摘要:
It is an object of the present invention to provide a basic crosslinked polymer having excellent ion exchange and catalyst properties with high resistance to thermal degradation which is, therefore, useful for a broad range of application, a method for producing said crosslinked polymer with great ease and high efficiency, and methods of using said crosslinked polymer.A crosslinked polymer having a tertiary amine and/or a quaternary ammonium salt structure, said crosslinked polymer has a tertiary amine structure at either end of at least one crosslink structure.
摘要:
An electrical connector having a shielding shell. The shielding shell disposed about an insulating housing mounted on a circuit board. The shielding shell including a first shell and a second shell. The first shell having a first side wall. The first side wall having a first locking member. The second shell having a second side wall. The second side wall having a second locking member corresponding to the first locking member. When the second locking member engages the first locking member the first side wall overlaps with the second side wall to prevent movement of the second shell in a vertical and horizontal direction in relation to the first shell.
摘要:
Crosslinked polymers excellent in ion exchange capacity and catalytic activity and in resistance to thermal decomposition and widely applicable in various fields of use; a crosslinking agent which is suited for use as a raw material in the production of crosslinked polymers; a method of producing crosslinked polymers; a method of producing a spherical particle which is suited for use in the production of crosslinked polymers; a method of producing a hydroxy alkyl (meth)acrylate; and a method of producing glycols using the crosslinked polymers are provided. The crosslinked polymer has at least one crosslink structure and a tertiary amine structure and/or a quaternary ammonium salt structure, wherein at least one crosslink structure is represented by the following general formula (1):
摘要:
A coaxial connecter and a method for assembling the same are provided, in which there is little variation in the amount of holding an inner conductor between connection terminals and the connection between the inner conductor and the connection terminals is achieved with high reliability. The coaxial connector includes a housing, an inner contact, and an outer contact. The inner contact is secured to the housing and includes a conductor mounting portion and a conductor holding arm with a lock. The conductor holding arm is integrally formed with the conductor mounting portion. The outer contact is secured to the housing, as well. Either the housing or the conductor mounting portion is provided with a holding portion into which the lock is press-fitted when the conductor holding arm is folded toward the conductor mounting portion.
摘要:
Economical and efficient processes for producing an &agr;, &bgr;-unsaturated carboxylic acid heterocycle-inserted ester and an &agr;,&bgr;-unsaturated carboxylic acid polyheteroalkylene ester as well as a catalyst suited for use in economically and efficiently producing an &agr;,&bgr;-unsaturated carboxylic acid ester are provided. The invention provides (1) a process for producing an &agr;,&bgr;-unsaturated carboxylic acid ester which comprises reacting an &agr;,&bgr;-unsaturated carboxylic acid ester with a heterocyclic compound, (2) a process for producing an &agr;,&bgr;-unsaturated carboxylic acid ester which comprises reacting an &agr;,&bgr;-unsaturated carboxylic acid with a heterocyclic compound in the presence of a polymerization inhibitor and a metal oxide catalyst, and (3) a catalyst for the production of an &agr;,&bgr;-unsaturated carboxylic acid ester comprising a metal oxide.
摘要:
A coaxial connecter and a method for assembling the same are provided, in which there is little variation in the amount of holding an inner conductor between connection terminals and the connection between the inner conductor and the connection terminals is achieved with high reliability. The coaxial connector includes a housing, an inner contact, and an outer contact. The inner contact is secured to the housing and includes a conductor mounting portion and a conductor holding arm with a lock. The conductor holding arm is integrally formed with the conductor mounting portion. The outer contact is secured to the housing, as well. Either the housing or the conductor mounting portion is provided with a holding portion into which the lock is press-fitted when the conductor holding arm is folded toward the conductor mounting portion.
摘要:
An electrical connector for cards is enabled to accommodate a plurality of types of card devices having different numbers of contact points. A housing is capable of receiving a first card, having conductive pads at predetermined positions, and a second card 250, having a plurality of conductive pads 252a, 252b at least one region that corresponds to the conductive pads of the first card. A plurality of contacts 36, 38, 46, 48, 56, and 58, for contacting the plurality of conductive pads 252a, 252b of the second card 250, are provided within the region that corresponds to the conductive pad of the first card.
摘要:
The invention provides a method of liquid-phase reaction using a soluble metallic catalyst in which the soluble metallic catalyst is caused to coexist with an anion-exchange resin during the reaction and the reaction is conducted under such conditions that 50% or more of the soluble metallic catalyst is adsorbed onto the anion-exchange resin. The anion-exchange resin having the soluble metallic catalyst adsorbed thereon is separated from the liquid reaction mixture to thereby recover the soluble metallic catalyst and reuse it in a liquid-phase reaction. The soluble metallic catalyst is efficiently used, recovered, and reused with great ease at low cost in various liquid-phase reactions using the soluble metallic catalyst.
摘要:
There is provided a connector assembly including a pair of connectors each attached to a surface of the circuit board, which provides a positive tactile response when the connectors are correctly connected to each other and assures reliable electrical connection of the connectors to the circuit boards and reliable fixing of the connectors to the circuit boards. A soldering peg of one connector has a pair of engaging arms each of which is spaced apart from a wall of an insulating housing of the connector and capable of being resiliently deformed outwardly. A soldering peg of the other connector has a pair of engaging arms each of which is spaced apart from a wall of an insulating housing of the connector and capable of being resiliently deformed inwardly. The engaging arms of the connectors are unloaded when the connectors are completely connected to each other.
摘要:
There is provided a connector assembly including a pair of connectors each attached to a surface of the circuit board, which provides a positive tactile response when the connectors are correctly connected to each other and assures reliable electrical connection of the connectors to the circuit boards and reliable fixing of the connectors to the circuit boards. A soldering peg of one connector has a pair of engaging arms each of which is spaced apart from a wall of an insulating housing of the connector and capable of being resiliently deformed outwardly. A soldering peg of the other connector has a pair of engaging arms each of which is spaced apart from a wall of an insulating housing of the connector and capable of being resiliently deformed inwardly. The engaging arms of the connectors are unloaded when the connectors are completely connected to each other.