Abstract: [Object] To provide a coating material for a curable solvent-based topcoating material, having excellent marring resistance, chipping resistance, producing no crack and excellent in performances such as weatherability, stain resistance, adhesion and the like, and a curable solvent-type topcoating material using such a material. [Solving Means] A coating material is blended preferably in an amount of 60 to 90% by mass relative to paint film forming components thereby to form a curable solvent-based topcoating material. The coating material includes an oleophilic polyrotaxane which includes a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups which are placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule, at least one of the above-mentioned liner molecule and the cyclic molecule having hydrophobic modification group.

Abstract: There is provided a room-temperature drying aqueous overcoating medium containing 1 to 100 mass % of hydrophilic polyrotaxane with respect to the coating film forming component, where the hydrophilic polyrotaxane has a cyclic molecule, a linear molecule included in the cyclic molecule in a skewered manner and blocking groups arranged on opposite ends of the linear molecule to prevent elimination of the cyclic molecule from the linear molecule and at least one of the linear molecule and the cyclic molecule has a hydrophilic modifying group.

Abstract: There is provided a curable aqueous overcoating composition containing 1 to 90 mass % of hydrophilic polyrotaxane with respect to the coating film forming component, where the hydrophilic polyrotaxane has a cyclic molecule, a linear molecule included in the cyclic molecule in a skewered manner and blocking groups arranged on opposite ends of the linear molecule to prevent elimination of the cyclic molecule from the linear molecule and at least one of the linear molecule and the cyclic molecule has a hydrophilic modifying group.

Abstract: [Object] To provide a hydrophobic modified polyrotaxane soluble in an organic solvent, and a crosslinked polyrotaxane using this. [Solving Means] A hydrophobic modified polyrotaxane has a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups which are placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule. The cyclic molecule is cyclodextrin, and each of all or a part of the hydroxyl groups in the cyclodextrin is modified with a hydrophobic modification group. A crosslinked polyrotaxane is formed by combining this hydrophobic modified polyrotaxane and a polymer through the cyclic molecule.

Abstract: A material having crosslinked polyrotaxane which has further improved swelling properties, especially one having a crosslinked polyrotaxane which changes in swelling property with change in pH; and a material having a crosslinked polyrotaxane which is responsive especially at a high speed to a change of the surrounding electric field. The materials have a crosslinked polyrotaxane comprising at least two polyrotaxane molecules which each comprises cyclic molecules, a linear molecule which includes the cyclic molecules in cavities of cyclic molecules in a skewered manner, and capping groups, each of which locates at each end of the linear molecule in order to prevent the dissociation of the cyclic molecules, the least two polyrotaxane molecules having been bound to each other through a chemical bonding between the cyclic molecules thereof, wherein the cyclic molecules have hydroxy groups (—OHs) and part of the hydroxy groups are substituted with a group having an ionic group.

Abstract: [Object] To provide a hydrophobic linear polyrotaxane molecule which is soluble in an organic solvent, and a crosslinked polyrotaxane using the same. [Solving Means] A hydrophobic linear polyrotaxane molecule has a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule. The linear molecule is hydrophobic. The linear molecule is polycaprolactone and has a molecular weight ranging from 5,000 to 100,000. The cyclic molecule is ?-cyclodextrin, ?-cyclodextrin or ?-cyclodextrin. A crosslinked polyrotaxane is formed by combining the hydrophobic linear polyrotaxane molecule and a polymer through the cyclic molecule.

Abstract: An object of the present invention is to provide a polyrotaxane-containing solution by finding a good solvent for polyrotaxanes, and more particularly, to provide a polyrotaxane-containing solution by finding a good solvent for polyrotaxanes with a cyclodextrin as the cyclic molecule(s). The present invention provides a polyrotaxane-containing solution comprising polyrotaxane dissolved in a solvent selected from the group consisting of a nitrogen-containing organic solvent and an ionic liquid. In particular, a nitrogen-containing organic solvent such as N-methylmorpholine-N-oxide or hydrate thereof; a solution of a nitrogen-containing organic solvent such as N,N-dimethylacetamide containing as solute an alkali metal halide or alkaline earth metal halide such as lithium chloride; or an ionic liquid such as an N,N?-dialkylimidazolium salt or N-alkylpyridinium salt, is a good solvent for polyrotaxanes.

Abstract: [Object] To provide a modified hydrophilic polyrotaxane which is soluble in water or a water-like solvent, a cross-linked polyrotaxane using this, and a solvent for dissolving the modified hydrophilic polyrotaxane. [Solving Means] A modified hydrophilic polyrotaxane has a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups which are placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule. The cyclic molecule is cyclodextrin, and each of all or a part of the hydroxyl groups in the cyclodextrin is modified with a hydrophilic modification group. A cross-linked polyrotaxane is formed by combining this modified hydrophilic polyrotaxane and a polymer through the cyclic molecule. A solvent for dissolving this modified hydrophilic polyrotaxane contains at least one of water and a water-like solvent.

Abstract: A process for producing a polyrotaxane in a high yield and at a satisfactory cost without using a large excess of a pseudopolyrotaxane and/or without using a large excess of an activated reagent. The process for polyrotaxane production comprises: an inclusion step in which a carboxylated polyethylene glycol which is a polyethylene glycol carboxylated at each end is mixed with cyclodextrin molecules to obtain a pseudopolyrotaxane which comprises cyclodextrin molecules which include the carboxylated polyethylene glycol in their cavities as if the cyclodextrin molecules are spitted with the carboxylated polyethylene glycol; and a capping step in which the pseudopolyrotaxane is reacted with capping groups having —NH2 or —OH to obtain a polyrotaxane terminated at each end by a —CO—NH-(capping group) or —CO—O-(capping group).

Abstract: [Object] To provide a coating material for a room temperature curable solvent-borne overcoating material having chipping resistance and not allowing occurrence of cracks, and a room temperature curable solvent-borne overcoating material using the same, the room temperature curable solvent-borne overcoating material being excellent in abrasion resistance and in performance such as weather resistance, contamination resistance and adhesion. [Solving Means] A coating material is formed of a lipophilic polyrotaxane including a cyclic molecule, a linear molecule piercing through the cyclic molecule to include it, and blocking groups disposed at both end terminals of the linear molecule to prevent departure of the cyclic molecule. In the lipophilic polyrotaxane, at least one of the linear molecule and the cyclic molecule has a hydrophobic modification group.

Abstract: [Object] To provide a coating material for a curable solvent-based topcoating material, having excellent marring resistance, chipping resistance, producing no crack and excellent in performances such as weatherability, stain resistance, adhesion and the like, and a curable solvent-type topcoating material using such a material. [Solving Means] A coating material is blended preferably in an amount of 60 to 90% by mass relative to paint film forming components thereby to form a curable solvent-based topcoating material. The coating material includes an oleophilic polyrotaxane which includes a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups which are placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule, at least one of the above-mentioned liner molecule and the cyclic molecule having hydrophobic modification group.

Abstract: A material having crosslinked polyrotaxane which has further improved swelling properties, especially one having a crosslinked polyrotaxane which changes in swelling property with change in pH; and a material having a crosslinked polyrotaxane which is responsive especially at a high speed to a change of the surrounding electric field. The materials have a crosslinked polyrotaxane comprising at least two polyrotaxane molecules which each comprises cyclic molecules, a linear molecule which includes the cyclic molecules in cavities of cyclic molecules in a skewered manner, and capping groups, each of which locates at each end of the linear molecule in order to prevent the dissociation of the cyclic molecules, the least two polyrotaxane molecules having been bound to each other through a chemical bonding between the cyclic molecules thereof, wherein the cyclic molecules have hydroxy groups (—OHs) and part of the hydroxy groups are substituted with a group having an ionic group.

Abstract: The present invention is a heat radiating silicone composition containing (A) a perfluoroalkyl group-containing silicone oil expressed by the following formula (1), (B) a silicone oil, and (C) a heat radiating filler: where R1 is a C1 to C12 saturated hydrocarbon group, R2 is a hydrogen or a C1 to C12 saturated or unsaturated hydrocarbon group, R3 is an aryl group, Rf is a C1 to C12 perfluoroalkyl group, R4 is a group selected from among R1, R2, R3, Rf and OH, l and m are values of 1 or more on the average, and l+m+n is a number of 2 or more.

Abstract: The present invention provides a liquid crystalline material having flexibility and/or bendability and a method for preparing the material. The present invention provides a liquid crystalline polyrotaxane consisting essentially of a polyrotaxane, wherein the polyrotaxane comprises a linear molecule, a cyclic molecule(s) in which the linear molecule is included in cavity (cavities) of the cyclic molecule(s) in a skewered manner, and capping groups, each of which locates at each end of the linear molecule in order to prevent the dissociation of the cyclic molecule (s); the cyclic molecule of the liquid crystalline polyrotaxane comprises a mesogenic group, e.g., biphenyl groups represented by following formulae (1) to (3), and the liquid crystalline polyrotaxane has liquid crystalline property.

Abstract: According to the present invention, a strength of 120 to 200 kgf/mm.sup.2 in terms of 0.2% yield point and optionally a spring critical value of 55 to 150 kgf/mm.sup.2 are imparted to a high-strength stainless steel foil for corrugation by subjecting a thin sheet of a stainless steel comprising an alloy composed mainly of 10 to 40% by weight of Cr and 1 to 10% by weight of Al to final cold rolling and optionally subjecting the cold-rolled sheet to an aging treatment at a temperature in the range of from 80.degree. to 500.degree. C. after the completion of the final cold rolling. This enables corrugation to be effected at a high corrugation rate of 10 m/min or more.