Abstract:
The present invention relates to additives for use in lubricant compositions to processes for producing the additives, and to the use of the additives in lubricants and in systems that are lubricated. More specifically, the additive includes a capped particle (10) comprising: (i) one or more core particles (20) wherein the core particle is an inorganic particle having a dimension less than about 5 μm; and (ii) one or more multi-block copolymers (30) attached to the inorganic particles, wherein the multi-block copolymer comprises a) at least one nonpolar polymer block (51 ); b) at least one first polar polymer block (41 ); and c) at least one second polar polymer block (42); wherein the nonpolar polymer block is interposed between the first polar polymer block and the second polar polymer block, the first polar polymer block is attached to the core particle, and at least a portion of the second polar polymer block is not attached to the core particle. When used in a lubricant to lubricate a metallic surface of a workpiece (60), the capped particle preferably adhere to the metallic surface of the workpiece.
Abstract:
A lubricant composition. The lubricant composition includes (a) a phenate, a sulfonate, or both; and (b) a base composition wherein the base composition is (i) a metal carbonate and a metal sulfate, (ii) a metal sulfate and a metal phosphate; (iii) a metal sulfate and a metal carboxylate; (iv) a metal phosphate and a metal carboxylate; or (v) three-way or four-way combination of a metal sulfate, a metal carboxylate, a metal phosphate, and a metal carbonate; and (c) a lubricating oil or a grease.
Abstract:
A composition that includes solid lubricant nanoparticles and an organic medium is disclosed. Also disclosed are nanoparticles that include layered materials. A method of producing a nanoparticle by milling layered materials is provided. Also disclosed is a method of making a lubricant, the method including milling layered materials to form nanoparticles and incorporating the nanoparticles into a base to form a lubricant.
Abstract:
A composition comprising (a) fine spherical particles of an inorganic substance such as alumina, (b) an aqueous adhesive agent such as a petroleum resin emulsion, and water. It is preferred for better effect that the composition further comprises one or more selected from among (c) a wisker, (d) a powder of an inorganic substance in a form of a scaly crystal, (e) a powder of a metal hydroxide or an inorganic substance having bound water, and (f) a lubricant aid. The composition is free from problems of the occurrence of environmental pollution and the risk of misoperation of an automatic machine, which accompany a conventional graphite lubricating and releasing agent, and that of the danger of smoking or firing, which accompanies a conventional lubricating and releasing agent dispersed in an oil, and is useful as an aqueous lubricating and releasing agent for hot or cold forging using a non-graphite inorganic substance, which is free from occurrence of the deposition on a mold and an under fill phenomenon.
Abstract:
A lubricant composition comprising a boric acid additive suspended and/or dispersed in an oil, grease, or polymer base. The inventive lubricant exhibits excellent resilience and load-carrying capacity over a wide range of temperature and use conditions.
Abstract:
A water washable thermally conductive grease useful for thermal coupling of electronic chips and heat sinks in electronic modules comprises a hydrophilic liquid polymer carrier, an antioxidant, and up to 90 weight percent of a microparticulate thermally conductive filler. In a preferred embodiment, the thixotropic dielectric composition further comprises an ionic surfactant to promote wetting/dispersion of the microparticulate filler. The thermally conductive grease is non-corrosive, resistant to shear induced phase destabilization and capable of being washed from module surfaces with aqueous solutions. Substitution of the present hydrophilic based greases for art-recognized solvent washable greases eliminates use of non-aqueous solvents in electronic module processing/reprocessing operations.
Abstract:
Aqueous-based functional products such as household or commercial cleansers, household products, commercial products, and personal care products are thickened or viscosity-modified by the addition of at least one crystalline mixed metal hydroxide of the formula LimDdT(OH)(m+2d+3+n.a)Aa .xH2O, where m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A is at least one anion or negative-valence radical of valence n, where n is 1 or more, (m+2d+3+n.a) is equal to or greater than 3, (m+d) is greater than zero, and xH2O is waters of hydration.
Abstract:
본 발명은 내연기관에 사용되는 엔진 오일 윤활제 조성물에 관한 것으로서, 개선된 연료 절약 및 터보 과급기(turbocharger) 관련 증착을 위하여, 완성된 오일에 1-1000 ppm 몰리브덴을 전달하는 하나 이상의 몰리브덴 함유 화합물, 완성된 오일에 25-650 ppm 인을 전달하는 하나 이상의 인 함유 화합물, 그리고 기능화되거나 되지 않은 하나 이상의 폴리(메타)아크릴레이트 점도 지수 향상제(VI 향상제)를 포함한다. 또한, 본 발명의 조성물은 아민 산화방지제, 페놀 산화방지제 및 재 없는 디치오카바메이트를 포함하는, 개선된 연료 절약을 제공하기 위하여 균형이 잡힌 산화방지 시스템을 포함한다. 또한, 제제화된 오일은 종래의 석신이미드 분산제의 양을 감소하기 위하여 PAMA VI 향상제에 더하여 분산성 폴리(메타)아크릴레이트를 포함할 수 있다.
Abstract:
복층 슬라이딩 부재(51)는 강판으로 이루어진 백플레이트(52)와, 백플레이트(52)의 표면에 일체로 형성된 다공질 금속 소결층(53)과, 다공질 금속 소결층(53)의 빈틈에 충전되고 또한 그 표면에 피복된 합성수지 조성물로 이루어진 슬라이딩층(54)을 가지고 있으며, 합성수지 조성물이 황산바륨5∼30중량%와, 규산마그네슘1∼15중량%와, 인산염1∼25중량%와, 산화티타늄0.5∼3중량%와, 나머지 사불화에틸렌 수지로 이루어진다.