Abstract: A switch includes a pair of fixed contacts disposed at a predetermined distance from each other; a movable contact arranged to be capable of contacting with and separating from the pair of fixed contacts; and an arc extinguishing container internally mounted with the pair of fixed contacts and the movable contact. The arc extinguishing container includes a resin container having a terminal retention plate portion adhesively bonded a pair of external connection terminals, and a side plate portion extending downward from an outer circumferential portion of the terminal retention plate portion, and formed with an open face, and a metal bucket-shaped body internally mounted with the movable contact and the pair of fixed contacts inserted into the side plate portion of the resin container. The are extinguishing container is formed by bonding the resin container and the metal bucket-shaped body to each other by an adhesive agent.

Abstract: A flame retardant resin treated article that excels in flame retardancy and is free from bleedout. A resin composition comprising a flame retarder of metal phosphinate represented by the general formula: (I) (in the formula, each of R1 and R2 is a C1-C6 alkyl or an aryl group having 12 or less carbon atoms; M is calcium, aluminum or zinc; and when M=aluminum, m=3, and otherwise m=2), a reactive organophosphorus flame retarder having an unsaturated group at its terminal and a resin wherein the total content of metal phosphinate and reactive organophosphorus flame retarder is in the range of 5 to 30 mass % is provided in molded form or coating form.

Abstract: Disclosed is a flame-retardant resin processed article having excellent flame retardance while being free from bleed-out. Specifically, a resin composition containing a cyclic phosphorus compound flame retardant, a hydrophilic silica powder having an average particle diameter of not more than 15 m, and a resin with the total content of the cyclic phosphorus compound and the hydrophilic silica powder being 10-45% by mass is molded into a certain shape or formed into a coating film. The hydrophilic silica powder is preferably composed of porous structures having a pore volume of not more than 1.8 ml/g and a pH of 4-7. More preferably, the hydrophilic silica powder has an oil absorption of not less than 50 ml/100 g in accordance with JIS K5101.

Abstract: A flame-resistant resin composition is disclosed that uses a non-halogen flame retardant as the flame retardant, and allows resin processed articles to be obtained which have superior flame resistance and heat resistance. The flame-resistant resin composition comprises a non-halogen flame retardant (A) containing a metal phosphinate (a) represented by the following formula (I) wherein, R1 and R2 respectively represent an alkyl group having 1 to 6 carbon atoms or an aryl group having 12 carbon atoms or less, M represents calcium, aluminum or zinc, m=3 when M is aluminum, and m=2 when M is other than aluminum, and an organic phosphorous flame retardant (b), an isocyanurate compound (B) having one or more glycidyl groups in the molecular structure thereof, and a thermoplastic resin (C).

Abstract: Disclosed is a reactive flame retardant which provides a resin with excellent flame retardance even when it is added in a small amount while being prevented from bleedout. Also disclosed is a flame-retardant resin processed article obtained by using such a reactive flame retardant. An organophosphorus compound represented by the general formula (I) below, wherein at least one or more of X1-X3 represent a group containing phosphorus and having a terminal unsaturated group, is used as a reactive flame retardant which is reactive with resins. A flame-retardant resin processed article can be obtained by solidifying the resin composition containing the organophosphorus compound and then reacting it through heating or application of radiation.

Abstract: A flame retardant resin treated article that excels in flame retardancy and is free from bleedout. A resin composition comprising a flame retarder of metal phosphinate represented by the general formula: (I) (in the formula, each of R1 and R2 is a C1-C6 alkyl or an aryl group having 12 or less carbon atoms; M is calcium, aluminum or zinc; and when M=aluminum, m=3, and otherwise m=2), a reactive organophosphorus flame retarder having an unsaturated group at its terminal and a resin wherein the total content of metal phosphinate and reactive organophosphorus flame retarder is in the range of 5 to 30 mass % is provided in molded form or coating form.

Abstract: Disclosed is a flame-retardant resin processed article having excellent flame retardance while being free from bleed-out. Specifically, a resin composition containing a cyclic phosphorus compound flame retardant, a hydrophilic silica powder having an average particle diameter of not more than 15 m, and a resin with the total content of the cyclic phosphorus compound and the hydrophilic silica powder being 10-45% by mass is molded into a certain shape or formed into a coating film. The hydrophilic silica powder is preferably composed of porous structures having a pore volume of not more than 1.8 ml/g and a pH of 4-7. More preferably, the hydrophilic silica powder has an oil absorption of not less than 50 ml/100 g in accordance with JIS K5101.

Abstract: Disclosed is a reactive flame retardant which provides a resin with excellent flame retardance even when it is added in a small amount while being prevented from bleedout. Also disclosed is a flame-retardant resin processed article obtained by using such a reactive flame retardant. An organophosphorus compound represented by the general formula (I) below, wherein at least one or more of X1-X3 represent a group containing phosphorus and having a terminal unsaturated group, is used as a reactive flame retardant which is reactive with resins. A flame-retardant resin processed article can be obtained by solidifying the resin composition containing the organophosphorus compound and then reacting it through heating or application of radiation.

Abstract: A recording medium manufacturing method has a surface treatment process which removes contamination from a surface of a thermoplastic resin support substrate and also improves its wettability. This surface treatment process is conducted prior to forming the layer structure, which includes at least a signal recording layer, onto the surface of the thermoplastic resin support substance. The support substance is placed in an active gas atmosphere, such as ozone, followed by an inert gas atmosphere, such as nitrogen. This surface treatment process generates little deterioration in the support substrate surface.

Abstract: A recording medium manufacturing method has a surface treatment process which removes contamination from a surface of a thermoplastic resin support substrate and also improves its wettability. This surface treatment process is conducted prior to forming the layer structure, which includes at least a signal recording layer, onto the surface of the thermoplastic resin support substance. The support substance is placed in an active gas atmosphere, such as ozone, followed by an inert gas atmosphere, such as nitrogen. This surface treatment process generates little deterioration in the support substrate surface.

Abstract: Both a cavity plate and a vibrating plate are made of polyether imide resin, and a polysulfone resin film having a thickness of 3 .mu.m is formed on one or both of the joining faces of the plates. The melt temperature of polysulfone resin is about 190.degree. C., and the heat deformation temperature of polyether imide resin is about 200.degree. C. When the cavity plate and the vibrating plate are contacted with each other through the polysulfone resin films and then heated at 190.degree. C. for one hour, therefore, the polysulfone resin films are fused to become a fused layer so that the plates are firmly joined. Since the heat deformation temperature of the cavity plate is 200.degree. C. which is higher by 10.degree. C. than the melt temperature (190.degree. C.) of the polysulfone resin films, the fusion does not cause ink flow paths of nozzles, etc. to be heat-deformed.

Abstract: A photoconductor for electrophotography includes an electroconductive substrate; and a photosensitive layer formed on the substrate. The photosensitive layer includes a charge generating substance consisting essentially of at least one polycyclic compound represent by general formula (I) and at least one azo compound represented by general formula (II). ##STR1## wherein X is selected from the group consisting of a hydrogen atom, a halogen atom and a cyano group and n is an integer of 0 to 4; ##STR2## wherein R is selected from the group consisting of a hydrogen atom, a halogen atom and a substituted or unsubstituted alkyl group and alkoxy group, Z1 is selected from the group consisting of a substituted or unsubstituted alkyl group, aryl group and aromatic heterocyclic group, Z.sub.2 is selected from the group consisting of a hydrogen atom, a cyano group, a carbomoyl group, a carboxyl group, an ester group and an acyl group, each of Z.sub.3 and Z.sub.

Abstract: A photoconductor for electrophotography comprises a substrate and a photosensitive layer formed thereon and including a novel hydrazone compound as a charge transporting substance. The hydrazone compound is represented by the following general formula: ##STR1## Wherein, A is selected from the residual group consisting of an aromatic residual group, a condensed polycyclic residual group, and a heterocyclic residual group, which groups may be or not may be substituted, R.sub.1 is selected from the atom or group consisting of any one of a hydrogen atom, a halogen atom, an alkyl group, an acyl group or a dialkylamino group, and each of R.sub.2 and R.sub.3 is selected from the group consisting of an alkyl group, an aryl group, an alkenyl group, an aralkyl group and a thenyl group, which groups may be or not may be substituted.

Abstract: A photoconductor for electrophotography comprises a substrate and a photosensitive layer formed thereon and including a novel hydrazone compound as a charge transporting substance. The hydrazone compound is represented by the following general formula: ##STR1## wherein, each of R.sub.1, R.sub.2 and R.sub.3 stands for any one of an alkyl group, an alkenyl group, an aralkyl group and an aryl group, which groups may be or not may be substituted, R.sub.4 stands for any one of a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an aralkyl group and an aryl group, which groups may be or not may be substituted an n stands for an integer of 0 to 1.

Abstract: A photoconductor for electrophotography comprises a novel azulenium compound as a charge generating substance. An azulenium compound is represented by the following general formula: ##STR1## Wherein, each of R.sub.1 to R.sub.9 stands for a hydrogen atom, a halogen atom, an alkoxy group, or an alkyl group, an aryl group, both of which may have a substituent(s), and X.sup..crclbar. stands for an anion residual group.

Abstract: A photoconductor for electrophotography comprises an electrically conductive substrate and a laminate formed on the substrate. The laminate includes a charge generating layer including a specific squarylium compound as a charge generating substance and a charge transporting layer including a hydrazone compound. One type of the specific squarylium compound is represented by the following general formula. ##STR1## Wherein, each of R1, R2, R5 and R6 stands for one of an alkyl group, an aralkyl group and alkenyl group, each of which groups may be or not may be substituted, or R1, forms a ring together with R2, R5 forms a ring together with R6, each of R3 and R4 stands for one of hydrogen atom, a halogen atom, a hydroxy group, an alkyl group and an alkoxy group.

Abstract: A photoconductor for electrophotography comprising a novel squarylium as a charge generating substance. A squarylium compound is represented by the following general formula: ##STR1## wherein, each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 stands for a hydrogen atom, a halogen atom, an alkyl group, an aryl group, or a nitro group, and each of R.sub.7 and R.sub.8 stands for a hydrogen atom or a hydroxy group.