CN1058985C - Nano size rare earth fluoride lubricant oil additive - Google Patents
Nano size rare earth fluoride lubricant oil additive Download PDFInfo
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- CN1058985C CN1058985C CN98123519A CN98123519A CN1058985C CN 1058985 C CN1058985 C CN 1058985C CN 98123519 A CN98123519 A CN 98123519A CN 98123519 A CN98123519 A CN 98123519A CN 1058985 C CN1058985 C CN 1058985C
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 33
- -1 rare earth fluoride Chemical class 0.000 title claims abstract description 15
- 239000000654 additive Substances 0.000 title claims abstract description 14
- 230000000996 additive effect Effects 0.000 title claims abstract description 12
- 239000000314 lubricant Substances 0.000 title 1
- 239000010687 lubricating oil Substances 0.000 claims abstract description 19
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 19
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000002199 base oil Substances 0.000 claims abstract description 12
- 239000011775 sodium fluoride Substances 0.000 claims abstract description 9
- 235000013024 sodium fluoride Nutrition 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 6
- 239000004094 surface-active agent Substances 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 229920002367 Polyisobutene Polymers 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000003208 petroleum Substances 0.000 claims description 7
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229960002317 succinimide Drugs 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 2
- 229910052691 Erbium Inorganic materials 0.000 claims description 2
- 229910052693 Europium Inorganic materials 0.000 claims description 2
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 2
- 229910052689 Holmium Inorganic materials 0.000 claims description 2
- 229910052765 Lutetium Inorganic materials 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 2
- 229910052772 Samarium Inorganic materials 0.000 claims description 2
- 229910052771 Terbium Inorganic materials 0.000 claims description 2
- 229910052775 Thulium Inorganic materials 0.000 claims description 2
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 2
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 claims description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims description 2
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 2
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 claims description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 claims description 2
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 2
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 claims description 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims 1
- 235000010446 mineral oil Nutrition 0.000 claims 1
- 239000005069 Extreme pressure additive Substances 0.000 abstract description 3
- 239000007866 anti-wear additive Substances 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229940057995 liquid paraffin Drugs 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- FGBKFKCLWFRKEW-UHFFFAOYSA-K erbium(3+);triperchlorate Chemical compound [Er+3].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O FGBKFKCLWFRKEW-UHFFFAOYSA-K 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- YZDZYSPAJSPJQJ-UHFFFAOYSA-N samarium(3+);trinitrate Chemical compound [Sm+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O YZDZYSPAJSPJQJ-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Lubricants (AREA)
Abstract
本发明公开了一种纳米氟化稀土润滑油添加剂及其制备方法。本发明由水溶性稀土无机盐、分散剂、表面活性剂、促进剂、基础油、氟化钠组成。本发明的纳米氟化稀土颗粒尺寸在10～50纳米，成功地解决了氟化稀土在润滑油中的分散问题，它是性能优良的润滑油极压、抗磨添加剂。The invention discloses a nanometer fluorinated rare earth lubricating oil additive and a preparation method thereof. The invention consists of water-soluble rare earth inorganic salt, dispersant, surface active agent, accelerator, base oil and sodium fluoride. The particle size of the nanometer rare earth fluoride is 10-50 nanometers, which successfully solves the dispersion problem of the rare earth fluoride in lubricating oil, and is an excellent extreme pressure and anti-wear additive for lubricating oil.
Description
本发明公开了一种纳米氟化稀土润滑油添加剂及其制备方法。The invention discloses a nanometer fluorinated rare earth lubricating oil additive and a preparation method thereof.
稀土氟化物在润滑脂中得到了广泛应用，U.S.4,507,214，4,946,607，4,946,608公开了氟化稀土在润滑油脂中具有良好的润滑性。在CN 1,032549A，1,032,550A中，稀土氟化物已被成功的应用于铁路润滑成膜膏中，并取得了非常好的润滑效果。由于其在润滑油中的分散性很差，从而限制了其在润滑油中的广泛应用。Rare earth fluorides have been widely used in lubricating greases. U.S. 4,507,214, 4,946,607, and 4,946,608 disclose that rare earth fluorides have good lubricity in lubricating greases. In CN 1,032549A, 1,032,550A, rare earth fluorides have been successfully applied in railway lubricating film-forming pastes, and have achieved very good lubricating effects. Due to its poor dispersibility in lubricating oil, its wide application in lubricating oil is limited.
本发明的目的在于提供一种润滑油添加剂及其制备方法，它在润滑油中具有良好的分散性、极压和抗磨性能。The object of the present invention is to provide a lubricating oil additive and its preparation method, which has good dispersibility, extreme pressure and anti-wear properties in lubricating oil.
本发明由水溶性稀土无机盐、分散剂、表面活性剂、促进剂、基础油、氟化钠组成。The invention consists of water-soluble rare earth inorganic salt, dispersant, surface active agent, accelerator, base oil and sodium fluoride.
纳米氟化稀土润滑油添加剂由：水溶性稀土无机盐10～20、分散剂10～30、表面活性剂0.1～5、促进剂10～30、基础油40～60、氟化钠2～5(重量百分含量)组成。Nano fluorinated rare earth lubricating oil additives are composed of: water-soluble rare earth inorganic salt 10-20, dispersant 10-30, surfactant 0.1-5, accelerator 10-30, base oil 40-60, sodium fluoride 2-5 ( weight percent) composition.
稀土无机盐为氯化稀土、硝酸稀土或高氯酸稀土，稀土为镧、铈、镨、钕、钐、铕、钆、铽、镝、钬、铒、铥、镱、镥中的一种或几种。The rare earth inorganic salt is rare earth chloride, rare earth nitrate or rare earth perchlorate, and the rare earth is one or more Several kinds.
分散剂为聚异丁烯单丁二酰亚胺、聚异丁烯双丁二酰亚胺、石油磺酸钙、石油磺酸镁中的一种或几种。The dispersant is one or more of polyisobutylene monosuccinimide, polyisobutylene bis-succinimide, calcium petroleum sulfonate, and magnesium petroleum sulfonate.
表面活性剂为司本-20、司本-80、吐温-40、吐温-60的一种或几种。Surfactant is one or more of Siben-20, Siben-80, Tween-40 and Tween-60.
促进剂为水、甲醇、乙醇、丙醇、丁醇、戊醇、己醇、辛醇的一种或几种的混合物。The accelerator is one or a mixture of water, methanol, ethanol, propanol, butanol, pentanol, hexanol, and octanol.
基础油为中性石蜡基精制基础油(40℃粘度为28.8-35.2mm2/s)。The base oil is a neutral paraffin-based refined base oil (viscosity of 28.8-35.2 mm 2 /s at 40°C).
其制备方法如下：Its preparation method is as follows:
将水溶性无机稀土盐10～20wt.％溶于水中，将分散剂10～30wt.％、表面活性剂0.1～5wt.％、促进剂10～30wt.％、中性石蜡基精制基础油(40℃粘度为28.8-35.2mm2/s)40～60wt.％，将苯0.6份(以上述总量为1份)与上述溶液混合，在水浴中搅拌半小时，缓慢滴加2～5wt.％氟化钠的水溶液，在水浴中搅拌5～10小时。减压蒸除苯、水等物质。10-20wt.% of water-soluble inorganic rare earth salt is dissolved in water, 10-30wt.% of dispersant, 0.1-5wt.% of surfactant, 10-30wt.% of accelerator, neutral paraffin-based refined base oil (40 ℃ viscosity is 28.8-35.2mm 2 /s) 40 ~ 60wt.%, 0.6 parts of benzene (1 part based on the above total amount) is mixed with the above solution, stirred in a water bath for half an hour, slowly drop 2 ~ 5wt.% The aqueous solution of sodium fluoride was stirred in a water bath for 5-10 hours. Substances such as benzene and water were evaporated under reduced pressure.
本发明所合成的含氮有机物修饰的纳米氟化稀土是一类非常有效的润滑油极压、抗磨添加剂。其作为润滑油添加剂的添加量为0.1wt％～8wt％。The nanometer rare earth fluoride synthesized by nitrogen-containing organic matter modified by the invention is a kind of very effective extreme pressure and anti-wear additives for lubricating oil. Its addition amount as lubricating oil additive is 0.1wt%-8wt%.
为了更好地理解本发明，通过实例进行说明。In order to better understand the present invention, it is illustrated by examples.
实例1将1.86g氯化镧溶于水中，再将2g聚异丁烯单丁二酰亚胺、0.2g石油磺酸钙0.3g司本-80、7g基础油与上述溶液混合，加入10ml苯，在水浴中搅拌半小时，缓慢滴加1.1g氟化钠的水溶液，在水浴中搅拌7小时。加入50ml的苯以便过滤。将滤液减压蒸除苯、水等挥发性物质。Example 1 Dissolve 1.86g lanthanum chloride in water, then mix 2g polyisobutylene monosuccinimide, 0.2g petroleum calcium sulfonate, 0.3g Siben-80, and 7g base oil with the above solution, add 10ml benzene, and Stir in a water bath for half an hour, slowly add 1.1 g of an aqueous solution of sodium fluoride dropwise, and stir in a water bath for 7 hours. Add 50ml of benzene for filtration. The filtrate was evaporated under reduced pressure to remove volatile substances such as benzene and water.
实例2将2.22g硝酸钐溶于水中，再将3g聚异丁烯双丁二酰亚胺、0.1g石油磺酸钙、0.3g司本-80、10ml甲醇、7g基础油与上述溶液混合，加入14ml苯，在水浴中搅拌半小时，缓慢滴加1.1g氟化钠溶液，在水浴中搅拌9小时。加入50ml的苯以便过滤。将滤液减压蒸除苯、水等挥发性物质。Example 2 Dissolve 2.22g of samarium nitrate in water, then mix 3g of polyisobutylene bis-succinimide, 0.1g of calcium petroleum sulfonate, 0.3g of Siben-80, 10ml of methanol, and 7g of base oil with the above solution, and add 14ml Benzene, stirred in a water bath for half an hour, slowly added dropwise 1.1 g of sodium fluoride solution, and stirred in a water bath for 9 hours. Add 50ml of benzene for filtration. The filtrate was evaporated under reduced pressure to remove volatile substances such as benzene and water.
实例3将2.35g高氯酸铒溶于水中，再将2.1g聚异丁烯双丁二酰亚胺、0.2g石油磺酸镁、0.3g司本-80、6g基础油与上述溶液混合，加入15ml苯，在水浴中搅拌半小时，缓慢滴加1.7g氟化钠的水溶液，在水浴中搅拌8小时。加入50ml的苯以便过滤。将滤液减压蒸除苯、水等挥发性物质。Example 3 Dissolve 2.35g erbium perchlorate in water, then mix 2.1g polyisobutylene bis-succinimide, 0.2g magnesium petroleum sulfonate, 0.3g Siben-80, 6g base oil with the above solution, add 15ml Benzene, stirred in a water bath for half an hour, slowly added dropwise an aqueous solution of 1.7 g of sodium fluoride, and stirred in a water bath for 8 hours. Add 50ml of benzene for filtration. The filtrate was evaporated under reduced pressure to remove volatile substances such as benzene and water.
实例4反应条件同实例1，将氯化镧中的镧分别替换为铈、镨、钕、钐、铕、钆、铽、镝、钬、铒、铥、镱、镥，可得到相应的纳米氟化稀土。The reaction conditions of Example 4 are the same as in Example 1, and the lanthanum in lanthanum chloride is replaced by cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium respectively to obtain the corresponding nanometer fluorine rare earths.
对实例1中所制备的纳米氟化镧在液体石蜡中的最大无卡咬负荷和抗磨性能用四球摩擦磨损试验机进行评价。为了便于对比，对二烷基二硫代磷酸锌(ZDDP)在液体石蜡中的最大无卡咬负荷和抗磨性也进行了测量。抗磨实验的操作条件为：负荷392N，实验时间30min，转速1450rpm。实验结束后，测量钢球的磨斑直径(WSD)，结果列于表1中。The maximum non-seize load and anti-wear performance of the nano-lanthanum fluoride prepared in Example 1 in liquid paraffin were evaluated with a four-ball friction and wear tester. For comparison, the maximum no-seize load and wear resistance of zinc dialkyldithiophosphate (ZDDP) in liquid paraffin were also measured. The operating conditions of the anti-wear test are: load 392N, test time 30min, rotational speed 1450rpm. After the experiment, the wear spot diameter (WSD) of the steel ball was measured, and the results are listed in Table 1.
由上述实验结果可以看出，此类纳米氟化稀土作为润滑油添加剂具有良好的极压性能和抗磨损性能，是一类具有广泛应用前景的润滑油极压、抗磨添加剂。表1最大无卡咬负荷(PB值)和抗磨性能评价结果添加剂 浓度(wt％) PB值(N) WSD(mm)液体石蜡 100 372 0.72It can be seen from the above experimental results that this kind of nano-rare earth fluoride has good extreme pressure performance and anti-wear performance as a lubricating oil additive, and is a kind of extreme pressure and anti-wear additive for lubricating oil with wide application prospects. Table 1 Maximum non-seize load (P B value) and anti-wear performance evaluation results Additive concentration (wt%) P B value (N) WSD (mm) liquid paraffin 100 372 0.72
0.5 686 0.44本发明0.5 686 0.44 Invention
1 735 0.421 735 0.42
2 764 0.442 764 0.44
3 764 0.62ZDDP 1 784 0.503 764 0.62ZDDP 1 784 0.50
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| US6316377B1 (en) * | 1999-09-10 | 2001-11-13 | Battelle Memorial Institute | Rare earth oxide fluoride nanoparticles and hydrothermal method for forming nanoparticles |
| CN100338200C (en) * | 2004-04-14 | 2007-09-19 | 中国石油化工股份有限公司 | Process for preparing lubricating oil additive containing nano microparticles |
| CN100395320C (en) * | 2006-03-15 | 2008-06-18 | 华东理工大学 | Fluorine-containing rare earth nano lubricating oil additive and preparation method thereof |
| CN100494330C (en) * | 2007-05-16 | 2009-06-03 | 龚; | Nano bionic self-organization lubricating oil additive and preparation method thereof |
| CN103540388B (en) * | 2013-10-24 | 2014-12-31 | 大连海事大学 | A kind of FD bearing oil composition, its preparation method and application |
| CN107151571A (en) * | 2017-06-05 | 2017-09-12 | 合肥嘉仕诚能源科技有限公司 | A kind of biomass fuel and preparation method |
| CN108410539B (en) * | 2018-03-01 | 2021-04-27 | 清华大学天津高端装备研究院 | Oil-soluble nano rare earth anti-wear lubricating oil additive and preparation method thereof |
| CN110205185A (en) * | 2019-06-11 | 2019-09-06 | 日生能科技(厦门)有限公司 | A kind of rare earth compound lube oil additive manufacturing method |
| CN111548842A (en) * | 2020-05-21 | 2020-08-18 | 成都玉龙化工有限公司 | Lubricant and preparation method thereof |
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|---|---|---|---|---|
| US4946607A (en) * | 1988-10-10 | 1990-08-07 | Rhone-Poulenc Chimie | Aqueous lubricant dispersions of rare earth halides |
| CN1180079A (en) * | 1995-07-06 | 1998-04-29 | 中国科学院兰州化学物理研究所 | Fatty acid modifying metallic oxide or hydroxide nanometre powder and its preparing method |
| CN1183461A (en) * | 1995-07-06 | 1998-06-03 | 中国科学院兰州化学物理研究所 | Sulfo-organo-compound modified dichalcogenide nm micropowder and preparing method thereof |
-
1998
- 1998-10-08 CN CN98123519A patent/CN1058985C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946607A (en) * | 1988-10-10 | 1990-08-07 | Rhone-Poulenc Chimie | Aqueous lubricant dispersions of rare earth halides |
| CN1180079A (en) * | 1995-07-06 | 1998-04-29 | 中国科学院兰州化学物理研究所 | Fatty acid modifying metallic oxide or hydroxide nanometre powder and its preparing method |
| CN1183461A (en) * | 1995-07-06 | 1998-06-03 | 中国科学院兰州化学物理研究所 | Sulfo-organo-compound modified dichalcogenide nm micropowder and preparing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1218104A (en) | 1999-06-02 |
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Owner name: QINGDAO MODELONG SPECIAL LUBRICATING OIL CO., LTD Free format text: FORMER OWNER: LANZHOU INST. OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES Effective date: 20030912 |
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