WATER-SOLUBLE OR DISPERSE-CASH PP.

Polyamide and functional fluid containing same

Polyoxyalkylene polyamide lubricants having a terminal carboxylic acid group and a terminal amine group in the same molecule and a degree of polymerization of from 2 to 10 and salts thereof are provided. Stable aqueous based compositions are prepared from the polyamide or its salt, that are useful metal working and hydraulic fluids.

FLUOROPOLYETHER COMPOUND, LUBRICANT, MAGNETIC DISK, AND METHOD FOR PRODUCING SAME

An object of the present invention is to provide a fluoropolyether compound, a lubricant, and a magnetic disk that have such an excellent heat resistance as to be able to maintain the lubricity of the magnetic disk surface, without evaporating at high temperatures under laser heating, and also to provide a method for producing the disk. The present invention relates to a fluoropolyether compound, a lubricant containing the compound, a magnetic disk containing the compound, and a method for producing the disk. The fluoropolyether compound contains a C4-10 aliphatic hydrocarbon chain present in the middle of the molecule and at least two perfluoropolyethers, each perfluoropolyether being ether-linked to the C4-10 aliphatic hydrocarbon chain, the aliphatic hydrocarbon chain having at least one hydroxyl group, the at least two perfluoropolyethers having, at their non-hydrocarbon chain terminals, at least one polar group selected from the group consisting of -OH, -OCH2CH(OH)CH2OH,-OCH2CH(OH) ...

LUBRICATING MEMBER AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To solve such problems that a sliding component using a conventional solid lubricant has poor lubricating characteristics and easily suffers from damages such as galling on a sliding surface caused by hardness of the solid lubricant. SOLUTION: A lubricating member 1 is molded into a long rod body longer in a lengthwise direction (L) than in a radial direction (D), by mixing at least a polyamide resin as a thermoplastic resin, an ultrahigh molecular weight polyethylene, and a lubricating oil. A film 2 mainly comprising a polyamide resin is formed on an outer peripheral surface of the lubricating member 1, and inside the film 2, fibrous crystals of the polyamide resin and the ultrahigh molecular weight polyethylene extend in the lengthwise direction (L) of the lubricating member 1, forming a plurality of pores. With this structure, the lubricating member 1 achieves excellent workability while maintaining mechanical strength and lubricating characteristics. COPYRIGHT: ...

MAGNETIC RECORDING MEDIUM

PURPOSE: To maintain stable contact with a head at the time of high-density recording and to obtain a good signal to noise ratio by disposing a thin plasma- polymerized fine particle film and lubricating film on a thin ferromagnetic metallic film. CONSTITUTION: A perpendicularly magnetized film 9 consists of Co-Cr (79wt% Co) formed by a high-frequency sputtering method to 0.16μm thickness and the coercive force in the perpendicular direction thereof is 630(Oe). The thin plasma-polymerized fine particle film 10 of polyamide is formed thereon at a high frequency of 13.56(MHz) by using gaseous argon as a carrier gas. The lubricating layer 11 of stearic acid amide is further formed thereon to about 46Å. Since the cushion effect of the polymerized fine particles and the durability of the polymerized fine particles by the adhesion thereof as the film to the thin ferromagnetic metallic film are good, the characteristic to maintain the front surface shape of the magnetic head by the high-speed ...

POLYAMID UND EINE DASSELBE ENTHALTENDE ARBEITSFLUESSIGKEIT

HYDROCARBON MIXTURES THE MODIFIED POLYCYCLI AROMATIC ONE HYDROCARBONS CONTAINING

LUBRICATING COMPOSITION CONTAINING A DISPERSANT

Agent for the surface epilamization of an article

The present invention relates to an agent in particular for the surface epilamization of an article comprising one or more molecules having the general formula(1) A - F wherein: A is an anchor group comprising a moiety selected from the group consisting of silane groups, hydroxyl groups, catechol groups, phosphate groups, phosphonate groups, carboxylic acid groups, amine groups, thiol groups and any combination of two or more of the aforementioned groups and F is a functionalizing group, wherein the functionalizing group comprises a branched polymer having a backbone and at least two side groups, wherein at least one of the side groups is a C1-20 hydrocarbon group or a perhalogenated C1-20 hydrocarbon group. The invention pertains to the technical field of epilame for timepiece mechanical parts.

СМАЗОЧНЫЙ МАТЕРИАЛ С ТВЕРДОЙ СМАЗЫВАЮЩЕЙ ПЛЕНКОЙ ДЛЯ МЕТАЛЛИЧЕСКИХ ПОВЕРХНОСТЕЙ И СПОСОБ УСТРАНЕНИЯ ЭЛЕКТРОХИМИЧЕСКОЙ КОРРОЗИИ ЭТИХ ПОВЕРХНОСТЕЙ

Смазочный материал предназначен для применения в ракетных ускорителях и в связанном с ними пусковом устройстве, а также в других областях тяжелого машиностроения. Смазочный материал включает полимерную матрицу, содержащую связующее, дисульфид молибдена и соединение бора, выбранное из группы, состоящей из ортоборной кислоты, метаборной кислоты, окиси бора и их смесей. Определенное соотношение компонентов смазочного материала ингибирует коррозию металлической подложки. Заявляемый способ устранения электрохимической коррозии металлических поверхностей заключается в том, что на металлическую поверхность наносят заявляемый смазочный материал с твердой смазывающей пленкой. 2 с. и 9 з.п.ф-лы, 6 табл., 6 ил.

СМАЗОЧНЫЙ МАТЕРИАЛ ДЛЯ ОБЛЕГЧЕНИЯ ПРОЦЕССА МЕХАНООБРАБОТКИ И СПОСОБ МЕХАНООБРАБОТКИ

Настоящее изобретение относится к смазочному материалу для облегчения процесса механообработки, содержащий: высокомолекулярное соединение (A), имеющее средневесовую молекулярную массу 5 × 10или выше и 1 × 10или ниже; среднемолекулярное соединение (В), имеющее средневесовую молекулярную массу 1 × 10или выше и ниже чем 5 × 10; и углерод (C), имеющий средний размер частиц 100 мкм или больше, и формой углерода (C) является форма чешуек. Смазочный материал используется в способе механообработки, содержащем стадию механообработки материала обрабатываемой детали режущим инструментом с обеспечением контакта смазочного материала для облегчения процесса механообработки с режущим инструментом и/или подлежащей обработке частью материала обрабатываемой детали, в котором материал обрабатываемой детали содержит армированный волокном композиционный материал, трудно поддающийся механообработке металлический материал или композиционный материал из армированного волокном композиционного материала и трудно ...

VORSCHUBSPINDEL UND METHODE ZUR AUFBRINGUNG EINES SCHMIERFILMS

LUBRIFIANT FOR REFRIGERATING CIRCUIT

Polymeric schiff's base electro-rheologic system

The present invention relates to a polymer Schiff's Base electro-rheologic body. Said system is an anhydrous electro-rheologic system formed from insulating or weak-conducting dispersing medium and polymeric Schiff's Base with conjugated structure as dispersion phase. The dispersion phase-polymeric Schiff's Base of said electro-rheologic system is obtained by using aromatic first-grade amine compound and aldehyde-ketone compound to make them undergo the process of oxime-formed copolymerization reaction, and the doping and end group oxidation method can be used to raise its conductivity and polarizable capability, and the electro-rheologic system formed from it as dispersion phase can produce higher yield stress in the electric field so as to can obtain various electro-rheologic bodies which are applicable to different objects and use the polymer with delocalized structure as dispersion phase material.

Salt of a polyamide and functional fluid containing same

Functionalized olefin copolymer additives

Magnetic recording medium having organic protective overlayer

Verwendung von nukleinsäurefreien Viruspartikeln und Proteinen als Schmiermittel und zur Bildung von Komplexen mit Fullerenen

Verwendung von veränderten nukleinsäurefreien Viruspartikeln und Proteinen, die an ihrer Oberfläche Fluor - Atome angekoppelt haben als Schmiermittel.

KOHLENWASSERSTOFF MISCHUNGEN DIE MODIFIZIERTE POLYCYCLISCHE AROMATISCHE KOHLENWASSERSTOFFEN ENTHALTEN

Umweltfreundlicher fester Schmierfilm

METHOD OF FORMING GRAFTED COPOLYMERS

A process for preparing a grafted polymer in which a substrate polymer is graft reacted with a nitrogen-containing grafting monomer in the presence of ~ free radical initiator and an amide coupling inhibitor that reduces polymer crosslinking during the graft reaction.

POLYAMIDE AND FUNCTIONAL FLUID CONTAINING SAME

COMPOSITION AND PROCESS FOR TREATING METAL

A bath for treating metal surfaces for the formation thereon of composite films for the cold working of metal advantageously comprises an otherwise conventional conversion coating bath that also contains organic cationic polymer having at least 1 cationic nitrogen atom per molecule and having a molecular weight of 1,000 to 1,000,000, or a salt of such a polymer. Major improvements in the lubrication properties, particularly in the seizure resistance, can be achieved by applying out a conventional lubrication treatment on such a composite film. Specifically, practical operating limits in metal cold working, e.g., the working degree or ratio, working speed, tool life, and the like, can be increased in a single step. This is useful in terms of improving productivity, product stability, cost reduction, and the like.

СРЕДСТВО ДЛЯ ФОРМИРОВАНИЯ ПЛЁНКИ ТВЁРДОСМАЗОЧНОГО ПОКРЫТИЯ, НЕФТЕГАЗОПРОМЫСЛОВЫЕ ТРУБЫ И РЕЗЬБОВОЕ СОЕДИНЕНИЕ ДЛЯ НЕФТЕГАЗОПРОМЫСЛОВЫХ ТРУБ

Группа изобретений может быть использована при эксплуатации нефтегазопромысловых труб. Средство для формирования плёнки твёрдосмазочного покрытия на резьбовой части нефтегазопромысловых труб включает твёрдый смазочный материал, диспергированный в связующей смоле, и растворитель. Основным компонентом твёрдого смазочного материала является цианурат меламина со средним диаметром частиц 0,1-10,0 мкм. Связующая смола содержит нитроцеллюлозу и алкидную смолу при (0,5-3)-кратном массовом отношении. Общая масса твёрдого смазочного материала составляет 10-100 мас.ч на 100 мас.ч. связующей смолы. Предложены также нефтегазопромысловая труба и резьбовое соединение для нефтегазопромысловых труб. Технический результат изобретения заключается в улучшении смазывающей способности средства для формирования плёнки твёрдосмазочного покрытия, а также в увеличении числа свинчиваний и развинчиваний резьбового соединения, включающего такое покрытие. 3 н. и 7 з.п. ф-лы, 7 ил., 5 табл., 2 пр.

TRENN- UND SCHMIERSTOFFE FUER DAS DRUCKGIESSEN VON METALLEN

Magnetisches Aufzeichnungsmedium

FUNCTIONALIZED OLEFIN COPOLYMER ADDITIVES

This invention relates to a novel multi-functional fuel and lubricant additive t hat provides dispersancy properties as well as viscosity index improver credit, improved fuel economy and low temperature viscometric properties. The invention further relates to concent rates, fuel and lubricating oil compositions containing said additive.

Lubricating painting for aluminium or steel plates

Peinture lubrifiante comprenant essentiellement un mélange de résines, un additif lubrifiant et de la silice, ledit mélange de résines étant constitué d'une résine d'uréthane ayant une masse moléculaire supérieure à 3000, et d'une résine époxy, les matières solides de la résine d'uréthane représentant 50 à 97 % en poids des matières solides de la totalité des résines, la proportion de l'additif lubrifiant étant de 2 à 40 % en poids par rapport à la totalité des matières solides de la peinture lubrifiante, et la proportion de silice étant de 5 à 100 % en poids par rapport à la totalité des matières solides des résines de la peinture lubrifiante. Cette peinture lubrifiante présente d'excellentes propriétés d'aptitude au formage, de résistance à la corrosion (résistance à la rouille), de pouvoir lubrifiant, de soudabilité, de résistance aux taches et de résistance aux agents chimiques.

Slow Release Lubricant Additives Gel

A lubricant additive gel formed by the gellation of two or more lubricant additives for the slow release of the additive components into a fluid. The lubricant additive gel slowly releases into its component lubricant additives when contacted with the fluid such as an oil thereby serving as a lubricant fluid such as an oil thereby.

FLUOROPOLYETHER COMPOUND, LUBRICANT, MAGNETIC DISK, AND METHOD FOR PRODUCING SAME

MANUFACTURE OF MAGNETIC RECORDING MEDIUM

PURPOSE: To improve an abrasion resistance, a weather proof and a running property, by continuously forming both a ferromagnetic metallic thin film and an overcoating layer provided on said thin film. CONSTITUTION: A base body 9 is fed out from a feed-out roll 10, its surface is cleaned and activated by a glow discharge treatment chamber 3, subsequently it is vapor-deposited by a vapor flow obtained from a magnetic substance evaporation source 18 at an incident angle of about 45°W90°, sifting it along a cleaning can 15, and after that, is shifted to a plasma reaction chamber 5, is made to react to monomer gas (vinylidene fluoride, ethylene tetrafluoride, ethylene, vinyl chloride, stylene, chlorobenzene, etc.) supplied from a gas leading-in pipe 21, by means of plasma polymerization, an overcoating layer is laminated on the surface of the magnetic vapor-deposited thin film, and subsequently it is wound round a winding roll 26. COPYRIGHT: (C)1982,JPO&Japio ...

FRICTION REDUCER FOR HYDRAULIC FRACTURING

Compositions comprising an acrylamide polymer emulsion and a nonionic surfactant suitable for use as friction reducers for hydraulic fracturing are disclosed. The nonionic surfactants include aralkylated phenol ethoxylates, amine ethoxylates, amidoamine ethoxylates, linear or branched alcohol EO/PO alkoxylates, ethoxylated alcohols, alkylphenol ethoxylates, and EO-capped poly(oxypropylene) block copolymers. Improved hydraulic fracturing processes in which an acrylamide polymer emulsion is used as a friction reducer are also described. In these processes, the surfactant is included in the composition with the acrylamide polymer friction reducer, or it is introduced separately into the process. The performance of low-cost polyacrylamide friction reducers can be boosted with a small proportion of certain readily available nonionic surfactants. The inventive compositions are effective in high-salinity environments, and their performance can sometimes exceed that of more-expensive salt-tolerant ...

REFRIGERANT COMPOSITION

A lubricating oil for a refrigeration system using a tetrafluoroethane refrigerant containing a fluorinated compound represented by formula (I), wherein X represents a monovalent group having a multiple bond, A represents a mono-, di- or trivalent residue of an unsubstituted or partially substituted perfluorocarbon, perfluoro ether or perfluoro polyether. This oil has not only a good compatibility with a tetrafluoroethane refrigerant represented by HFC-134a in a wide temperature range but also excellent properties including heat resistance, lubrication behaviors, electric insulation, and viscosity-to-temperature relationship.

POLYOXYALKYLENE POLYAMIDE LUBRICANTS

ENVIRONMENTALLY COMPATIBLE SOLID FILM LUBRICANT

A solid film lubricant useful for aerospace and other heavy machinery applicatio ns comprising a mixture of boric acid and molybdenum disulfide in a polymeric binder comprisin g a silicone polymer and an epoxy resin is provided. Boric acid and compounds related to bori c acid can be effectively used as inorganic lubricant components in solid film lubricants i n place of graphite thereby avoiding galvanic corrosion induced by graphite. The boric acid containing solid film lubricant provides superior lubrication at the high stress levels com mon for booster rockets and other aerospace applications, but without inducing galvanic corrosio n, or exposing workers and the environment to toxic materials such as lead compounds. In additi on, it affords substantial savings in labor, due to the need for only one coat, and sav ings in energy due to the substantially lower cure temperature of about 450.degree.F compared t o 1000.degree.F for a currently used two coat ceramic system. There is also a ...

Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium

LUBRICATING PAINTING FOR ALUMINIUM OR STEEL PLATES.

CARBOHYDRATE MIXTURES INCLUDING/UNDERSTANDING OF HYDROCARBONS AROMATIQUESPOLYCYCLIQUES MODIFY

Magnetic recording medium having organic protective overlayer

A magnetic recording medium produced by forming an organic protective layer on a magnetic recording layer by sputtering conducted in an inert gas atmosphere using a material for forming the organic protective layer as cathode and the magnetic recording layer as anode has lubricating properties and wear resistance.

REFRIGERANT COMPOSITION

... 97 Disclosed is a lubricant for use in a refrigeration system using a tetrafluoroethane refrigerant, which comprises a fluorine-containing compound represented by the following formula: (I) wherein X represents a multiple bond-containing monovalent group, and A represents a mono-, bior trivalent unsubstituted or partially substituted perfluorocarbon residue, a mono, bi- or trivalent unsubstituted or partially substituted perfluoroether residue or a mono-, bi- or trivalent unsubstituted or partially substituted perfluoropolyether residue. This lubricant has a good miscibility with a tetrafluoroethane refrigerant as represented by HFC-134a over a wide range of temperatures ranging from the low temperature to the high temperature and is excellent in properties, such as heat resistance, lubricating properties, electrically insulating properties and viscosity-temperature characteristics.

COMPOSITION AND PROCESS FOR SURFACE TREATING METAL PRIOR TO COLD WORKING

A bath for treating metal surfaces for the formation thereon of composite films for the cold working of metal advantageously comprises an otherwise conventional coating bath that also contains organic cationic polymer having at least 1 cationic nitrogen atom per molecule and having a molecular weight of 1,000 to 1,000,000, or a salt of such a polymer. Major improvements in the lubrication properties, particularly in the seizure resistance can be achieved by applying out a conventional lubrication treatment on such a composite film. Specifically, practical operating limits in metal cold working, e.g., the working degree or ratio, working speed, tool life, and the like, can be increased in a single step. This is useful in terms of improving productivity, product stability, cost reduction, and the like.

ENVIRONMENTALLY COMPATIBLE SOLID FILM LUBRICANT

A solid film lubricant useful for aerospace and other heavy machinery applications comprising a mixture of boric acid and molybdenum disulfide in a polymeric binder comprising a silicone polymer and an epoxy resin is provided. Boric acid and compounds related to boric acid can be effectively used as inorganic lubricant components in solid film lubrican ts in place of graphite thereby avoiding galvanic corrosion induced by graphite. The boric acid containing solid film lubricant provides superior lubrication at the high stress levels common for booster rockets and other aerospace applications, but without inducing galvanic corrosion, or exposing workers and the environment to toxic materials such as lead compounds. In addition, it affords substantial savings in labor, due to the need for only one coat, and savings in energy due to the substantially lower cure temperature of about 450.degree.F compar ed to 1000.degree.F for a currently used two coat ceramic system. There is also a significant ...

DERIVE POLYAMIDIQUE DE POLYOXYALKYLENEDIAMINE, FLUIDE FONCTIONNEL LE CONTENANT ET SON APPLICATION A L'USINAGE DES METAUX

L'INVENTION A TRAIT A DES FLUIDES FONCTIONNELS. ELLE CONCERNE DES LUBRIFIANTS POLYOALKYLENE-POLYAMIDIQUES PORTANT UN GROUPE ACIDE CARBOXYLIQUE TERMINAL ET UN GROUPE AMINO TERMINAL DANS LA MEME MOLECULE ET AYANT UN DEGRE DE POLYMERISATION DE 2 A 10, AINSI QUE LEURS SELS. ELLE A TRAIT NOTAMMENT A DES COMPOSITIONS AQUEUSES STABLES PREPAREES A PARTIR DU POLYAMIDE OU DE SON SEL. APPLICATION COMME FLUIDES D'USINAGE DES METAUX ET COMME FLUIDES HYDRAULIQUES.

CARBOHYDRATE MIXTURES INCLUDING/UNDERSTANDING OF POLYCYCLIC AROMATIC HYDROCARBONS MODIFY

Ce mélange hydrocarboné comprend des composés aromatiques polycycliques modifiés ou PAC modifiés présentant une structure chimique de poids moléculaire moyen compris entre 200 et 10 000, cette structure chimique étant représentée par la formule (I) ci-après : (A) x (PAC) y dans laquelle x et y sont des nombres entiers correspondant aux nombres de motifs A ou PAC, choisis tels que x/ y est supérieur ou égal à 1 de préférence compris entre 1 et 50 et dans laquelle A est un motif correspondant à un monomère polymérisable comprenant entre 2 et 60 atomes de carbone.

COMPOSICAO FLUIDA FUNCIONAL AQUOSA E PROCESSO PARA TRABALHO DE METAL

Epilamization agent comprising a cleavable linking group and epilamization method using such an epilamization agent

An epilamization agent containing at least one compound including at least hydrophobic and oleophobic moieties arranged to impart epilame properties to the compound, and at least one hydrophilic moiety arranged to make the compound soluble in aqueous medium, the hydrophilic moiety being linked to the compound by at least one cleavable group. A method for coating a substrate with epilame, including: preparing an aqueous epilamization bath by solubilising such an epilamization agent, placing the substrate in contact with the epilamization agent in the epilamization bath, separating the hydrophilic moiety from the epilamization agent by cleavage, rinsing the substrate to eliminate the hydrophilic residues from the hydrophilic moiety and drying.

RESIN COMPOSITION FOR SLIDING MEMBER AND SLIDING MEMBER MADE THEREFROM

PROBLEM TO BE SOLVED: To provide a resin composition for sliding members, which can show sufficient bonding force to a backing metal, does not undergo melt and flow or peel from the backing metal even under severe friction conditions, and can permit a simplified production of sliding members and to provide a sliding member made therefrom. SOLUTION: This composition comprises 0.1-3wt.% compound metal oxide, 0.5-8wt.% calcium fluoride, 0.5-8wt.% tungsten disulfide, and the balance of nylon 11 or nylon 12. This member is made by forming a slide layer made from a resin composition on the surface of a metallic backing member through an adhesive layer. In this member, the resin composition comprises 0.1-3wt.% compound metal oxide, 0.5-8wt.% calcium fluoride, 0.5-8wt.% tungsten disulfide, and the balance of nylon 11 or nylon 12. COPYRIGHT: (C)1998,JPO ...

MAGNETIC RECORDING MEDIUM HAVING ORGANIC PROTECTIVE OVERLAYER

Salt of a polyamide and functional fluid containing same

HALOGEN FREE IONIC LIQUIDS AS LUBRICANT OR LUBRICANT ADDITIVES AND A PROCESS FOR THE PREPARATION THEREOF

A lubricant or lubricant additive composed of halogen-, phosphorus- and sulphur-free ionic liquids containing fatty acid anions exhibit superior friction-reducing and anti-wear properties. Preferably, the lubricant composition comprises a base oil and an ionic liquid or mixed of two or more ionic liquids having concentration of 0.5 wt% or more. These halogen-, phosphorus- and sulphur-free ionic liquids as lubricant or lubricant additive have minimal hazardous and corrosion effect to the environment and engineering surfaces, respectively. General chemical formula of fatty acid anion is represented as RCOO¯; whereas R may be C4 to C30 straight chain alkyl, branched alkyl, cycloalkyl, alkyl substituted cycloalkyl, cycloalkyl substituted alkyl, alkenyl (single or more double bonds) includes with or without branched structure and may contain heteroatom.

WATER-BASED POLYMERS FOR USE AS FRICTION REDUCERS IN AQUEOUS TREATMENT FLUIDS

Disclosed are methods comprising providing an aqueous polymer dispersion comprising water, an anionic salt, a water-based friction reducing polymer, a polyol, an anionic surfactant, and an ionic surfactant; mixing the aqueous polymer dispersion with additional water to form an aqueous treatment fluid; and introducing the aqueous treatment fluid into a subterranean formation. Also disclosed are methods comprising providing an aqueous treatment fluid comprising water, an anionic salt, a water-based friction reducing polymer in an amount sufficient to provide friction reduction without forming a gel, a polyol, an anionic surfactant, and an ionic surfactant; and introducing the aqueous treatment fluid into a subterranean formation.

HYDROCARBON MIXTURES COMPRISING MODIFIED POLYCYCLIC AROMATIC HYDROCARBONS

Water-based polymers for use as friction reducers in aqueous treatment fluids

POLYAMIDE AND FUNCTIONAL FLUID CONTAINING SAME

Polyoxyalkylene polyamide lubricants having a terminal carboxylic acid group and a terminal amine group in the same molecule and a degree of polymerization of from 2 to 10 and salts thereof are provided. Stable aqueous based compositions are prepared from the polyamide or its salt, that are useful metal working and hydraulic fluids.

HYDROCARBON MIXTURES COMPRISING MODIFIED POLYCYCLIC AROMATIC HYDROCARBONS

Ce mélange hydrocarboné comprend des composés aromatiques polycycliques modifiés ou PAC modifiés présentant une structure chimique de poids moléculaire moyen compris entre 200 et 10 000, cette structure chimique étant représentée par la formule (I): (A)x(PAC)y, dans laquelle x et y sont des nombres entiers correspondant aux nombres de motifs A ou PAC, choisis tels que x/y est supérieur ou étal à 1 de préférence compris entre 1 et 50 et dans laquelle A est un motif correspondant à un monomère polymérisable comprenant entre 2 et 60 atomes de carbone.

MAGNETIC DISK

PURPOSE: To improve wear resistance and stability in floating of a head by forming an org. solid lubricating protective film to a specific thickness by a coating method on a magnetic layer. CONSTITUTION: An org. material layer 4 is coated and formed on a magnetic disk which is provided with an alumite layer 2 on an Al alloy substrate 1 and consists of a magnetic layer 3 formed thereon. The layer 4 is formed by coating a soln. consisting of an org. solid component and solvent which can solve the org. solid component on the magnetic layer to ≤50nm thickness and drying the coating. The magnetic disk which is improved in the wear resistance, the stability in floating of the head and the life is thus obtd. COPYRIGHT: (C)1987,JPO&Japio ...

MAGNETIC RECORDING MEDIUM

PURPOSE: To obtain a superior magnetic recording medium free from curl, having a low coefft. of friction, and causing hardly drop-out while preventing after- cure by forming a protective film contg. a radiation-curing resin having unsatd. double bonds and a thermoplastic resin on the surface of a ferromagnetic thin film. CONSTITUTION: A coating liq. is prepd. by adding a lubricant to a soln. of a mixture of a radiation-curing resin having unsatd. double bonds such as acrylic modified urethane elastomer with a thermoplastic resin such as a vinyl chloride- vinyl acetate-vinyl alcohol copolymer. The coating liq. is applied to the surface of a ferromagnetic thin film formed on a support, and the solvent is evaporated by drying with hot air and an infrared lamp. The resulting film is cured by irradiating electron beams or the like in an inert gaseous atmosphere to form a protective film. Thus, a magnetic recording medium having a protective film with superior wear resistance is obtd. at a high ...

Polyoxyalkylene polyamide lubricants

Polyoxyalkylene polyamide lubricants having a terminal carboxylic acid group and a terminal amine group in the same molecule and a degree of polymerization of from 2 to 10 and salts thereof are provided. Stable aqueous based compositions are prepared from the polyamide or its salt, that are useful metal working and hydraulic fluids.

LUBRICATION AND LUBRICANTS

Water-based polymers for use as friction reducers in aqueous treatment fluids

Aditivos de copolìmeros de olefinas funcionalizados.

THREADED JOINT FOR PIPES AND METHOD FOR MANUFACTURING THREADED JOINT FOR PIPES

The present invention provides a threaded joint for pipes that has excellent high torque performance and a method for manufacturing the same. This threaded joint for pipes includes a pin (3), a box (4), and a solid lubrication film (21). The pin (3) has a pin-side contacting surface (34) that includes a pin-side threaded portion (31). The box (4) has a box-side contacting surface (44) that includes a box-side threaded portion (41). The solid lubrication film (21) is disposed on the pin-side contacting surface (34) and/or the box-side contacting surface (44). The solid lubrication film (21) comprises a binder, a lubricant, and glass frit.

FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIA, AND MAGNETIC RECORDING MEDIUM

Provided is a fluorine-containing ether compound which is capable of forming a lubricating layer that has excellent wear resistance even if the thickness thereof is thin, and which is suitable as a material for a lubricant for magnetic recording media. A fluorine-containing ether compound which is represented by formula (1). (1): R1-R2-CH2-R3-CH2-R4-R5 (In formula (1), R3 represents a perfluoropolyether chain; R1 is an end group bonded to R2; R5 is an end group bonded to R4; R1 represents an alkenyl group or an alkynyl group; R5 represents a group that contains a heterocyclic ring; R2 is a moiety represented by formula (2); R4 is a moiety represented by formula (3); and a in formula (2) and b in formula (3) independently represent an integer of 1-3.) ...

MAGNETIC RECORD MEDIUM

PROBLEM TO BE SOLVED: To maintain adhesion and lubricity by holding a lubricant contg. a compd. of a bifunctional perfluoro-polyether having terminal carboxyl groups and an amine and a branched carboxylic acid monoester in the outermost layer. SOLUTION: The lubricant contains a compd. of a bifunctional perfluoro- polyether having terminal carboxyl groups and an amine represented by formula I and a branched carboxylic acid monoester represented by formula II. In the formula I, Rf is a perfluoro-polyether chain and R1-R4 are each H or a hydrocarbon group. In the formula II, R5-R7 are each alkyl. Protrusions such as mountainous, crease-like or granular protrusions are formed on the surface of a nonmagnetic substrate 2, e.g. comprising a polyester such as polyethylene terephthalate or polyethylene naphthalate and a magnetic layer 3 is formed on the protrusions as a ferromagnetic metallic thin film with Fe, Co, Ni or the like. COPYRIGHT: (C)2000,JPO ...

摺動部材および摺動部品

Perfluoropolyether Schmiermittelzusammensetzungen

Magnetischer Aufzeichnungsträger und Verfahren zur Herstellung desselben.

Lubricating paint

SLIDING MATERIAL

A resin composition comprising carbon particles and polybenzimidazole resin particles; and a sliding material comprising the composition. The sliding material can be produced by blending carbon particles with polybenzimidazole resin particles and press-molding the blend with heating. The sliding material has excellent sliding properties under high-temperature conditions and has a low coefficient of friction.

FLUOROCOMPOUND, LUBRICANT, SURFACE MODIFIER, LUBRICATING FILM, MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING DEVICE

The use of a fluorocompound comprising a perfluoropolyoxyalkyl/alkylene chain with an average molecular weight of not less than 800 and an atomic group of a cyclic/noncyclic polyether as a low-scattering lubricant/surface modifier (such as a water repellant) serves to improve the sliding durability of magnetic recording media.

Non-combustible lubricating fluid

PCT No. PCT/SU88/00139 Sec. 371 Date Mar. 19, 1990 Sec. 102(e) Date Mar. 19, 1990 PCT Filed Jul. 25, 1988 PCT Pub. No. WO90/01057 PCT Pub. Date Feb. 8, 1990.The present invention relates to non-combustible lubricating materials. A non-combustible lubricating fluid is proposed, containing polyacrylamide, water, as well as triethanolamine and sodium nitrite, the ratio of the components being as follows, in % by mass: -polyacrylamide 0.3-0.6 -triethanolamine 0.8-1.5 -sodium nitrite 0.1-0.3 -water the balance. - ...

An environmentally compatible solid film lubricant

The present invention provides a solid film lubricant useful for aerospace and other heavy machinery applications comprising a mixture of boric acid and molybdenum disulfide in a polymeric binder comprising a silicone polymer and an epoxy resin is provided. Boric acid and compounds related to boric acid can be effectively used as inorganic lubricant components in solid film lubricants (SFLs) in place of graphite thereby avoiding galvanic corrosion induced by graphite. The boric acid containing SFL provides superior lubrication at the high stress levels common for booster rockets and other aerospace applications, but without inducing galvanic corrosion, or exposing workers and the environment to toxic materials such as lead compounds. In addition, it affords substantial savings in labor, due to the need for only one coat, and savings in energy due to the substantially lower cure temperature of about 250ºC (450ºF) compared to 550ºC (1000ºF) for a currently used two coat ceramic system. There ...

KÜHLMITTELZUBEREITUNG.

POLYAMIDE AND FUNCTIONAL FLUID

절삭 가공 보조 윤활재 및 절삭 가공 방법

... 중량 평균 분자량이 5 × 104 이상, 1 × 106 이하인 고분자량 화합물 (A) 와, 중량 평균 분자량이 1 × 103 이상, 5 × 104 미만인 중분자량 화합물 (B) 와, 평균 입자경이 100 ㎛ 이상인 카본 (C) 를 함유하는, 절삭 가공 보조 윤활재.

REFRIGERANT COMPOSITION

A lubricating oil for a refrigeration system using a tetrafluoroethane refrigerant containing a fluorinated compound represented by formula (I), wherein X represents a monovalent group having a multiple bond, A represents a mono-, di- or trivalent residue of an unsubstituted or partially substituted perfluorocarbon, perfluoro ether or perfluoro polyether. This oil has not only a good compatibility with a tetrafluoroethane refrigerant represented by HFC-134a in a wide temperature range but also excellent properties including heat resistance, lubrication behaviors, electric insulation, and viscosity-to-temperature relationship.

Perfluoropolyether lubricating compositions

MAGNETIC RECORDING MEDIUM

PURPOSE: To permit easy use of various film forming resins and to obtain a medium having a low coefft. of friction by consisting the medium of the film forming resin modified by a modifying agent which has substantially no free isocyanate groups. CONSTITUTION: This medium consists of a nonmagnetic base, a magnetic layer provided on one face of the base and a rear surface layer provided on one face of the base and a rear surface layer provided on the other face of the base. The rear surface layer consists of the film forming resin modified by the modifying agent which is the resulted product of reaction of a fluorine compd. having a reactive org. functional group and org. polyisocyanate and has substantially no free isocyanate groups. The modifying agent for the film forming resin refers to the resulted product of reaction of the fluorine compd. having the reactive org. functional group and the org. polyisocyanate and the reactive org. function group has substantially no free isocyanate ...

METALLIC SURFACE TREATING SOLUTION FOR FORMING METAL COLD WORKING COMPOSITE FILM AND FORMATION OF COMPOSITE FILM

PURPOSE: To obtain the metallic surface treating solution for forming the composite film which remarkably improves a tool life, working rate, working speed, etc., by adding a cationic, organic high polymer compound that contains cationic nitrogen atoms and has a specified molecular weight, to a base solution of chemical conversion treatment. CONSTITUTION: The metallic surface treating solution is prepared by adding the cationic, organic high polymer compound which contains at least one cationic nitrogen atom per constitutional unit and has a 1000 to 1000000 molecular weight, such as epoxy resins, polybutadiene based resins, maleic anhydride-modified resins or their salts such as phosphates, acetates to the base solution of chemical conversion treatment such as phosphate treating solutions, oxalate treating solutions in an amount of about 0.1 to 50g/l as the solid content. A metal such as carbon steel, low alloy steel having remarkably improved lubricity and in particular remarkably improved ...

MOLD RELEASE COATING MATERIAL AND MOLD RELEASE FILM

PROBLEM TO BE SOLVED: To provide a silicone-free mold release coating material which has excellent mold release characteristics, and simultaneously can secure adhesion to a base material to sustain mold release performance for a long period of time, and a mold release film obtained by incorporating the mold release coating material into a coating material and coating the resulting coating material. SOLUTION: The mold release film is constituted of segments having different constituting ratios of a fluorine-containing monomer, and simultaneously the constituting ratio of the fluorine-containing monomer in the segment having a higher constituting ratio of the fluorine-containing monomer is set at ≥20 wt.%. COPYRIGHT: (C)2004,JPO ...

MAGNETIC RECORDING MEDIUM

PURPOSE:To improve still durability and traveling durability characteristics at a low temp. by incorporating a prescribed material into the lubricant layer on a thin ferromagnetic metallic film. CONSTITUTION:This recording medium is obtd. by incorporating perfluoroalkenyl-modified perfluoroalkyl polyether into the lubricant layer provided directly or via a protective film 3 on the thin ferromagnetic metallic film 2. This perfluoroalkenyl-modified perfluoroalkyl polyether is obtd. by bonding perfluoroalkyl polyether and the perfluoroalkenyl group in a perfluoroalkenyl compd.

INCOMBUSTIBLE LUBRICANT LIQUID

BIODEGRADABLE NON-TOXIC MULTIFUNCTIONAL ANTI-RUST LUBRICANT GREASE

The present invention relates to a biodegradable non-toxic multifunctional anti-rust lubricating grease. More specifically, the present invention relates to a biodegradable non-toxic multifunctional anti-rust lubricating grease composed of: (a) monoacylglycerol having 16-22 carbon atoms; (b) diacylglycerol having 16-22 carbon atoms; (c) triacylglycerol having 16-22 carbon atoms; (d) alkyl ester in which an alcohol is esterified with fatty acid having 16-22 carbon atoms; and (e) a biodegradable biopolymer. According to the present invention, it is possible to provide greases having remarkably excellent lubricity, rust resistance, moisture-proofing property, permeability, washability and thermal diffusibility, compared with existing products. COPYRIGHT KIPO 2018 ...

POLYAMIDE AND FUNCTIONAL FLUID

LUBRICATING METHOD AND LUBRICATING COMPOSITION

PURPOSE: To provide a lubricating composition which can maintain lubricating efficiency and has a reduced change in viscosity even when exposed to a high temperature for a long time, by compounding a polyoxyalkylated amine, amide or ammonia. CONSTITUTION: This composition comprises a compound represented by the formula wherein X represented a residue having a structure formed by removing an active hydrogen from an active hydrogen-containing amine, an amide or ammonia, A is a random or block polyoxyalkylene containing 6 to 170 of 2-4C alkyleneoxide residues, R is H, an alkyl or an aryl, and n is an integer of 1 or more, and one or more additives preferably selected from among a corrosion inhibitor, an antioxidant, an abrasion inhibitor and an extreme-pressure additive. COPYRIGHT: (C)1991,JPO ...

VORSCHUBSPINDEL UND METHODE ZUR AUFBRINGUNG EINES SCHMIERFILMS

COPOLYMER ADDITIVES OF OLEFINAS FUNCIONALIZADOS

POLYAMID OCH FUNKTIONELLT FLUIDUM INNEHALLANDE DENSAMMA

High viscosity, functionalized metallocene polyalphaolefin base stocks and processes for preparing same

A process for producing a high viscosity functionalized metallocene polyalphaolefin (mPAO) fluid. The process includes providing a mPAO having a terminal double bond, said mPAO produced by the metallocene-catalyzed oligomerization or polymerization of an alpha-olefin feed; providing at least one of a substituted or unsubstituted alkyl thiol, aryl thiol, diphenylamine or naphthalene; and reacting, optionally in the presence of a catalyst or initiator, the mPAO having a terminal double bond with at least one of the substituted or unsubstituted alkyl thiol, aryl thiol, diphenylamine or naphthalene, under reaction conditions sufficient to produce the functionalized high viscosity mPAO fluid. The functionalized mPAO fluid has, as synthesized, a viscosity (Kv100) from 135 to 900 cSt at 100° C.; a viscosity index (VI) greater than 150; a pour point (PP) less than −25° C.; a molecular weight distribution (Mw/Mn) less than 2.0; a residual unsaturation (Bromine Number) less than 2.0; and a glass ...

NEW POLYAMINO ACID DERIVATIVE

PROBLEM TO BE SOLVED: To obtain a new polyamino acid derivative having such a structure that a plurality of amino acids are mutually bound via the amino group's nitrogen atom through crosslinking group, and useful in various applications such as dispersants, metal ion chelating agents and rustproofing agents. SOLUTION: This new polyamino acid derivative is such one that four or more amino acids are mutually bound via the amino group's nitrogen atom through crosslinking group; wherein the crosslinking group is pref. hydroxyl group and/or an alkylene group optionally having ether linkage in the carbon chain [e.g. a group of formula I ((k) is an integer of 1-10)], and this derivative is pref. a derivative of formula II (B is an amino acid side chain; M is H or a counterion; (n) is an integer of ≥4). The new polyamino acid derivative is obtained by reaction between (x) mol of epichlorohydrin and/or (y) mol of a polyepoxy compound having (z) epoxy functional groups and an amino acid at [2/3× ...

MAGNETIC RECORDING MEDIUM AND ITS PRODUCTION

PURPOSE: To reduce the contact frictional force appearing between a head and a magnetic recording medium by using a specified polymer as an orienting lubricant for an oriented lubricating layer of the magnetic recording medium. CONSTITUTION: The magnetic recording medium is obtained by successively depositing a metal magnetic thin film medium 3, amorphous inorg. oxide layer 4, and oriented lubricant layer 5 which can be fixed on the amorphous inorg. oxide layer 4, on an alloy disk 1 which is polished to have a mirror surface and covered with a nonmagnetic alloy layer 2 having a polished mirror surface. The orienting lubricant consists of polymer expressed by formula I which can be prepared by introducing perfluoropolyether to the side chains of polyamic acid polymers having strong adhesion property to amorphous inorg. oxides. Thereby, the contact frictional force appearing between a head and the magnetic recording medium can be reduced. COPYRIGHT: (C)1991,JPO&Japio ...

KÜHLMITTELZUBEREITUNG.

Resin composition for a sliding member

A resin composition for a sliding member which consists of 0.3~3 % by weight of metal oxidation mixture, 0.5~8 % by weight of CaF2, 0.5~8 % by weight of WuS2, and the residue of components is nylon 11 or nylon 12.

FRICTION REDUCER FOR HYDRAULIC FRACTURING

Compositions comprising an acrylamide polymer emulsion and a nonionic surfactant suitable for use as friction reducers for hydraulic fracturing are disclosed. The nonionic surfactants include aralkylated phenol ethoxylates, amine ethoxylates, amidoamine ethoxylates, linear or branched alcohol EO/PO alkoxylates, ethoxylated alcohols, alkylphenol ethoxylates, and EO-capped poly(oxypropylene) block copolymers. Improved hydraulic fracturing processes in which an acrylamide polymer emulsion is used as a friction reducer are also described. In these processes, the surfactant is included in the composition with the acrylamide polymer friction reducer, or it is introduced separately into the process. The performance of low-cost polyacrylamide friction reducers can be boosted with a small proportion of certain readily available nonionic surfactants. The inventive compositions are effective in high-salinity environments, and their performance can sometimes exceed that of more-expensive salt-tolerant ...

LUBRICANT COMPOSITIONS

Compositions including one or more a central cores having a cyclic group, and a plurality of arms extending from the central cores, wherein the arms comprise perfluoropolyethers (PFPEs) or its derivatives. Methods of preparing the compositions are also provided. Methods of preparing storage media that incorporate the compositions therein are further provided.