Abstract:
The present invention relates to a non-flammable, anti-corrosive, non-discoloring product which has both penetrating and lubricating characteristics and is prepared with a non-flammable propellant that does not emit volatile organic compounds, but does replace water, and to a process for producing the same.
Abstract:
An endoscope which has small bending resistance and is hard to be damaged or broken even when it is repeatedly used is disclosed. The endoscope includes a flexible insertion section 2 and an operation section 7 provided on the proximal end of the insertion section 2. The insertion section 2 has a sheath constructed from an outer layer 382 and the like, and elongated members such as an image guide 31 and light guides 32, 32 and the like are housed in lumens in the sheath. Further, each light guide 32 has an optical fiber bundle and a protective sheath 321 for protecting the optical fiber bundle. In the interior space of the protective sheath 321, a lubricant 5 containing a silicone oil and a solid lubricant is provided. The solid lubricant contains at least one of boron nitride, poly tetrafluoroethylene, and molybdenum disulfide. The solid lubricant is preferably formed into powder having an average grain size of 0.1 to 15 nullm. By providing the lubricant 5 in the interior space of the lumen, bending resistance of the insertion section is reduced so that damage, breakage, or the like is hard to occur in the elongated members.
Abstract:
This invention discloses novel catalyzed surface composition altering formulations and methods and catalyzed surface coating formulations and methods, which contain one or more catalysts, along with optional other ingredients, wherein the catalysts serve to effect in situ chemical bonding reactions in that the catalysts function to initiate, to promote, to accelerate, and/or to increase the formation and yield of persistent, solid, corrosion-resistant, impact-resistant, wear-resistant, and/or non-stick surface compositions and surface coating films, which may exhibit pigmentation and other aesthetic features, and may be designed to be environmentally benign. This invention discloses novel means to alter the surface composition and to coat the surface of metals, plastics, fabrics, woods, and the like through catalytically supported chemical reactions that produce functionally improved surface performance for industrial, commercial, domestic and other purposes.
Abstract:
An inexpensive high-performance cutting or grinding oil capable of significantly improving the cutting efficiency. Into a liquid component of the cutting or grinding oil are dispersed fine powders of boron nitride of hexagonal system and/or crystal line turbostratic structure, particularly crystalline turbostratic structure, having a mean particle size of primary particles not larger than 1 .mu.m.
Abstract:
This invention discloses novel catalyzed lubricant additives and catalyzed lubricant systems, which contain one or more catalysts, along with optional other additives, wherein the catalysts serve to accelerate the rate and increase the yield of the lubricant bonding reactions between the catalyzed lubricants and the wear surfaces being lubricated.
Abstract:
A self-lubricating solid coating that contains three layers of lubricants is disclosed. The solid lubricant may be prepared from chromium silicide or chromium carbide; disulfide and diselenide of tungsten, molybdenum, niobium, or tantalum; and silver or gold. This material combination provides superior wear and friction reduction over the temperature range applied. In this invention, chromium silicide or chromium carbide is a hard lubricant with a low wear property to protect the substrate metal; disulfide or diselenide is a soft lubricant with a very low coefficient of friction; and silver or gold with their high thermal conductivity are effective in conducting heat especially at high sliding velocities. Both silver and gold have a low friction coefficient with high oxidative stability. The use of this solid lubricant allows engine manufacturers to develop high temperature engine and partially or totally eliminate the use of liquid lubricants in engines, thus reducing the environmental pollution caused by liquid lubricants in various engines.
Abstract:
Elastic solids having reversible stress-induced fluidity are prepared, e.g., by combining liquid formulations with a crystalline mixed metal hydroxide conforming substantially to the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+n.multidot.a) (A.sup.n).sub.a .multidot.xH.sub.2 O where m is amount of Li, d is amount of divalent metal D, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n and a is the amount of A, and xH.sub.2 O represents excess waters of hydration, if any. These make useful coatings. The instantly reversible fluidization of these unique elastic solids may be expressed as: .sigma.=k.sub..alpha. .epsilon. when .epsilon. F, (this equation represents a generalized form for the usual theological equations); for a cycle of .epsilon., -xF
Abstract:
Alkenylsuccinic acid half-amides of the formulae ##STR1## are used in water-containing and/or oil-containing formulations or metalworking liquids as anticorrosive agents and emulsifiers. In said formulae: A=C.sub.6 -C.sub.30 alkenyl, R=H or R.sup.1, R.sup.1 =--R.sub.2 --O--(CH.sub.2 CHR.sup.3 --O).sub.n H, R.sup.2 =C.sub.1 -C.sub.1 -C.sub.10 alkylene, R.sup.3 =--H or --CH.sub.3, n=0 to 50 and Me.sup..sym. is an alkali metal ion, a proton or an ammonium ion of the formula HN.sup..sym. R.sup.4 R.sup.5 R.sup.6, R.sup.4, R.sup.5 and R.sup.6, which are identical or different, being hydrogen, C.sub.1 -C.sub.6 alkyl or hydroxyalkyl or Me.sup..sym. is a mixture of an alkali metal ion and an ammonium ion of the above-mentioned formula.
Abstract:
A rock bit grease composition is prepared by combining synthetic polymer lubricant basestocks comprising a first ethylene-alphaolefin polymer having an average molecular weight in the range of from 3,500 to 4,000, and a polyisobutylene polymer to form a first master. A metal complex soap base thickener is prepared by combining a synthetic polymer lubricant basestocks comprising a second ethylene-alphaolefin having an average molecular weight in the range of from 400 to 800, with an alkali-metal or alkaline-earth metal hydroxide, and at least one fatty acid. A preferred fatty acid is a blend of a first fatty acid having in the range of from 15 to 20 carbon atoms, and a second fatty acid having in the range of from 5 to 12 carbon atoms. The first master and metal complex soap base thickener are mixed together in desired proportions. Boron nitride extreme pressure agent, molybdenum disulfide lubricant additive, and copper powder anti-seize agent are added to the mixture to produce a grease composition having a Brookfield viscosity at 120.degree. C. in the range of from 600 to 750 centipoise, that is not harmful to elastomeric rock bit seals and boots, and that is free of metal lubricant additives that are toxic to humans and/or hazardous to the environment.
Abstract:
Disclosed are high performance grease compositions containing methylfluoroalkylsiloxanes and solid thickeners containing fluorinated polymers.