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【正题名】: Preparation and tribological properties of nanometer magnesium borate as lubricating oil additive
【作者】: Z.S.Hu;R.Lai;F.Lou;L.G.Wang;Z.L.Chen;G.X.Chen;J.X.Dong
【刊名】: Wear
【年卷期】: 2002, vol.252, no.5-6
【出版年】: 2002
【ISSN】: 0043-1648
【页码】: p.370-374
【分类号】: TH117
【关键词】: Nanoparticle;Magnesium borate;Tribology
【正文语种】: eng
【文摘】:Nanoparticle magnesium borate with a particle size of about 10 nm was prepared using ethanol supercritical fluid drying technique and was characterized with TEM, XRD and X-ray small angle scattering.Tribological properties of the nanoparticle magnesium borate, using as lubricating oil additive, were evaluated using a four-ball and a block-on-ring tribotester.The wear scar was characterized with SEM and XPS.Results indicate that the wear resistance and load carrying capacity of the 500 SN base oil were improved and the friction coefficient of the oil was decreased by the additive.FeB were formed on sliding surface.【正题名】: Synthesis and tribological properties of ferrous octoxyborate as antiwearand friction-reducing additive of lubricating oil
【作者】: Z.S.Hu;Y.Yie;L.G.Wang;G.X.Chen;J.X.Dong
【刊名】: Tribology letters
【年卷期】: 2000, vol.8, no.1
【出版年】: 2000
【ISSN】: 1023-8883
【页码】: p.45-50
【分类号】: TH117
【关键词】: Synthesis;Ferrous octoxyborate;Tribology;Boron-containing compound
【正文语种】: eng
【文摘】:An oil-soluble compound containing ferrous iron and boron-ferrousoctoxyborate was synthesized.The antiwear and friction-reducing properties of the compound as alubricating oil additive were evaluated using a four-ball and a block-on-ring tribotester.Results indicated that both the wear resistance and the load-carrying capacity of a 500 SN base oil were improved and its friction coefficient was decreased by the additive.The wear scar, alter being cleaned using an ultrasonic bath in ligroin and in distilled water, was characterized with SEM and XPS.Diboron trioxide, FeB and Fe{sub}2B were all found to have been deposited on the wear-scar surface.It was this deposition that provided the oil with excellent antiwear and friction-reducingproperties.【正题名】: Preparation of magnesium borate succinimide and its characteristics as alubricating oil additive
【作者】: Yonggang Shi;Junxiu Dong
【刊名】: Lubrication Science
【年卷期】: 2000, vol.12, no.4
【出版年】: 2000
【ISSN】: 0954-0075
【页码】: p.357-361
【分类号】: TH117
【关键词】: Succinimide;Magnesium borate;Antioxidant;Acid neutralisation;Antifriction;Antiwear;Lubricating oils;Chemistry
【正文语种】: eng
【文摘】:Succinimide has for a long time been widely used for ashle dispersants in engine lubricating oils.However, this kind of dispersant does not have particularly good antioxidant, antifriction, antiwear or acid neutralisation properties.In this paper, a method is suggested for modifying succinimide so as to obtain improved antioxidant, acid neutralisation, antifriction, and antiwear properties.Magnesium borate cannot be diolved in mineral lubricating oil.In the presence of succinimide, however, it will exist in a lubricating oil in the form of acolloid or complex.Therefore, in the present work, magnesium oxide, boric acid, and water were mixed together with succinimide.In the reaction proce, some of the magnesium borate formed in situ will be surrounded by succinimide, forming stable colloids;the remainder will react with thesuccinimide, forming well distributed complexes in the lubricating oil.The presence of water is very important for this proce.At least four moles of water are needed for one mole of magnesium borate.The resulting material has been evaluated as a lubricating oil additive.The experiments have shown that this kind of material poees good antioxidant, acid neutralisation, antifriction,and antiwear properties, apparently due to the introduction of magnesium borate.The introduction of the magliesium borate does not influence the good dispersant properties of the succinimide.【正题名】: A study of N and S heterocyclic compound as a potential lubricating oil additive
【作者】: Junyan Zhang;Weimin Liu;Qunji Xue;Tianhui Ren
【刊名】: Wear
【年卷期】: 1999, vol.224, no.1
【出版年】: 1999
【ISSN】: 0043-1648
【页码】: p.160-164
【分类号】: TH117
【关键词】: Lubricant additive;Wear tests;Surface analysis
【正文语种】: eng
【文摘】:S-[2-(2-hydroxygenacetyl)thiobenzothiazol-1-yl]pentanyl xanthates waynthesized as potential lubricating oil additive.The friction and wear behaviors of thesynthesized compound as an additive in liquid paraffin were evaluated with a four-ballmachine.Thetribochemical reaction of the additive with a metal surface was investigated by X-ray photoelectronspectroscopy.It was found that the novel compound as an additive in liquid paraffin was effectivein improving the tribological performance.【申请号】:EP89305805A
【申请日期】:19890608
【公开（告）号】:EP0347103A1
【公开（告）日期】:19891220
【主分类号】:C10M159/20
【副分类号】:C10M159/20,C10M159/22,C10M159/24,C10N030/04,C10N070/00
【优先权】:19880614-GB8814009
【国家代码】:EP
【发明人】:OCONNOR SEAN PATRICK,CRAWFORD JOHN,CANE CHARLES
【申请人】:BP CHEMICALS ADDITIVES
【发明名称】:A proce for the production of a lubricating oil additive concentrate.【摘要】:A proce for the production of a lubricating oil additive concentratehaving a TBN greater than 300 which proce comprises reacting at elevated temperature component(A)a defined mixture selected from defined sulphurised or non-sulphurised acids or calcium saltsthereof，component(B)an alkaline earth metal base added either in a single addition or in aplurality of additions at intermediate points during the reaction，component(C)at least onecompound which is(i)water，(ii)a polyhydric alcohol having 2 to 4 carbon atoms，(iii)a di-(C3or C4)glycol，(iv)a tri-(C2-C4)glycol，(v)a mono-or poly-alkylene glycol alkyl ether of theformula(I)R(OR)xOR(I)wherein R is a C1 to C6 alkyl group，Ris an alkylene group，R is hydrogen or a C1 to C6 alkyl group and x is an integer from 1 to 6，(vi)a C1 to C20monohydric alcohol，(vii)a C1 to C20 ketone，(viii)a C1 to C10 carboxylic acid ester，or(ix)aC1 to C20 ether，component(D)a lubricating oil，component(E)carbon dioxide added subsequentto the，or each，addition of component(B)，component(F)a defined carboxylic acid orderivative，component(G)at least one compound which is(i)an inorganic halide or(ii)anammonium alkanoate or a mono-，di-，tri-or tetra-alkyl ammonium formate or alkanoate providedthat when component(G)is(ii)，component(F)is not an acid chloride，the weight ratios of allcomponents being such as to produce a concentrate having a TBN greater than 300.【欧洲主分类号】:C10M159/20
【欧洲副分类号】:C10M159/22,C10M159/24
【
同
族
专利】:AT118240-19950215,AU630355-19921029,AU3641489-19891221,DE68921024-19950323,DE68921024-19950601,EP0347103-19891220,JP2034690-19900205 【申请号】:EP90402981A
【申请日期】:19901023
【公开（告）号】:EP0425367A1
【公开（告）日期】:19910502
【主分类号】:C10M159/20
【副分类号】:C10M159/20,C10M163/00,C10N010/02,C10N070/00
【优先权】:19891026-FR8914053
【国家代码】:EP
【发明人】:BOURGOGNON HENRI,HOORNAERT PIERRE,REY CLAUDE,RODES CHRISTIAN
【申请人】:ELF AQUITAINE
【发明名称】:Overbased lubricating oil additive containing a copper derivate or acopper and boron derivate，method of preparation and compositions containing said additive.【摘要】:The oxidation-promoting effect of the overbased additives can beattenuated or even eliminated by incorporation into the overbased additive of a copper carboxylateoriginating from aliphatic carboxylic acids containing a linear or branched C7-C10 chain.Thesecopper carboxylates can also be employed in the form of combination with a boron derivative.【欧洲主分类号】:C10M159/20
【欧洲副分类号】:C10M163/00
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同
族
专利】:EP0425367-19910502,ES2045856-19940116,FR2653780-19910503,JP3153794-19910701 【申请号】:EP94306507A
【申请日期】:19940901
【公开（告）号】:EP0643126A2
【公开（告）日期】:19950315
【主分类号】:C10M159/22A
【副分类号】:C10M159/22A
【优先权】:19930910-GB9318810
【国家代码】:EP
【发明人】:CANE CHARLES,COOK STEPHEN JAMES
【申请人】:BP CHEMICALS ADDITIVES
【发明名称】:Highly overbased lubricating oil additive concentrates，theirpreparation and use.【摘要】:An additive concentrate having a TBN greater than 300 suitable forincorporation into a finished lubricating oil composition comprising:-(I)a lubricating oilsoluble sulphurised or non-sulphurised alkaline earth metal hydrocarbyl phenate derived either froma hydrocarbyl phenate or its precursors and modified by reaction to incorporate:(i)analdehyde，and(ii)from greater than 2 to le than 40% by weight based on the weight of theconcentrate of either(a)at least one carboxylic acid having the formula:-wherein R is aC10 to C24 alkyl or alkenyl group and R is either hydrogen，a C1 to C4 alkyl group or a-CH2-COOH group，or an anhydride or ester thereof，or(b)a di-or polycarboxylic acid containingfrom 36 to 100 carbon atoms or an anhydride or ester thereof，and(II)a lubricating oil，wherein the amount of lubricating oil(II)in the additive concentrate is such that the ratio of theweight of the additive concentrate to the weight of the hydrocarbyl phenate or its precursors fromwhich the modified sulphurised or non-sulphurised phenate is derived is at least 3.0.【欧洲主分类号】:C07G017/00
【欧洲副分类号】:C10M159/22
【同族专利】:EP0643126-19950315,JP7197066-19950801
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