The present invention provides a polyrotaxane of high compatibility with silicones, such as silicone oil, a highly insulative polyrotaxane, and/or a material comprising said polyrotaxane. The present invention provides a polyrotaxane obtained by disposing blocking groups at both ends of a pseudopolyrotaxane, in which the opening in a cyclic molecule is clathrated in a skewered manner by a straight-chain molecule, so that the cyclic molecule does not escape, wherein the cyclic molecule comprises a first group represented by formula I (in formula I, X is a single bond or NH; n is 0 or 1; R is a straight-chain, branched, or cyclic alkyl group, alkenyl group, or alkynyl group comprising 12-20 carbon atoms, with some of the hydrogen in the alkyl group, alkenyl group, or alkynyl group being optionally substituted by an OH group, a CN group, or an NH.sub.2 group; and * is the position of the bond to the cyclic molecule).

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A contact lens with sustained-release property is provided. The contact lens includes a polymer, pseudorotaxane embedded in the polymer, and a stabilizer embedded in the pseudorotaxane. The polymer is polymerized by monomer materials. The monomer materials include ethyl methacrylate, ethylene glycol dimethacrylate, methacrylic acid, 2-hydroxyethyl methacrylate, or a combination thereof. The stabilizer includes surfactant, amino acid with a polar side chain, oligopeptide containing at least one amino acid with a polar side chain, purine or its derivative, or a combination thereof.

One aspect of the present invention relates to a resin composition containing a polyrotaxane (A), an epoxy resin (B), and a curing agent (C), in which the curing agent (C) contains an acid anhydride (C-1) in an amount of 0.1 parts by mass or more and less than 10 parts by mass based on a total of 100 parts by mass of the polyrotaxane (A), the epoxy resin (B), and the curing agent (C).

A solvent-free polymer electrolyte having a polymer matrix which is conductive for lithium ions and a lithium salt, wherein the polymer matrix has at least one pseudo-polyrotaxane which includes at least one linear polymer and at least one ring-shaped molecule, and wherein the lithium salt is arranged in the polymer matrix and is at least partially chemically bonded to the polymer matrix, wherein the polymer matrix includes at least one pseudo-polyrotaxane with at least one completely or partially chemically modified cyclodextrin or at least one completely or partially chemically modified crown ether, in which the present hydroxyl groups of the cyclodextrin, or the scaffold of the crown ether, are/is partly or completely modified by functional groups, wherein the functional groups comprise alkyl, aryl, alkenyl, alkynyl groups (C.sub.n, with n≤5), or other short-chain polymer groups having up to 20 repeating units.

Polyrotaxanes and methods of making and using the same are disclosed herein. The polyrotaxanes comprise a threading component comprising a collecting chain and at least one artificial molecular pump on the terminus of the TC. The artificial molecular pump comprises a coulombic barrier, a steric barrier, and a recognition site between the coulombic barrier and the steric barrier.

One aspect of the present invention relates to a resin composition containing a polyrotaxane (A), an epoxy resin (B), and a curing agent (C), in which the curing agent (C) contains an acid anhydride (C-1) in an amount of 0.1 parts by mass or more and less than 10 parts by mass based on a total of 100 parts by mass of the polyrotaxane (A), the epoxy resin (B), and the curing agent (C).

A cement composition and set cement including cement and a sliding-ring polymer. A system and method of applying the cement composition.

An object of the present invention is to provide a golf ball having enhanced controllability on approach shots from the rough and excellent stain resistance and shot feeling. The present invention provides a golf ball comprising a golf ball body having a cover, and a paint film covering the golf ball body, wherein a 10% elastic modulus of the paint film is 75 kgf/cm.sup.2 or less, a storage modulus (E′.sub.150) at 150° C. of the paint film obtained by measuring dynamic viscoelasticity of the paint film is 1.0×10.sup.7 Pa or more, an indentation depth of the paint film measured under a specific measuring condition in a state that the paint film is formed on the surface of the golf ball body is 1250 nm or more, and a material hardness of the cover is less than 50 in Shore D hardness.

In various embodiments a polyrotaxane carrier for in vivo delivery of a nucleic acid is provided. In certain embodiments the carrier comprises: a multi-arm polyethylene glycol (PEG) backbone comprising at least three arms; at least one cyclic compound having a cavity, where an arm of said multi-arm PEG backbone is threaded into the cavity of said cyclic compound forming an inclusion complex; a bulky moiety capping the terminal of the arm(s) threaded into said cyclic compound where said moiety inhibits dethreading of the cyclodextrin from the arm(s) of said backbone; and where at least one arm of said PEG backbone is free of cyclic compounds; and where said carrier has a net positive charge.

The present invention provides isolated nanosheets each of which includes a plurality of pseudo-polyrotaxanes and which are easily isolated without adhering to each other. The present invention provides an isolated nanosheet including a plurality of pseudo-polyrotaxanes each having one or more first cyclic molecules and a linear molecule included in a cavity or cavities of the first cyclic molecules in a skewered manner, wherein the linear molecules include, as part thereof, first linear molecules each having an ionizable group that ionizes in water or an aqueous solution.