The present invention relates to a coating composition that can produce an article having an inner surface and an outer surface, both of which are slippery, and a method for preparing the same. By using the coating composition according to the present invention, it is possible to produce the article having the inner surface and the outer surface, both of which are slippery, only with a simple process of molding and curing a polymer resin by the technique of the prior art. The article produced using the coating composition of the present invention can solve an ice removal on a surface of the machinery such as an aircraft and an automobile, a biofouling problem in a blood vessel, a problem requiring self-cleaning, and the like, and thus can be used in various industries.

A lubrication board includes a substrate; and a lubrication layer disposed on a surface of the substrate, wherein the lubrication layer comprises a polymer expressed by formula (I) below,

##STR00001##

wherein R.sub.1 is selected from a substituted or unsubstituted C.sub.2-C.sub.18 alkyl or C.sub.2-C.sub.18 aryl; R.sub.2 is selected from a substituted or unsubstituted C.sub.2-C.sub.18 alkyl or C.sub.2-C.sub.18 alkyl which is interrupted by —O—; R.sub.3 is selected from —NH— or —S—; R.sub.4 is selected from —NH.sub.2, —OH or —SH; and n, p and q are positive integers ranging from 2 to 20000.

An antifriction coating formulation composition comprising (a) a soluble resin, (b) an insoluble polymer, (c) optionally a solid lubricant, and (d) a solvent.

A coating composition for producing an article is disclosed. The coating composition includes a blend of a polymer resin and a lubricating oil, wherein the coating composition is in a liquid-phase By using the coating composition, it is possible to produce the article which can be used in various industries, only with a simple process of molding and curing a polymer resin by the technique of the prior art.

Low-friction fluorinated coatings are disclosed herein. A preferred low-friction material contains a low-surface-energy fluoropolymer having a surface energy between about 5 mJ/m.sup.2 to about 50 mJ/m.sup.2, and a hygroscopic material that is covalently connected to the fluoropolymer in a triblock copolymer, such as PEG-PFPE-PEG. The material forms a lubricating surface layer in the presence of humidity. An exemplary copolymer comprises fluoropolymers with average molecular weight from 500 g/mol to 20,000 g/mol, wherein the fluoropolymers are (α,ω)-hydroxyl-terminated and/or (α,ω)-amine-terminated, and wherein the fluoropolymers are present in the triblock structure T-(CH.sub.2—CH.sub.2—O)—CH.sub.2—CF.sub.2—O—(CF.sub.2—CF.sub.2—O).sub.m(CF.sub.2—O).sub.n—CF.sub.2—CH.sub.2—(O—CH.sub.2—CH.sub.2).sub.p-T where T is a hydroxyl or amine terminal group, p=1 to 50, m=1 to 100, and n=1 to 100. The copolymer also contains isocyanate species and polyol or polyamine chain extenders or crosslinkers possessing a functionality of preferably 3 or greater. These durable, solvent-resistant, and transparent coatings reduce insect debris following impact.

The present disclosure relates to a graphene coating composition for a wiper blade and a method for coating a wiper blade using the same. More particularly, the present disclosure relates to a graphene coating composition for a wiper blade that may improve durability and an abrasion resistance of the wiper blade, and a method for coating a wiper blade using the same.

A lubrication board includes a substrate; and a lubrication layer disposed on a surface of the substrate, wherein the lubrication layer comprises a polymer expressed by formula (I) below, ##STR00001##
formula (I); wherein R.sub.1 is selected from a substituted or unsubstituted C.sub.2-C.sub.18 alkyl or C.sub.2-C.sub.18 aryl; R.sub.2 is selected from a substituted or unsubstituted C.sub.2-C.sub.18 alkyl or C.sub.2-C.sub.18 alkyl which is interrupted by —O—; R.sub.3 is selected from —NH— or —S—; R.sub.4 is selected from —NH.sub.2, —OH or —SH; and n, p and q are positive integers ranging from 2 to 20000.

The present disclosure relates to a ureteral stent and a preparation method thereof. The ureteral stent has at least one pre-coating formed on its surface and at least one hydrophilic lubricating coating formed on the pre-coating. Preferably, the pre-coating and the hydrophilic lubricating coating are formed by photocuring, thermal curing, chemical reaction, physical adsorption, crystallization or freezing. By means of the technical solutions of the present disclosure, a stable and firm coating is formed on the surface of the ureteral stent with a more complicated shape, the friction force (the friction force of the 30.sup.th cycle is small, and the friction force of the 30.sup.th cycle/initial friction force is kept within 2 times) of the ureteral stent is greatly reduced, and the lubricating performance is greatly improved.

Technologies are described for a durable low friction coating (DLFC), which may be manufactured by mixing a binder, a filler, and one or more additives in liquid form, rolling the liquid mixture onto a coil material and curing for subsequent cutting and stamping. The DLFC may be used to coat an abutment clip or a brake shim directly onto a metal substrate or over an elastomer layer. Water-based binders may be used for environmentally friendly brake systems. In some examples, the binder in the DLFC may be in a range from at least 70 weight % to less than 95 weight %, the filler in a range from at least 1 weight % to less than 15 weight %, and the additives in a range from at least 0.2 weight % to less than 5 weight %.

A threaded tubular connection for drilling or operating hydrocarbon wells contains a portion of a tubular element with a male end having an axis of revolution and provided with a first threading extending about the axis of revolution, the male end portion being complementary with a portion of a tubular element with a female end having an axis of revolution and provided with a second threading extending about the axis of revolution, the male and female end portions being capable of being connected by makeup, each of the male and female end portions further comprising a sealing surface with a metal-metal interference, wherein the threading and the sealing surfaces of the male and female end portions are coated with a metallic anti-corrosion and anti-galling layer wherein zinc (Zn) is the major element by weight. One of the metallic anti-corrosion and anti-galling layers is coated with a passivation layer and the other is at least partially coated with a lubricant layer.