Nippon Kayaku Kabushiki Kaisha

Pioneer Electronic Corporation

Mitsubishi Materials Corporation

Pioneer Communications Corporation

Sharp Kabushiki Kaisha Corporation

Pioneer Communication Corp.

Masahiro Hirano

Masahiro Imaizumi

Eiichi Nishihara

Naoyuki Ochi

Toyofumi Asano

Hiroyasu Takeuchi

Masaru Kudo

Sumio Ichimura

Yasumasa Akatuka

Toyohumi Asano

Masaru Kudou

Toshihiro Matsumoto

Tsuyoshi Okazaki

Akira Ishii

Masataka Nakanishi

Masaki Shinmoto

Shogo Nishiwaki

Yasumasa Akatsuka

Katsuhiko Oshimi

Hiroo Koyanagi

Nobuhiro Waka

Makiko Kogo

Shigeru Matsuyama

Sumio Itimura

Masayuki Itai

Tsunetoshi Sakano

Syouichi Hayasibara

Kouta Yoshii

Naoki Toneda

A liquid crystal sealing material comprising (a) a radiation curable resin represented by the general formula (1) below, (b) a photopolymerization initiator and (c) a filler having an average particle diameter of not more than 3 &#x3bc;m. (In the formula (1), Rrepresents a hydrogen atom or a methyl group; Rmay be the same or different and represents a hydrogen atom, a halogen atom, a hydroxyl group, a monovalent linear, branched or cyclic alkyl group having 1-10 carbon atoms or an alkoxy group having 1-10 carbon atoms; m represents an integer of 1-4; Rrepresents a hydrogen atom or a methyl group; Rrepresents a linear, branched or cyclic alkyl group having 1-10 carbon atoms; 1 represents a range of positive numbers from 1 to 5; and the repeating unit number n represents a range of positive numbers from 0 to 20.)

Radiation curable resin, liquid crystal sealing material, and liquid crystal display cell using same

An objective of this application is to provide a sealant for liquid crystals witch is extremely less apt to contaminate liquid crystals and has high adhesion strength. This application discloses a sealant for liquid crystals comprising as essential ingredients (a) a radiation-curable resin represented by the general formula (1): wherein Rrepresents a hydrogen atom or a methyl group, Rrepresents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branch or cyclic monovalent alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, m represents an integer of 1 to 4, and may be the same or different, Rrepresents a hydrogen atom or a methyl group, and the number n of the repeating units is a positive number in the range of 0 to 20; (b) a photopolymerization initiator; and (c) an inorganic filler having an average particle diameter of 3 &#x3bc;m or less.

Sealant for liquid crystal and liquid-crystal display cell made with the same

The present invention relates to a sealant for liquid crystals having extremely low contamination nature to a liquid crystal, excellent coatability and bondability to a substrate, long service life and pot life and high adhesive strength. A sealant for liquid crystals of the present invention is characterized by comprising (a) an epoxy resin represented by general formula (1): (wherein a represents an integer of 2 to 4; n represents 0 to 3 (average value); R represents a divalent hydrocarbon group of 2 to 6 carbon atoms; A represents a polyvalent aromatic group; and G represents a glycidyl group, provided that when n is 0, (a) an epoxy resin represented by general formula (1) is a bisphenol S-type.), (b) a thermo-curing agent, (c) and a filler having average particle diameter of not larger than 3 &#x3bc;m.

Liquid crystal sealing agent and liquid crystalline display cell using the same

To provide a photopolymerization initiator having an extremely low possibility of contaminating liquid crystals, and a liquid crystal sealing material using such a photopolymerization initiator. A liquid crystal sealing material comprising (a) a reactive photopolymerization initiator represented by the general formula (1) and (b) a photocurable resin: (wherein R1 represents a divalent straight chain, branched or cyclic lower alkylene group having 1 to 10 carbon atoms or an arylene group; R2 represents a divalent straight chain, branched or cyclic lower alkylene group having 1 to 10 carbon atoms or an arylene group; Ar represents an arylene group; R3 represents a hydrogen atom or a methyl group; X and Y respectively represent O or S; and Z is a hydroxyl group or a morpholino group).

Liquid crystal sealing material and liquid crystal display cell using same

A liquid crystal sealant comprising an epoxy resin represented by the following formula (1): [Formula 1] (in the formula, n denotes an average polymerization degree and is a positive number of 0&#x2013;5) as a resin component, a curing agent, a curing accelerator and an inorganic filler is excellent in screen printability as a liquid crystal sealant in making a liquid crystal display device and can provide excellent reliability in moisture resistance for the liquid crystal display device obtained).

Liquid crystal sealant, liquid crystal display device using the same and method for producing the device

Provided is a black sealant for liquid crystal cell comprising (a) an epoxy resin, (b) a novolac resin, (c) a curing accelerator and (d) a titanium-type black pigment. The use of the black sealant for liquid crystal cell of the present invention can provide a liquid crystal cell which prevents light leakage of the liquid crystal cell from the sealed portion, which has a high electrical insulation property and which is excellent in an adhesion strength and a humidity resistance.

Black sealant for liquid crystal cell and liquid crystal cell

A calcium phosphate granular cement contains mixed powders obtained by mixing .alpha.-type calcium tertiary phosphate or calcium quaternary phosphate with a calcium phosphate compound selected from calcium primary phosphate, calcium secondary phosphate and mixtures thereof at a Ca/P molar ratio of 1.35 to 1.49 or 1.30 to 1.90. A minimum diameter of each cement granule is 0.1 to 1.0 mm.

Calcium phosphate granular cement and method for producing same

A simultaneous voice-call system for a cordless telephone where communication between a base unit and a plurality of portable units is established through the use of a radio communication channel. The base unit includes a transmitter/receiver which establishes a communication channel between base unit and plurality of portable units. The transmitter/receiver has a control channel and a plurality of talk channels. A portable-unit-identifying number memory stores portable-unit-identifying numbers preassigned to the plurality of portable units. A first simultaneous call controller responsive to a simultaneous call command from a user to establish a talk-channel between the plurality of portable units by transmitting through the control channel portable-unit-identifying numbers stored in the portable-unit-identifying number memory, a vacant-talk-channel number, and a simultaneous call code to the plurality of portable units. The talk-channel is a radio communication channel through which a message is transmitted from the base unit to the plurality of portable units. The simultaneous call code indicates that the message is transmitted to the portable units at the same time. Each of the plurality of portable units includes a portable-unit-identifying number assigned thereto and a second simultaneous call controller.

Simultaneous voice-call system for cordless telephone

A portable-to-portable call transfer system for cordless telephone. The base unit is connected with a portable unit over a radio channel. The call-transfer requesting signal relay responds to a transfer requesting signal from a calling portable unit to hold an incoming call while also transmitting both the transfer requesting signal and the channel number of a talk channel to a called portable unit over a control channel. The portable-to-portable line setting section transmits the off-hook signal to the calling portable unit over the talk channel and connects the receiver output of a transmitter-receiver to the transmitter input of the transmitter-receiver so as to enable the calling portable unit to send a voice message to the called portable unit upon reception of an off-hook signal from the called portable unit. The portable-to-portable line disabling section disables the connection of the receiver-output-to-transmitter-input and connects the incoming call to the called portable unit upon reception of an on-hook signal from the calling portable unit. The call-transfer requesting signal generator outputs a call-transfer requesting signal to the base unit. The call-transfer requesting signal indicates a portable unit to which the incoming call is transferred. The call-transfer line setting section permits to send the voice message upon reception of the off-hook signal via the base unit. The call-transfer line disabling section establishes a talk channel between the base unit upon reception of the on-hook signal via the base unit.

Portable-to-portable call transfer system for cordless telephone

A portable-to-portable talk system for cordless telephone. The transmitter-receiver of base unit has a control channel and a plurality of talk channels. The transmitter-receiver transmits the channel number of a vacant talk channel to a first portable unit and to a second portable unit over the control channel upon reception of a connection request from the first portable unit over the control channel. The transmitter-receiver is then switched from the control channel to the vacant talk channel after having transmitted the channel number of vacant talk channel over the control channel. Then, the receiver output of the transmitter-receiver is connected to the transmitter input. The transmitter-receiver of the portable unit has the control channel and the plurality of talk channels and transmits the connection request to the base unit over the control channel. The transmitter-receiver of portable unit is switched from the control channel to the vacant talk channel upon reception of the channel number of vacant talk channel from the base unit. A Tx/Rx selecting signal is transmitted over the vacant talk channel to other portable unit via the base unit when an operator of portable unit completes his speech. The second transmitter-receiver operates as a receiver when the Tx/Rx selecting signal is outputted from the local portable unit, and as a transmitter upon reception of the Tx/Rx selecting signal from other portable unit so that an operator is permitted to begin his speech.

Portable-to-portable talk system for cordless telephone

A hydraulic calcium phosphate cement composition contains as main ingredients powders of calcium tertiary phosphate and calcium secondary phosphate with a molar ratio of Ca/P of 1.400 to 1.498. The calcium tertiary phosphate contains .alpha.-type calcium tertiary phosphate and .beta.-type calcium tertiary phosphate. The cement composition may contain a hardening liquid including water.

Hydraulic calcium phosphate cement composition and cement composition

Growing community of inventors

Saitama, Japan

Masahiro Hirano