It is an object of the present invention to provide a pattern forming method capable of easily forming a phase-separated structure with high accuracy, even in the case of widening the applicable range of a pattern size. The present invention relates to a pattern forming method comprising: applying an under coating agent onto a substrate, and applying a self-assembly composition for pattern formation to the surface of the substrate, onto which the under coating agent has been applied, and then forming a self-assembly film according to self-assembly phase separation, wherein the self-assembly composition for pattern formation comprises a block copolymer comprising a polymerization unit (a) having at least one selected from a structure represented by a formula (103) and a structure represented by a formula (104), and a polymerization unit (b) having a structure represented by a formula (105).

It is an object of the present invention to provide a pattern forming method capable of easily forming a phase-separated structure with high accuracy, even in the case of widening the applicable range of a pattern size. The present invention relates to a pattern forming method comprising: applying an under coating agent onto a substrate, and applying a self-assembly composition for pattern formation to the surface of the substrate, onto which the under coating agent has been applied, and then forming a self-assembly film according to self-assembly phase separation, wherein the self-assembly composition for pattern formation comprises a block copolymer comprising a polymerization unit (a) having at least one selected from a structure represented by a formula (103) and a structure represented by a formula (104), and a polymerization unit (b) having a structure represented by a formula (105).

Microspheres, compositions including the microspheres, and methods of using the microspheres are disclosed herein. The microspheres can be substantially spherical and can include a copolymer of a monomer (such as an acrylic monomer) and a cyclodextrin or a derivative thereof. The microspheres can also include a therapeutic agent, such as a platinum-based drug.

Microspheres, compositions including the microspheres, and methods of using the microspheres are disclosed herein. The microspheres can be substantially spherical and can include a copolymer of a monomer (such as an acrylic monomer) and a cyclodextrin or a derivative thereof. The microspheres can also include a therapeutic agent, such as a platinum-based drug.

The patent provides a superabsorbent polymer hydrogel xerogel sponge and a preparation method and an application thereof. The sponge is a three-dimensional network porous sponge with chitosan as its skeleton, superabsorbent polymer as its branched chain, and macromolecule or polymer with flexible structure as its cross-linking agent. The sponge can be prepared by a one-pot method. The product has porous structure, having the characteristic of superabsorbent and maintaining integrity and certain mechanical strength after water absorption. The material can be used in the emergency hemostasis of large arteriovenous hemorrhage. The effect is better than that of the existing materials in the market. The superabsorbent hydrogel xerogel sponge provided by the invention has the advantages of simple preparation process, low cost. The product has outstanding hemostatic effect, good safety, with no heat production and no residue, and has significant medical value and industrial potential.

The patent provides a superabsorbent polymer hydrogel xerogel sponge and a preparation method and an application thereof. The sponge is a three-dimensional network porous sponge with chitosan as its skeleton, superabsorbent polymer as its branched chain, and macromolecule or polymer with flexible structure as its cross-linking agent. The sponge can be prepared by a one-pot method. The product has porous structure, having the characteristic of superabsorbent and maintaining integrity and certain mechanical strength after water absorption. The material can be used in the emergency hemostasis of large arteriovenous hemorrhage. The effect is better than that of the existing materials in the market. The superabsorbent hydrogel xerogel sponge provided by the invention has the advantages of simple preparation process, low cost. The product has outstanding hemostatic effect, good safety, with no heat production and no residue, and has significant medical value and industrial potential.

The present invention provides a spherical powder having properties, such as an excellent strength, toughness, and deformation recovery, and provides a method for producing same. The present invention provides: a spherical powder containing a crosslinked body formed having (A) a polyrotaxane in which both ends of a pseudopolyrotaxane, which are formed by inclusion of the opening of a cyclic molecule by threading therethrough with a linear molecule, are provided with a capping group so that dethreading of the linear molecule is prevented, in particular, a spherical powder having an average particle diameter of 0.5 to 1,000 m, preferably 1 to 500 m, more preferably 1 to 300 m, and still more preferably 1 to 150 m; and a method for producing this spherical powder.

The present invention provides a spherical powder having properties, such as an excellent strength, toughness, and deformation recovery, and provides a method for producing same. The present invention provides: a spherical powder containing a crosslinked body formed having (A) a polyrotaxane in which both ends of a pseudopolyrotaxane, which are formed by inclusion of the opening of a cyclic molecule by threading therethrough with a linear molecule, are provided with a capping group so that dethreading of the linear molecule is prevented, in particular, a spherical powder having an average particle diameter of 0.5 to 1,000 m, preferably 1 to 500 m, more preferably 1 to 300 m, and still more preferably 1 to 150 m; and a method for producing this spherical powder.

Microspheres, compositions including the microspheres, and methods of using the microspheres are disclosed herein. The microspheres can be substantially spherical and can include a copolymer of a monomer (such as an acrylic monomer) and a cyclodextrin or a derivative thereof. The microspheres can also include a therapeutic agent, such as a platinum-based drug.

Microspheres, compositions including the microspheres, and methods of using the microspheres are disclosed herein. The microspheres can be substantially spherical and can include a copolymer of a monomer (such as an acrylic monomer) and a cyclodextrin or a derivative thereof. The microspheres can also include a therapeutic agent, such as a platinum-based drug.