Abstract:
PROBLEM TO BE SOLVED: To provide an economic lubricating composition excellent in heat resistance, load resistance and flame retardancy. SOLUTION: This fluorine-based lubricating composition comprises a fluorine oil and tricalcium phosphate. The tricalcium phosphate is used at 1-40 wt.% to the total composition including the fluorine oil. The lubricating composition excellent in heat resistance and load resistance owing to the fluorine system is obtained safely, easily and economically because a fluororesin conventionally used together with the fluorine oil or a fluorine solvent for dissolving the fluororesin need not be used. The lubricating composition further excellent in friction and abrasion performances is obtained by mixing another lubricating composition comprising a thickener with the lubricating composition containing the tricalcium phosphate and the fluorine oil. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricating grease composition which can reduce the frictional coefficient of a lubricating portion, especially a sliding portion comprising a metal-made sliding material, a resin-made sliding material, especially a glass fiber-reinforced resin-made sliding material, and can elongate the endurance life of the lubricating portion. SOLUTION: This lubricating grease composition is characterized by comprising at least one phosphorous compound selected from the group consisting of phosphates, metaphosphates, diphosphates (pyrophosphates), triphosphates (tripolyphosphates), phosphites, diphosphites, and hypophosphites, a fatty acid metal salt, and preferably further a urea compound. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
Disclosed are high performance grease compositions containing methylfluoroalkylsiloxanes and solid thickeners containing fluorinated polymers.
Abstract:
Adducts of clay, especially of the smectite variety, most especially bentonite, are prepared with an effective amount of at least one activated mixed metal oxide or oxy-hydroxide (AHMMO) formed by dehydrating hydrotalcite or a mixture comprising magnesium oxide and aluminum oxide, or a crystalline mixed metal hydroxide conforming substantially to the formula LimDdT(OH)¿(m+2d+3+n.a)(A?n)a.xH2O where m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents 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 represents excess waters of hydration. These adducts are useful, e.g., in drilling muds and in viscosity modification of a wide variety of fluids.
Abstract:
A lubricating grease having a high dropping point, good stability against oxidation and long life contains a thickener comprising essentially the three components: lithium soap of C12-24 hydroxy fatty acid; lithium phosphate salt produced from phosphoric or phosphorous acid ester and dilithium borate. The amounts of hydroxy fatty acid and phosphoric or phosphorous acid ester are 3-100 parts by weight and 0.05-15 parts by weight per part by weight of boric acid respectively.
Abstract:
Crystalline aluminates of the formula: I. (LiAx)y.2Al(OH)3.nH2O II. Li(R)v_r.2Al(OH)3.nH2O, or III. Mm(R)v_r.(D)w_z2Al(OH)3.nH2O wherein A is one or more anions and/or negative-valence radicals or mixtures thereof; wherein, in formula I, x is a quantity of A ions or radicals sufficient to substantially satisfy the valence requirements of Li; wherein n is zero or the number of waters of hydration; wherein y is a numerical value at least sufficient to maintain the crystalline structure; wherein R is a monocarboxylic acid or dicarboxylic acid of C6 C22, including those which are OH substituted; wherein r is greater than zero and represents the number of R ions in the molecule; wherein v is the valence of R, being monovalent or divalent; wherein M is divalent Zn or Ca cations; wherein D represents inorganic anions of valence 1-3, represented by w; wherein z is equal to or greater than zero and represents the number of D anions; wherein, in formula II, vr represents an amount of R anions to substantially satisfy the valence requirements of Li; wherein, in formula III, r>z and (vr + wz) represents an amount of combined anions, R and A, to substantially satisfy the valence requirements of M; with m representing the number of divalent M cations and having a numerical value in the range of 1 to 4, are found to improve the coefficient of friction and antiwear properties of lubrication fluids subjected to shearing, rubbing, or grinding forces at elevated pressure. Also, useful compositions are prepared by incorporating into organic materials, crystalline lithium aluminates of formula I.
Abstract:
Crystalline aluminates of the formula: I. (LiA x ) y ·2Al(OH)₃·nH₂O wherein A is one or more anions and/or negative-valence radicals or mixtures thereof; wherein, in formula I, x is a quantity of A ions or radicals sufficient to substantially satisfy the valence requirements of Li; wherein n is zero or the number of waters of hydration; wherein y is a numerical value at least sufficient to maintain the crystalline structure; are found to improve the properties of organic materials when incorporated therein.