A lubricious coating for a medical device is formed including first and second coated layers. The first coated layer is between the second coated layer and the device surface and includes a vinyl pyrrolidone polymer and a photo reactive group. The second coated layer is in direct contact with the first coated layer and is a top coating that includes an acrylic acid polymer. The second coated layer can optionally include photoreactive groups. The coating was found to have a very low number of particulates (e.g., 10 m or greater) which is very desirable for in vivo use.

A lubricious coating for a medical device is formed including first and second coated layers. The first coated layer is between the second coated layer and the device surface and includes a vinyl pyrrolidone polymer and a photo reactive group. The second coated layer is in direct contact with the first coated layer and is a top coating that includes an acrylic acid polymer. The second coated layer can optionally include photoreactive groups. The coating was found to have a very low number of particulates (e.g., 10 m or greater) which is very desirable for in vivo use.

Provided is a fluorine-containing ether compound represented by the following formula. R.sup.1OR.sup.2CH.sub.2R.sup.3CH.sub.2R.sup.4OR.sup.5 (R.sup.3 represents a perfluoropolyether chain, R.sup.2 and R.sup.4 represent a divalent linking group having one or more polar groups, R.sup.1 and R.sup.5 represent Formula (2), Formula (3), or a hydrogen atom, and at least one of R.sup.1 or R.sup.5 is represented by Formula (2) or (3), in Formula (2), X.sup.1 represents an alkylene group having 1 to 30 carbon atoms, and Y and Z represent an aliphatic group having 1 to 30 carbon atoms, in Formula (3), X.sup.2 represents an alkylene group having 1 to 30 carbon atoms, and A and B represent an aliphatic group having 1 to 30 carbon atoms.)

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An agent for forming a solid lubricating coating film on a tightening surface of a thread portion, in which a solid lubricant is dispersed in a binder resin as a matrix component, a main component of the solid lubricant is melamine cyanurate, and an average particle diameter of the melamine cyanurate is 0.1 m or more and 10.0 m or less, the binder resin contains an alkyd resin and nitrocellulose, and the alkyd resin and nitrocellulose are contained in an amount of 85 wt % or more of the total binder resin component weight, and a total weight of the solid lubricant is 10 parts by weight or more and 100 parts by weight or less based on 100 parts by weight of a total weight of the binder resin.

There is provided a fluorine-containing ether compound represented by the following formula: R.sup.1R.sup.2CH.sub.2R.sup.3[CH.sub.2R.sup.4CH.sub.2R.sup.3].sub.nCH.sub.2R.sup.5R.sup.6 (n is 1 or 2; R.sup.3 and R.sup.3 are a perfluoropolyether chain; R.sup.4 is a divalent linking group having one polar group; R.sup.2 and R.sup.5 are a divalent linking group having one or more polar groups; R.sup.2 has an oxygen atom at an end that is bonded to R.sup.1; R.sup.5 has an oxygen atom at an end that is bonded to R.sup.6; R.sup.1 and R.sup.6 in end group bonded to an oxygen atom at an end of R.sup.2 or R.sup.5; and R.sup.1 and R.sup.6 are an organic group having 1 to 50 carbon atoms, and at least one of them is a group in which a carbonyl carbon atom or nitrogen atom constituting an amide bond is bonded to a carbon atom of an organic group having 1 to 8 carbon atoms).

Embodiments of the disclosure include lubricious coatings. In an embodiment the disclosure includes a lubricious coating for a medical device including first and second coated layers. The first coated layer is between the second coated layer and the device surface and includes a vinyl pyrrolidone polymer and a photo reactive group. The second coated layer is in direct contact with the first coated layer and is a top coating that includes an acrylic acid polymer. The second coated layer can optionally include photoreactive groups. The coating was found to have a very low number of particulates (e.g., 10 m or greater) which is very desirable for in vivo use.

Embodiments of the disclosure include lubricious coatings. In an embodiment the disclosure includes a lubricious coating for a medical device including first and second coated layers. The first coated layer is between the second coated layer and the device surface and includes a vinyl pyrrolidone polymer and a photo reactive group. The second coated layer is in direct contact with the first coated layer and is a top coating that includes an acrylic acid polymer. The second coated layer can optionally include photoreactive groups. The coating was found to have a very low number of particulates (e.g., 10 m or greater) which is very desirable for in vivo use.