JP5967138B2 - Grease composition and machine parts - Google Patents
Grease composition and machine parts Download PDFInfo
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- JP5967138B2 JP5967138B2 JP2014119666A JP2014119666A JP5967138B2 JP 5967138 B2 JP5967138 B2 JP 5967138B2 JP 2014119666 A JP2014119666 A JP 2014119666A JP 2014119666 A JP2014119666 A JP 2014119666A JP 5967138 B2 JP5967138 B2 JP 5967138B2
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- grease composition
- fatty acid
- rust
- sulfonate
- salt
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- 239000004519 grease Substances 0.000 title claims description 37
- 239000000203 mixture Substances 0.000 title claims description 37
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 36
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 25
- 239000000194 fatty acid Substances 0.000 claims description 25
- 229930195729 fatty acid Natural products 0.000 claims description 25
- -1 fatty acid amine salt Chemical class 0.000 claims description 20
- 239000003112 inhibitor Substances 0.000 claims description 18
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 18
- 125000004432 carbon atom Chemical group C* 0.000 claims description 10
- 150000004665 fatty acids Chemical class 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- 150000003839 salts Chemical group 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 8
- 239000002199 base oil Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 150000001412 amines Chemical class 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- LPRVNTWNHMSTPR-UHFFFAOYSA-M lithium;2-hydroxyoctadecanoate Chemical compound [Li+].CCCCCCCCCCCCCCCCC(O)C([O-])=O LPRVNTWNHMSTPR-UHFFFAOYSA-M 0.000 claims 1
- 230000002265 prevention Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 150000003973 alkyl amines Chemical class 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000003760 tallow Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- XDOFQFKRPWOURC-UHFFFAOYSA-N 16-methylheptadecanoic acid Chemical compound CC(C)CCCCCCCCCCCCCCC(O)=O XDOFQFKRPWOURC-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 235000015278 beef Nutrition 0.000 description 2
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 2
- 159000000007 calcium salts Chemical class 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RZXMPPFPUUCRFN-UHFFFAOYSA-N p-toluidine Chemical compound CC1=CC=C(N)C=C1 RZXMPPFPUUCRFN-UHFFFAOYSA-N 0.000 description 2
- 229920013639 polyalphaolefin Polymers 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003871 sulfonates Chemical class 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- 150000003751 zinc Chemical class 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- VBCJJAZGEJSVTL-UHFFFAOYSA-N (Z)-18-methylnonadec-9-en-1-amine Chemical compound CC(CCCCCCCC=C/CCCCCCCCN)C VBCJJAZGEJSVTL-UHFFFAOYSA-N 0.000 description 1
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 1
- FRPZMMHWLSIFAZ-UHFFFAOYSA-N 10-undecenoic acid Chemical compound OC(=O)CCCCCCCCC=C FRPZMMHWLSIFAZ-UHFFFAOYSA-N 0.000 description 1
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 1
- KIHBGTRZFAVZRV-UHFFFAOYSA-N 2-Hydroxyoctadecanoic acid Natural products CCCCCCCCCCCCCCCCC(O)C(O)=O KIHBGTRZFAVZRV-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- BWLUMTFWVZZZND-UHFFFAOYSA-N Dibenzylamine Chemical compound C=1C=CC=CC=1CNCC1=CC=CC=C1 BWLUMTFWVZZZND-UHFFFAOYSA-N 0.000 description 1
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical compound C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 description 1
- 239000005069 Extreme pressure additive Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methyl-N-phenylamine Natural products CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- PLZVEHJLHYMBBY-UHFFFAOYSA-N Tetradecylamine Chemical compound CCCCCCCCCCCCCCN PLZVEHJLHYMBBY-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- VMDFASMUILANOL-WXXKFALUSA-N bisoprolol fumarate Chemical compound [H+].[H+].[O-]C(=O)\C=C\C([O-])=O.CC(C)NCC(O)COC1=CC=C(COCCOC(C)C)C=C1.CC(C)NCC(O)COC1=CC=C(COCCOC(C)C)C=C1 VMDFASMUILANOL-WXXKFALUSA-N 0.000 description 1
- MKFUUBCXQNCPIP-UHFFFAOYSA-L calcium;2,3-di(nonyl)naphthalene-1-sulfonate Chemical compound [Ca+2].C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1.C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 MKFUUBCXQNCPIP-UHFFFAOYSA-L 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- KHAVLLBUVKBTBG-UHFFFAOYSA-N caproleic acid Natural products OC(=O)CCCCCCCC=C KHAVLLBUVKBTBG-UHFFFAOYSA-N 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- NAPSCFZYZVSQHF-UHFFFAOYSA-N dimantine Chemical compound CCCCCCCCCCCCCCCCCCN(C)C NAPSCFZYZVSQHF-UHFFFAOYSA-N 0.000 description 1
- 229950010007 dimantine Drugs 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- VPNOHCYAOXWMAR-UHFFFAOYSA-N docosan-1-amine Chemical compound CCCCCCCCCCCCCCCCCCCCCCN VPNOHCYAOXWMAR-UHFFFAOYSA-N 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- CJMZLCRLBNZJQR-UHFFFAOYSA-N ethyl 2-amino-4-(4-fluorophenyl)thiophene-3-carboxylate Chemical compound CCOC(=O)C1=C(N)SC=C1C1=CC=C(F)C=C1 CJMZLCRLBNZJQR-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- FPLIHVCWSXLMPX-UHFFFAOYSA-M lithium 12-hydroxystearate Chemical compound [Li+].CCCCCCC(O)CCCCCCCCCCC([O-])=O FPLIHVCWSXLMPX-UHFFFAOYSA-M 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000006078 metal deactivator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- YWWNNLPSZSEZNZ-UHFFFAOYSA-N n,n-dimethyldecan-1-amine Chemical compound CCCCCCCCCCN(C)C YWWNNLPSZSEZNZ-UHFFFAOYSA-N 0.000 description 1
- UQKAOOAFEFCDGT-UHFFFAOYSA-N n,n-dimethyloctan-1-amine Chemical compound CCCCCCCCN(C)C UQKAOOAFEFCDGT-UHFFFAOYSA-N 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 150000008054 sulfonate salts Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- 229960002703 undecylenic acid Drugs 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- COGHWIKGZJHSAG-UHFFFAOYSA-L zinc;2,3-di(nonyl)naphthalene-1-sulfonate Chemical compound [Zn+2].C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1.C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 COGHWIKGZJHSAG-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Lubricants (AREA)
Description
本発明は、グリース組成物に関し、特に錆止め性に優れたグリース組成物及びこれを使用した機械部品、特に軸受に関する。 The present invention relates to a grease composition, and more particularly to a grease composition excellent in rust prevention and a machine part using the grease composition, and particularly a bearing.
オルタネータや電磁クラッチなどに代表される自動車電装部品、エンジン補機等、走行中における、路上の水、塩水或いは海水などの浸入による錆が問題となる転がり軸受部品、圧縮機や送風機などに代表される産業機械モータのように冷却水使用による浸入や、屋外設置環境による雨水、海水の浸入による錆が問題となる転がり軸受部品、洗濯機や冷蔵庫、近年見られる浴室換気扇や浴室乾燥機などに代表される家電用モータのように高湿度環境などによる錆が問題となる転がり軸受部品など、錆の発生が問題となる多様な機械部品がある。
このような錆の発生が問題となる転がり軸受などは、適当なシールや機構上の対策によって、錆の起因となる物質の混入を防いでいる。
例えば、自動車においては、直接泥水等がかからない位置に配置したり、泥よけ等を取り付けたりの対策が行われている。
しかし、転がり軸受は機構上、完全な密封は不可能であるため、使用する潤滑グリースも、錆止め性能を有することが必要である。
Represented in rolling bearing parts, compressors, blowers, etc. where rust due to intrusion of water, salt water, sea water, etc. on the road during driving, such as automobile electrical parts, engine auxiliary equipment, etc. represented by alternators and electromagnetic clutches, etc. Typical examples include rolling bearing parts, washing machine and refrigerator, bathroom ventilators and bathroom dryers seen in recent years. There are a variety of mechanical parts where rust is a problem, such as rolling bearing parts where rust due to a high humidity environment is a problem, such as motors for home appliances.
Such rolling bearings in which the occurrence of rust is a problem is prevented from being mixed with substances that cause rust by appropriate sealing and mechanical measures.
For example, in an automobile, measures are taken such as arranging it at a position where it is not directly exposed to muddy water or attaching mudguards or the like.
However, since the rolling bearing cannot be completely sealed due to its mechanism, the lubricating grease to be used must also have rust prevention performance.
例えば、特許文献１には、錆止め剤として、油溶性有機インヒビター、水溶性無機不働態化剤、非イオン界面活性剤を配合したグリース組成物が開示されている。
特許文献２には、錆止め剤としてバリウムスルホネートを配合した軸受封入用グリース組成物が開示されている。
しかし、水溶性無機不働態化剤として優れており、広く使用されていた亜硝酸ナトリウムは、第二級アミンと反応して、発がん物質であるＮ−ニトロソアミンを生成することが知られており、人体への悪影響が懸念されている。
また、油溶性有機インヒビターとして広く使用されていたバリウムスルホネートをはじめとする有機スルホン酸塩のみの錆止め性では、特に塩水条件や海水条件のような厳しい条件下では、不満足なものである。
また、バリウムスルホネートは非特許文献１に記載されているとおり、環境負荷物質として業界で自主規制の動きがある。
For example, Patent Document 1 discloses a grease composition containing an oil-soluble organic inhibitor, a water-soluble inorganic passivating agent, and a nonionic surfactant as a rust inhibitor.
Patent Document 2 discloses a grease composition for encapsulating a bearing in which barium sulfonate is blended as a rust inhibitor.
However, it is known as a water-soluble inorganic passivating agent, and sodium nitrite, which has been widely used, is known to react with secondary amines to produce carcinogen N-nitrosamines, There are concerns about adverse effects on the human body.
Further, the antirust property of only organic sulfonates such as barium sulfonate widely used as an oil-soluble organic inhibitor is unsatisfactory particularly under severe conditions such as salt water conditions and sea water conditions.
In addition, as described in Non-Patent Document 1, barium sulfonate has a voluntary regulation in the industry as an environmental load substance.
本発明の目的は、錆止め性に優れ、且つ環境負荷の少ないグリース組成物を提供することである。
本発明の他の目的は、上記グリース組成物を使用した機械部品、特に軸受を提供することである。
An object of the present invention is to provide a grease composition that is excellent in rust prevention properties and has a low environmental load.
Another object of the present invention is to provide a machine part, particularly a bearing, using the above grease composition.
本発明は以下に示すグリース組成物及びこれを使用した機械部品を提供する。
１．基油、増ちょう剤、及び錆止め剤を含むグリース組成物であって、錆止め剤が、有機スルホン酸塩、及び脂肪酸アミン塩を含有することを特徴とするグリース組成物。
２．上記有機スルホン酸塩がスルホン酸カルシウム及びスルホン酸亜鉛からなる群から選ばれる少なくとも１種である上記１記載のグリース組成物。
３．脂肪酸アミン塩が、アミンと炭素数４〜２２の脂肪酸の塩である上記１又は２記載のグリース組成物。
４．転がり軸受用である上記１〜３のいずれか１項記載のグリース組成物。
５．上記１〜４のいずれか１項記載のグリース組成物を使用した機械部品。
The present invention provides the following grease composition and machine parts using the same.
1. A grease composition comprising a base oil, a thickener, and a rust inhibitor, wherein the rust inhibitor comprises an organic sulfonate and a fatty acid amine salt.
2. 2. The grease composition as described in 1 above, wherein the organic sulfonate is at least one selected from the group consisting of calcium sulfonate and zinc sulfonate.
3. 3. The grease composition according to 1 or 2 above, wherein the fatty acid amine salt is a salt of an amine and a fatty acid having 4 to 22 carbon atoms.
4). 4. The grease composition according to any one of items 1 to 3, which is for a rolling bearing.
5. A machine part using the grease composition according to any one of 1 to 4 above.
本発明のグリース組成物は、厳しい錆発生条件下においても優れた錆止め性を有している。 The grease composition of the present invention has excellent rust prevention properties even under severe rust generation conditions.
本発明のグリース組成物に使用される増ちょう剤は、特に限定されない。例えば、リチウムやナトリウム等を含む金属石けん類、ベントン、シリカゲル、ウレア化合物、ポリテトラフルオロエチレンに代表されるフッ素系増ちょう剤等の非石けん類などが挙げられる。特に好ましくは、ウレア化合物やリチウム石けん類である。これらは欠点が少なく、かつ高価でないため、実用性のある増ちょう剤である。
増ちょう剤は一種類を単独で使用しても、二種類以上を組み合わせて使用しても良い。
本発明のグリース組成物のちょう度は、２００〜４００が好適であり、増ちょう剤の含有量はこのちょう度を得るのに必要な量となる。通常はグリース組成物全体に対して好ましくは３〜３０質量％、さらに好ましくは５〜３０質量％、最も好ましくは８〜２５質量％である。
The thickener used in the grease composition of the present invention is not particularly limited. For example, metal soaps containing lithium, sodium, and the like, benton, silica gel, urea compounds, non-soaps such as fluorine-based thickeners typified by polytetrafluoroethylene, and the like can be given. Particularly preferred are urea compounds and lithium soaps. These are practical thickeners because they have few drawbacks and are not expensive.
One type of thickener may be used alone, or two or more types may be used in combination.
The consistency of the grease composition of the present invention is preferably 200 to 400, and the content of the thickener is an amount necessary to obtain this consistency. Usually, it is preferably 3 to 30% by mass, more preferably 5 to 30% by mass, and most preferably 8 to 25% by mass with respect to the entire grease composition.
本発明のグリース組成物に使用される基油はエステル系合成油及び合成炭化水素油からなる群から選ばれる合成油である。例えば、ジエステル、ポリオールエステルに代表されるエステル系合成油；ポリαオレフィン、ポリブテンに代表される合成炭化水素油が挙げられる。
基油は一種類を単独で使用しても、二種類以上を組み合わせて使用しても良い。
The base oil used in the grease composition of the present invention is a synthetic oil selected from the group consisting of ester synthetic oils and synthetic hydrocarbon oils. Examples thereof include ester-based synthetic oils typified by diesters and polyol esters; synthetic hydrocarbon oils typified by polyalphaolefins and polybutenes.
One type of base oil may be used alone, or two or more types may be used in combination.
本発明に使用される錆止め剤は、有機スルホン酸塩と脂肪酸アミン塩を必須成分として含有する。
上記スルホン酸塩のスルホン酸成分としては、例えば、石油スルホン酸、ジノニルナフタレンスルホン酸等が挙げられ、塩としては金属塩が好ましく、特に、カルシウム塩、マグネシウム塩、ナトリウム塩、カリウム塩、リチウム塩、亜鉛塩などが挙げられる。特に好ましい塩は、カルシウム塩、もしくは亜鉛塩である。
本発明のグリース組成物において、有機スルホン酸塩は単独で使用しても良いし、２種以上を適宜組み合わせて使用しても良い。
本発明のグリース組成物中、有機スルホン酸塩の含有量は、有効成分として、好ましくは、０．１〜１０質量％、より好ましくは、０．１〜８質量％、さらに好ましくは０．２〜５質量％である。
The rust inhibitor used in the present invention contains an organic sulfonate and a fatty acid amine salt as essential components.
Examples of the sulfonic acid component of the sulfonate include petroleum sulfonic acid, dinonylnaphthalene sulfonic acid and the like, and the salt is preferably a metal salt, and in particular, calcium salt, magnesium salt, sodium salt, potassium salt, lithium Examples include salts and zinc salts. Particularly preferred salts are calcium salts or zinc salts.
In the grease composition of the present invention, the organic sulfonate may be used alone or in combination of two or more.
In the grease composition of the present invention, the content of the organic sulfonate is preferably 0.1 to 10% by mass, more preferably 0.1 to 8% by mass, and still more preferably 0.2% as an active ingredient. ˜5 mass%.
上記脂肪酸アミン塩を構成する脂肪酸としては、好ましくは炭素数４〜２２の脂肪酸、さらに好ましくは炭素数８〜１８の脂肪酸が挙げられる。脂肪酸は、飽和脂肪酸でも不飽和脂肪酸でも良く、更に直鎖脂肪酸、分岐脂肪酸、環状脂肪酸、ヒドロキシ脂肪酸でも良い。具体的には、ステアリン酸、パルミチン酸、ミリスチン酸、ラウリン酸、イソステアリン酸、オクチル酸、ウンデシレン酸、オレイン酸、ヒドロキシステアリン酸等が挙げられる。
上記脂肪酸アミン塩を構成するアミンとしては、特に限定されないが、好ましくは飽和又は不飽和の炭素数１〜４２のアミン、さらに好ましくは、飽和または不飽和の炭素数４〜２２のアミンが挙げられる。
具体的には、オクチルアミン、ラウリルアミン、ミリスチルアミン、ステアリルアミン、ベヘニルアミン、オレイルアミン、牛脂アルキルアミン、硬化牛脂アルキルアミン、アニリン、ベンジルアミン、シクロヘキシルアミン、ジエチルアミン、ジプロピルアミン、ジブチルアミン、ジフェニルアミン、ジベンジルアミン、ジシクロヘキシルアミン、トリエチルアミン、トリブチルアミン、ジメチルオクチルアミン、ジメチルデシルアミン、ジメチルステアリルアミン、ジメチル牛脂アルキルアミン、ジメチル硬化牛脂アルキルアミン、ジメチルオレイルアミン等が挙げられる。
The fatty acid constituting the fatty acid amine salt is preferably a fatty acid having 4 to 22 carbon atoms, more preferably a fatty acid having 8 to 18 carbon atoms. The fatty acid may be a saturated fatty acid or an unsaturated fatty acid, and may be a linear fatty acid, a branched fatty acid, a cyclic fatty acid, or a hydroxy fatty acid. Specific examples include stearic acid, palmitic acid, myristic acid, lauric acid, isostearic acid, octylic acid, undecylenic acid, oleic acid, and hydroxystearic acid.
The amine constituting the fatty acid amine salt is not particularly limited, but is preferably a saturated or unsaturated amine having 1 to 42 carbon atoms, more preferably a saturated or unsaturated amine having 4 to 22 carbon atoms. .
Specifically, octylamine, laurylamine, myristylamine, stearylamine, behenylamine, oleylamine, beef tallow alkylamine, hardened tallow alkylamine, aniline, benzylamine, cyclohexylamine, diethylamine, dipropylamine, dibutylamine, diphenylamine, Examples include dibenzylamine, dicyclohexylamine, triethylamine, tributylamine, dimethyloctylamine, dimethyldecylamine, dimethylstearylamine, dimethyl beef tallow alkylamine, dimethyl-cured tallow alkylamine, and dimethyloleylamine.
本発明のグリース組成物において、脂肪酸アミン塩は単独で使用しても良いし、２種以上を適宜組み合わせて使用しても良い。
本発明のグリース組成物中、脂肪酸アミン塩の含有量は、有効成分として、好ましくは、０．０５〜５質量％、より好ましくは、０．０５〜３質量％、さらに好ましくは０．１〜２質量％である。
In the grease composition of the present invention, the fatty acid amine salt may be used alone or in combination of two or more.
In the grease composition of the present invention, the content of the fatty acid amine salt is preferably 0.05 to 5% by mass, more preferably 0.05 to 3% by mass, and still more preferably 0.1 to 0.1% as an active ingredient. 2% by mass.
本発明のグリース組成物には、上記の有機スルホン酸塩、脂肪酸アミン塩以外に、必要に応じてグリース組成物に通常使用される全ての添加剤を単独又は２種以上混合して用いることが出来る。これらの添加剤の例としては、酸化防止剤、金属不活性化剤、清浄分散剤、極圧添加剤、泡消剤、抗乳化剤、油性向上剤、耐摩耗剤、固体潤滑剤などが挙げられる。 In the grease composition of the present invention, in addition to the organic sulfonate and fatty acid amine salt, all additives usually used in the grease composition may be used alone or in combination of two or more as required. I can do it. Examples of these additives include antioxidants, metal deactivators, detergent dispersants, extreme pressure additives, defoamers, demulsifiers, oiliness improvers, antiwear agents, solid lubricants, and the like. .
実施例
下記の成分を使用し、ベースグリースに所定量の添加剤を加えてよく混ぜ、３本ロールミルで混練し、表１及び表２に示されるグリース組成物を製造した。
ベースグリース：
Ａ．増ちょう剤：１２-ヒドロキシステアリン酸リチウム
基油：ポリオールエステル ４０℃動粘度 ３４．０ｍｍ2／ｓ
ちょう度：２５０
Ｂ．増ちょう剤：ジウレア化合物（パラトルイジン（２モル）とジフェニルメタンジイソシアネート（１モル）との反応物）
基油：ポリα-オレフィン ４０℃動粘度 ４８．０ｍｍ2／ｓ
ちょう度：２８０
錆止め剤：
Ｃ．スルホン酸カルシウム（ジノニルナフタレンスルホン酸カルシウム塩）
Ｄ．スルホン酸亜鉛（ジノニルナフタレンスルホン酸亜鉛塩）
Ｅ．脂肪酸アミン塩（炭素数８の脂肪酸と炭素数１２のアミンとの塩、及び、炭素数１８の脂肪酸と炭素数１２〜２０（混合）アミンとの塩の２種混合物（質量比２：１））
Example Using the following components, a predetermined amount of an additive was added to the base grease and mixed well, and the mixture was kneaded with a three-roll mill to produce grease compositions shown in Tables 1 and 2.
Base grease:
A. Thickener: lithium 12-hydroxystearate
Base oil: Polyol ester 40 ° C. Kinematic viscosity 34.0 mm 2 / s
Consistency: 250
B. Thickener: Diurea compound (reaction product of p-toluidine (2 mol) and diphenylmethane diisocyanate (1 mol))
Base oil: Poly α-olefin 40 ° C. Kinematic viscosity 48.0 mm 2 / s
Consistency: 280
Rust inhibitor:
C. Calcium sulfonate (calcium dinonylnaphthalene sulfonate)
D. Zinc sulfonate (zinc dinonylnaphthalene sulfonate)
E. Fatty acid amine salt (a mixture of a fatty acid having 8 carbon atoms and an amine having 12 carbon atoms, and a mixture of two salts of a fatty acid having 18 carbon atoms and 12 to 20 carbon atoms (mixed) (mass ratio 2: 1) )
＜試験方法＞
・錆止め性 ： Ｅｍｃｏｒ防錆試験（ＩＰ２２０） 人工海水使用（ＩＳＯ７１２０）
・判定方法：外輪転送面の発錆状態観察（ｎ＝２）
合格 ０：発錆なし
不合格 １：小さな点錆３個以内
２：錆エリア１％以内
３：錆エリア１％超〜５％以内
４：錆エリア５％超〜１０％以内
５：１０％超
<Test method>
・ Rust prevention: Emcor rust prevention test (IP220) Artificial seawater use (ISO7120)
・ Judgment method: Observation of rusting state on outer ring transfer surface (n = 2)
Passed 0: No rusting Fail 1: Less than 3 small spot rusts
2: Rust area within 1%
3: Over 1% to 5% rust area
4: Rust area over 5% and within 10%
5: Over 10%
有機スルホン酸塩（錆止め剤Ｃ，Ｄ）と脂肪酸アミン塩（錆止め剤Ｅ）を組み合わせて配合した実施例１〜６は、いずれも発錆せず、錆止め性が良好であった。
実施例１〜３と錆止め剤として同量配合した比較例１（錆止め剤Ｃ配合）、比較例２（錆止め剤Ｄ配合）、比較例３（錆止め剤Ｃ，Ｄ配合）、比較例４（錆止め剤Ｅ配合）はいずれも発錆が認められ、錆止め性は劣る結果であった。
実施例６と錆止め剤として同量配合した比較例５（錆止め剤Ｃ，Ｄ配合）は発錆が認められ、錆止め性は劣る結果であった。
以上の例から明らかなように、本発明のグリース組成物は、有機スルホン酸塩、及び脂肪酸アミン塩を併用しているため、厳しい発錆条件下においても優れた錆止め性を有していることが示された。
In Examples 1 to 6, in which organic sulfonates (rust inhibitors C and D) and fatty acid amine salts (rust inhibitors E) were combined and blended, no rusting occurred, and the rust prevention properties were good.
Comparative Examples 1 (compounding with rust inhibitor C), Comparative Example 2 (comprising rust inhibitor D), Comparative Example 3 (comprising rust inhibitors C and D), Comparative Example 4 (rust inhibitor) Rust generation was observed in all of the agents E), and the antirust property was inferior.
Rust generation was observed in Comparative Example 5 (compounding with rust inhibitors C and D), which was blended in the same amount as Example 6 and the rust inhibitor, and the rust preventive properties were inferior.
As is clear from the above examples, the grease composition of the present invention uses an organic sulfonate salt and a fatty acid amine salt in combination, and therefore has excellent rust preventive properties even under severe rusting conditions. It has been shown.
Claims (5)
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