Abstract:
Disclosed is a parasol which can be opened/closed and a fan device which can maintain sufficient placement space for a fan, and maintain a sufficient amount of airflow without the fan being a nuisance. The parasol (1) is provided with: a hollow shaft (3); a cylindrical lathe (4) which is disposed on the outside of the shaft (3), and which slides relative to the shaft (3) in the axial direction (S1) thereof when the parasol (1) is opened and closed; a first fan (11) which is disposed inside the shaft (3) and which generates air; and air outlets (191, 192, 193, 194, 195, 196) which transmit the air generated by the first fan (11) to inside the parasol (1).
Abstract:
Photoresist base materials consisting of extreme ultraviolet sensitive organic compounds represented by the general formula (1): (1) [wherein A is a central structure consisting of an aliphatic group having 1 to 50 carbon atoms, an aromatic group having 6 to 50 carbon atoms, an organic group bearing both, or an organic group having a cyclic structure formed by repetition of these groups; B to D are each an extreme ultraviolet sensitive group, a group exhibiting a reactivity on the action of a chromophore sensitive to extreme ultraviolet rays, a C1-50 aliphatic or C6-50 aromatic group having such a group, an organic group having both groups, or a substituent having a branched structure; X to Z are each a single bond or an ether linkage; l to n are integers of 0 to 5 satisfying the relationship: l + m + n > 1; and A to D may each have a heteroatom-bearing substituent]. The invention provides photoresist base materials and photoresist compositions which enable ultrafine lithography with extreme ultraviolet rays or the like.
Abstract:
PROBLEM TO BE SOLVED: To easily produce an aliphatic polyimide, regardless of the structure of the aliphatic tetracarboxylic dianhydride, by reacting a bissilylated diamine derivative with an aliphatic tetracarboxylic dianhydride in an organic solvent and cyclizing the resultant poilyamic acid ester. SOLUTION: A bissilylated diamine derivative represented by formula II, wherein R2 is a divalent organic group constituting a diamine; and R3 is a monovalent organosilicon group, is reacted with a tetracarboxylic dianhydride represented by formula III, wherein R1 is a tetravalent organic group constituting an aliphatic tetracarboxylic acid in an organic solvent to give a polyamic acid ester containing repeating units represented by formula IV, wherein m is a positive integer; and R1, R2, and R3 are each the same in formula II or III, which is cyclized to give a polymide which contains repeating units represented by formula I, wherein m, R1, and R2 are each the same as described above and of which the logarithmic viscosity of the corresponding polyamic acid ester (in an organic solvent at 30 deg.C, with a concentration of 0.5 g/dl) is 0.05-5.0 dl/g.
Abstract:
PURPOSE:To produce inexpensively a polymer composed of directly bonded aromat rings and having avrel excellent mechanical strengths and heat resistance and a high molecular weight. CONSTITUTION:A process for producing an organic polymer composed of directly bonded aromatic rings by using a substituted benzene having an alkyl, alkoxy or hydroxy-alkyl substituent as a monomer, wherein the monomer is polymerized by using an iron (III) salt as an oxidizing agent in a solvent common to the monomer and the oxidizing agent.