I. (LiA x ) y ·2Al(OH) 3 ·nH 2 O II. Li(R) v r 2Al(OH) 3 ·nH 2 O, or III. M m (R) v r (D) w z 2Al(OH) 3 ·nH 2 O
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 C 6 -C 22 , 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 1.
Abstract:
High dropping-point lithium-complex grease composition naving improved anti-noise properties, comprising a lubricating oil and the following components: (a) at least one lithium soap selected from the group consisting of the lithium salts of C 10 to C 34 fatty acids and C 12 to C 24 hydroxy fatty acids, (b) at least one lithium salt selected from the group consisting of the dilithium salts of C 4 to C 12 aliphatic dicarboxylic acids, the lithium salts of boric acids, and the lithium salts of aromatic hydroxy carboxylic acids, and (c) a high-molecular viscosity-index improver, and/or succinimide-type dispersant and/or metal salt detergent.
Abstract:
Asbestiform crystalline calcium M phosphate, where M is sodium or lithium, typically having a length to average diameter ratio of at least 5:1, can be prepared by forming a melt of a source of oxygen, calcium, phosphorus and M having a mole ratio of about 15 percent to about 30 percent M2O, about 48 percent to about 60 percent P2O5 and about 20 percent to about 37 percent CaO, cooling the melt within the range of about 500 DEG C. to about 750 DEG C. for a sufficient time to permit blocks of calcium M phosphate to form, and fiberizing the blocks into the asbestiform crystals. Such asbestiform crystaline calcium M phosphates are useful to prepare composites of organic polymeric materials.
Abstract:
High dropping-point lithium-complex grease composition having improved extreme pressure properties, comprising a lubricating oil and the following components:
(a) at least one lithium soap a C 12 to C 24 hydroxy fatty acid, (b) at least one lithium salt of a boric acid, and (c) at least one metal salt selected from the group consisting of
1) a potassium salt of a boric acid, 2) a sodium salt of a boric acid, 3) an alkaline earth metal salt of a boric acid, and 4) a zinc salt of a boric acid.
Abstract:
High dropping-point lithium-complex grease composition naving improved anti-noise properties, comprising a lubricating oil and the following components:
(a) at least one lithium soap selected from the group consisting of the lithium salts of C 10 to C 34 fatty acids and C 12 to C 24 hydroxy fatty acids, (b) at least one lithium salt selected from the group consisting of the dilithium salts of C 4 to C 12 aliphatic dicarboxylic acids, the lithium salts of boric acids, and the lithium salts of aromatic hydroxy carboxylic acids, and (c) a high-molecular viscosity-index improver, and/or succinimide-type dispersant and/or metal salt detergent.
Abstract:
Asbestiform crystalline calcium M phosphate, where M is sodium or lithium, typically having a length to average diameter ratio of at least 5:1, can be prepared by forming a melt of a source of oxygen, calcium, phosphorus and M having a mole ratio of about 15 percent to about 30 percent M 2 0, about 48 percent to about 60 percent P 2 O 5 and about 20 percent to about 37 percent CaO, cooling the melt within the range of about 500°C. to about 750°C. for a sufficient time to permit blocks of calcium M phosphate to form, and fiberizing the blocks into the asbestiform crystals. Such asbestiform crystalline calcium M phosphates are useful to prepare composites of organic polymeric materials.
Abstract translation:石棉状结晶钙中号磷酸盐,其中M是钠或锂,典型地具有的长度至少为5的平均直径之比为2:1,可以通过形成的氧,钙,磷源的熔体和具有摩尔比M来制备 的约15%至约30%的M 2 O,约48%至约60%的P 2 O 5和大约20%至约37%的CaO,将熔融物冷却约500℃的范围内,以约750℃足够长的时间 以允许钙磷酸盐的块,以形成和纤维化块到石棉状晶体。 搜索石棉状晶形钙中号磷酸盐是制备有机聚合物材料的复合材料是有用的。
Abstract:
Disclosed are grease compositions containing a liquid fluorinated polymer and a thickening agent containing hexagonal lattice boron nitride powder having a bimodal particle size distribution as well as grease compositions containing a liquid fluorinated polymer and a thickening agent containing hexagonal lattice boron nitride powder and a solid fluorinated polymer.
Abstract:
Organosilicone pastes and greases including at least one oily diorganopolysiloxane polymer with a dynamic viscosity at 25 °C of at least 500 mPa.s, and at least one alkali-metal or alkaline-earth metal carbonate, but no actual thixotropic agent, wherein said carbonate has a particle size of at most 0.5 νm and a high BET specific surface area of more than 5 m2/g, and is present in an amount of at least 20 wt % based on the total composition. The preparation method is carried out at a low temperature, e.g. 5-40 °C.
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:
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.