Abstract: This invention relates to a graphite intercalation compound in the form of a film, which is obtained by intercalating a donor type, an acceptor type or a covalent type material between the layers of graphite film obtained by thermal treatment of poly(phenylene oxadiazole). The obtained intercalated graphite film has a large scale area and has an extremely improved stability compared with known graphite intercalation compounds.

Abstract: A solid electrolyte of an electrolytic capacitor is constituted of an ion radical complex salt of N-isoamylisoquinolinium(TCNQ).sub.2, or the N-isoamylisoquinolinium(TCNQ).sub.2 and neutral TCNQ, and the solid electrolyte has high heat fusability, high heat stability and splendid infiltration ability into an anode oxide film, and is disposed between the anode oxide film and a cathode, and therefore, a capacitance, dielectric loss and life of the capacitor are improved.

Abstract: A solid electrolytic capacitor comprising an anodized valve metal anode and a cathode provided in face-to-face relation with the anode, between which a layer of a solid electrolyte is provided. The solid electrolyte consists essentially of a tetracyanoquinodimethane complex salt and neutral tetracyanoquinodimethane. In order to suppress generation of toxic gases such as HCN, polyhydric alcohols may be further added to the solid electrolyte.

Abstract: Organic semiconductor compositions comprising CN group-bearing semiconductive salts and an additive capable of suppressing evolution of a toxic gas such as HCN upon excessive heating of the salts. The additive is selected from polyhydric alcohols, saccharides, and fine powder of metals such as iron, nickel and cobalt. Solid electrolytic capacitors using the organic semiconductor compositions are also described.

Abstract: A process for producing a curable resin comprises reacting (a) at least one cyanate ester compound selected from the group consisting of polyfunctional cyanate esters having 2 or more cyanato groups per one molecule, prepolymers of the cyanate esters or mixtures thereof with (b) at least one compound having 1,2-epoxy group(s) and radical-polymerizable unsaturated double bond(s) in its molecule, the cyanate ester compound (a) and the compound (b) being used so that the ratio of the cyanato group to the 1,2-epoxy group is in the range of about 1:0.25 to about 1:2, in the presence of (c) a radical polymerization inhibitor at a temperature of about 90.degree.--about 140.degree. C.The curable resin produced according to the present invention is capable of giving cured products having excellent heat resistance and electrical properties.

Abstract: A conductive pyrolytic product obtained by thermally treating specific types of heat-resistant polymers including polyamide-imide, an aromatic polymer having a heterocyclic ring of a specific type and an aromatic polyamide under certain temperature and atmospheric conditions. A conductive composition using the pyrolytic product in the form of a powder is also disclosed.

Abstract: A conductive pyrolytic product obtained by thermally treating spefici types of heat-resistant polymers including polyamide-imide, an aromatic polymer having a heterocyclic ring of a specific type and an aromatic polyamide under certain temperature and atmospheric conditions. A conductive composition using the pyrolytic product in the form of a powder is also disclosed.

Abstract: Novel organic heat-sensitive semiconductive materials containing tetracyanoquinodimethane (TCNQ) as electron acceptor and exhibiting inherent resistivity-temperature characteristics. The materials include (N-n-propylthiazolium).sup.+ (TCNQ).sup.- (TCNQ), (N-n-butylthiazolium).sup.+ (TCNQ).sup.- (TCNQ) and(N-n-butyl pyridinium).sup.+ (TCNQ).sup.- (TCNQ). These three compounds can be prepared by reacting TCNQ with iodides of corresponding cations, respectively. The heat-sensitive materials have particular utility in the field of timing or heat-sensitive elements.

Abstract: Organic heat-sensitive semiconductive compounds composed of (N-n-propylpyridinium) (7,7,8,8-tetracyanoquinodimethane).sub.2 and (N-n-propylthiazolium) (7,7,8,8-tetracyanoquinodimethane).sub.2 or (N-n-butylthiazolium) (7,7,8,8-tetracyanoquinodimethane).sub.2. The compound using the propylthiazolium component exhibits phase transition phenomena in a wide range of temperatures lower than that of the basic component of (N-n-propylpyridinium) (TCNQ).sub.2. While, the compound using the butylthiazolium component shows inherent temperature hystereses different from that of the basic component.

Abstract: Novel organic heat-sensitive semiconductive materials containing tetracyanoquinodimethane (TCNQ) as electron acceptor and exhibiting inherent resistivity-temperature characteristics. The materials include (N-n-propylthiazolium).sup.+ (TCNQ).sup.- (TCNQ), (N-n-butylthiazolium).sup.+ (TCNQ).sup.- (TCNQ) and (N-n-butylpyridium).sup.+ (TCNQ).sup.- (TCNQ). These three compounds can be prepared by reacting TCNQ with iodides of corresponding cations, respectively. The heat-sensitive materials have particular utility in the field of timing or heat-sensitive elements.

Abstract: Novel organic heat-sensitive semiconductive materials containing tetracyanoquinodimethane (TCNQ) as electron acceptor and exhibiting inherent resistivity-temperature characteristics. The materials include (N-n-propylthiazolium).sup.+ (TCNQ).sup.- (TCNQ), (N-n-butylthiazolium).sup.+ (TCNQ).sup.- (TCNQ) and (N-n-butylpyridium).sup.+ (TCNQ).sup.- (TCNQ). These three compounds can be prepared by reacting TCNQ with iodides of corresponding cations, respectively. The heat-sensitive materials have particular utility in the field of timing or heat-sensitive elements.

Abstract: A safety hook is provided with a spring loaded closure segment normally closing the mouth of the hook. A pin carried by the segment is normally engaged by a spring loaded crank latch. The crank latch prevents the pin and segment from rotating to open the hook mouth until the crank latch is first rotatably released under the influence of a force acting to rotate the latch in a direction opposite to the direction of rotation which would occur under the influence of the force which would be transmitted from the segment to the latch in opening.

Abstract: The electrolyte is composed of a complex salt of 7,7,8,8-tetracyanoquinodimethane(TCNQ) and a nitrogen-containing polymer capable of dissolving the salt. The capacitor characteristics are largely affected by both the molecular weight and the amount of the polymer, and the capacitor of improved characteristics is provided by the use of the polymer of a mean molecular weight between 2,000 and 200,000 in an amount between 2 and 10% by weight of the TCNQ salt.