Abstract:
High-temperature inhibitor materials for use with electrical connections in energy transmission and distribution systems where operating temperatures exceed 150°C. The high- temperature inhibitor materials comprise base oils and conductive particles, wherein the high-temperature inhibitor is stable at temperatures above 150°C.
Abstract:
The present invention relates to the use of a calcium sulfonate thickener in a grease (25), for providing the grease with detergent resistance, such that the grease retains lubricating ability when contaminated with the cleaning solution. The grease is used to lubricate a rolling element bearing (5) and/or a seal (30) comprising a contact lip (35), which is mounted in a machine that is subject to cleaning with a solution comprising a detergent.
Abstract:
The invention relates to a food-grade high-temperature lubricant, in particular a high-temperature oil or a high-temperature grease comprising the following components: a) at least one oil selected from a trimellitic acid ester or a mixture of various trimellitic acid esters, alkyl aromates, preferably an aliphatically substituted naphthalene or estolidene; b) a hydrogenated or fully hydrogenated polyisobutylene or a mixture or hydrogenated or fully hydrogenated polyisobutylene; and c) additives, individually or in combination with each other. In the case of the high-temperature grease, a thickening agent is added.
Abstract:
A composition made by admixing a major amount of base oils of lubricating viscosity and minor amounts of additives. The additives can include a viscosity modifier, a dispersant, a friction modifier, an anti-oxidant, a suppressant, a tackifier, and thickeners. The dispersant can be a dissolved powered styrene-ethylene/propylene-block copolymer and the thickeners can be fumed silicia. The dispersants and the thickeners are pulverized and dissolved in the composition to provide for inhibition of oil separation during storage.
Abstract:
A thermally conductive silicone grease composition comprises: (A) an organopolysiloxane represented by the following general formula: wherein each R 1 is independently selected from monovalent hydrocarbon groups, each X is independently selected from monovalent hydrocarbon groups or alkoxysilyl-containing groups of the following general formula: -R 2 -SiR 1 a (OR 3 ) (3-a) wherein R 1 is defined as above, R 2 is an oxygen atom or an alkylene group, R 3 is an alkyl group, a is an integer ranging from 0 to 2, m is an integer equal to or greater than 0, and n is an integer equal to or greater than 0; (B) a thermally conductive filler; and (C) an aluminum-based or titanium-based coupling agent. The composition exhibits excellent heat resistance and reduced oil bleeding.
Abstract:
The present invention relates to a non-hydroxide grease composition comprising a base oil and a thickener which comprises amorphous hydrophilic silicon oxide particles and one or more metal salts of different organic acids, wherein the silicon oxide particles have a BET specific surface area of at least 50 m 2 /g and wherein the amount of the metal salt(s) is 4- 25% by weight, based on the total weight of the grease composition. The present invention further relates to a method for manufacturing said grease composition and the use of said grease composition for lubricating a bearing and in couplings and gearings.
Abstract:
The present disclosure relates to greases containing metal sulfonate thickeners. In one example the thickener may be a calcium sulfonate thickener. In other examples grease may contain a combination of a metal sulfonate thickener and another thickener, such as a metal complex soap grease, detergent, or non-soap thickener. The grease may be formulated to meet specific performance criteria relevant to lubrication of a roller cone drill bit in downhole conditions. The disclosure also relates to a roller cone drill bit containing a grease of the disclosure.
Abstract:
A method for joining tubulars that includes preparing a fast-setting epoxy compound, wherein the preparing comprises: mixing a first micro-crystalline filler into an epoxidized glycerol fatty ester, mixing a titanium oxide, a first talc, and a flatting agent into the first mixture, mixing a hydrocarbon resin into the second mixture, and mixing a hardenable epoxide containing liquid to form an epoxy base. A second micro-crystalline filler, a second talc, and a glycidyl ether are mixed into a phthalocyanine, a hybrid reactive polyamide is mixed into this mixture, a modified aliphatic amine is mixed into the resulting mixture, and a methylamino accelerator is added to form an epoxy accelerator. Substantially equal portions of the epoxy base and the epoxy accelerator are mixed to form the fast-setting epoxy compound.
Abstract:
Fluorinated lubricants of formula T-O-[A-B] z -[A-B'] z' -A-T' (I) wherein: A = -(X) a -O-A'-(X') b - A' is a perfluoropolyether chain comprising units (CF 2 O), (CF 2 CF 2 O), (CF 2 CF 2 CF 2 O), (CF 2 CF 2 CF 2 CF 2 O); X, X' = -CF 2 -, -CF 2 CF 2 -; a, b = 0 or 1; B derives from olefins, of which at least one homopolymerizable by radical route, of formula: -[(CR 1 R 2 -CR 3 R 4 ) j (CR 5 R 6 -CR 7 R 8 ) j ' ]- (Ia) wherein j = 1-5, j'= 0-4 and 2 1 -R 8 = halogen, H, C 1 -C 6 (per)haloalkyl, C 1 -C 6 alkyl, C 1 -C 6 oxy(per)-fluoroalkyl; z ≥ 2; z' is 0 or an integer; z, z' are such that the number average molecular weight of the polymer of formula (I) is in the range 500-500,000; B'= (Ia) but at least one of R 1 -R 8 has a meaning different than that in B and 2 ≤(j+j') 1 -C 3 perfluoroalkyl, C 1 -C 6 alkyl and compositions thereof.
Abstract:
An aqueous based functional system contains a stable fluid polymer suspension (FPS) thickening agent of a polysaccharide, polyethylene glycol (PEG), and hydrated thickening silica. The functional systems may be formulations of personal care excluding oral care, household care, oil field servicing fluids, Civil Engineering servicing fluids, paper coatings, construction fluids, ceramic glazes, foods, firefighting retardants, mineral processing, aqueous based coatings, building materials, construction, pharmaceuticals, medical care, paper making process, and paper coating. The FPS provides to the functional system comparable or better rheology and viscosity properties as compared to when using similar thickening agents in dry, solid form. A method of preparing the aqueous based functional system is also provided by adding a sufficient amount of a stable FPS that is compatible with the functional system to the system to thicken the functional system.