JP2021169551A - Coolant composition for electric vehicles - Google Patents
Coolant composition for electric vehicles Download PDFInfo
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- JP2021169551A JP2021169551A JP2020072580A JP2020072580A JP2021169551A JP 2021169551 A JP2021169551 A JP 2021169551A JP 2020072580 A JP2020072580 A JP 2020072580A JP 2020072580 A JP2020072580 A JP 2020072580A JP 2021169551 A JP2021169551 A JP 2021169551A
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- coolant composition
- benzotriazole
- electric vehicle
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- 239000002826 coolant Substances 0.000 title claims abstract description 46
- 239000000203 mixture Substances 0.000 title claims abstract description 38
- -1 Benzotriazole compound Chemical class 0.000 claims abstract description 26
- 239000012964 benzotriazole Substances 0.000 claims abstract description 18
- 150000003961 organosilicon compounds Chemical class 0.000 claims description 16
- 125000004432 carbon atom Chemical group C* 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 9
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 7
- 125000002947 alkylene group Chemical group 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 125000003277 amino group Chemical group 0.000 claims description 3
- 150000002334 glycols Chemical class 0.000 claims description 3
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 5
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 150000003377 silicon compounds Chemical class 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 description 8
- 229910000679 solder Inorganic materials 0.000 description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- BBMCTIGTTCKYKF-UHFFFAOYSA-N 1-heptanol Chemical compound CCCCCCCO BBMCTIGTTCKYKF-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- LRUDIIUSNGCQKF-UHFFFAOYSA-N 5-methyl-1H-benzotriazole Chemical compound C1=C(C)C=CC2=NNN=C21 LRUDIIUSNGCQKF-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 150000001565 benzotriazoles Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 2
- 125000001841 imino group Chemical group [H]N=* 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229960004063 propylene glycol Drugs 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 1
- 229940058015 1,3-butylene glycol Drugs 0.000 description 1
- ASOKPJOREAFHNY-UHFFFAOYSA-N 1-Hydroxybenzotriazole Chemical compound C1=CC=C2N(O)N=NC2=C1 ASOKPJOREAFHNY-UHFFFAOYSA-N 0.000 description 1
- ZHPSBMQVLQEIIC-UHFFFAOYSA-N 1-methoxybenzotriazole Chemical compound C1=CC=C2N(OC)N=NC2=C1 ZHPSBMQVLQEIIC-UHFFFAOYSA-N 0.000 description 1
- ZBJLUVHQIPUCPM-UHFFFAOYSA-N 1-phenylbenzotriazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2N=N1 ZBJLUVHQIPUCPM-UHFFFAOYSA-N 0.000 description 1
- XEZNGIUYQVAUSS-UHFFFAOYSA-N 18-crown-6 Chemical group C1COCCOCCOCCOCCOCCO1 XEZNGIUYQVAUSS-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- CZHBXDSQJOQIHE-UHFFFAOYSA-N 2-(benzotriazol-1-yl)ethane-1,1-diol Chemical compound C1=CC=C2N(CC(O)O)N=NC2=C1 CZHBXDSQJOQIHE-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- COBPKKZHLDDMTB-UHFFFAOYSA-N 2-[2-(2-butoxyethoxy)ethoxy]ethanol Chemical compound CCCCOCCOCCOCCO COBPKKZHLDDMTB-UHFFFAOYSA-N 0.000 description 1
- WFSMVVDJSNMRAR-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethanol Chemical compound CCOCCOCCOCCO WFSMVVDJSNMRAR-UHFFFAOYSA-N 0.000 description 1
- MXVMODFDROLTFD-UHFFFAOYSA-N 2-[2-[2-(2-butoxyethoxy)ethoxy]ethoxy]ethanol Chemical compound CCCCOCCOCCOCCOCCO MXVMODFDROLTFD-UHFFFAOYSA-N 0.000 description 1
- GTAKOUPXIUWZIA-UHFFFAOYSA-N 2-[2-[2-(2-ethoxyethoxy)ethoxy]ethoxy]ethanol Chemical compound CCOCCOCCOCCOCCO GTAKOUPXIUWZIA-UHFFFAOYSA-N 0.000 description 1
- ZUHDIDYOAZNPBV-UHFFFAOYSA-N 2-[2-hydroxyethyl-[(4-methylbenzotriazol-1-yl)methyl]amino]ethanol Chemical compound CC1=CC=CC2=C1N=NN2CN(CCO)CCO ZUHDIDYOAZNPBV-UHFFFAOYSA-N 0.000 description 1
- HHYPDQBCLQZKLI-UHFFFAOYSA-N 2-[2-hydroxyethyl-[(5-methylbenzotriazol-1-yl)methyl]amino]ethanol Chemical compound CC1=CC=C2N(CN(CCO)CCO)N=NC2=C1 HHYPDQBCLQZKLI-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- GUOVBFFLXKJFEE-UHFFFAOYSA-N 2h-benzotriazole-5-carboxylic acid Chemical compound C1=C(C(=O)O)C=CC2=NNN=C21 GUOVBFFLXKJFEE-UHFFFAOYSA-N 0.000 description 1
- SDXAWLJRERMRKF-UHFFFAOYSA-N 3,5-dimethyl-1h-pyrazole Chemical compound CC=1C=C(C)NN=1 SDXAWLJRERMRKF-UHFFFAOYSA-N 0.000 description 1
- WVIXTJQLKOLKTQ-UHFFFAOYSA-N 3-(benzotriazol-1-yl)propane-1,2-diol Chemical compound C1=CC=C2N(CC(O)CO)N=NC2=C1 WVIXTJQLKOLKTQ-UHFFFAOYSA-N 0.000 description 1
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- UJRRFYOOIAUSJA-UHFFFAOYSA-N 5-methylheptane-1,2,4-triol Chemical compound CCC(C)C(O)CC(O)CO UJRRFYOOIAUSJA-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- JCXKHYLLVKZPKE-UHFFFAOYSA-N benzotriazol-1-amine Chemical compound C1=CC=C2N(N)N=NC2=C1 JCXKHYLLVKZPKE-UHFFFAOYSA-N 0.000 description 1
- MXJIHEXYGRXHGP-UHFFFAOYSA-N benzotriazol-1-ylmethanol Chemical compound C1=CC=C2N(CO)N=NC2=C1 MXJIHEXYGRXHGP-UHFFFAOYSA-N 0.000 description 1
- 235000019437 butane-1,3-diol Nutrition 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000002704 decyl group Chemical group [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])* 0.000 description 1
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [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])* 0.000 description 1
- TUEYHEWXYWCDHA-UHFFFAOYSA-N ethyl 5-methylthiadiazole-4-carboxylate Chemical compound CCOC(=O)C=1N=NSC=1C TUEYHEWXYWCDHA-UHFFFAOYSA-N 0.000 description 1
- 229940093476 ethylene glycol Drugs 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000008040 ionic compounds Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000001421 myristyl 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])[H] 0.000 description 1
- XVHLHUNZWRKZPF-UHFFFAOYSA-N n-[(4-methylbenzotriazol-1-yl)methyl]-n-propan-2-ylpropan-2-amine Chemical compound C1=CC=C2N(CN(C(C)C)C(C)C)N=NC2=C1C XVHLHUNZWRKZPF-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 125000001400 nonyl 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])[H] 0.000 description 1
- 125000002347 octyl 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])[H] 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- 125000000913 palmityl 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])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 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
- 239000010959 steel Substances 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003509 tertiary alcohols Chemical class 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000002889 tridecyl 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])[H] 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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Abstract
Description
本発明は、電動車用冷却液組成物に関する。 The present invention relates to a coolant composition for an electric vehicle.
電気自動車やハイブリッドカーのように、大容量の電池を搭載する自動車には、電池を冷却するシステムが搭載され、そのシステム内に冷却液を循環させることにより、電池を冷却させることが必要とされている。
しかしながら、これらの冷却液は、冬季の不凍性及び絶縁性に優れることが必要とされる。特に、万が一電池内部と通電した際には、漏電や電極等間でのショートが発生することが懸念されるため、優れた絶縁性が要求される。
そのため、特許文献１に記載のように、多価アルコール、非イオン性界面活性剤及び第３級アルコールを含有することにより、絶縁性を備えた冷却液が、特許文献２に記載のように水、エチレングリコール及び特定のグリコールジアルキルエーテルを含有することにより、絶縁性を備えた冷却液が知られている。
Vehicles equipped with large-capacity batteries, such as electric vehicles and hybrid vehicles, are equipped with a system for cooling the batteries, and it is necessary to cool the batteries by circulating a coolant in the system. ing.
However, these coolants are required to have excellent antifreeze and insulating properties in winter. In particular, in the unlikely event that the inside of the battery is energized, there is a concern that electric leakage or a short circuit between electrodes or the like may occur, so excellent insulation is required.
Therefore, as described in Patent Document 1, a coolant having insulating properties by containing a polyhydric alcohol, a nonionic surfactant and a tertiary alcohol is water as described in Patent Document 2. , Ethylene glycol and certain glycol dialkyl ethers are known to provide insulating coolants.
冷却液を使用するにつれて、冷却液を循環させる回路の特に内面を腐食しないことにも留意すべきである。内面が腐食すると冷却液中のイオン性物質濃度が上昇して、絶縁性を毀損することになる。その結果、何らかのきっかけで、電池のみではなくモーター及びインバータ等の電気自動車やハイブリッドカーに必要な装置が漏電したり、冷却液が通電したりする可能性がある。
そのため、電動車用冷却液組成物として、電池、モーター、インバータ等の発熱する装置を冷却するために、不凍性と絶縁性だけではなく、冷却液を循環させる回路内を含めて防錆効果を備える電動車用冷却液組成物を得ることを課題とする。
It should also be noted that as the coolant is used, it does not corrode, especially the inner surface, of the circuit that circulates the coolant. When the inner surface is corroded, the concentration of ionic substances in the coolant increases, which damages the insulating property. As a result, there is a possibility that not only the battery but also the devices required for the electric vehicle or the hybrid car such as the motor and the inverter may leak or the coolant may be energized.
Therefore, as a coolant composition for electric vehicles, in order to cool heat-generating devices such as batteries, motors, and inverters, not only antifreeze and insulating properties, but also rust preventive effect including the inside of the circuit that circulates the coolant. It is an object of the present invention to obtain a coolant composition for an electric vehicle provided with the above.
上記の課題を解決するために本発明は以下の電動車用冷却液組成物とした。
１．下記ａ及びｂを含有する電動車用冷却液組成物。
ａ．ベンゾトリアゾール系化合物
ｂ．有機ケイ素化合物
２．ａ．ベンゾトリアゾール系化合物が式（１）で示される化合物である１に記載の電動車用冷却液組成物。
Ｒ２ ： 炭素数１〜１０のアルキレン基
Ｒ３、Ｒ４ ： Ｒ３、Ｒ４が共に式（２）で示す基、又はＲ３、Ｒ４のいずれか１つが式（２）で示す基であり、残りの基が水素原子、又は炭素数１〜１０のアルキル基
３．有機ケイ素化合物がアミノ基を有する１又は２に記載の電動車用冷却液組成物。
４．水、グリコール類、アルコール類及びグリコールエーテル類の中から選ばれる１種以上を含有する基剤を含有する１〜３のいずれかに記載の電動車用冷却液組成物。
５．ベンゾトリアゾール系化合物は、基剤１００重量部に対して０．０１〜１．０重量部含有する１〜４のいずれかに記載の電動車用冷却液組成物。
６．有機ケイ素化合物は、基剤１００重量部に対して０．０１〜１．０重量部含有する１〜５のいずれかに記載の電動車用冷却液組成物。
７．導電率が２００μＳ／ｃｍ以下である１〜６のいずれかに記載の電動車用冷却液組成物。
In order to solve the above problems, the present invention has the following coolant composition for electric vehicles.
1. 1. A coolant composition for an electric vehicle containing the following a and b.
a. Benzotriazole compounds b. Organosilicon compound 2. a. The coolant composition for an electric vehicle according to 1, wherein the benzotriazole-based compound is a compound represented by the formula (1).
4. The coolant composition for an electric vehicle according to any one of 1 to 3, which contains a base containing at least one selected from water, glycols, alcohols and glycol ethers.
5. The coolant composition for an electric vehicle according to any one of 1 to 4, wherein the benzotriazole-based compound is contained in an amount of 0.01 to 1.0 parts by weight with respect to 100 parts by weight of the base.
6. The coolant composition for an electric vehicle according to any one of 1 to 5, wherein the organosilicon compound is contained in an amount of 0.01 to 1.0 parts by weight with respect to 100 parts by weight of the base.
7. The coolant composition for an electric vehicle according to any one of 1 to 6, which has a conductivity of 200 μS / cm or less.
本発明によれば、不凍性及び絶縁性に優れることに加え、防錆性にも優れた電動車用冷却液組成物を得ることができる。 According to the present invention, it is possible to obtain a coolant composition for an electric vehicle which is excellent not only in antifreezing property and insulating property but also in rust prevention property.
以下、具体的に本発明について述べる。
本発明は冷却液として基剤を有するものであり、その基剤に対して、ベンゾトリアゾール系化合物と有機ケイ素化合物を含有することを基本とする。
本発明はこれらの化合物を併用することにより、それぞれを単独で使用する場合よりも、優れた効果を奏する。特にベンゾトリアゾール系化合物と有機ケイ素化合物をそれぞれ単独で使用すると、いずれの場合も鋳鉄やはんだ等が腐食したり肌荒れするが、これらを併用することにより、合計の含有量がそれぞれ単独で使用した場合と同じであっても、意外なことに、各種の金属に対して十分な防錆効果を発揮できる。
Hereinafter, the present invention will be specifically described.
The present invention has a base as a coolant, and basically contains a benzotriazole-based compound and an organosilicon compound in the base.
When these compounds are used in combination, the present invention exerts an excellent effect as compared with the case where each of them is used alone. In particular, when a benzotriazole compound and an organosilicon compound are used alone, cast iron, solder, etc. are corroded or roughened in both cases, but when these are used together, the total content is used alone. Surprisingly, even if it is the same as, it can exert a sufficient rust preventive effect on various metals.
（ａ．ベンゾトリアゾール系化合物）
本発明の電動車用冷却液組成物が含有するベンゾトリアゾール系化合物としては、例えば、１−アミノアルキルベンゾトリアゾール、１−［ジヒドロキシアルキルアミノ］アルキルベンゾトリアゾール、１−ヒドロキシアルキルアミノアルキルベンゾトリアゾール、１−［ヒドロキシアルキル（アルキル）アミノ］アルキルベンゾトリアゾール、６−メチル−１Ｈ−ベンゾトリアゾール、７−メチル−１Ｈ−ベンゾトリアゾール、１−ヒドロキシベンゾトリアゾール、５−メチルベンゾトリアゾール、１−アミノベンゾトリアゾール、１−フェニルベンゾトリアゾール、１−ヒドロキシメチルベンゾトリアゾール、１−ベンゾトリアゾールカルボン酸メチル、５−ベンゾトリアゾールカルボン酸、１−メトキシ−ベンゾトリアゾール、１−（２，２−ジヒドロキシエチル）−ベンゾトリアゾール、１−（２，３−ジヒドロキシプロピル）ベンゾトリアゾール、あるいは「ＩＲＧＡＭＥＴ」シリーズとしてＢＡＳＦジャパンより市販されている、２，２’−｛［（４−メチル−１Ｈ−ベンゾトリアゾール−１−イル）メチル］イミノ｝ビスエタノール、２，２’−｛［（５−メチル−１Ｈ−ベンゾトリアゾール−１−イル）メチル］イミノ｝ビスエタノール、２，２’−｛［（４−メチル−１Ｈ−ベンゾトリアゾール−１−イル）メチル］イミノ｝ビスエタン、または２，２’−｛［（４−メチル−１Ｈ−ベンゾトリアゾール−１−イル）メチル］イミノ｝ビスプロパン等を挙げることができる。
中でも、１−［ジヒドロキシアルキルアミノ］アルキルベンゾトリアゾール、１−ヒドロキシアルキルアミノアルキルベンゾトリアゾール、１−［ヒドロキシアルキル（アルキル）アミノ］アルキルベンゾトリアゾールが好ましい。
(A. Benzotriazole compound)
Examples of the benzotriazole-based compound contained in the coolant composition for an electric vehicle of the present invention include 1-aminoalkylbenzotriazole, 1- [dihydroxyalkylamino] alkylbenzotriazole, 1-hydroxyalkylaminoalkylbenzotriazole, 1 -[Hydroxyalkyl (alkyl) amino] alkylbenzotriazole, 6-methyl-1H-benzotriazole, 7-methyl-1H-benzotriazole, 1-hydroxybenzotriazole, 5-methylbenzotriazole, 1-aminobenzotriazole, 1 -Phenylbenzotriazole, 1-hydroxymethylbenzotriazole, 1-benzotriazole methyl carboxylate, 5-benzotriazole carboxylic acid, 1-methoxy-benzotriazole, 1- (2,2-dihydroxyethyl) -benzotriazole, 1- (2,3-Dihydroxypropyl) benzotriazole, or 2,2'-{[(4-methyl-1H-benzotriazole-1-yl) methyl] imino} commercially available from BASF Japan as the "IRGAMET" series} Bisethanol, 2,2'-{[(5-methyl-1H-benzotriazole-1-yl) methyl] imino} Bisethanol, 2,2'-{[(4-methyl-1H-benzotriazole-1-yl) Il) methyl] imino} bisethane, 2,2'-{[(4-methyl-1H-benzotriazole-1-yl) methyl] imino} bispropane and the like can be mentioned.
Of these, 1- [dihydroxyalkylamino] alkylbenzotriazole, 1-hydroxyalkylaminoalkylbenzotriazole, and 1- [hydroxyalkyl (alkyl) amino] alkylbenzotriazole are preferable.
その中でも、下記式（１）で示されるものが好ましい。
Ｒ２ ： 炭素数１〜１０のアルキレン基
Ｒ３、Ｒ４ ： Ｒ３、Ｒ４が共に式（２）で示す基、又はＲ３、Ｒ４のいずれか１つが式（２）で示す基であり、残りの基が水素原子、又は炭素数１〜１０のアルキル基
上記式（１）のベンゾトリアゾール系化合物の中でも、２，２’−（４−メチル−Ｈ−ベンゾトリアゾール−１−イルメチルイミノ）モノエタノール、２，２’−（４−メチル−１Ｈ−ベンゾトリアゾール−１−イルメチルイミノ）ビスエタノール、２，２’−（４−メチル−１Ｈ−ベンゾトリアゾール−１−イルメチルイミノ）モノイソプロパノール、２，２’−（４−メチル−１Ｈ−ベンゾトリアゾール−１−イルメチルイミノ）ビスイソプロパノールが好ましく、２，２’−（４−メチル−１Ｈ−ベンゾトリアゾール−１−イルメチルイミノ）ビスエタノールが特に好ましい。
本発明の電動車用冷却液組成物において、ベンゾトリアゾール系化合物の含有量としては、電動車用冷却液組成物の基剤１００重量部に対して、０．０１〜１．０重量部であることが好ましく、０．１〜０．５重量部であることがより好ましい。
ベンゾトリアゾール系化合物の含有量が０．０１重量部未満であると、鉄、鋳鉄、黄銅、はんだ及び銅などの金属が腐食する可能性があり、１．０重量部を超えて含有させても、より高い効果が得られない可能性がある。
Among the benzotriazole compounds of the above formula (1), 2,2'-(4-methyl-H-benzotriazole-1-ylmethylimino) monoethanol and 2,2'-(4-methyl-1H-benzo) Triazole-1-ylmethylimino) bisethanol, 2,2'-(4-methyl-1H-benzotriazole-1-ylmethylimino) monoisopropanol, 2,2'-(4-methyl-1H-benzotriazole-) 1-Ilmethylimino) bisisopropanol is preferable, and 2,2'-(4-methyl-1H-benzotriazole-1-ylmethylimino) bisethanol is particularly preferable.
In the coolant composition for electric vehicles of the present invention, the content of the benzotriazole compound is 0.01 to 1.0 parts by weight with respect to 100 parts by weight of the base of the coolant composition for electric vehicles. It is preferably 0.1 to 0.5 parts by weight, and more preferably 0.1 to 0.5 parts by weight.
If the content of the benzotriazole compound is less than 0.01 parts by weight, metals such as iron, cast iron, brass, solder and copper may corrode, and even if it is contained in excess of 1.0 parts by weight. , Higher effect may not be obtained.
（ｂ．有機ケイ素化合物）
本発明の電動車用冷却液組成物が含有する有機ケイ素化合物としては下記式（３）で示されるものである。
式（３）
ＲｍＳｉＯ（４−ｍ）/２
（式（３）中、Ｒは、互いに独立して、置換若しくは非置換の一価炭化水素基であり、
ｍは、１．９〜２．２の数である。）
ここでＲとしては、好ましくは、互いに独立して、置換若しくは非置換の、炭素数１〜１８の一価炭化水素基である。非置換の一価炭化水素基としては、例えばメチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、ドデシル基、トリデシル基、テトラデシル基、ヘキサデシル基及びオクタデシル基等のアルキル基、シクロヘキシル基等のシクロアルキル基、ビニル基及びアリル基等のアルケニル基、フェニル基及びトリル基等のアリール基、スチリル基及びα−メチルスチリル基等のアリールアルケニル基等が挙げられる。
中でも上記置換基の炭素原子に結合した水素原子の一部又は全部をアミノ基で置換したものが好ましく、例えばアミノメチル基、γ−アミノプロピル基、３，３，３−トリアミノプロピル基、アミノエチル基及びＮ−（β−アミノエチル）−γ−アミノプロピル基等が挙げられ、中でも、γ−アミノプロピルトリエトキシシランが特に好ましい。
(B. Organosilicon compound)
The organosilicon compound contained in the coolant composition for an electric vehicle of the present invention is represented by the following formula (3).
Equation (3)
R m SiO (4-m) / 2
In formula (3), R is a substituted or unsubstituted monovalent hydrocarbon group independently of each other.
m is a number from 1.9 to 2.2. )
Here, R is preferably a monovalent hydrocarbon group having 1 to 18 carbon atoms, which is independently substituted or substituted. Examples of the unsubstituted monovalent hydrocarbon group include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, a dodecyl group, a tridecyl group and a tetradecyl group. , Alkyl group such as hexadecyl group and octadecyl group, cycloalkyl group such as cyclohexyl group, alkenyl group such as vinyl group and allyl group, aryl group such as phenyl group and tolyl group, aryl such as styryl group and α-methylstyryl group. Examples thereof include an alkenyl group.
Of these, those in which a part or all of the hydrogen atom bonded to the carbon atom of the substituent is substituted with an amino group are preferable, for example, an aminomethyl group, a γ-aminopropyl group, a 3,3,3-triaminopropyl group, an amino. Ethyl groups, N- (β-aminoethyl) -γ-aminopropyl groups and the like can be mentioned, and among them, γ-aminopropyltriethoxysilane is particularly preferable.
本発明の電動車用冷却液組成物において、有機ケイ素化合物の含有量としては、電動車用冷却液組成物の基剤１００重量部に対して、０．０１〜１．０重量部であることが好ましく、０．１〜０．５重量部であることがより好ましい。
有機ケイ素化合物の含有量が０．０１重量部未満であると鉄、鋳鉄及びはんだなどの金属が腐食する可能性があり、 １．０重量部を超えて含有させても、より高い効果が得られない可能性がある。
ベンゾトリアゾール系化合物と有機ケイ素化合物の含有比率は、重量の比率で、ベンゾトリアゾール系化合物：有機ケイ素化合物＝１：１００〜１００：１が好ましく、１：５０〜５０：１がより好ましく、１：３０〜３０：１がさらに好ましく、１：２８〜１０：１が最も好ましい。
In the coolant composition for electric vehicles of the present invention, the content of the organosilicon compound is 0.01 to 1.0 parts by weight with respect to 100 parts by weight of the base of the coolant composition for electric vehicles. Is preferable, and more preferably 0.1 to 0.5 parts by weight.
If the content of the organosilicon compound is less than 0.01 parts by weight, metals such as iron, cast iron and solder may be corroded, and even if the content exceeds 1.0 parts by weight, a higher effect can be obtained. It may not be possible.
The content ratio of the benzotriazole compound to the organosilicon compound is preferably a ratio of benzotriazole compound: organosilicon compound = 1: 100 to 100: 1, more preferably 1:50 to 50: 1, and 1: 30 to 30: 1 is more preferable, and 1:28 to 10: 1 is most preferable.
（基剤）
本発明の電動車用冷却液組成物の基剤としては、水、又は水と共に公知の基剤を使用することができ、そのような基剤として例えば下記のアルコール類やグリコールエーテル類から選ばれる１種以上が採用される。電動車用冷却液組成物の融点を考慮して、冷却液組成物中８０〜９９重量％、好ましくは９０〜９８重量％となるように使用されることが好ましい。
（アルコール類）
メタノール、エタノール、プロパノール、ブタノール、ペンタノール、ヘキサノール、ヘプタノール、オクタノール等の１価アルコール類、エチレングリコール、プロピレングリコール、１，３−ブチレングリコール、ヘキシレングリコール、ジエチレングリコール等のグリコール類、グリセリン、トリメチロールエタン、トリメチロールプロパン、５−メチル−１，２，４−ヘプタントリオール、１，２，６−ヘキサントリオール等、中でも特にエチレングリコール、或いはプロピレングリコールが好ましい。
（グリコールエーテル類）
エチレングリコールモノメチルエーテル、ジエチレングリコールモノメチルエーテル、トリエチレングリコールモノメチルエーテル、テトラエチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、ジエチレングリコールモノエチルエーテル、トリエチレングリコールモノエチルエーテル、テトラエチレングリコールモノエチルエーテル、エチレングリコールモノブチルエーテル、ジエチレングリコールモノブチルエーテル、トリエチレングリコールモノブチルエーテル、テトラエチレングリコールモノブチルエーテル等が挙げられる。
(Base)
As the base of the coolant composition for an electric vehicle of the present invention, water or a known base can be used together with water, and such a base is selected from, for example, the following alcohols and glycol ethers. One or more types are adopted. Considering the melting point of the coolant composition for electric vehicles, it is preferably used so as to be 80 to 99% by weight, preferably 90 to 98% by weight in the coolant composition.
(Alcohol)
Monohydric alcohols such as methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, glycols such as ethylene glycol, propylene glycol, 1,3-butylene glycol, hexylene glycol, diethylene glycol, glycerin, trimethylol Ethan, trimethylolpropane, 5-methyl-1,2,4-heptantriol, 1,2,6-hexanetriol and the like, of which ethylene glycol or propylene glycol is particularly preferable.
(Glycol ethers)
Ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol monoethyl ether, ethylene glycol monobutyl ether , Diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monobutyl ether and the like.
（導電率）
本発明の電動車用冷却液組成物は、例えば電池等を冷却する場合において、漏電等の発生を防止するために、導電率が低いことが好ましい。
そのため、電動車用冷却液組成物中にイオン性の化合物を含有しないことが好ましく、ｐＨ調整剤、モリブデン酸塩、タングステン酸塩、塩の形態である各種防錆剤、カルボン酸化合物等の酸やその塩等を含有しないことが好ましい。
そして、好ましい導電率としては、２００μＳ／ｃｍ以下であり、より好ましくは１００μＳ／ｃｍ以下であり、さらに好ましくは５０．０μＳ／ｃｍ以下である。
本発明中の導電率は、ＪＩＳ Ｋ ０１３０に基づいて行い、２５℃で測定したものである。
(conductivity)
The coolant composition for an electric vehicle of the present invention preferably has a low conductivity in order to prevent the occurrence of electric leakage or the like when cooling a battery or the like, for example.
Therefore, it is preferable that the coolant composition for electric vehicles does not contain an ionic compound, and acids such as pH adjusters, molybdates, tungstates, various rust preventives in the form of salts, and carboxylic acid compounds. It is preferable that it does not contain or a salt thereof.
The conductivity is preferably 200 μS / cm or less, more preferably 100 μS / cm or less, and even more preferably 50.0 μS / cm or less.
The conductivity in the present invention was measured based on JIS K 0130 and measured at 25 ° C.
（添加剤）
本発明の冷却組成物には、例えば、消泡剤、着色剤、染料、分散剤又は苦味剤等を、本発明の効果を損なわない範囲で適宜添加することができる。
但し、１８−クラウン−６−エーテル骨格構造を有する分子、３，５−ジメチルピラゾール、テトラエトキシシラン化合物を含有してもしなくても良い。
(Additive)
For example, a defoaming agent, a coloring agent, a dye, a dispersant, a bittering agent and the like can be appropriately added to the cooling composition of the present invention as long as the effects of the present invention are not impaired.
However, it may or may not contain a molecule having an 18-crown-6-ether skeleton structure, a 3,5-dimethylpyrazole, or a tetraethoxysilane compound.
（実施例）
下記実施例及び比較例の組成の電動車用冷却液組成物を調整した。これらの電動車用冷却液組成物の組成及び試験結果を下記表１に示す。表１中の各成分に関する数値は重量部を示す。
ベンゾトリアゾール系化合物：２，２’−｛［（４−メチル−１Ｈ−ベンゾトリアゾール−１−イル）メチル］イミノ｝ビスエタノール
有機ケイ素化合物：γ−アミノプロピルトリエトキシシラン
(Example)
The coolant composition for electric vehicles having the compositions of the following Examples and Comparative Examples was prepared. The composition and test results of these coolant compositions for electric vehicles are shown in Table 1 below. Numerical values for each component in Table 1 indicate parts by weight.
Benzotriazole-based compounds: 2,2'-{[(4-methyl-1H-benzotriazole-1-yl) methyl] imino} bisethanol Organosilicon compounds: γ-aminopropyltriethoxysilane
本発明に沿った例である実施例１によれば、各金属の試験片の試験前後の質量変化は小さく、外観に変化がなかったため合格であった。
それに対して、ベンゾトリアゾール又はオルトケイ酸テトラエチルのみを含有した比較例１及び２によれば、各試験片の質量変化が大きい結果となり、鋳鉄及び鋼が腐食し、はんだ表面に肌荒れが発生したり、黄銅が腐食したりした。
さらに、ベンゾトリアゾール系化合物を０．２５重量部含有させ、有機ケイ素化合物を含有させなかった比較例３によれば、鋳鉄とはんだの質量変化が大きかった。そして鋳鉄に腐食が生じ、はんだ表面に肌荒れが発生した。また、有機ケイ素化合物を０．２５重量部含有し、ベンゾトリアゾールを含有させなかった比較例４によれば、鋳鉄、黄銅、はんだ及び銅に比較的大きい質量変化を生じ、鋳鉄に腐食が生じた。
According to Example 1, which is an example according to the present invention, the mass change of the test piece of each metal before and after the test was small, and the appearance was not changed, so that the test was passed.
On the other hand, according to Comparative Examples 1 and 2 containing only benzotriazole or tetraethyl orthosilicate, the mass change of each test piece was large, the cast iron and steel were corroded, and the solder surface was roughened. The brass has corroded.
Further, according to Comparative Example 3 in which 0.25 parts by weight of the benzotriazole compound was contained and no organosilicon compound was contained, the mass change between the cast iron and the solder was large. Then, the cast iron was corroded and the surface of the solder was roughened. Further, according to Comparative Example 4 in which 0.25 parts by weight of the organosilicon compound was contained and benzotriazole was not contained, a relatively large mass change occurred in cast iron, brass, solder and copper, and the cast iron was corroded. ..
Claims (7)
ａ．ベンゾトリアゾール系化合物
ｂ．有機ケイ素化合物 A coolant composition for an electric vehicle containing the following a and b.
a. Benzotriazole compounds b. Organosilicon compounds
Ｒ２ ： 炭素数１〜１０のアルキレン基
Ｒ３、Ｒ４ ： Ｒ３、Ｒ４が共に式（２）で示す基、又はＲ３、Ｒ４のいずれか１つが式（２）で示す基であり、残りの基が水素原子、又は炭素数１〜１０のアルキル基
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020072580A JP2021169551A (en) | 2020-04-14 | 2020-04-14 | Coolant composition for electric vehicles |
Applications Claiming Priority (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113913163A (en) * | 2020-07-07 | 2022-01-11 | 中国石油化工股份有限公司 | Heat conduction medium and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113913163A (en) * | 2020-07-07 | 2022-01-11 | 中国石油化工股份有限公司 | Heat conduction medium and preparation method and application thereof |
| CN113913163B (en) * | 2020-07-07 | 2024-03-19 | 中国石油化工股份有限公司 | Heat conduction medium and preparation method and application thereof |
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