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    DIESEL ENGINE ANTIFREEZE COMPOSITION
    11.
    发明专利
    DIESEL ENGINE ANTIFREEZE COMPOSITION 未知

    公开(公告)号：CA2333046C

    公开(公告)日：2007-02-06

    申请号：CA2333046

    申请日：1999-05-21

    Applicant: ASHLAND INC

    Inventor： TURCOTTE DAVID E ,  LOCKWOOD FRANCES E

    IPC: C09K5/20 ,  C02F5/10 ,  C23F11/08

    Abstract: The present invention provides heavy duty long life corrosion inhibition formulations and compositions for inhibiting mineral scale and the corrosion of metals particularly the cavitation corrosion of aluminu m in the presence of aqueous liquids. The combination of a mixture of polymeric polycarboxylates, azoles, a combination of nitrite and nitrate salts, phosphates, stabilized silicates and transition metal compounds provide a synergistic protective effect against the cavitation corrosion of aluminum in aqueous liquids reducing the corrosion rate and is effective at relatively low concentrations and varying pH ranges . The addition of selected polymeric polycarboxylates not only significantly reduces glycol based coolant cavitation erosion-corrosion, hea t rejecting aluminum corrosion, and hard water precipitates and scale, it has been discovered that polymeric polycarboxylates in combination with siloxane stabilized silicates enhance secondary silicate stabilization leading to improvement in an aluminum corrosion protection and coolant life when utilized with selected amounts of the above-identified additives. The formulations are particularly suitable for automotive applications.

    Preparation of stable carbon nanotube dispersions in liquids
    14.
    发明专利
    Preparation of stable carbon nanotube dispersions in liquids 未知

    公开(公告)号：NZ533941A

    公开(公告)日：2006-09-29

    申请号：NZ53394102

    申请日：2002-12-06

    Applicant: ASHLAND INC

    Inventor： LOCKWOOD FRANCES E ,  ZHANG ZHIQIANG

    IPC: C10M125/02 ,  C10M141/00 ,  C10M171/06 ,  D01F9/127 ,  D01F9/12

    Abstract: Disclosed is a method of preparing a stable dispersion of carbon nano particles in a liquid, comprising the steps of: (a) dissolving a dispersant comprising a surfactant having a low hydrophile-lipophile balance (HLB) value of 8 or less in an amount of from 0.001 to 30 percent, into a major amount of a liquid medium selected from mineral oil, hydrogenated oil, vegetable oil, synthetic oil and combinations thereof, forming a dispersant liquid medium, (b) adding carbon nano material having an aspect ratio of from 500 to 5000, in an amount of from 0.01 to 10.0 percent by weight, into the dispersant liquid medium with mechanical agitation, and (c) forming a uniform suspension of colloidal size solid particles.

    ENHANCING THERMAL CONDUCTIVITY OF FLUIDS WITH GRAPHITE NANOPARTICLES AND CARBON NANOTUBE
    16.
    发明专利
    ENHANCING THERMAL CONDUCTIVITY OF FLUIDS WITH GRAPHITE NANOPARTICLES AND CARBON NANOTUBE 未知

    公开(公告)号：CA2487340A1

    公开(公告)日：2003-12-24

    申请号：CA2487340

    申请日：2002-05-30

    Applicant: ASHLAND INC

    Inventor： LOCKWOOD FRANCES E ,  ZHANG ZHIQIANG

    IPC: C10M125/02 ,  C10M141/00 ,  C10M171/06

    Abstract: Fluid compositions that have enhanced thermal conductivity, up to 250% great er than their conventional analogues, and methods of preparation for these flui ds are identified. The compositions contain at a minimum, a fluid media such as oil or water, and a selected effective amount of carbon nanomaterials necessary to enhance the thermal conductivity of the fluid. One of the preferred carbon nanomaterials is a high thermal conductivity graphite, exceeding that of the neat fluid to be dispersed therein in thermal conductivity, and ground, milled, or naturally prepared with mean particle size less than 500 nm, and preferably less than 200nm, and most preferably less than 100nm. The graphite is dispersed in the fluid by one or more of various methods, including ultrasonication, milling, and chemical dispersion . Carbon nanotube with graphitic structure is another preferred source of carb on nanomaterial, although other carbon nanomaterials are acceptable. To confer long term stability, the use of one or more chemical dispersants is preferre d. The thermal conductivity enhancement, compared to the fluid without carbon nanomaterial, is somehow proportional to the amount of carbon nanomaterials (carbon nanotubes and/or graphite) added.

    20.
    发明专利
    未知

    公开(公告)号：BR9802889A

    公开(公告)日：1999-10-05

    申请号：BR9802889

    申请日：1998-01-09

    Applicant: ASHLAND INC

    Inventor： TURCOTTE DAVID E ,  LOCKWOOD FRANCES E

    IPC: C09K5/10 ,  C09K5/20 ,  C23F11/08 ,  C23F11/173 ,  C23F14/02

    Abstract: The present invention provides corrosion inhibition formulations and compositions for inhibiting mineral scale and the corrosion of metals particularly the cavitation corrosion of aluminum in the presence of aqueous liquids. The combination of a mixture of polymeric polycarboxylates, azoles, nitrate salts, phosphates, stabilized silicates and transition metal compounds provide a synergistic protective effect against the cavitation corrosion of aluminum in aqueous liquids reducing the corrosion rate and is effective at relatively low concentrations and varying pH ranges. The addition of selected polymeric polycarboxylates not only significantly reduces glycol based coolant cavitation erosion-corrosion, heat rejecting aluminum corrosion, and hard water precipitates and scale, it has been discovered that polymeric polycarboxylates in combination with siloxane stabilized silicates enhance secondary silicate stabilization leading to improvement in aluminum corrosion protection and coolant life when utilized with selected amounts of the above-identified additives. The formulations are particularly suitable for automotive applications.

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