- NOVEL TETRACARBOXYLIC DIANHYDRIDE, POLYIMIDE RESIN AND METHOD FOR PRODUCING THE SAME, PHOTOSENSITIVE RESIN COMPOSITIONS, PATTERNING PROCESS, METHOD FOR FORMING CURED FILM, INTERLAYER INSULATING FILM, SURFACE PROTECTIVE FILM, AND ELECTRONIC PARTS
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The present invention has been made in view of the circumstances herein. An object of the present invention is to provide: a tetracarboxylic dianhydride which can lead to a polyimide usable as a base resin of a photosensitive resin composition capable of forming a fine pattern and obtaining high resolution without impairing excellent characteristics such as mechanical strength and adhesiveness; a polyimide resin obtained by using the tetracarboxylic dianhydride; and a method for producing the polyimide resin. The tetracarboxylic dianhydride is shown by the following general formula (1).
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Paragraph 0279
(2019/06/17)
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- A method of manufacturing an alkylene glycol ether (poly)
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PROBLEM TO BE SOLVED: To provide a method for producing a (poly)alkylene glycol diether, introducing the oxyalkylene groups of the optional mole number of addition and optional terminal alkyl groups by using a metallosilicate catalyst having 10 to 1,000 ratio of SiO2/M2O3as an ether interchange reaction catalyst. SOLUTION: This method for producing the (poly)alkylene glycol diether includes a process of obtaining the (poly)alkylene glycol diether by the ether interchange reaction of a first (poly)alkylene glycol monoether with a second (poly)alkylene glycol monoether in the presence of the metallosilicate catalyst having 10 to 1,000 ratio of SiO2/M2O3(wherein, M is ≥1 kind selected from the group consisting of Al, Ga, Ge, B, Zn, P, Zr, Ti, Cr, Be, V and As). COPYRIGHT: (C)2012,JPOandINPIT
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Paragraph 0054; 0055
(2016/10/17)
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- Printable cross-linked polymer blend dielectrics. Design strategies, synthesis, microstructures, and electrical properties, with organic field-effect transistors as testbeds
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We report here the synthesis and dielectric properties of optimized, cross-linked polymer blend (CPB) dielectrics for application in organic field-effect transistors (OFETs). Novel silane cross-linking reagents enable the synthesis of CPB films having excellent quality and tunable thickness (from 10 to ～500 nm), fabricated both by spin-coating and gravure-printing. Silane reagents of the formula X3Si-R-SiX3 (R = -C 6H12- and X = Cl, OAc, NMe2, OMe, or R = -C2H4-O-C2H4- and X = OAc) exhibit tunable reactivity with hydroxyl-containing substrates. Dielectric films fabricated by blending X3Si-R-SiX3 with poly(4-vinyl)phenol (PVP) require very low-curing temperatures (～110°C) and adhere tenaciously to a variety of FET gate contact materials such as n +-Si, ITO, and Al. The CPB dielectrics exhibit excellent insulating properties (leakage current densities of 10-7 ～ 10-8 A cm-2 at 2.0 MV/cm) and tunable capacitance values (from 5 to ～350 nF cm-2). CPB film quality is correlated with the PVP-cross-linking reagent reactivity. OFETs are fabricated with both p- and n-type organic semiconductors using the CPB dielectrics function at low operating voltages. The morphology and microstructure of representative semiconductor films grown on the CPB dielectrics is also investigated and is correlated with OFET device performance.
- Kim, Choongik,Wang, Zhiming,Choi, Hyuk-Jin,Ha, Young-Geun,Facchetti, Antonio,Marks, Tobin J.
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p. 6867 - 6878
(2008/12/23)
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- Heterobifunctional multivalent inhibitor-adaptor mediates specific aggregation between Shiga toxin and a pentraxin
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(Figure Presented) The first example of a multivalent heterofunctional inhibitor-adaptor, called "BAIT", is described. This multivalent inhibitor-adaptor is able to capture a "target" receptor (Shiga toxin) through its recognition of one ligand of a heterobivalent headgroup while the other ligand binds to an endogenous "trap" protein (serum amyloid P component, SAP). BAIT showed markedly enhanced inhibition of toxin activity. An efficient synthesis of this multivalent cluster containing heterobifunctional ligands was accomplished by chemical and chemoenzymatic approaches.
- Solomon, Dmitry,Kitov, Pavel I.,Paszkiewicz, Eugenia,Grant, Gordon A.,Sadowska, Joanna M.,Bundle, David R.
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p. 4369 - 4372
(2007/10/03)
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- Crosslinking agent based on linear hydroxypolyallyl ether
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An allyl type crosslinking agent for use in production of a super water-absorbent polymer comprising a polymerizable compound having a carbon-carbon double bond or a salt thereof, comprising a linear hydroxypolyallyl ether having at least one hydroxyl groups and at least two allyl groups obtained by allyletherification of hydroxyl groups in a linear polyol compound selected from the group consisting of erythritol, xylitol and sorbitol, is provided. This allyl type crosslinking agent is highly soluble in an aqueous solvent, and can give an excellent super water-absorbent polymer, which cannot be obtained in the prior arts, having high levels of both of water absorptivity under atmospheric pressure and water absorptivity under pressurized conditions are obtained.
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- Synthesis of oxathiacrown compounds by the reactions of sulfur dichloride with unsaturated compounds and their extraction characteristics
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Published data of the last 10-15 years on the use of the reactions of sulfur dichloride with various unsaturated compounds for the synthesis of oxathia- and thiacrown compounds and study of their extraction characteristics toward various transition and heavy metals are reviewed. Some previously unpublished results and associated experimental data are also included.
- Abramov,Anisimov,Bobyleva
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p. 261 - 273
(2007/10/03)
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- gem-Difluorocyclopropanes: An improved method for their preparation
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By treatment with dibromodifluoromethane and triphenylphosphine, four unfunctionalized olefins, four enethers and one bis-enether were converted to the gem-difluorocyclopropanes 1-9. The yields were considerably increased and isomerizations at the double bonds were avoided if the reactions were carried out in the presence of a macrocyclic polyether such as "18-crown-6" and if, in addition, the reagents were employed in moderate excess.
- Bessard, Yves,Mueller, Ulrich,Schlosser, Manfred
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p. 5213 - 5221
(2007/10/02)
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