Abstract: A power conversion device comprising, a power converter that outputs signal to the motor to vary the motor's output frequency, output voltage and output current and control unit that controls the power converter, the control unit is, calculating the first power from the output voltage and output current, calculating the second power from the output current, electrical circuit parameters and frequency estimates, calculating the first phase error estimate so that the first power follows the second power in the first frequency domain, calculating the second phase error estimate different from the first frequency domain in a second frequency domain, controlling the frequency estimates so that the first phase error estimate or the second phase error estimate follows the command value of the phase error estimate.

Abstract: The present invention relates to antifouling compositions comprising compounds of formula IA and/or IB that are highly effective against marine biofouling of surfaces of ships and marine structures, their use for inhibiting marine biofouling, as well as antifouling paints comprising said compositions.

Abstract: The present invention relates to antifouling compositions comprising copper di(ethyl 4,4,4-trifluoroacetoacetate) (Cu(ETFAA)2) that are highly effective against marine biofouling of surfaces of ships and marine structures, their use for inhibiting marine biofouling, as well as antifouling paints comprising said compositions.

Abstract: A gel-type polymer electrolyte, wherein said polymer comprises (A) an ethylene-unsaturated carboxylic acid copolymer or a derivative thereof and (B) a polyalkylene oxide having a hydroxyl group at one terminal thereof or a derivative thereof, which are bonded together by an ester bond. The gel-type polymer electrolyte has a high ionic conductivity, and makes it possible to provides a cell which has excellent charge/discharge characteristics at low temperatures as well as at high temperatures.

Abstract: The present invention provides an antifouling paint composition having a non-aqueous dispersion resin having a core-shell structure which is constituted of (a) a hydrophilic core component comprising a polymer of ethylenically unsaturated monomers of which 5-75% by weight comprise free acid groups and ?3% by weight comprises silyl ester groups, (b) a shell component having a polymer of ethylenically unsaturated monomers of which <3% by weight comprises free acid groups or silyl ester groups, said resin having an acid value 15-400 mg KOH/g wherein the core component accounts for ?80% of the acid value of the resin, said paint composition having rosin wherein ?90% by weight of the rosin has conjugated, non-aromatic double bonds, and ?25% thereof being metal resinate which constitutes 1-40% by wet weight of the composition, the dry weight ratio between (i) NAD resin and (ii) rosin and metal resinates being 100:15 to 15:100.

Abstract: A gel-type polymer electrolyte, wherein said polymer comprises (A) an ethylene-unsaturated carboxylic acid copolymer or a derivative thereof and (B) a polyalkylene oxide having a hydroxyl group at one terminal thereof or a derivative thereof, which are bonded together by an ester bond. The gel-type polymer electrolyte has a high ionic conductivity, and makes it possible to provides a cell which has excellent charge/discharge characteristics at low temperatures as well as at high temperatures.

Abstract: The present invention provides an antifouling pain composition comprising a non-dispersion resin having a core-shell structure which is constituted of (a) a hydrophilic core component comprising a polymer of ethylenically unsaturated monomers of which 5-75% by weight comprise free acid groups and ?3% by weight comprises silyl ester groups, (b) a shell component comprising a polymer of ethylenically unsaturated monomers of which <3% by weight comprises free acid groups or silyl ester groups, said resin having an acid value 15-400 mg KOH/g wherein the core component accounts for ?80% of the acid value of the resin, said paint composition comprising rosin wherein S90% by weight of the rosin has conjugated, non-aromatic double bonds, and ?25% thereof being metal resinate which constitutes 1-40% by wet weight of the composition, the dry weight ratio between (i) NAD and (ii) rosin and metal resinates being 100:15 to 15:100.

Abstract: A scale has marks or a point-symmetrical shape which are arranged in matrix. The scale and an article to be measured in dimension are positioned without any relative movement. An image sensor unit detects a predetermined portion of the article and the marks of the scale corresponding to the predetermined portion of the article selectively and successively, and the image sensor unit generates output signals in accordance with the detected results of the article and the scale. The output signals are processed to calculate the dimension of the article.

Abstract: Disclosed are curing agents for epoxy resins consisting of modified polyoxyalkylenepolyamines obtained by the addition reaction of an alkyleneimine to a polyoxyalkylenepolyamine, preferably a polyoxypropylenepolyamine or polyoxyethylenepolyalkylamine, and ethyleneimine or propyleneimine in acid medium.

Abstract: Disclosed are novel curing agents for polyurethanes comprising reaction products of (1) a polyoxy alkylenepolyamine with (2) an alpha-substituted acrylic acid derivative wherein the substituent has a terminal hydroxyl group or (3) with a compound having an oxyrane ring and reaction products of (1) and (2) above, with (3) and (1) and (3) above, with (2). Also disclosed is a process for making polyurethanes by condensing a polyol with an isocyanate in the presence of the present curing agents in an amount ranging from 5 to 100 percent by weight of the polyol.

Abstract: A hydrocarbon resin having improved color and thermal stability is prepared from a petroleum cracking or reforming fraction containing cationically polymerizable hydrocarbons and having a boiling range of 140.degree. to 280.degree. C. The petroleum fraction is first heat-treated with an .alpha., .beta.-unsaturated dicarboxylic acid anhydride at 50.degree. to 250.degree. C., and then polymerized in the presence of a catalyst. The hydrocarbon resin is useful as a binder component in hot-melt adhesives, pressure-sensitive adhesives and thermofusible traffic paints.

Abstract: A process for preparing a hydrocarbon resin which comprises copolymerizing (A) a hydrocarbon fraction boiling within the range of 130.degree. to 300.degree. C. obtained by cracking, reforming and/or refining petroleum with (B) dicyclopentadiene in the presence of a Friedel-Crafts catalyst in a proportion such that the resulting hydrocarbon resin contains, based on the total weight thereof, 20 to 80% of a unit derived from the dicyclopentadiene (B).A hydrocarbon resin having a number average molecular weight of 300 to 2500, a softening point of 40.degree. to 180.degree. C., a bromine number of 5 to 100 g/100 g, and a Gardner color hue of 5 to 17, prepared by the above process. This hydrocarbon resin is useful as an adhesive component of pressure-sensitive adhesives and hot-melt composition.