The present invention is directed to a wax with graphene compositions offering surprising benefits in reducing bicycle or motorbike chain lengthening, particularly in off road environments with high dirt and water levels such as during mountain biking or off-road biking. The invention is further directed to a method of preparing such compositions and to the use of such compositions on bicycle or motorbike chains.

The present invention is directed to compositions with solvent, wax and graphene. These compositions offer surprising benefits in reducing bicycle or motorbike chain lengthening, particularly in off road environments with high dirt and water levels such as during mountain biking or off-road biking. The invention is further directed to a method of preparing such compositions and to the use of such compositions on bicycle or motorbike chains.

Hydrophilic coatings including a base coat layer and a top coat layer wherein at least one of the base coat and top coat compositions that form the hydrophilic coatings comprises a diacrylate compound have a number average molecular weight less than 1000.

Polymers used as rolling lubricating agents, to compositions including said polymers, and to alkali metal films including the polymers or compositions on the surface(s) thereof. The use of said polymers and compositions is also described for strip-rolling alkali metals or alloys thereof in order to obtain thin films. Methods for producing said thin films, which are suitable for use in electrochemical cells, are also described. An improved lubricant according to formula I, which, for example, achieves enhanced conductivity, and/or enables the production of electrochemical cells having an improved life span in cycles.

The invention relates to a sliding member having a first sliding surface, wherein the first sliding surface (29) comprises a particulate support material (6) and a graphene-containing material (7), wherein the particulate support material (6) is at least partially coated with the graphene-containing material (7), and wherein a material bond (14) is present between the particulate support material (6) and the graphene-containing material (7).

The disclosure provides for a valve including a surface movably engaged with another surface. A coating is on the surface and is characterized by: a CoF of less than 0.1; a hardness in excess of 1,200 HVN; impermeability to liquids at pressures ranging from 15 and 20,000 psi; a surface finish of 63 or less; and a thickness ranging from 0.5 to 20 mils. The disclosure provides for material constructions including a continuous phase, including a transition metal, and a discontinuous phase, including a solid dry lubricant. The disclosure also provides for a method of depositing a coating that includes depositing a first layer of a coating onto a surface using electroplating, electroless plating, thermal spraying, or cladding, and then depositing a second layer of the coating onto a surface of the first layer using sputtering, ion beam, plasma enhanced chemical vapor deposition, cathodic arc, or chemical vapor deposition.

A rack-and-pinion type steering apparatus 1 comprises a gear case 3 made of aluminum or an aluminum alloy and having a hollow portion 2; a steering shaft 6 rotatably supported by the gear case 3 through rolling bearings 4 and 5; a pinion 7 which is provided integrally on a shaft end portion of the steering shaft 6 and is rotatably supported in the hollow portion 2 by the gear case 3 through the steering shaft 6; a rack bar 9 on which rack teeth 8 meshing with the pinion 7 are formed; a rack guide 10 which is disposed in the hollow portion 2 of the gear case 3 and supports the rack bar 9 slidably; and a spring 11 constituted by a coil spring for pressing the rack guide 10 toward the rack bar 9.

According to one aspect of the present invention, an organic fluorine compound is represented by a general formula

(R--E-CH.sub.2).sub.2-A(1A)

(where A is a divalent perfluoropolyether group, is an arylene group or a single bond, R is an alkenyl group or an alkynyl group, and E is an ether bond or an ester bond or a group that is represented by a chemical formula

OCH.sub.2CH(OH)CH.sub.2O

two groups each of which is represented by a general formula

R--E-CH.sub.2

may be the same or different, and at least one n among two is an arylene group).

A sucker rod assembly for use downhole includes sucker rods and couplings. The sucker rods having pin connections with a pin face and a threaded pin. The coupling make up adjoining rods using box connections each having a box face and internal thread. Dry film lubrication is applied only to the internal thread of the couplings and excluded from the box face of the box connections. During make up, the dry film lubrication can help prevent seizing and/or galling of the threads for the connection between the coupling and the rods. The box connection is circumferentially displaced relative to the pin connection to place a preload on the pin, and the box face has a friction abutment with the pin face.

According to one aspect of the present invention, an organic fluorine compound is represented by a general formula

(R--E-CH.sub.2-A-CH.sub.2-E).sub.n--G(1B) (where n is an integer of 2 to 5, A is a divalent perfluoropolyether group, is an arylene group or a single bond, R is an alkenyl group or an alkynyl group, and E and E are each independently an ether bond or an ester bond or a group that is represented by a chemical formula

OCH.sub.2CH(OH)CH.sub.2O

is a group in which n+1 hydrogen atoms are separated from benzene, G is an organic group containing a fullerene skeleton, the n number of groups each of which is represented by a general formula

R--E-CH.sub.2-A-CH.sub.2-E-

may be the same or different, and at least one among the n number of is an arylene group).