenetriamine (DETA), bis-hexamethylenetriamine (BHMT); Di- and triamines from the cyanoethylation or cyanobutylation of primary mono- and diamines, for example N-methyl-1,3-propanediamine, N-ethyl-1,3-propanediamine, N-butyl-1,3-propanedia
- Particularly suitable aliphatic hydroxy and mercaptoamines are those in which the primary amino group of the hydroxyl or the mercapto group are separated by a chain of at least 5 atoms, or by a ring, such as in 5-amino-1-pentanol, 6 Amino-1-hexanol, 7-amino-1-heptanol, 8-amino-1-octanol, 10-amino-1-decanol, 12-amino-1-dodecanol, 4- (2-aminoethyl) -2 -hydroxyethylbenzene, 3-amino-methyl-3,5,5-trimethyl-cyclohexanol, 2- (2-aminoethoxy) -ethanol, triethylene glycol monoamine, ⁇ - (2-hydroxymethylethyl) - ⁇ - (2-aminomethylethoxy) poly (oxy (methyl-1,2-ethanediyl)), 3- (2-hydroxyethoxy) prop
- Preferred amines B are di- or polyhydric aliphatic amines which, in addition to one or two primary amino groups, carry a secondary amino group, in particular N-methyl-1,2-ethanediamine, N-ethyl-1,2-ethanediamine, N-cyclohexyl-1 , 2-ethanediamine, N-methyl-1,3-propanediamine, N-ethyl-1,3-propanediamine, N-butyl-1,3-propanediamine, N-cyclohexyl-1,3-propanediamine, 4-aminomethyl -piperidine, 3- (4-aminobutyl) piperidine, DETA, DPTA, BHMT and fatty diamines such as N-cocoalkyl-1,3-propanediamine, N-oleyl-1,3-propanediamine, N-soyalkyl-1,3 propanediamine and N-tallow alkyl-1,3-propanediamine.
- aliphatic hydroxy and mercaptoamines in which the primary amino group of the hydroxyl or the mercapto group are separated by a chain of at least 5 atoms, or by a ring, in particular 5-amino-1-pentanol, 6-amino 1-hexanol and higher homo- of these, 4- (2-aminoethyl) -2-hydroxyethylbenzene, 3-aminomethyl-3,5,5-trimethyl-cyclohexanol, 2- (2-aminoethoxy) ethanol, triethylene glycol monoamine and higher oligomers and polymers thereof, 3- (2-hydroxyethoxy) -propylamine, 3- (2- (2-hydroxyethoxy) -ethoxy) -propylamine, and 3- (6-hydroxyhexyloxy) -propylamine.
- the reaction between an aldehyde A and an amine B leads to hydroxyaldimines when amine B is a hydroxyamine; to mercaptoaldimines, when a mercaptoamine is used as amine B; to aminoaldimines, when as amine B, a di- or polyvalent amine, which in addition to one or more primary amino groups carries a secondary amino groups, is used; or to urea-aldimines when amine B is a trisubstituted urea bearing one or more primary amino groups.
- Preferred amine B are hydroxyamines and amines having one or two primary amino groups and one secondary amino group.
- the aldimines of the formula (XI) have a substituent NR 8 as substituent X.
- Such aldimines of the formula (XI) can be prepared by reacting at least one sterically hindered aliphatic aldehyde A of the formula (IV) with a divalent aliphatic primary amine C of the formula H 2 NR 4 -NH 2 in a first step to form an intermediate of the formula (VII) is reacted, which in addition to an aldimine group still contains a primary amino group, and this intermediate subsequently in a second step in an addition reaction with a Michael acceptor of the formula (VIII) in a ratio of the number of double bonds: number of NH 2 groups 1: 1 is implemented. This results in an aminoaldimine which, in addition to an aldimine group, also contains a secondary amino group.
- R 1 , R 2 , R 3 and R 4 have the same meaning as described for formula (I).
- aldimines of the formula (XI) in which X is the radical NR 8 and R 8 is a monovalent hydrocarbon radical of the formula (IX) or (IX ') are formed.
- R 9 is a radical which is selected from the group consisting of -COOR 13 , -CN, -NO 2 , -PO (OR 13 ) 2 , -SO 2 R 13 and -SO 2 OR 13 and R 10 represent a hydrogen atom or a radical selected from the group consisting of -R 13 , -COOR 13 and -CH 2 COOR 13 and R 11 and R 12 independently represent a hydrogen atom or a radical from the group consisting of -R 13 , -COOR 13 and -CN, where R 13 is in each case a monovalent hydrocarbon radical having 1 to 20 C atoms.
- the amine C is an aliphatic amine having two primary amino groups.
- Suitable amines C are aliphatic diamines such as ethylenediamine, 1,2- and 1,3-propanediamine, 2-methyl-1,2-propanediamine, 2,2-dimethyl-1,3-propanediamine, 1, 3 and 1,4-butanediamine, 1, 3- and 1,5-pentanediamine, 2-butyl-2-ethyl-1, 5-pentanediamine, 1,6-hexamethylenediamine (HMDA), 2,2,4- and 2, 4,4-trimethylhexamethylenediamine and mixtures thereof (TMD), 1, 7-heptanediamine, 1,8-octanediamine, 2,4-dimethyl-1,8-octanediamine, 4-aminomethyl-1,8-octanediamine, 1, 9- Nonanediamine, 2-methyl-1, 9-nonanediamine, 5-methyl-1, 9-nonanediamine, 1, 10-decanediamine, isodecanediamine, 1,11-undecanediamine, 1,12-dodecanediamine
- diamines in which the primary amino groups are separated by a chain of at least 5 atoms, or by a ring, in particular 1, 5-diamino-2-methylpentane, 1, 6-hexamethylenediamine, 2,2,4- and 2 , 4,4-trimethylhexamethylenediamine and mixtures thereof, 1, 10-decanediamine, 1, 12-dodecanediamine, 1, 3 and 1, 4-diaminocyclohexane, bis (4-aminocyclohexyl) methane, bis (4- amino-3-methylcyclohexyl) methane, 1-amino-3-aminomethyl-3,5,5-thmethylcyclohexane, 1, 3, and 1, 4-bis (aminomethyl) cyclohexane, 2.5 (2.6) - Bis- (aminomethyl) -bicyclo [2.2.1] heptane, 3 (4), 8 (9) -bis (aminomethyl) -tricyclo [5.2.1.0 2 ' 6
- Suitable Michael acceptors of the formula (VIII) are maleic or fumaric diesters, such as dimethyl maleate, diethyl maleate, dibutyl maleate, diethyl fumarate; Citraconic diesters such as dimethyl citraconate; Acrylic or methacrylic acid esters such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, l-auryl (meth) acrylate, stearyl (meth) acrylate, tetrahydrofuryl (meth) acrylate, isobornyl (meth) acrylate; Itaconic diesters such as dimethyl itaconate; Cinnamic acid esters such as methyl cinnamate; Vinylphosphonklarediester such as dimethyl vinylphosphonate; Vinylsulfonic acid esters, in particular vinylsulfonic acid aryl esters; vinyl sulfones; Vinylnitriles such as
- the reaction of the aldehyde A with the amine C to the intermediate of the formula (VII) is carried out in a condensation reaction with elimination of water, as described above for the reaction of the aldehyde A with the amine B.
- the stoichiometry between the aldehyde A and the amine C is chosen so that 1 mol of aldehyde A for 1 mol of amine C are used.
- a solvent-free preparation process is preferred in which the water formed during the condensation is removed from the reaction mixture by applying a vacuum.
- the reaction of the intermediate of the formula (VII) with the Michael acceptor of the formula (VIII) is carried out, for example, by mixing the intermediate with a stoichiometric or slightly more than stoichiometric amount of the Michael acceptor of the formula (VIII) and mixing Temperatures of 20 to 110 0 C until complete conversion of the intermediate to the aldimine of the formula (Xl) is heated.
- the reaction is preferably carried out without the use of solvents.
- the aldimines of formula (XI) may optionally be in equilibrium with cyclic forms as exemplified in formula (X).
- These cyclic forms in the case of aminoaldimines are cyclic aminals, for example imidazolidines or tetrahydropyrimidines; in the case of hydroxyaldehydes, cyclic aminoacetals, for example oxazolidines or tetrahydrooxazines; in the case of mercaptoaldimines, cyclic thioaminals, for example thiazolidines or tetrahydrothiazines.
- R 1 , R 2 , R 3 , R 4 and X have the same meaning as described for formula (I).
- most aldimines of the formula (XI) do not tend to cyclise.
- aminoaldimines can be shown by IR and NMR spectroscopic methods that these compounds predominantly in the open-chain, so the aldimine form, while the cyclic, ie the aminal form, does not occur or only in traces. This is in contrast to the behavior of the prior art aminoaldimines, as described, for example, in US 4,404,379 and US 6,136,942: namely, those are mainly in the cycloaminal form.
- hydroxy and mercaptoamines in which the primary amino group of the hydroxy or the mercapto group are separated by a chain of at least 5 atoms, or by a ring, show little cyclization.
- the substantial absence of cyclic structures in the aldimines of the formula (XI) is to be regarded as an advantage, in particular with regard to their use in isocyanate-containing compositions, since the aldimines are thereby largely free of those in aminals, oxazolidines and
- the aldimines of the formula (XI) are odorless. They are stable under suitable conditions, in particular with the exclusion of moisture. Upon entry of moisture, the aldimine groups of aldimines can formally hydrolyze via intermediates into amino groups releasing the corresponding aldehyde A used to make the aldimine. Since this hydrolysis reaction is reversible and the chemical equilibrium lies clearly on the aldimine side, it can be assumed that in the absence of amine-reactive groups only a part of the aldimine groups will be partially or completely hydrolyzed.
- a polyurethane polymer D of the formula (I) which is solid at room temperature and has an isocyanate group-containing polyurethane polymer D of the formula (XII) which is solid at room temperature is suitable as a polyurethane polymer D for preparing a room temperature solid, aldimine-containing polyurethane polymer.
- Particularly suitable diols for the preparation of a polyurethane polymer D are polyether diols, polyester diols and polycarbonatediols, and also mixtures of these diols.
- polyetherdiols also called polyoxyalkylenediols
- polyoxyalkylenediols are those which are polymerization products of ethylene oxide, 1,2-propylene oxide, 1,2- or 2,3-butylene oxide, tetrahydrofuran or mixtures thereof, possibly polymerized with the aid of a starter molecule having two active hydrogen atoms such as water, ammonia or compounds having two OH or NH groups such as 1, 2-ethanediol, 1, 2- and 1, 3-propanediol, neopentyl glycol, diethylene glycol, triethylene glycol, the isomeric dipropylene glycols and tripropylene glycols, the isomeric butanediols, Pentanediols, hexanediols, heptanediols, octanediols, nonanediols, decanediols, undecan
- Both polyoxyalkylene diols having a low degree of unsaturation (measured according to ASTM D-2849-69 and expressed in milliequivalents of unsaturation per gram of diol (mEq / g)) prepared, for example, by means of so-called double metal cyanide complex catalysts (DMC catalysts) can be used ), as well as polyoxyalkylene diols having a higher degree of unsaturation, prepared for example with the aid of anionic catalysts such as NaOH, KOH or alkali metal alkoxides.
- Particularly suitable polyether diols are polyoxyalkylene diols, in particular polyoxyethylene diols.
- polyoxyalkylenediols having a degree of unsaturation lower than 0.02 meq / g and having a molecular weight in the range from 1000 to 30,000 g / mol, and also polyoxypropylenediols having a molecular weight of from 400 to 8,000 g / mol.
- so-called "EO-endcapped” (ethylene oxide-endcapped) polyoxypropylene diols being special polyoxypropylene-polyoxyethylene diols obtained, for example, by alkoxylating pure polyoxypropylene diols with ethylene oxide after completion of the polypropoxylation and thereby having primary hydroxyl groups.
- Molecular weight 'or' molar weight ' is understood in the present document always the molecular weight average M n .
- polyether diols are those with a
- polyethers are sold under the trade name Acclaim® by Bayer.
- polyester diols are those which are prepared from dihydric alcohols, for example 1,2-ethanediol, diethylene glycol, 1,2-propanediol, dipropylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, Neopentyl glycol, or mixtures of the aforementioned alcohols, with organic dicarboxylic acids or their anhydrides or esters, such as succinic, glutaric, adipic, pimelic, suberic, azelaic, sebacic, dodecanedicarboxylic, maleic, fumaric, phthalic, isophthalic, terephthalic and hexahydrophthalic or mixtures of the foregoing Acids, and polyester diols from lactones, such as ⁇ -caprolactone.
- dihydric alcohols for example 1,2-ethanediol, diethylene glycol, 1,2-propan
- polyesterdiols are polyesterdiols of adipic acid, azelaic acid, sebacic acid or dodecanedicarboxylic acid as dicarboxylic acid and of hexanediol or neopentyl glycol as dihydric alcohol.
- the polyester diols preferably have a molecular weight of from 1000 to 15O00 g / mol, in particular from 1500 to 8000 g / mol, preferably from 1700 to 5500 g / mol.
- Semi-crystalline, crystalline and amorphous polyester diols in the form of adipic acid / hexanediol polyester, azelaic acid / hexanediol polyester, and dodecanedicarboxylic acid, which are liquid at room temperature, are particularly suitable.
- Suitable liquid at room temperature polyester diols are not far below established from room temperature, for example at temperatures between 0 0 C and 25 0 C.
- Suitable polycarbonate diols are those which are obtainable by reacting, for example, the abovementioned dihydric alcohols used to form the polyester diols with dialkyl carbonates, diaryl carbonates or phosgene.
- Preferred diols are polyesterdiols and polycarbonatediols.
- polyesterdiols in particular a mixture of an amorphous and a crystalline or partially crystalline polyesterdiol, or a mixture of a liquid at room temperature and a crystalline or partially crystalline polyesterdiol, or a mixture of a partially crystalline and a crystalline polyesterdiol. If a liquid at room temperature polyester diol is used, this is not far below room temperature, in particular at a temperature between 0 0 C and 25 ° C.
- diisocyanates for example the following, can be used as diisocyanates for the preparation of a polyurethane polymer D containing isocyanate groups.
- the preparation of the polyurethane polymer D is carried out in a known manner directly from the diisocyanates and the diols, or by stepwise adduction, as they are known as chain extension reactions.
- the polyurethane polymer D has isocyanate groups and is solid at room temperature.
- the polyurethane polymer D is prepared via a reaction of at least one diisocyanate and at least one diol, wherein the isocyanate groups are present in a stoichiometric excess over the hydroxyl groups.
- the ratio between isocyanate and hydroxyl groups in short "NCO / OH ratio" called, 1.3 to 2.5, in particular 1.5 to 2.2.
- the polyurethane polymer D has a molecular weight of preferably more than 1000 g / mol, in particular such between 1200 and 50,000 g / mol, preferably between 2,000 and 30,000 g / mol. Furthermore, the polyurethane polymer D (p + q) has isocyanate groups, where (p + q) is 2.
- the diols used to prepare the polyurethane polymer D are generally of technical quality and thus represent mixtures of oligomers of different chain length, monomer composition and OH functionality.
- technical diols, in particular polyether diols due to the preparation process, in addition to a predominant proportion of diols also monols, so that their average OH functionality is not exactly 2, but slightly less than 2.
- technical diols, for example by the Concomitant use of trifunctional starters, monomers or crosslinkers, in addition to diols and monols also contain small proportions of triols, so that their average OH functionality may also be slightly higher than 2.
- the reaction between the aldimine of the formula (XI) and the polyurethane polymer D for the aldimine-containing polyurethane polymer of the formula (I) is carried out under known conditions typically used for reactions between the reactive groups involved in the reaction, for example at a temperature of 20 0 C to 100 0 C. It is preferably carried out at a temperature at which the polyurethane polymer D is liquid.
- the reaction is carried out using a solvent or preferably solvent-free.
- auxiliaries such as catalysts, initiators or stabilizers may be included.
- the reaction is preferably carried out for aminoaldimines without catalyst, while for hydroxy, mercapto and urea aldehydes the use of a catalyst, as used for the urethanization reaction between isocyanates and alcohols, for example an organotin compound, a bismuth complex, a tertiary amine compound or a combination of such catalysts may be useful.
- a catalyst as used for the urethanization reaction between isocyanates and alcohols, for example an organotin compound, a bismuth complex, a tertiary amine compound or a combination of such catalysts may be useful.
- the addition reaction between the aldimine of the formula (XI) and the polyurethane polymer D is carried out substoichiometrically, ie with less than one mole equivalent of active hydrogen of the aldimine (XI) to one mole equivalent of isocyanate groups of the polyurethane polymer D.
- Formula (I) are those of the formulas (I a), (I b) and (I c),
- R 1 , R 2 , R 3 , R 4 and R 5 have the meanings already mentioned, and R 8 is a monovalent hydrocarbon radical having 1 to 20 C-
- Atoms which optionally has at least one carboxylic ester, nitrile, nitro, phosphonic acid ester, sulfonic or sulfonic acid ester group.
- aldimine-containing polyurethane polymers of the formula (I) are, like the aldimines of the formula (XI), odorless. They are stable under suitable conditions, in particular with the exclusion of moisture.
- crosslinking or “crosslinking reaction” refer to the process of formation of high molecular weight polyurethane plastics caused by the chemical reaction of isocyanate groups, even if predominantly chains are formed.
- compositions described may optionally contain an isocyanate group-containing polyurethane polymer P.
- polyurethane polymer D is preferably a polyurethane polymer D, as has already been described for the preparation of an aldimine-containing polyurethane polymer of the formula (I), ie a solid at room temperature, isocyanate-containing polyurethane polymer.
- the aldimine groups present in the composition are typically present at a slightly superstoichimetric, stoichiometric or substoichiometric ratio relative to the isocyanate groups present in the composition.
- the ratio between aldimine groups and isocyanate groups is advantageously 0.3 to 1.1, in particular 0.5 to 1.05.
- aldimine-containing polyurethane polymer of the formula (I) has no isocyanate groups, ie q in formula (I) is zero, or if the aldimine group-containing polyurethane polymer of the formula (I) has two or more aldimine groups, that is, for example, a compound of
- the composition contains a mandatory Isocyanate group-containing polyurethane polymer P.
- a suitable ratio of aldimine groups to isocyanate groups is achieved, as shown above.
- the aldimine-containing polyurethane polymer of the formula (I) has only one aldimine group and one isocyanate group, that is, for example, a compound of the formula (I a) or (I b)
- the presence of a polyurethane polymer P is optional, since in this case also a Composition without polyurethane polymer P has a suitable ratio of aldimine groups to isocyanate groups.
- the composition described has a surprisingly low content of monomeric diisocyanates. This is particularly advantageous for use as a hotmelt adhesive, since monomeric diisocyanates outgas during application and can pose a health burden for the processor as irritating, sensitizing or toxic substances.
- the content of monomeric diisocyanates is very low, especially when the polyurethane polymer composition mainly contains a polyurethane polymer of the formula (I) which is obtained by the substoichiometric reaction of a polyurethane polymer D with an aldimine of the formula (XI), in particular less than one half molar equivalent active hydrogen of aldimine (XI) to one molar equivalent of isocyanate groups of polyurethane polymer D.
- compositions prepared in this way have the lowest content of monomeric diisocyanates.
- the composition described preferably has a content of monomeric diisocyanates of ⁇ 0.3% by weight, more preferably of ⁇ 0.2% by weight, and in particular of ⁇ 0.1% by weight.
- the composition described optionally contains further constituents, as commonly used in the prior art, in particular:
- Non-reactive thermoplastic polymers such as homo- or copolymers of unsaturated monomers, in particular from
- a group comprising ethylene, propylene, butylene, isobutylene, isoprene, vinyl acetate or higher esters thereof, and (meth) acrylate, wherein ethylene-vinyl acetate copolymers (EVA), atactic poly- ⁇ -olefins (APAO), polypropylenes (PP) and polyethylenes (PE ) are particularly suitable; Catalysts for the reaction of the aldimine groups and / or the
- Isocyanate groups in particular acids or compounds hydrolyzable to acids, for example organic carboxylic acids such as phthalic anhydride or hexahydrophthalic anhydride, silyl esters of organic carboxylic acids, organic sulfonic acids such as methanesulfonic acid, p-toluenesulfonic acid or 4-dodecylbenzenesulfonic acid, or other organic or inorganic acids;
- Metal compounds for example tin compounds such as dibutyltin diacetate, dibutyltin dilaurate, dibutyltin distearate, dibutyltin diacetylacetonate, dioctyltin dilaurate, dibutyltin dichloride and dibutyltin oxide, tin (II) carboxylates, stannoxanes such as laurylstannoxane, bismuth compounds such as bismuth (III) octoate, bismut
- Diazabicyclo [5.4.0] undec-7-ene Combinations of said catalysts, in particular mixtures of acids and metal compounds, or of metal compounds and tertiary amines;
- Reactive diluents or crosslinkers for example oligomers or polymers of diisocyanates such as MDI, PMDI, TDI, HDI, 1,1-dodecamethylene diisocyanate, cyclohexane-1,3,3 or 1,4-diisocyanate, IPDI, perhydro-2,4'-diisocyanate and - 4,4'-diphenylmethane diisocyanate (Hi 2 MDI), 1, 3- and 1, 4-tetramethylxylylene diisocyanate, in particular isocyanurates, carbodiimides, uretonimines, biurets, allophanates and iminooxadiazinediones of said diisocyanates, adducts of diisocyanates with short-chain polyols, Adipic acid dihydrazide and other dihydrazides, as well as blocked hardeners in the form of polyaldimines, polyketimines, ox
- Fillers plasticizers, adhesion promoters, in particular silane-containing compounds, UV absorbers, UV or heat stabilizers, antioxidants, flame retardants, optical brighteners,
- Pigments, dyes and drying agents, and other substances commonly used in isocyanate-containing compositions are Pigments, dyes and drying agents, and other substances commonly used in isocyanate-containing compositions.
- the composition described is free of carbon black.
- the composition described is completely free of fillers.
- Such a composition is particularly suitable for the bonding of substrates, in which at least one of the substrates to be bonded is transparent or translucent.
- composition described is prepared and stored in the absence of moisture.
- a suitable climate-proof packaging or arrangement such as in a keg, bag or cartridge, it has excellent storage stability.
- storage-stable and “storage stability” in the context of a composition in the present document refers to the fact that the viscosity of the composition at the application temperature with suitable storage in the period considered not or at most so strong increases that the composition of the intended way remains usable.
- the adhesive is meltable, that is, in the Application temperature has a sufficiently low viscosity to be applied, and that it builds up as quickly as possible sufficient adhesive strength, even before the crosslinking reaction is complete with humidity (initial strength). It has been found that the compositions described have in the conventional hot melt adhesives application temperatures ranging from 85 0 C to 200 0 C, typically 120 0 C to 160 0 C, a well-manageable viscosity, and that they sufficiently rapidly on cooling, a good Build up adhesive strength.
- the moisture needed for chemical crosslinking can either come from the air (humidity), or else the composition can be contacted with a water-containing component, for example by brushing or spraying, or it can be water-applied to the composition upon application containing component may be added, for example in the form of a water-containing paste, which, for example via a static mixer, is mixed.
- compositions described exhibit a greatly reduced tendency to form bubbles when crosslinked with moisture, since little or no carbon dioxide is formed in the crosslinking due to the presence of aldimine groups, depending on the stoichiometry.
- the composition described is used as a reactive polyurethane hotmelt adhesive, PUR-RHM for short.
- Such a bond comprises the steps of i) heating a composition as described above to a temperature between 85 0 C and 200 0 C, in particular between 120 0 C and 160 0 C; ii) applying the heated composition to a substrate
- Step iii) is typically followed by a step iv) of chemically crosslinking the composition with moisture.
- the person skilled in the art understands that the crosslinking reaction, depending on factors such as the composition used, the substrates, the temperature, the ambient humidity and the adhesive geometry, can already begin during the bonding. However, the majority of crosslinking generally occurs after bonding.
- the substrates S1 and / or S2 can be pretreated prior to applying the composition.
- Such pretreatments include in particular physical and / or chemical cleaning and activation processes, for example grinding, sandblasting, brushing, corona treatment, plasma treatment, flaming, etching or the like, or treatment with cleaners or solvents or the application of a primer, a primer solution or a primer.
- the substrates S1 and S2 may be a variety of materials.
- plastics organic materials such as leather, fabrics, paper, wood, resin-bonded wood materials, resin-Texil composites, glass, porcelain, ceramics and metals and metal alloys, in particular painted or powder-coated metals and metal alloys are suitable .
- plastics are polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene copolymers (ABS), SMC (sheet molding composites), polycarbonate (PC), polyamide (PA), polyesters, polyoxymethylene (POM), polyolefins (PO ), in particular polyethylene (PE), polypropylene (PP), ethylene / propylene copolymers (EPM) and ethylene / propylene-diene terpolymers (EPDM), preferably plasma-corona or flame-treated PP or PE.
- PVC polyvinyl chloride
- ABS acrylonitrile-butadiene-styrene copolymers
- SMC sheet molding composites
- PC polycarbonate
- PA poly
- the substrates S1 and S2 are transparent materials, in particular transparent plastic films.
- Another preferred transparent material is glass, especially in the form of a disk.
- the thickness of the adhesive layer is typically 10 microns or more.
- the bond thickness is between 10 microns and 20 millimeters, especially between 80 microns and 500 microns.
- crosslinking is usually very slow due to slow water diffusion.
- the described composition is used in particular in an industrial manufacturing process.
- composition described is suitable as
- PUR-RHM for gluing in which the gluing point is visible.
- it is particularly suitable for the bonding of glass, in particular in vehicle and window construction.
- it is particularly suitable for the gluing of transparent packaging.
- the bonding process results in articles.
- Such articles are on the one hand, in particular articles from the transport, furniture or textile industry. The automotive industry is preferred as a means of transport.
- Exemplary such articles are water or land vehicles such as automobiles, buses, trucks, trains or ships; Automotive interior trim parts, such as headliner, sun visor, instrument panel, door side panel, parcel shelf, and the like; Wood fiber materials from the shower and bath area; Furniture decorative films, membrane films with textiles such as cotton, polyester films in the clothing sector or textiles with foams for automotive equipment.
- such articles are in particular articles from the packaging industry.
- such an article is a transparent packaging.
- compositions described comprising a) at least one room temperature solid aldimine group-containing polyurethane polymer of the formula (I), and b) optionally at least one isocyanate group-containing polyurethane polymer P, have a number of advantages over the prior art when used as reactive hotmelt adhesive compositions Technology on.
- hot-melt adhesive compositions based on commercially available, readily available diisocyanates, such as 4,4'-MDI or IPDI, with extremely low monomeric diisocyanate content are available.
- the low content of monomeric diisocyanates is achieved by the reaction of polyurethane polymers D with aldimines of the formula (XI), where in the Aldimines contained active hydrogen apparently preferentially reacted with the present in polyurethane polymer D monomeric diisocyanates.
- the compositions described when used as a hot-melt adhesive, have a high crosslinking speed, even if they contain only slowly reacting aliphatic isocyanate groups, such as those of IPDI or Hi 2 MDI.
- aliphatic isocyanate groups such as those of IPDI or Hi 2 MDI.
- Prior art pure aliphatic diisocyanate-based PUR-RHMs generally have such low cure rate that they are not useful for most applications.
- the compositions described show a greatly reduced tendency to form bubbles, because in the crosslinking reaction of isocyanate groups with hydrolyzing aldimine groups no carbon dioxide is formed, in contrast to crosslinking of isocyanate groups with moisture.
- compositions described when used as a hotmelt adhesive, exhibit similarly good properties as the prior art systems, namely rapid bond strength, good heat resistance, and high ultimate strength with good ductility, the final mechanical properties being very broad Adjust the range to the needs of a gluing application.
- the invention relates to a process for reducing the content of monomeric diisocyanates in isocyanate group-containing polyurethane polymers or in compositions containing isocyanate group-containing polyurethane polymers by reacting the isocyanate group-containing polyurethane polymers with at least one aldimine of the formula (XI).
- amine content The total content of aldimine groups and free amino groups in the compounds prepared ("amine content") was determined by titration (with 0.1 N HCIO 4 in glacial acetic acid, against crystal violet) and is always given in mmol NH 2 / g (even if it is not only primary amino groups are involved).
- the content of monomeric diisocyanates was determined by means of HPLC (detection via photodiode array) and is given in% by weight based on the total composition.
- the viscosity was measured at the temperature indicated in each case with a Brookfield viscometer with spindle No. 27 and 10 revolutions per minute.
- the open time was determined as follows: The cooperation reduction was at a temperature of 150 0 C in a thickness of 500 microns on silicone-coated paper mounted. This test specimen was then placed on a surface temperature-warm substrate. As soon as a piece of paper that is pressed lightly onto the adhesive separates from the adhesive
- the tensile strength and the elongation at break were based on
- DIN 53504 determined on test specimens with a layer thickness of 500 microns and the dimensions 120 mm x 20 mm.
- the films for preparing the test specimens were applied at an adhesive temperature of 140 0 C and then stored for 2 weeks at a relative 23 0 C and 50% humidity.
- Dynacoll ® 7250 liquid polyester diol, OH number 21 mg KOH / g; Degussa
- Dynacoll ® 7360 crystalline polyester diol, OH number 30 mg KOH / g, melting point of 55 0 C; Degussa
- 4,4'-diphenylmethane diisocyanate 4,4'-MDI; Desmodur ® 44 MC L, Bayer
- the reaction product had a titrimetrically determined content of free isocyanate groups of 1.5% by weight and was solid at room temperature.
- Polyurethane Polymer D2 The same diol mixture as in the polyurethane polymer D1 was used with
- the same diol mixture as in the polyurethane polymer D1 was charged with 107 g of 4,4'-dicyclohexylmethane diisocyanate (H 12 MDI; Desmodur ® W, Bayer) were reacted by a known method at 100 0 C to give an NCO-terminated polyurethane polymer.
- the reaction product had a titrimetrically determined content of free isocyanate groups of 1.5% by weight and was solid at room temperature.
- the same diol mixture as in the polyurethane polymer D1 was charged with 90.4 g of isophorone diisocyanate; reacted by a known method at 100 0 C to give an NCO-terminated polyurethane polymer (IPDI Vestanat ® IPDI, Degussa).
- the reaction product had a titrimetrically determined content of free isocyanate groups of 1.5% by weight and was solid at room temperature.
- Aldimine 3 were homogeneously at a temperature of 130 0 C and the mixture left for 1 hour at 130 0 C.
- the formed aldimine and isocyanate groups-containing polyurethane polymer was at room temperature under
- Example 5 was carried out as Example 1, wherein instead of the polyurethane polymer D1, the polyurethane polymer D2 was used.
- Example 6 was carried out as Example 2, wherein instead of the polyurethane polymer D1, the polyurethane polymer D2 was used.
- Example 7 was carried out as Example 3, using instead of
- Polyurethane polymer D1 the polyurethane polymer D2 was used.
- Example 9 was carried out as Example 1, wherein instead of the polyurethane polymer D1, the polyurethane polymer D3 was used.
- Example 10 was carried out as Example 2, wherein instead of the polyurethane polymer D1, the polyurethane polymer D3 was used.
- Example 11 was carried out as Example 2, wherein instead of the polyurethane polymer D1, the polyurethane polymer D3 was used.
- Example 11 was carried out as Example 3, wherein instead of the polyurethane polymer D1, the polyurethane polymer D3 was used.
- Example 13 was carried out as Example 1, using instead of
- Polyurethane polymer D1 the polyurethane polymer D4 was used.
- Example 14 was carried out as Example 2, wherein instead of the polyurethane polymer D1, the polyurethane polymer D4 was used.
- Example 15 was carried out as Example 3, wherein instead of the polyurethane polymer D1, the polyurethane polymer D4 was used.
- compositions according to the invention have significantly lower contents of monomeric diisocyanates than the corresponding prior art compositions without aldimine groups, their applicability being ensured as reactive hot-melt adhesives.
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Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06806899A EP1937740A1 (de) | 2005-09-30 | 2006-09-29 | Reaktive polyurethan-heissschmelzklebstoffe mit niedrigem isocyanat-monomergehalt |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05109112A EP1770107A1 (de) | 2005-09-30 | 2005-09-30 | Feuchtigkeitshärtende Polyurethanzusammensetzung |
| PCT/EP2006/066929 WO2007036575A1 (de) | 2005-09-30 | 2006-09-29 | Reaktive polyurethan-heissschmelzklebstoffe mit niedrigem isocyanat-monomergehalt |
| EP06806899A EP1937740A1 (de) | 2005-09-30 | 2006-09-29 | Reaktive polyurethan-heissschmelzklebstoffe mit niedrigem isocyanat-monomergehalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1937740A1 true EP1937740A1 (de) | 2008-07-02 |
Family
ID=35788013
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05109112A Withdrawn EP1770107A1 (de) | 2005-09-30 | 2005-09-30 | Feuchtigkeitshärtende Polyurethanzusammensetzung |
| EP06819065A Not-in-force EP1937741B1 (de) | 2005-09-30 | 2006-09-29 | Feuchtigkeitshärtende polyurethanzusammensetzungen enthaltend aldimin-haltige verbindungen |
| EP06806899A Withdrawn EP1937740A1 (de) | 2005-09-30 | 2006-09-29 | Reaktive polyurethan-heissschmelzklebstoffe mit niedrigem isocyanat-monomergehalt |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05109112A Withdrawn EP1770107A1 (de) | 2005-09-30 | 2005-09-30 | Feuchtigkeitshärtende Polyurethanzusammensetzung |
| EP06819065A Not-in-force EP1937741B1 (de) | 2005-09-30 | 2006-09-29 | Feuchtigkeitshärtende polyurethanzusammensetzungen enthaltend aldimin-haltige verbindungen |
Country Status (14)
| Country | Link |
|---|---|
| US (2) | US8088244B2 (de) |
| EP (3) | EP1770107A1 (de) |
| JP (2) | JP5197370B2 (de) |
| KR (2) | KR20080055978A (de) |
| CN (2) | CN101309947B (de) |
| AT (1) | ATE486900T1 (de) |
| BR (2) | BRPI0616775B8 (de) |
| CA (2) | CA2628327A1 (de) |
| DE (1) | DE502006008247D1 (de) |
| DK (1) | DK1937741T3 (de) |
| ES (1) | ES2355273T3 (de) |
| RU (2) | RU2410399C2 (de) |
| WO (2) | WO2007036575A1 (de) |
| ZA (2) | ZA200803687B (de) |
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| EP1770107A1 (de) * | 2005-09-30 | 2007-04-04 | Sika Technology AG | Feuchtigkeitshärtende Polyurethanzusammensetzung |
| JP2008004691A (ja) * | 2006-06-21 | 2008-01-10 | Toppan Printing Co Ltd | 太陽電池裏面封止用シート |
| EP1918314A1 (de) | 2006-10-31 | 2008-05-07 | Sika Technology AG | Polyurethanzusammensetzung mit guter Anfangsfestigkeit |
| DE502006004082D1 (de) * | 2006-11-17 | 2009-08-06 | Sika Technology Ag | Polyaldimin enthaltende feuchtigkeitshärtende Heissschmelzklebstoff-Zusammensetzung |
| EP1975186A1 (de) * | 2007-03-27 | 2008-10-01 | Sika Technology AG | Isocyanat- und Aldiminogruppen aufweisende Zusammensetzung mit niedrigem Isocyanat-Monomergehalt |
| EP1975189A1 (de) * | 2007-03-27 | 2008-10-01 | Sika Technology AG | Polyurethanzusammensetzung enthaltend asymmetrisches Dialdimin |
| EP1975190A1 (de) * | 2007-03-28 | 2008-10-01 | Sika Technology AG | Aldimine mit aktivem Wasserstoff aufweisenden Reaktivgruppen |
| EP1975187A1 (de) * | 2007-03-28 | 2008-10-01 | Sika Technology AG | Verfahren zur Herstellung von Polyurethanzusammensetzungen mit niedrigem Isocyanat-Monomergehalt |
| ES2348625T3 (es) | 2007-05-11 | 2010-12-09 | Sika Technology Ag | Cuerpos compuestos estratificados unidos a través de un pegamento de fusión en caliente de poliuretano, así como procedimiento para pegar plásticos con contenido en plastificante. |
| EP2031001A1 (de) * | 2007-08-31 | 2009-03-04 | Sika Technology AG | Verwendung einer Heissschmelzklebstoffzusammensetzung als Primer |
| US20090068479A1 (en) * | 2007-09-11 | 2009-03-12 | Sika Technology Ag | Moisture-reactive adhesive compositions with very low temperature dependency of the shear modulus |
| EP2036931A1 (de) * | 2007-09-11 | 2009-03-18 | Sika Technology AG | Feuchtigkeitsreaktive Klebstoffzusammensetzungen mit sehr geringer Temperaturabhängigkeit des Schubmoduls |
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| DE502008002085D1 (de) * | 2008-07-14 | 2011-02-03 | Sika Technology Ag | Amorphes Polyurethanpolymer und dessen Verwendung in Heissschmelzklebstoffen |
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| WO2017102888A1 (de) * | 2015-12-15 | 2017-06-22 | Lisa Dräxlmaier GmbH | Verfahren zum beschichten eines kunststoffbauteils mit einem schmelzklebstoff |
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| JP7421638B2 (ja) * | 2019-08-30 | 2024-01-24 | ダウ グローバル テクノロジーズ エルエルシー | ポリエーテルポリオールおよびポリウレタン発泡体のアルデヒド排出量を減少させるための方法 |
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-
2005
- 2005-09-30 EP EP05109112A patent/EP1770107A1/de not_active Withdrawn
-
2006
- 2006-09-29 DE DE502006008247T patent/DE502006008247D1/de active Active
- 2006-09-29 BR BRPI0616775A patent/BRPI0616775B8/pt not_active IP Right Cessation
- 2006-09-29 EP EP06819065A patent/EP1937741B1/de not_active Not-in-force
- 2006-09-29 RU RU2008117165/04A patent/RU2410399C2/ru not_active IP Right Cessation
- 2006-09-29 CN CN2006800429379A patent/CN101309947B/zh not_active Expired - Fee Related
- 2006-09-29 DK DK06819065.1T patent/DK1937741T3/da active
- 2006-09-29 CA CA002628327A patent/CA2628327A1/en not_active Abandoned
- 2006-09-29 RU RU2008117166/04A patent/RU2408611C2/ru not_active IP Right Cessation
- 2006-09-29 KR KR1020087010607A patent/KR20080055978A/ko not_active Withdrawn
- 2006-09-29 US US11/992,130 patent/US8088244B2/en not_active Expired - Fee Related
- 2006-09-29 WO PCT/EP2006/066929 patent/WO2007036575A1/de not_active Ceased
- 2006-09-29 KR KR1020087010606A patent/KR20080063814A/ko not_active Withdrawn
- 2006-09-29 AT AT06819065T patent/ATE486900T1/de active
- 2006-09-29 EP EP06806899A patent/EP1937740A1/de not_active Withdrawn
- 2006-09-29 JP JP2008532801A patent/JP5197370B2/ja not_active Expired - Fee Related
- 2006-09-29 CA CA002628329A patent/CA2628329A1/en not_active Abandoned
- 2006-09-29 JP JP2008532800A patent/JP5193047B2/ja not_active Expired - Fee Related
- 2006-09-29 ZA ZA200803687A patent/ZA200803687B/xx unknown
- 2006-09-29 US US11/992,120 patent/US7741425B2/en not_active Expired - Fee Related
- 2006-09-29 BR BRPI0616635-0A patent/BRPI0616635A2/pt not_active IP Right Cessation
- 2006-09-29 ES ES06819065T patent/ES2355273T3/es active Active
- 2006-09-29 WO PCT/EP2006/066927 patent/WO2007036574A1/de not_active Ceased
- 2006-09-29 CN CN2006800428978A patent/CN101309946B/zh not_active Expired - Fee Related
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2008
- 2008-04-25 ZA ZA200803689A patent/ZA200803689B/xx unknown
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