Photosensitive resin, photosensitive composition and photo-crosslinked structure

The invention provides a photosensitive resin which can readily form, through photo-crosslinking, a surface coating which has hydrophilicity and high bioadaptability; a photosensitive composition containing the photosensitive resin; and a photo-crosslinked structure obtained from the photosensitive composition. The photosensitive resin is represented by the following formula (1): (wherein n represents a mean polymerization degree and is 5 or more; R1 and R2, which may be identical to or different from each other, each represent an alkylene group, an arylene group, an oxyalkylene group, or a single bond; each of X and Y represents a photosensitive unit represented by the following formula (2): or either one of X and Y represents a photosensitive unit represented by the above formula (2) and the other represents an amino group; R3 represents a group selected from among the groups represented by the following formula set (3): R4 represents a group selected from among the groups represented ...

Polymer composite

A polymer composite comprises a base material, and a polymer membrane provided on at least a part of the base material, the polymer membrane having at least hydrophilicity, and the polymer composite is used in a state exposed to water or a water-based solvent. The polymer membrane is a resin film formed by photo-crosslinking a photosensitive resin composition consisting essentially of a water-soluble polymer, and during crosslinking of the photosensitive resin composition, some of photosensitive groups of the photosensitive resin composition are bound to amino groups fixed to the surface of the base material, whereby the resin film is fixed to the base material.

Manufacturing method of polymer

A method for manufacturing a polymer of which structure is exactly controlled is disclosed.

Method for manufacturing thin-film solar cell

A method for manufacturing a thin-film solar cell substrate of group IB, IIIB and VIB elements of the Periodic Table, by using an apparatus for depositing selenium (Se) on the thin-film solar cell substrate. The apparatus has a base with gas inlet and outlet pipes. A bell jar is placed on top of the base with an O-ring interposed between them. A thin-film solar cell precursor and Se powder are placed in a recess formed in a lower heating jig, and the lower heating jig is positioned on the base. An upper heating jig is placed on top of the lower heating jig. The upper heating jig is vertically moved by a vertically actuating mechanism. The upper and lower heating jigs are heated under vacuum so as to diffuse Se to the thin-film solar cells, whereby a CuInSe2 alloy film is formed.

Polymer composite

A polymer composite comprises a base material, and a polymer membrane provided on at least a part of the base material, the polymer membrane having at least hydrophilicity, and the polymer composite is used in a state exposed to water or a water-based solvent. The polymer membrane is a resin film formed by photo-crosslinking a photosensitive resin composition consisting essentially of a water-soluble polymer, and during crosslinking of the photosensitive resin composition, some of photosensitive groups of the photosensitive resin composition are bound to amino groups fixed to the surface of the base material, whereby the resin film is fixed to the base material.

Method of Producing Cell Culture Container

To produce a cell culture container which is suitable for use in, for example, biochemical experiments, clinical experiments, and research and development of drugs. The production of the cell culture container includes providing a cell culture container base 1 having a plurality of wells serving as regions for culturing cells; applying a hydrophilic photosensitive composition to the bottom surface of each of the wells, to thereby form a coating 3; subjecting the coating 3 to patternwise light exposure; and removing an uncured portion of the coating through development, to thereby yield a cell culture container having, on the bottom surface of each well, a patterned hydrophilic coating layer formed of a photo-cured product.

FROZEN CELL IMMOBILIZED PRODUCT, PRIMARY HEPATOCYTE CULTURE TOOL, AND METHOD FOR PRODUCING PRIMARY HEPATOCYTE CULTURE TOOL

The present invention provides a frozen cell immobilized product which is obtained by applying a technique for freezing cultured cells to a technique for forming primary hepatocyte spheroids through co-culturing, and which can improve performance in an examination or a test using the technique for forming primary hepatocyte spheroids; a primary hepatocyte culture tool; and a method for producing the primary hepatocyte culture tool. According to the invention, a cell-adhesion region of a culture substrate is defined in a pattern; animal-derived adherent cells are cultured on the cell-adhesion region; and the cultured cells are frozen together with a freezing culture medium.

Photosensitive resin, photosensitive composition and photo-crosslinked structure

The invention provides a photosensitive resin which can readily form, through photo-crosslinking, a surface coating which has hydrophilicity and high bioadaptability; a photosensitive composition containing the photosensitive resin; and a photo-crosslinked structure obtained from the photosensitive composition. The photosensitive resin is represented by the following formula (1): (wherein n represents a mean polymerization degree and is 5 or more; R 1 and R 2 , which may be identical to or different from each other, each represent an alkylene group, an arylene group, an oxyalkylene group, or a single bond; each of X and Y represents a photosensitive unit represented by the following formula (2): or either one of X and Y represents a photosensitive unit represented by the above formula (2) and the other represents an amino group; R 3 represents a group selected from among the groups represented by the following formula set (3): R 4 represents a group selected from among the groups represented by the following formula set (4): at least one of R 3 and R 4 has at least one azido group; and R 5 represents a hydrogen atom, an alkyl group, an acetal-group-containing alkyl group, an aryl group, an aralkyl group, or a substituent containing a base-forming nitrogen atom).

MANUFACTURING METHOD OF POLYMER

A method for manufacturing a polymer of which structure is exactly controlled is disclosed. 1. A method for manufacturing a polymer , the method comprising:placing a first liquid containing a first monomer in a reaction container;adding a polymerization initiator to the first liquid to form a third liquid; andadding a second liquid containing a second monomer to the first liquid or the third liquid,wherein the second monomer has polymerizability higher than the first monomer.2. (canceled)3. The method of claim 1 ,wherein the second liquid further contains the first monomer.4. The method of claim 1 ,wherein the second liquid further contains a polymerization initiator.5. The method of claim 1 , further comprising: changing a temperature of the first liquid.6. The method of claim 1 , further comprising: terminating a polymerization reaction involved with at least the first monomer and the second monomer.7. The method of claim 1 , further comprising: first sampling a first portion of a reaction mixture placed in the reaction container.8. The method of claim 7 , further comprising: first checking at least one of molecular weight and ratio of units derived from the first monomer and the second monomer of polymers contained in the first portion.9. The method of claim 7 , further comprising: second sampling a second portion of a reaction mixture placed in the reaction container.10. The method of claim 9 , further comprising: second checking at least one of molecular weight and ratio of units derived from the first monomer and the second monomer of polymers contained in the second portion.11. The method of claim 7 ,wherein the first sampling is carried out during the adding of the second liquid to the first liquid or a third liquid.12. The method of claim 1 ,wherein the first liquid further contains the third monomer.13. The method of claim 12 ,wherein the second monomer has polymerizability higher than the third monomer.14. The method of claim 12 ,wherein the second liquid ...

Polymer composite

Manufacturing method of polymer

A method for manufacturing a polymer of which structure is exactly controlled is disclosed.

Method of producing cell culture container