摘要:
A process for preparing an urethane compound for medical instruments, characterized by reacting a hydroxyl compound (A) with an isocyanate compound (B) in the absence of a catalyst or in the presence of a reaction catalyst other than an organic tin compound to give an urethane compound (I). According to the process, the urethane compound showing high safety can be easily prepared, in particular, while molecular weight of the compound is controlled.
摘要:
A process for preparing an urethane compound for medical instruments, characterized by reacting a hydroxyl compound (A) with an isocyanate compound (B) in the absence of a catalyst or in the presence of a reaction catalyst other than an organic tin compound to give an urethane compound (I). According to the process, the urethane compound showing high safety can be easily prepared, in particular, while molecular weight of the compound is controlled.
摘要:
A process for preparing an ocular lens with a urethane compound comprising the steps of a) preparing a urethane compound by reacting at least one hydroxyl compound and at least one isocyanate compound in the presence of an organic iron compound, b) removing the organic iron compound from the urethane compound obtained in the step a) c) mixing the urethane compound obtained in the step b) with at least one compound selected from the group consisting of another copolymerizable compound, a crosslinking agent, a UV absorbent, a dye, a polymerization initiator, a photosensitizer, and an organic solvent to obtain a mixture, and d) curing the mixture obtained in the step c) to prepare a lens.
摘要:
A soft ocular lens material prepared by copolymerizing copolymer components consisting essentially of:(A) from 5 to 70 parts by weight of a fluorine-containing (meth)acrylate;(B) from 5 to 60 parts by weight of an alkoxy-containing (meth)acrylate;(C) from 3 to 45 parts by weight of a polysiloxane macromonomer having polymerizable groups at both terminals, of the formula I: ##STR1## (D) from 3 to 40 parts by weight of a polysiloxane macromonomer having polymerizable groups bonded via one or two urethane bonds to the siloxane main chain, of the formula II: ##STR2##
摘要:
A power supply device in which bars BB extend in one direction and connect the terminals of the battery cells adjacent to each other. The lines (20) are electrically connectable to the bars BB. The tabs TB electrically connect the bars BB to the lines (20). The bar BB is formed of a clad plate formed of a first metal (3A) and a second metal (3B). The bar BB includes first and second holders (3a and 3b), and a tab holder. The first and second holders (3a and 3b) are arranged in the first and second metals, respectively, and hold the terminals at holding positions. The tab holder is arranged in the first metal (3A), and holds the tab TB at a holding position. The impedance between the first holder (3a) and the tab holder is substantially equal to the impedance between the tab holder and the second holder (3b).
摘要:
Supply of supplementary fuel is controlled by activation of a valve in response to certain engine operating conditions or parameters. For example, the supplementary fuel may be supplied to facilitate starting and warming up a cold engine, or to cool and/or slow down an engine operating above a threshold speed.
摘要:
To provide a catalytic converter that reduces non-uniformity of temperature of a catalyst support and that can approach a uniform temperature distribution, and a structural body for supporting a catalyst that structures this catalytic converter. At a catalyst support, gradually decreasing width portions, at which a width thereof gradually decreases toward electrode centers, are formed at regions where electrodes, are contactingly disposed, as seen in a cross-section orthogonal to a direction in which exhaust flows. The width is shorter than a length of a center line at a given position. Heat generation and heat dissipation of the catalyst support are balanced overall.
摘要:
A composition for forming a chemical mechanical polishing pad having polishing characteristics such as a high polishing rate, an excellent planarity of the polished object, and less scratches of the polished object. The composition includes (A) a polyurethane having a carbon-carbon double bond on a side chain and (B) a cross-linking agent. The polyurethane (A) is preferably a thermoplastic polyurethane (A′) obtained by mixing at least components (a11) to (a13) and component (a2) in a proportion satisfying the following conditions (1) and (2) and reacting them.
摘要:
There is provided a slurry for a secondary battery electrode and an electrode for a secondary battery that produce satisfactory charge-discharge characteristics for secondary batteries, as well as a secondary battery that exhibits satisfactory charge-discharge characteristics. The invention provides a slurry for a secondary battery electrode comprising an electrode active material and an ambient temperature molten salt composed of a cation component and an anion component, an electrode for a secondary battery wherein an electrode active material layer is formed by coating the slurry for a secondary battery electrode onto a current collector, a process for production of an electrode for a secondary battery whereby the slurry for a secondary battery electrode is coated onto a current collector metal foil to form a coated film, and a secondary battery comprising a positive electrode and/or negative electrode fabricated using the electrode for a secondary battery, and an electrolyte.
摘要:
[Problem] To provide a safe ocular lens material having high oxygen permeability, excellent surface wettability, the excellent lubricity/easy lubricating property of surface, little in surface adhesive and superior flexibility and stress relaxation, in addition, suppressing elution of a monomer from the final product.[Means for Solving the Problem] An ocular lens comprising a compound (A) having an ethylenically unsaturated group and polydimethylsiloxane structure through a urethane bond and an 1-alkyl-3-methylene-2-pyrrolidone (B).[Selected Figure] None