Abstract:
Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
Abstract:
Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
Abstract:
Disclosed is an effective thermal grease comprising a hyperbranched olefinic fluid and a thermally conductive filler. Property-modifying additives and fillers may also be included. The hyperbranched olefinic fluid is selected to have an average of at least 1.5 methine carbons per oligomer molecule and at least 40 methine carbons per one thousand total carbons. The thermal grease exhibits a flash point of 180° C. or higher, a pour point of 0° C. or lower, and a kinematic viscosity at 40° C. of no more than 200 cSt (0.0002 m 2/s). The composition may offer improved thermal conductivity, reduced tendency to migrate, and lower cost when compared with many other thermal greases, including silicone-based thermal greases.
Abstract:
The present invention provides a thermally conductive grease composition which scarcely increases in hardness during high-temperature heating and has a minimized reduction in growth, containing: (A) an organopolysiloxane including at least two alkenyl groups per molecule, the 25° C. kinetic viscosity being 5,000 to 100,000 mm2/s; (B) a hydrolysable methyl polysiloxane, trifunctional at one terminus, represented by general formula (1) (R1 is a C1-6 alkyl group, and a is an integer 5 to 100); (C) a thermally conductive filler having a thermal conductivity of 10 W/m·° C. or greater; (D) an organohydrogenpolysiloxane containing two to five hydrogen atoms directly bonded to a silicon atom (Si—H group) per molecule; (E) an adhesion promoter having a triazine ring and at least one alkenyl group per molecule; and (F) a catalyst selected from the group consisting of platinum and platinum compounds.
Abstract:
The present invention provides a highly thermal conductive compound which has a high thermal conductivity, has a high consistency and a good coating workableness, and is excellent in thermal stability at a high temperature. A highly thermal conductive compound containing (A) 85 to 97% by mass of an inorganic powder filler, (B) 2 to 15% by mass of a base oil, and (C) 0.001 to 10% by mass of a compound represented by Y—(—R2—COO—)n—R1—X (wherein R1 and R2 each is a bivalent hydrocarbon group having a linear or branched chain having 1 to 36 carbon atoms, n is 1 to 15, X and Y each is at least one substituent selected from the group consisting of a carboxyl group and a hydroxyl group or a hydrogen atom, and at least one of X and Y is a carboxyl group or a hydroxyl group.
Abstract translation:本发明提供一种高导热性,高导热性,高稠度,良好的涂布加工性,并且在高温下的热稳定性优异。 一种高导热性化合物,其含有(A)85〜97质量%的无机粉末填料,(B)2〜15质量%的基油,(C)0.001〜10质量% Y - ( - R2-COO-)n-R1-X(其中R1和R2各自为具有1至36个碳原子的直链或支链的二价烃基,n为1至15,X和Y各自为 至少一个选自羧基和羟基或氢原子的取代基,X和Y中的至少一个是羧基或羟基。
Abstract:
The present invention discloses a nanodiamond thermal grease, which comprises a nanodiamond powder, a thermal powder and a substrate. The nanodiamond powder has volume percentage of 5% to 30%, the thermal powder has volume percentage of 40% to 90%, and the substrate has volume percentage of 5% to 30%. The nanodiamond powder and the thermal powder are distributed uniformly in the substrate to form the nanodiamond thermal grease having high thermal conductivity.
Abstract:
A feeding lubricant for use on a welding electrode comprises about 10 to 40 wt. % of at least one soap-based lubricant, about 40 to 90 wt. % of at least one solid particulate lubricant selected from MoS2, WS2, ZnO, graphite and PTFE and up to 20 wt. % of at least one optional additional particulate lubricant ingredient.
Abstract:
A composition is disclosed which comprises an aryl perfluoropolyether, optionally a halogenated oil, and further optionally a thickening agent. The composition can be used as a lubricant itself or as an additive to an oil or grease lubricant and can withstand temperatures higher than 300° C. without decomposition. The halogenated oil can be a perfluoropolyether, a fluorosilicone, a polytrifluorochloroethylene, or combinations of two or more thereof. The thickening agent can be finely divided silica, boron nitride, clay, soap, poly(tetrafluoroethylene), clay, talc, silica, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof.
Abstract:
An invention of a heat-dissipating grease composition characterized by comprising of the following components (A)-(C) is disclosed. Component (A): 100 mass parts of organopolysiloxane wherein a thixotropicity degree α is 1.03-1.50, a viscosity is 100-1,000,000 mPa·s at 25° C.; in this regard, the thixotropicity degree α is η1/η2. Herein, η1 is a measured viscosity at 25° C. measured by a B type rotation viscometer at 6 rpm of a rotor, η2 is a measured viscosity at 25° C. measured by a B type rotation viscometer at 12 rpm of the rotor. Component (B): 5-200 mass parts of hydrolysable organopolysiloxane having three functional groups at one end represented by the following general formula (1); R1 in the formula is an alkyl group having 1-6 carbon atoms, R2 is at least one kind of groups having 1-18 carbon atoms selected from a group consisting of substituted or unsubstituted monovalent hydrocarbon groups, a is an integer of 5-120. Component (C): 200-4,000 mass parts of a thermoconductive inorganic filler having an average particle diameter of 0.1-100 μm and 0.01-50 m2/g of a specific surface.
Abstract:
The present invention provides a highly thermal conductive compound which has a high thermal conductivity, has a high consistency and a good coating workableness, and is excellent in thermal stability at a high temperature.A highly thermal conductive compound containing (A) 85 to 97% by mass of an inorganic powder filler, (B) 2 to 15% by mass of a base oil, and (C) 0.001 to 10% by mass of a compound represented by Y—(—R2—COO—)n—R1—X (wherein R1 and R2 each is a bivalent hydrocarbon group having a linear or branched chain having 1 to 36 carbon atoms, n is 1 to 15, X and Y each is at least one substituent selected from the group consisting of a carboxyl group and a hydroxyl group or a hydrogen atom, and at least one of X and Y is a carboxyl group or a hydroxyl group; in the case where n is 2 to 15, the moiety of (—R2—COO—)n in the formula (1) may be a copolymer group composed of two or more constitutional units (—R2—COO—) wherein R2 is a bivalent hydrocarbon group different from one another).