摘要:
A coating composition contains as essential components one or more antifoulants and copolymer obtained from monomers mixture comprising monomer A represented by formula (1): ##STR1## wherein R.sup.1 to R.sup.3 each is a group selected from alkyl groups and aryl groups and may be the same or different, and X is an acryloyloxy group, a methacryloyloxy group, a maleinoyloxy group, or a fumaroyloxy group and monomer B represented by formula (2):Y--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.4 (2)wherein R.sup.4 is an alkyl group or an aryl group, Y is an acryloyloxy group, a methacryloyloxy group, a maleinoyloxy group, or a fumaroyloxy group, and n is an integer of 1 to 25.
摘要:
A coating composition comprising a rosin compound, a polymer containing organosilyl ester groups, and an antifoulant as essential components is disclosed. This rosin-based coating composition gives a coating film which forms no residue layer on the surface thereof over long-term immersion, is hence free from physical defects such as cracks and peeling and capable of maintaining a sufficiently high rate of film erosion and preventing the attachment of marine organisms over a long period of time has satisfactory suitability for recoating, and has the satisfactory ability to prevent marine-organism attachment over the out-fitting period.
摘要:
A hydrolyzable self-polishing coating composition for use in preventing attachment of organisms to the surface of structures submerged in seawater, which comprises an anifoulant and a copolymer of an organosilyl group-containing monomer and a hemiacetal ester group-containing monomer.
摘要:
An antifouling paint is described, that contains as its essential components an antifoulant and a polymer of one or more of the monomers A represented by general formula (1) and/or copolymer composed of one or more of the monomers A and one or mroe vinyl polymerizable monomers B that are copolymerizable with said monomer A: ##STR1## wherein X is a hydrogen atom or a methyl group; n is an integer of 2 to 4; and m signifies the average degree of polymerization and is zero or a real number. The antifouling paint may contain a slipping agent as the third essential component to provide an even greater fouling resistance.
摘要:
The present invention aims to suppress waste of charging power during charging and improve charging efficiency.A charging apparatus 1 for charging a cell group 24, in which a plurality of secondary cells 22 are connected in series, by supplying a charging current Ic to the secondary cells 22 is provided with an overcharge protection circuit 26 including discharge route circuits 34 provided to each of the secondary cells 22 and adapted to cause the secondary cells 22 to discharge during charging by connecting the secondary cells 22 to the discharge route circuits 34 based on cell voltages Vb of the secondary cells 22 or to stop discharging by cutting off the secondary cells 22 from the discharge route circuits 34; and a charger controller 10 for continuing charging while reducing the charging current Ic until the discharge of the secondary cell 22 having started discharging to the discharge route circuit 34 is stopped when the discharge of any one of the secondary cells 22 to the discharge route circuit 34 is started by the overcharge protection circuit 26.
摘要:
A polymerizable compound represented by formula (1): wherein each R1 independently represents at least one organic residue selected from the group consisting of alkylene groups, branched alkylene groups, cycloalkylene groups and arylene groups, R2 represents an organic residue derived from an alcohol compound, a phenol compound or a carboxylic acid compound, n represents an integer of 0 to 20, a production process of the polymerizable composition, a composition using the polymerizable compound, a cured product obtained by curing the composition and a production process of the cured product. The polymerizable compound exhibits a good adhesive property to a substrate such as glass and is imparted with radical polymerizability to enable heat curing and/or active energy ray curing.
摘要:
Paint compositions to be used for preventing deposition of organisms on marine structures or fishingnets used in the sea contain, as a vehicle, polymers obtained by polymerizing at least one of the unsaturated acid ester monomers shown by the general formulaR.sub.1 OOC--CX.dbd.CY--COOR.sub.2wherein R.sub.1 and R.sub.2 are alkyl groups having 1-4 carbon atoms, and X and Y are hydrogen, alkyl groups having 1 or 2 carbon atoms or halogen, or copolymerizing the unsaturated acid ester monomers having the above described formula with unsaturated monomers copolymerizable therewith. The coating film of the paint compositions has a high strength and a moderate solubility in sea water and exhibits a very high antifouling activity for a long period of time.
摘要:
A charging device supplies charge current to a battery group having plural secondary batteries connected in series to perform charging. In the charging device, a discharge route circuit for discharging charge current to be supplied to the secondary battery when the battery voltage of the secondary battery exceeds a predetermined voltage while charging is provided to every secondary battery. Also provided is a cut-off circuit for cutting off the discharge route circuit from each secondary battery after charging is completed. Discharge at a discharge route circuit is suppressed and energy efficiency is increased.
摘要:
A charging apparatus for charging a cell group, in which a plurality of secondary cells are connected in series, by supplying a charging current Ic to the secondary cells is provided with an overcharge protection circuit including discharge route circuits 34 provided to each of the secondary cells and adapted to cause the secondary cells to discharge during charging by connecting the secondary cells to the discharge route circuits based on cell voltages Vb of the secondary cells or to stop discharging by cutting off the secondary cells from the discharge route circuits; and a charger controller for continuing charging while reducing the charging current Ic until the discharge of the secondary cell having started discharging to the discharge route circuit is stopped when the discharge of any one of the secondary cells to the discharge route circuit is started by the overcharge protection circuit.