Abstract:
본발명은불포화또는포화지방산의아민염 하나이상이베이스오일및 증점제를포함하는그리스베이스물질에혼입되고, 바람직하게는하기화학식 (1) 의지방산아민염 하나이상이혼입되는, 수지윤활에사용하기위한그리스조성물에관한것이다: RCOOR'NH(1) [식중, (i) R 은 15 내지 21 개의탄소원자를갖는불포화탄화수소기이고, R' 은 8 내지 22 개의탄소원자를갖는포화또는불포화선형또는분지형탄화수소기이거나; (ii) R 은 5 내지 21 개의탄소원자를갖는선형포화탄화수소기이고, R' 은 16 내지 18 개의탄소원자를갖는불포화탄화수소기임]. 본발명의그리스조성물은수지와수지, 또는수지와다른물질예컨대금속사이의윤활성을증진시킨다.
Abstract:
A lubricating grease composition includes a grease containing a base oil and a thickening agent consisting of a mixture of tricalcium phosphate represented by the formula Ca3(PO4)2 and a urea compound and, incorporated as additives in the grease, (A) a sulfurized molybdenum dialkyldithiocarbamate represented by the formula wherein R and R each independently represents a group selected from the group consisting of alkyl groups having from 1 to 24 carbon atoms; m is 0 or an integer of from 1 to 3; and n is an integer of from 1 to 4; provided that m+n=4 and (B) triphenyl phosphorothionate represented by the formula
Abstract:
An overbased calcium sulfonate grease composition comprising a reduced amount of overbased calcium sulfonate, calcium hydroxyapatite, base oil, one or more converting agents, and one or more complexing acids if a complex grease is desired. The calcium sulfonate grease composition improves thickener yield and expected high temperature utility as demonstrated by dropping point. A method of making the composition comprising the steps of mixing the calcium sulfonate and base oil, adding the calcium carbonate either before or after conversion, adding one or more converting agents, and adding one or more complexing acids. All or a portion of one or more of the complexing acids may be added with or prior to the one or more converting agents.
Abstract:
An overbased calcium sulfonate grease composition comprising a reduced amount of overbased calcium sulfonate, calcium hydroxyapatite, base oil, one or more converting agents, and one or more complexing acids if a complex grease is desired. The calcium sulfonate grease composition improves thickener yield and expected high temperature utility as demonstrated by dropping point. A method of making the composition comprising the steps of mixing the calcium sulfonate and base oil, adding the calcium carbonate either before or after conversion, adding one or more converting agents, and adding one or more complexing acids. All or a portion of one or more of the complexing acids may be added with or prior to the one or more converting agents.
Abstract:
Embodiments of the invention include compositions of calcium/lithium complex greases containing calcium/lithium soaps having a high calcium fraction and complexing agents, encapsulated constant velocity shafts containing such lubricating greases and the use of the lubricating greases in encapsulated shafts of constant velocity shafts.
Abstract:
The present invention aims to offer a lubricating composition with excellent heat resistance, mechanical stability, water resistance, corrosion resistance, load resistance and flame resistance. To this end the present invention suggests that from 2 to 68% by weight of tricalcium phosphate relative to the total composition is added to a base oil, which may be a mineral oil and/or a synthetic oil. Surfactants are further added, and the whole is thoroughly mixed and kneaded to give a semi-solid lubricating composition. For the surfactants, non-ionic surfactants are most suitable, and fatty acid esters such as glycerine fatty acid esters, sorbitan fatty acid esters and sucrose fatty acid esters may be used. The amount used is from 0.2 to 18% by weight relative to the total composition.
Abstract:
A grease composition containing: (a) the reaction product of: (i) a calcium containing overbased organic acid; and (ii) at least one acid producing compound or derivatives thereof selected from the group consisting of: (1) a non-polymeric hydrocarbyl substituted dicarbonyl derivative selected from the group consisting of an acid, an ester, a salt, an anhydride, ester-acid, acid-salt and mixtures thereof; (2) a copolymer derived from monomers containing (1) an olefin; and (2) an unsaturated dicarboxylic acid anhydride or derivatives thereof; and (3) an inorganic acid containing about 2 or more acidic hydrogens; and (b) an oil of lubricating viscosity, wherein the overbased calcium sulphonate contains colloidally dispersed calcium carbonate is selected from the group consisting of calcite, vaterite and mixtures thereof. The invention further relates to the process to make the composition and its use in greases to increase water resistance.
Abstract:
The present invention provides a rolling apparatus comprising a movable member which can undergo rotary or linear motion, a support member which carries the movable member, rolling elements which are interposed between the movable member and the support member and which roll with the movement of the movable member, and a lubricant composition which is disposed between the movable member on which the rolling elements roll and the support member, wherein the lubricant composition is a mixture of (1) a thickening agent which is at least one selected from the group consisting of a solid fluoropolymer, a lamellar mineral powder, an ultrafinely particulate organic material, an organic solid lubricant and an ultrafinely particulate inorganic material, and (2) a base oil comprising a liquid fluorinated polymer oil.
Abstract:
The present invention provides a grease composition which is excellent in peel resistance, not to mention lubricity, as compared with the prior art products. A novel grease composition for rolling bearing is provided, comprising a base oil, an extender, an inorganic compound-based filler having an average particle diameter of not more than 2 &mgr;m and zinc dithiocarbamate.