摘要:
A room-temperature curable organopolysiloxane composition is provided, which includes (A) an organopolysiloxane with the terminals blocked with a hydroxyl group, a hydrolysable group, or both these types of groups, and (B) an organosilicon compound containing a hydrolysable group, a partial hydrolysis-condensation product thereof, or a mixture of the two, and (C) a polysiloxane containing an oxyalkylene group bonded to a silicon atom via, for example, a C—C—Si linkage. Application of this composition to an underwater structure is able to generate an antifouling coating that is effective in preventing the adhesion and growth of aquatic organisms on the surface of the underwater structure, and displays superior long term endurance of this antifouling effect.
摘要:
A room temperature curable organopolysiloxane composition comprising (A) a diorganopolysiloxane end-capped with a hydroxy or alkoxy group, (B) a silane crosslinker, (C) an aluminum hydroxide powder surface treated with a silane, siloxane or silazane, and (D) a platinum catalyst is shelf stable and smoothly extrudable prior to curing, and cures into a silicone rubber having long-lasting self-extinguishing properties. The composition is best suited as an adhesive to electrical and electronic parts.
摘要:
A room temperature curable organopolysiloxane composition comprising (A) a branched organopolysiloxane having specific radicals on side chains or on side chains and ends of the polymer, (B) fumed silica, (C) an organooxysilane or a partial hydrolytic condensate thereof, and (D) a condensation catalyst is improved in stability during storage under sealed conditions and cures into an elastomeric product whose physical properties change little even when used under rigorous conditions as encountered in proximity to automotive engines.
摘要:
In a mobile communication system having plural cells for presenting plural types of communication service to plural mobile stations, information of allowance of delay of call connection is attached to a call to the mobile station, and when delay of call connection is not allowed as seen from this information of allowance, the mobile station is paged simultaneously through all cells in the location registration area, and when delay of call connection is allowed, the mobile station is paged sequentially in the unit of certain cells in the location registration area. Accordingly, the control traffic required for location registration and paging can be decreased.
摘要:
The transmitter includes a first bit generator, a modulator, a second bit generator and a bit converter. The first bit generator generates bits to be transmitted based on the first wireless scheme. The modulator for the first wireless scheme performs at least amplitude modulation of a multiple level on the bits generated by the first bit generator. The second bit generator generates a bit to be transmitted based on the second wireless scheme. The bit converter converts the bit generated by the second bit generator and inputs converted bits to the modulator wherein the bit converter converts the bit generated by the second bit generator so that a signal showing High in the second wireless scheme is modulated to amplitude of a high level in the multiple level in the modulator.
摘要:
A transmitter includes a power measurement unit, a carrier sense unit, and a transmission unit. A first frequency band is allocated to a TDMA system. The power measurement unit measures a receiving power over a part of a first frequency band and a second frequency band. The carrier sense unit continues to check for a certain duration whether the receiving power is smaller than a threshold. The transmission unit generates a transmission signal including a dummy signal and a data signal when the receiving power has been smaller than the threshold for the certain duration. Moreover, the transmission unit transmits the transmission signal using the second frequency band.
摘要:
In a wireless terminal having a wireless transceiver and a wireless receiver which operates with lower power than the wireless transceiver, when the wireless receiver receives, from a base station, a notification message notifying that data addressed to the terminal is existent, the wireless transceiver is turned on to acquire the data.
摘要:
A wireless communication apparatus for performing communication using a first communication scheme which transmits a signal using amplitude shift keying and a second communication scheme which suppresses communication with others except a communication counterpart by transmitting a transmission suppression signal before communication is started. The apparatus includes: a first signal generation unit configured to generate transmission data; a modulation unit configured to generate first and second signals having different amplitudes by amplitude-shift keying the transmission data; a second signal generation unit configured to generate the transmission suppression signal having a signal length corresponding to that of the first signal; and a transmission unit configured to transmit the transmission suppression signal at the timing when the first signal is transmitted.
摘要:
An anti-fouling condensation curing organopolysiloxane composition is provided comprising in admixture, (A) 100 parts by weight of a base polymer in the form of a diorganopolysiloxane having at least two silicon atom-bonded hydroxyl or hydrolyzable groups in a molecule, at least 2 mol % of entire substituent groups being phenyl groups, (B) 0.5 to 30 parts by weight of a silane having at least two hydrolyzable groups or a partial hydrolytic condensate thereof, and (C) 5 to 100 parts by weight of a non-reactive dialkylpolysiloxane. The composition cures at room temperature to form a coating which is non-toxic, non-detrimental to the environment, and effective for preventing aquatic organisms from depositing and growing thereon over a long term.
摘要:
[PROBLEM TO BE SOLVED] To provide an organopolysiloxane paint composition capable of forming an antifouling coating film having an excellent long-term antifouling property. [SOLUTION] A curable composition obtained by mixing: (A) 100 parts by weight of a reaction curable silicone rubber with: (B) 1 to 100 parts by weight of an organopolysiloxane mixture including a product obtained by an R2OH elimination reaction of: (B1) an organopolysiloxane represented by: (R2O)((R2O)2SiO)n-1Si(OR2)3 wherein n is an integer of 2 or more and R2 each is independently a monovalent hydrocarbon group, and (B2) an organopolysiloxane having at least one structure represented by: ≡SiR3OH wherein R3 is a divalent hydrocarbon group, in a molecule.