BYK 028 PDF
BYK® is a mixture of foam destroying polysiloxanes and hydrophobic solids in polyglycol. This product is the standard defoamer for water-based syste. Mixture of hydrophobic solids and foam destroying polysiloxanes in polyglycol. Acts as a silicone based, standard defoamer for aqueous systems. Exhibits easy . BYK Version 3. Revision Date 01/31/ Print Date 01/31/ 1 / 9. SECTION 1. PRODUCT AND COMPANY IDENTIFICATION. Product name.: BYK -.
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This application claims priority to provisional patent application Ser. This invention pertains to a water-based dry film lubricant composition that has a low volatile organic content VOC.
Many dry film lubricants have been developed. These lubricants are used on metal parts for antigalling, antifretting, antisiezing, and assembly aid applications.
Import Data and Price of byk at Nhava Sheva Sea | Zauba
However, much research has been conducted to replace dry film lubricants that are applied with potentially hazardous solvents, including lead-containing lubricants. Of particular interest in many military applications are new dry lubricants that are water-based, and which provide both corrosion resistance and lubricating properties. Until now no composition has met certain stringent military requirements such as those in U. The present invention provides a solution to one or more of the disadvantages and deficiencies described above.
This invention includes a composition that is water-based, has a byi VOC content, and provides both lubricating and anticorrosive properties to metal surfaces on which the composition is applied.
Advantageously, the composition can meet the current military requirements under U. The composition is useful as a dry film lubricant for antigalling, bky, antisiezing, and bym aid applications on a variety of surfaces such as those made of, for bky, steel, aluminum, titanium, and so forth.
The formulation provides both lubricating and corrosion protection. In one broad respect, this invention is a water-based lubricant composition, comprising: The composition is in the form of a dispersion when used.
It should be appreciated that the molybdenum disulfide may settle out if allowed to stand undisturbed. In another broad respect, this invention is a water-based lubricant hyk, comprising: In another broad respect, this invention is a process for the manufacture of a water-based lubricant composition, comprising: In another broad respect, this invention is a process of coating a metal surface with a lubricant, comprising: In another broad respect, this invention is a metal fastener coated with the residue formed by evaporation of volatile components of a water-based composition comprising water, an acrylic or urethane resin, molybdenum disulfide, and polytetrafluoroethylene.
The lubricant composition of this invention is stable, provides a stable film upon application, and provides both corrosion resistance and lubricity to the surface on which the coating vyk applied.
This invention has a number of advantages.
Importantly, the water-based composition provides both corrosion resistance and lubricity to the metal surface on which the composition is applied. Likewise, the composition has a low VOC. The composition is also easily applied.
Then too, after being applied to a metal surface, the volatile components evaporate readily and such that the binder forms a consistent coating. The composition of this invention comprises water, a binder, molybdenum disulfide, polytetrafluoroethylene, and may contain additional optional components. The composition nyk this invention includes water. In one embodiment, the water is deionized water. The composition includes from about 1 to about 90 percent by weight of water.
In one embodiment, the composition contains from about 20 to about 60 percent by weight of water. In another embodiment the composition contains water 208 an amount from about 25 to about 50 percent by weight. The binder employed in the practice of this invention is an acrylic resin or a polyurethane resin or both. Both acrylic resins and the polyurethane resins are well known. In one embodiment, the binder is an aliphatic polyurethane resin, such as a high solids aliphatic polyurethane dispersion.
The amount of binder used byl vary widely depending for example on the application. It should be appreciated that the greater the proportion of resin employed relative to the molybdenum disulfide, the greater the corrosion 0288 of the resulting cured film with, typically, a reduction in lubricity endurance of the system.
BYK (25 KGS/PAIL) – Suka Chemicals
In general, the amount of binder used is bykk the range of from about 5 to about 50 percent by weight of the composition. The friction reducing compounds used in this invention include fluorinated polymers and molybdenum disulfide. The fluorinated polymers include materials 082 as polytetrafluoroethylene. The polytetrafluoroethylene reduces friction at low pressure, with the molybdenum disulfide providing excellent friction reduction at higher pressures during use.
The amount of fluorinated polymers is generally from about 0. Typically, the amount of fluorinated polymer is about 3 to about 7 percent. In one embodiment, the amount of fluorinated polymer employed is about 5 percent.
US7524797B1 – Low volatile organic content lubricant – Google Patents
In general, the molybdenum disulfide used in the practice of this invention has an average particle size in the range from 0.
In one particular embodiment, the molybdenum disulfide has an average particle size of about 5 microns, containing particles in the range from 0. The amount of molybdenum disulfide used is generally about 0. Typically, the amount of molybdenum disulfide is from about 15 to about 30 percent. In one embodiment, the amount of molybdenum disulfide is from about 15 to 25 percent by weight.
In one embodiment, the amount of molybdenum disulfide is about 21 percent by weight. The composition may optionally include other friction reducing compounds. A surfactant can be optionally employed in the practice of this invention. The surfactant bk to suspend the friction reducing agents in the composition to thereby form a dispersion prior to application on the surface to be treated. A wide variety of surfactants can be employed.
Non-limiting examples of representative surfactants which may optionally be used in the practice of this invention include non-ionic, anionic, cationic and amphoteric surfactants, such as monocarboxyl cocoimidoazoline, higher alkyl sulfate sodium salts, tridecyloxy poly alkyleneoxy ethanolethoxylated or propoxylated alkyl phenol, alkyl sulfonamides, C alkaryl sulfonates such as alkylbenzene sulfonates, cocoamphaodipropionate, cetylpalmitic alkanol amides, hydrogenated castor oil, isooctylphenyl polyethoxy ethanol, sorbitan monopalmitate, C alkyl pyrrolidone, cocoaminopropionic acid and polyethoxy amino salts thereof.
The amount of surfactant is any amount effective to provide reduced surface tension of the formulation. In general the amount is about 0. In one embodiment, the amount is about 0. In one specific embodiment the amount is about 0. The coalescing agents used in this invention include a variety of glycol based compounds, including the ethylene and propylene derived glycol ether types. In bjk, the preferred coalescing agents are the propylene glycol ethers.
Representative nonlimiting examples of such coalescing agents by diethylene glycol byj ether DBethylene glycol n-butyl ether EBethylene glycol phenyl ether EPhand propylene glycol n-propyl ether PnPpropylene glycol phenyl ether PPhpropylene glycol n-butyl ether PnBtripropylene glycol methyl ether TPMdipropylene glycol n-butyl ether DPnBtripropylene glycol n-butyl ether TPnBand dipropylene glycol methyl ether DPM.
Combinations of coalescing agents can be used in the practice of this invention, such as a combination of DPnB and TPM. The amount of coalescing agent used can vary widely. In general, the coalescing agent or mixture of agents is employed in an amount of from 1 to 20 percent by byyk of the total formulation.
In one embodiment, the amount is from 5 to 15 percent by weight. A nitrogen-containing basic compound is employed to adjust the pH of the system if needed. In general, the composition has a pH in the range from 7 to 11, in one embodiment from 7. It has been found that if the pH is unduly low, the 082 will be unstable or will not form a dispersion in the first instance. The pH is adjusted to a value of from 7 to 11 prior to byi of the resin into the composition.
It should be appreciated that molybdenum disulfide as received may impart acidity to the composition, which nyk require addition of base so that the resin remains stable. Owing to its basicity and low cost, ammonia is the preferred nitrogen-containing basic compound. In principle, any generally water soluble amine can be used. Representative examples of such amines include morpholine and triethanolamine.
The nitrogen containing basic compound is added in an amount to provide the water-based composition with a pH of at least 7, in one embodiment at least 8, and in another embodiment a pH in the range from 7 to 9. When used, the amount of nitrogen-containing basic compound is generally at least about 0.
The composition of this invention may optionally include one or more dispersing agents, which may be referred to as wetting agents. If used, the dispersing agent is typically present in an amount of from 0. Dispersing agents that may be suitable for use in by invention include crude tall oil, oxidized crude tall oil, surfactants, organic phosphate esters, modified imidazolines and amidoamines, siloxanes, alkyl aromatic sulfates and sulfonates.
Representative examples of such wetting agents include but are not limited to sodium bis tridecyl sulfosuccinate, di 2-ethyl hexyl sodium byj, sodium dihexylsulfosuccinate, bbyk dicyclohexyl sulfosuccinate, diamyl sodium sulfosuccinate, sodium iso-butyl sulfosuccinate, disodium iso-decyl sulfosuccinate, disodium ethoxylated alcohol half ester of sulfosuccinic acid disodium alkyl amido byyk sulfosuccinate, tetra-sodium N- 1,2-dicarboxyethyl -N-octadecyl sulfosuccinamate, disodium N-octasulfosuccinamate, sulfated ethoxylated nonylphenol, 2-aminomethylpropanol, the condensation product of formaldehyde with naphthalene sulphonate, an alkylarylsulphonate, a lignin sulphonate, a fatty alkyl sulphate, ethoxylated alkylphenol, and an ethoxylated fatty alcohol.
The composition of this invention may optionally include one or more antifoam agents. If used, the antifoam agent is typically present in an amount of from 0. The antifoams may be based on fatty alcohols, fatty acids, silicone, hydrophobic silicon, ethylene-bis-stearamide, polyalkylene glycols, and fatty quaternary amine salts.
The composition of this invention typically provides a clear topcoat. However, the composition of this invention may optionally include a wide range of pigment choices. The water-based composition can be prepared by combining the components together, with mixing, stirring, or other agitation. Because molybdenum disulfide will settle out if the water-based composition bk allowed to set for an extended period of time, the composition should be shaken, stirred, or otherwise agitated to form a dispersion prior to use, with the molybdenum disulfide particles suspended in the composition.
The formulation of this invention can be applied to the surface to be treated in a variety of ways. For example, the formulation can be rolled, brushed, or sprayed onto the surface. Alternatively, the gyk to be treated can be dipped into the formulation. For many applications, spray application is preferred. After application, the water and coalescing agents will evaporate to leave a friction reducing coating. In general, after application, the treated surface is in a location having a temperature of over 0 degree Centigrade and less than 50 degrees Centigrade.
Typically, the temperature is the ambient temperature assuming the temperature is above bky freezing point of water. The applied water-based composition can be heated to expedite coating formation, but this is not necessary and may be detrimental if the temperature is too high.
Thus, evaporation of the water and any other volatile components, including coalescing agents, typically occurs at room temperature though hyk temperatures may be employed so long as an adequate coating forms. The surface can be treated with multiple coatings of the formulation to build up the thickness of the coating. The coating thickness can vary widely. In general the coating thickness is from about 1 micron to about 1 centimeter in depth. In one embodiment, the coating thickness is 0.