286 results about "Polyrotaxane" patented technology

A hard coat film includes a transparent plastic film substrate; and a hard coat layer, wherein the hard coat layer is formed of a composition for forming a hard coat layer, the composition containing the following component (A), component (B), and an organic solvent:

Component (A): a polyrotaxane,

Component (B): a monomer having two or more ethylenically unsaturated groups.

A novel compound and novel gelatinous substance which have high absorbability, uniform expansion, and elasticity. Although conventional gels include chemical gels and physical gels, no novel gels or compounds have been realized which have fracture resistance, high entropic elasticity, and biodegradability. The present invention provides a novel compound and a novel gelatinous substance which each comprises a crosslinked polyrotaxane obtained by chemically bonding two or more polyrotaxane molecules through the cyclic molecules or rotators thereof.

Provided is a lithium secondary battery, comprising a cathode, an anode, and a porous separator or electrolyte disposed between the cathode and the anode, wherein the anode comprises: (a) an anode active layer containing a layer of lithium or lithium alloy, in a form of a foil, coating, or multiple particles aggregated together, as an anode active material; and (b) a thin layer of a high-elasticity polymer, disposed between the anode active layer and the porous separator or electrolyte; the polymer having a recoverable tensile strain from 2% to 1,500%, a lithium ion conductivity no less than 10⁻⁶ S/cm (typically up to 5×10⁻² S/cm) at room temperature, and a thickness from 1 nm to 10 μm, wherein the high-elasticity polymer contains a polyrotaxane network having a rotaxane structure or a polyrotaxane structure at a crosslink point of the polyrotaxane network.

A material comprising crosslinked polyrotaxanes which exhibits desired viscoelasticity, particularly stress-strain characteristics with a wide low-stress region, in spite of being free from solvent; and a process for production of the same. The material comprises a first polyrotaxane bearing first cyclic molecules and a second polyrotaxane bearing second cyclic molecules, and the first and second polyrotaxanes are crosslinked via the first and second cyclic molecules. The material is free from solvent and exhibits a stress of 2.0 MPa or below at 50% strain.

The present invention relates to a polymer film containing a binder resin and polyrotaxane having a specific structure, and a flexible light emitting element display device and a rollable display device including the coating film.

Sizing agent-coated reinforcing fibers include reinforcing fibers and a sizing agent containing a polyrotaxane, the reinforcing fibers being coated with the sizing agent. Provided are sizing agent-coated reinforcing fibers that provide a fiber-reinforced composite material with excellent mechanical properties, a method for producing the sizing agent-coated reinforcing fibers, a prepreg including the sizing agent-coated reinforcing fibers, and a fiber-reinforced composite material with excellent mechanical properties including the sizing agent-coated reinforcing fibers.

Disclosed are a material having high flexibility and a high dielectric constant, and a method for producing same: a material having a first polyrotaxane and a second polyrotaxane, wherein the first polyrotaxane comprises first blocking groups being disposed at both ends of a first pseudo-polyrotaxane—formed from the opening of a first circular molecule being enclathrated by being skewered by a first linear chain molecule—in a manner so that the first circular molecule does not detach; the second polyrotaxane comprises second blocking groups being disposed at both ends of a second pseudo-polyrotaxane—formed from the opening of a second circular molecule being enclathrated by being skewered by a second linear chain molecule—in a manner so that the second circular molecule does not detach; said first and second polyrotaxane are formed from crosslinking with the first and second circular molecules therebetween; said material is solvent free; and the material has a dielectric constant at 1 kHz of at least 6.0.

Disclosed are: a photocrosslinkable polyrotaxane having a high scratch resistance, low hysteresis loss and so on; a composition comprising the photocrosslinkable polyrotaxane and so on; a crosslinked body obtained from the composition; and methods for producing the same. Specifically disclosed are: a photocrosslinkable polyrotaxane comprising a cyclic molecule of polyrotaxane, wherein pseudo-polyrotaxane is formed by piercing the opening of a cyclic molecule by a straight-chain molecule to form a clathrate therewith and blocking groups are positioned at both ends of the pseudo-polyrotaxane to prevent the withdrawal of the cyclic molecule, said cyclic molecule of polyrotaxane having a group represented by -M-Y (wherein M is represented by formula II; X represents a straight-chain alkylene group having 1-8 carbon atoms, etc.; n is 1-10 on average; and Y represents a group having a photopolymerizable group); a composition comprising the photocrosslinkable polyrotaxane and so on; a crosslinked body derived from the composition; and methods for producing the same.

A photochromic composition comprising (A) a polyrotaxane having a composite molecular structure composed of an axial molecule and a plurality of cyclic molecules clathrating the axial molecule and (B) a photochromic compound.

A gel composition is provided, which in addition to being able to expect that various properties attributable to polyrotaxane will be retained, easily ensures stability, has superior shock absorbability and facilitates control of refractive index. The present invention provides a gel composition comprising a material having a network structure containing a polyrotaxane and a non-aqueous solvent, applications of the gel composition, and a process for preparing the gel composition.

The present invention aims to achieve compatibility between high conductivity and durability against the application of a DC voltage in the charging member of an electrophotographic apparatus for maintaining the image quality of the electrophotographic apparatus in association with an increase in speed of the electrophotographic apparatus and more severe use conditions thereof in recent years. Provided is a charging member having a conductive support and a conductive elastic layer, in which: the elastic layer contains a polymer having an alkylene oxide chain in a molecule thereof, an ion conductive agent, and a polyrotaxane; and the polyrotaxane has a structure in which a linear molecule penetrates the inside of the ring of a cyclic molecule having an ionic group, the linear molecule has two block groups, and the block groups are placed at both terminals of the linear molecule to prevent the cyclic molecule from leaving the linear molecule.

[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.

A polyrotaxane containing an affinity binding group has been designed and prepared. The polyrotaxane of the invention can be used for characterization and determination of the three-dimensional structures of biological molecules, such as proteins.

The invention provides a muck foundation material and a method for constructing a roadbed by using the foundation material. The foundation material comprises 50-70 parts of muck, 6-8 parts of a muck curing agent, 6-12 parts of pulverized coal ash, 6-12 parts of ground slag, 6-12 parts of cement, 0.8-1.5 parts of a secondary curing agent, 3-4 parts of emulsion powder, and 0.3-0.5 part of a stabilizing agent, wherein the muck curing agent comprises cinder, modified diatomite, attapulgite, silica fume, powdered activated carbon, peroxide, potassium permanganate, iron powder, polyrotaxane, sodiumpolyacrylate, an alkaline stimulating agent, a water reducing agent and a thickening agent. The muck foundation material is prepared through the following steps: first, curing the muck with the muck curing agent, then adding other raw materials, and performing secondary curing through the secondary curing agent, so that the muck foundation material is prepared. According to the muck foundation material disclosed by the invention, the curing course of the muck is simple, short in time and high in efficiency, the cured sludge and muck cannot generate secondary pollution, and the requirements ofthe foundation materials can be met.

The invention provides a supramolecular self-assembly biological chip. The supramolecular self-assembly biological chip comprises a substrate (1), first chain molecules (3) which are fixed on the surface of the substrate, and second chain molecules (4) which are fixed on the surface of the substrate, wherein the first chain molecules and the second chain molecules are fixed on the substrate at intervals; part of one end, which is far away from the substrate, of each first chain molecule is included by cyclodextrin (2); the cyclodextrin comprises a functional group which can be directly or indirectly bound with protein molecules; and each second chain molecule is not longer than each first chain molecule. Poly(pseudo)rotaxane which is formed by coating the cyclodextrin and the first chain molecules and the second chain molecules which are arranged uniformly at the intervals are arranged on a self-assembly layer on the surface of the biological chip, a three-dimensional space has a dense, controllable and changeable structure, and compared with a two-dimensional surface, the three-dimensional space can fix more detection molecules such as the protein molecules. Moreover, the invention also provides a preparation method and application of the biological chip.

[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.

The invention concerns a method for producing a three-dimensional object, in particular an artificial tooth, by stereolithography wherein a liquid photocurable resin composition is cured by light. Said photocurable resin composition contains, based on the total weight of the photocurable resin composition, (i) from 90 to 99.9% by weight of a radical polymerizable organic compound (A) selected from radical polymerizable monomers, oligomers, pre-polymers and mixtures thereof; and (ii) from 0.1 to 10% by weight of a photosensitive radical polymerization initiator (B). Said radical polymerizable organic compound (A) comprises, based on the weight of the radical polymerizable organic compound (A), from 0.5 to 20% by weight of a polyrotaxane compound comprising a polymer chain selected from polyethylene glycol (PEG), polypropylene glycol (PPG), polyethylene glycol - polypropylene glycol (PEG- PPG) block copolymer or polydimethylsiloxane (PDMS), onto which the cyclodextrin ring(s) is/are slipped and wherein the cyclodextrin is derivatized with at least a radical polymerizable group. The invention also concerns a relative liquid photocurable resin composition and articles produced thereby.

There is provided a cured product of an epoxy resin composition, in which the compounding composition and the phase-separated structure of the epoxy resin composition are controlled so that the balance between rigidity and toughness of the cured product is superior compared with those of cured products of conventional epoxy resin compositions. A cured product of an epoxy resin composition, which has both superior rigidity and superior toughness compared with conventional materials can be produced by curing an epoxy resin composition comprising an epoxy resin, a polyrotaxane having graft-chain-modified cyclic molecules and a curing agent for the epoxy resin.

Base materials for tissue regeneration which enable the tissue regeneration, have mechanical properties needed in the tissue regeneration and can disappear via degradation in vivo after the completion of the tissue regeneration; and implantable materials with the use of the same. The above-described base materials for tissue regeneration comprise polyrotaxane, wherein biocompatible groups having bulky substituents have been introduced via hydrolyzable bond into both ends of a linear molecule penetrating plural cyclic molecules, or a polyrotaxane hydrogel having a network structure formed by crosslinking the cyclic molecules to each other, the biocompatible groups to each other, or the cyclic molecules to the biocompatible groups in each polyrotaxane molecule.

The invention relates to a lubricating strip for a shaver. The lubricating strip is at least composed of an elastomer and polyrotaxane. The polyrotaxane is prepared with, by weight, 100 parts of a linear polymer, 200-500 parts of cyclic molecule and 1-15 parts of capped macromolecule. The cyclic molecule is cyclodextrin. The linear polymer is one or more selected from PEG, PPG, PCL, PVA, PMMA, PA and PB. The capped macromolecule is capped on the two ends of the linear polymer. A mass ratio of the elastomer to polyrotaxane is 1:0.1-1. The lubricating strip also comprises a moisturizing agent which is one or more selected from olive oil, jojoba oil and glycerin. According to the invention, the elastomer and polyrotaxane are mixed; the mixture is heated and is subjected to a melting reaction under a temperature of 100-250 DEG C; the temperature is reduced to 90-110 DEG C, and the moisturizing agent is added; the mixture is mixed and stirred, and is subjected to granulation and shaping, such that the lubricating strip is obtained. The preparation method is simple. The lubricating strip has the advantage of good friction lubricating performance. The lubricating strip can be used multiple times, and is suitable for industrialized production.

Provided is a rechargeable alkali metal-sulfur cell comprising an anode active material layer, an electrolyte, and a cathode active material layer containing multiple particulates of a sulfur-containing material and wherein at least one of the particulates is composed of one or a plurality of sulfur-containing material particles being embraced or encapsulated by a thin layer of a high-elasticity polymer (containing a polyrotaxane network having a rotaxane structure or a polyrotaxane structure at a crosslink point of the polyrotaxane network) having a recoverable tensile strain from 2% to 1,500%, a lithium ion conductivity no less than 10⁻⁶ S/cm at room temperature, and a thickness from 0.5 nm to 10 μm. This battery exhibits an excellent combination of high sulfur content, high sulfur utilization efficiency, high energy density, and long cycle life.