A liquid preparation for application to an inner side of a hollow body to produce a sliding layer on a packaging for pharmaceuticals or cosmetic products comprises the following constituents: a reactive silicone system for forming a silicone network of the sliding layer, a catalyst for catalyzing the cross-linking reaction of the reactive silicone system, at least one unreactive silicone oil, and at least one diluent. The diluent comprises a silicon-containing compound and a content of the at least one diluent in the preparation amounts to more than 45 percent by weight and less than 95 percent by weight in the preparation.

Provided is a salt that comprises a silicon-containing phosphate anion represented by formula (1) ##STR00001##
(in the formula, R.sup.1-R.sup.4 each independently represent an alkyl group having 1-4 carbon atoms, and n represents an integer of 2-8).

Lubricant infused surfaces (LIS) can be uncoated high-surface-energy solids, thereby eliminating the need for unreliable low-surface-energy coatings and resulting in LIS repelling the lowest surface tension impinging fluid (butane, 13 mN/m) reported to date.

Nanoparticle compositions contain a graphene-based material. A preparation process involves providing several components and milling a mixture. The nanoparticle compositions can be used as a lubricant additive to improve tribological performance, in particular to improve anti-friction and anti-wear performance on metal parts. A corresponding lubricant composition contains these nanoparticle compositions.

Provided is a salt that comprises a silicon-containing phosphate anion represented by formula (1)

##STR00001##

(in the formula, R.sup.1-R.sup.4 each independently represent an alkyl group having 1-4 carbon atoms, and n represents an integer of 2-8).

Provided is an additive to grease comprising a salt including a silicon-containing phosphoric acid ester anion represented by the following formula (1).

##STR00001##

In the formula, R.sup.1 to R.sup.3 are independently alkyl groups having 1-4 carbon atoms. R.sup.4 is an alkyl group having 1-8 carbon atoms. n is an integer of 1-8.

Disclosed is a timepiece assembly including at least two elements in contact and mobile relative to each other, one of the elements having at least a first contact surface intended to rub against at least a second contact surface of the other element under dry lubrication conditions. At least one of the first and second contact surfaces is covered with a hydrophobic coating having an angle of contact with water greater than 90, preferably greater than 100 and preferably greater than 110, and a coefficient of friction lower than 0.15, preferably lower than 0.12 and preferably lower than 0.1, the variation in the coefficient of friction as a function of the relative humidity being lower than 25%, preferably lower than 10% and preferably lower than 5%.

A silole derivative is of formula (I): ##STR00001## each of the groups in the above formula is defined as those in the description. The silole derivative of formula (I) has aggregation-induced emission performance, and is particularly applicable in luminescent parts and devices, fluorescent probes, biological imaging, lubricating oils and greases. A lubricating grease composition has photoluminescence performance, as well as one or more of advantageous anti-oxidation properties, anti-wear properties, extreme pressure properties and anti-rust properties. It is applicable in many mechanical equipment in electrical industry, metallurgical industry, food industry, paper industry, automobile industry and aircraft industry.

A lubricant composition includes a base lubricant and a plurality of lubricant additive molecules. Each molecule includes a surface active group attractable to a target surface, wherein the surface active group comprises a carboxyl group, a siloxyl group, an amine group, or a mixture thereof, and a carbon containing component connected to the surface active group, wherein the carbon containing component comprises a carbon ring, wherein the surface active group and the carbon containing component are adapted such that the carbon film is formed in situ on the target surface of the target machine only when tribological energy activates the lubricant additive to unravel the carbon containing component under a pressure and a temperature during operation.

Provided is a graphene additive, having a viscosity between 1000 and 40000 cps and a grind fineness not greater than 15 m, and comprising: nano-graphene sheets and a silane coupling agent, wherein a weight ratio of the nano-graphene sheets to the silane coupling agent is 0.1-15:99.9-85, and carbon atoms on a surface of the nano-graphene sheets form chemical bonds SiOC with oxygen substituents of the silane coupling agent. The present application further provides a method of preparing the graphene additive.