Abstract:
PROBLEM TO BE SOLVED: To provide a protective film treating agent capable of forming, by a simple method for attaching it to the surface of a metallic material and then drying, a film having excellent seizing resistance and excellent rust prevention which are equal to or higher than the film formed by a chemical treatment method. SOLUTION: The protective film treating agent is obtained by incorporating an alkali silicate to be represented by the formula: M 2 O.nSiO 2 [wherein n is a number of 2-9; and M is at least one kind of Na, K, Li, and NR 4 (wherein R is an alkyl group)] into water. The incorporation of a lubricating component into this protective film treating agent can impart excellent self-lubrication performance to a film. COPYRIGHT: (C)2003,JPO
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:
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:
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:
A first treating agent for forming a protective coating which comprises water and, compounded therewith, an alkali silicate represented by the formula: M2O . nSiO2, wherein n represents a number of 2 to 9 and M represents at least one of Na, K, Li and NR4 where each R independently represents a hydrogen atom or an alkyl group a second treating agent comprising the first treating agent and a lubricating agent a metallic material having a protective coating formed by using the treating agent and a method for forming a protective coating which comprises using the treating agent. The second treating agent can form a coating film having excellent self-lubricating property. The treating agents can form a coating film having excellent anti-galling and rust preventive properties which is comparable or superior to those of a coating film formed through a chemical reaction of a metallic base material, by a simple and easy method wherein the treating agent is applied on the surface of a metallic material and then dried.
Abstract:
Organosilicone pastes and greases including at least one oily diorganopolysiloxane polymer with a dynamic viscosity at 25 DEG 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 mu m and a high BET specific surface area of more than 5 m /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 DEG C.
Abstract:
The invention provides composites of organic polymeric compositions including a matrix of an organic polymer and a filler distributed throughout the matrix, the filler being present in the matrix substantially as separate particles, each about the fundamental particle size of the filler. The fillers are unique mixed metal hydroxide compositions that are obtainable in sub-micron size particles. These particles are layered and have a BET specific surface area in excess of about 100 m /g. An anion of the particulates is selected to be compatible with the organic polymer thereby providing ease of dispersion of the filler particles throughout the polymer matrix.