Abstract: The disclosure describes plastic formed products comprising:one selected from the group consisting of a thermoplastic resin and a thermosetting resin; and0.1 to 10 wt % of at least one selected from the group consisting of ferric oxide hydroxide particles, hematite particles, magnetite particles and maghemite particles;wherein (1) the average major axial diameter or the plate diameter of said ferric oxide hydroxide particles is 0.02 or 2.0 .mu.m and the average aspect ratio or the plate ratio thereof is 2 to 20, (2) the average particle size of said hematite particles, magnetite particles and maghemite particles is 0.01 to 1.0, the BET specific surface area thereof is 1 to 120 m.sup.2 /g and the water content on the surfaces thereof is not less than 0.02 wt %/m.sup.2 /g.

Abstract: A peroxide-vulcanizable fluorine-containing elastomer containing iodines as cross-linking sites, capable of producing vulcanization products having a distinguished heat resistance is produced by polymerization reaction of a fluorinated olefin having 2 to 8 carbon atoms in the presence of a diiodide compound represented by the following general formula:I--R--where R is a divalent fluorohydrocarbon group, chlorofluorohydrocarbon group or hydrocarbon group, having 2 to 8 carbon atoms, respectively, and 2,2-difluoroiodoethylene.

Abstract: 2,2 bis(3-mercaptophenyl)hexafluoropropane ?bisthiophenol AF! is obtained in good yield by chlorosulfonating 2,2'-bisphenylhexafluoropropane and reducing the thus quantitatively obtained 2,2'-bis(3-chlorosulfonylphenyl)hexafluoropropane with zinc under acidic conditions and is effectively used as a cross-linking agent for a fluorine-containing elastomer having halogenophenyl groups as cross-linkable groups.

Abstract: A novel fluorine-containing copolymer elastomer having bromine groups as cross-linkable groups, which comprises about 45 to about 80% by mole of tetrafluoroethylene, about 50 to about 20% by mole of a perfluoro(vinylether) represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2).sub.2 (OCF.sub.2)nOCF.sub.3where n is an integer of 1 to 5, and about 0.2 to about 5% by mole of a bromine-containing unsaturated monomer compound, sum total being 100% by mole, gives vulcanization products having distinguished resistances to chemicals, low temperature and heat.

Abstract: A novel bisaminothiophenol compound represented by the following general formula: ##STR1## where Rf is a perfluoroalkylidene group having 1 to 10 carbon atoms, is used as a cross-linking agent for fluorine-containing elastomers having CN groups as cross-linkable groups.

Abstract: A fluorine-containing elastomer composition, which comprises a terpolymer of tetrafluoroethylene, perfluoro(lower alkyl vinyl ether) or perfluoro (lower alkoxy-lower alkyl vinyl ether) and cross-linkable cyano group-containing (perfluorovinylether), and a bis(aminothiophenol) compound represented by the following general formula as a cross-linking agent: ##STR1## wherein A is an alkylidene group having 1 to 6 carbon atoms, a perfluoroalkylidene group having 1 to 10 carbon atoms, a SO.sub.2 group, an O atom, a CO group or a carbon-carbon bond capable of directly bonding two benzene rings and one of X and Y is an amino group, while the other is a mercapto group, can produce cross-linked fluororubber moldings having an improved compression set.

Abstract: The disclosure describes a method of incinerating combustible wastes comprising the step of incinerating said combustible wastes in the presence of a calcium compound and particles selected from the group consisting of iron oxide particles, ferric oxide hydroxide particles and mixed particles thereof.

Abstract: A perfluoro unsaturated nitrile compound represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2)nOCF(CF.sub.3)CNis produced by reaction of chlorine or bromine to a perfluoro unsaturated carboxylic acid ester represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2)nOCF(CF.sub.3)COORfollowed by reaction with ammonia, thereby converting the ester group to an acid amide group, and then conducting a dehydration reaction and a dehalogenation reaction of the resulting perfluoro unsaturated carboxylic acid amide represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2)nOCF(CF.sub.3)CONH.sub.2in any desired sequence, and is effectively applied as a cross-linking site monomer for fluorine-containing elastomers.

Abstract: A perfluoro unsaturated nitrile compound represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2)nOCF(CF.sub.3)CNis produced by reaction of chlorine or bromine to a perfluoro unsaturated carboxylic acid ester represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2)nOCF(CF.sub.3)COORfollowed by reaction with ammonia, thereby converting the ester group to an acid amide group, and then conducting a dehydration reaction and a dehalogenation reaction of the resulting perfluoro unsaturated carboxylic acid amide represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2)nOCF(CF.sub.3)CONH.sub.2in any desired sequence, and is effectively applied as a cross-linking site monomer for fluorine-containing elastomers.

Abstract: A perfluoro unsaturated nitrile compound represented by the following general formula:CF.sub.2 =CFO(CF.sub.2)nOCF(CF.sub.3)CNis produced by reaction of chlorine or bromine to a perfluoro unsaturated carboxylic acid ester represented by the following general formula:CF.sub.2 =CFO(CF.sub.2)nOCF(CF.sub.3)COORfollowed by reaction with ammonia, thereby converting the ester group to an acid amide group, and then conducting a dehydration reaction and a dehalogenation reaction of the resulting perfluoro unsaturated carboxylic acid amide represented by the following general formula:CF.sub.2 =CFO(CF.sub.2)nOCF(CF.sub.3)CONH.sub.2in any desired sequence, and is effectively applied as a cross-linking site monomer for fluorine-containing elastomers.

Abstract: A fluorine-containing elastomer composition comprising a fluorine-containing elastomer having a cyano group as a cross-linking agent and a bisamidoxime compound represented by the following general formula as a vulcanizing agent: ##STR1## where n is an integer of 1 to 10, gives vulcanization products having a satisfactory compression set without any problem of processability such as roll kneadability, etc. during the heading or during the vulcanization of the fluorine-containing elastomer having a cyano group as a cross-linkable group.

Abstract: A fluorine-containing elastomer composition comprising a fluorine-containing elastomer having a cyano group as a cross-linkable group and a bisamidrazone compound represented by the following general formula as a vulcanizing agent: ##STR1## wherein Rf is one of the following groups:(CF.sub.2).sub.n, CFX(OCF.sub.2 CFX).sub.m O(CF.sub.2).sub.nandCFX(OCF.sub.2 CFX).sub.p O(CF.sub.2).sub.n O(CFXCF.sub.2 O).sub.q CFXhas considerably improved roll kneadability and processability during the vulcanization-molding, and gives vulcanization products having good heat resistance and solvent resistance.

Abstract: When a novel bisamidoxime compound represented by the following general formula: ##STR1## where R is an alkylidene group having 1 to 6 carbon atoms, or a perfluoroalkylidene group having 1 to 10 carbon atoms, is used as a vulcanizing agent for fluorine-containing elastomers having cyano groups as cross-linkable groups, the resulting vulcanizates having a satisfactory compression set are obtained without any problem of processability such as roll kneadability, etc.

Abstract: A novel bifunctional vinyl ether compound having an aromatic ring, represented by the following general formula: ##STR1## where X is a halogen atom and n is an integer of 1 to 5, effective as a copolymer component for fluorine-containing elastomers is produced by adding a chlorine atom or a bromine atom (Y) to CF.sub.2 .dbd.CFO(CF.sub.2)nCOOR, where R is a lower alkyl group, then subjecting the resulting CF.sub.2 YCFYO(CF.sub.2)nCOOR to hydrolysis and acid chloridation, followed by reaction with monohalogenobenzene, reaction with SF.sub.4 to convert --CO-- to --CF.sub.2 --, and dechlorination or debromination, or by subjecting CF.sub.2 .dbd.CFO (CF.sub.2)nCOOR to hydrolysis and acid chloridation, followed by reaction with monohalogenobenzene and reaction with SF, to convert --CO-- to --CF.sub.2 --.

Abstract: Novel compound, 2,2-bis(4-carboxyphenyl)hexafluoropropane bisamidrazone, obtained by conversion of the carboxy groups of 2,2-bis(4-carboxyphenyl)hexafluoropropane to acid chloride groups, followed by reaction with ammonia; dehydration reaction of the resulting 2,2-bis(4-carboxyphenyl)hexafluoropropane diamide; reaction of the thus obtained 2,2-bis(4-cyanophenyl)hexafluoropropane with alcohol; and reaction of the resulting 2,2-bis(4-carboxyphenyl)hexafluoropropane bisiminoalkyl ether with hydrazine is a useful vulcanizing agent for fluorine-containing elastomer having cyano group.

Abstract: A fluoroelastomer having a copolymer composition comprising 50 to 80% by mole of tetrafluoroethylene, 20 to 45% by mole of perfluoro(lower alkyl vinyl ether) and 0.1 to 2% by mole of perfluoro(allylbenzene), the sum total being 100% by mole, and an intrinsic viscosity of 0.1 to 2.0 dl/g has a good vulcanization rate.

Abstract: A fluorine-containing elastomer composition comprising a terpolymer of tetrafluoroethylene, perfluoro(lower alkyl vinyl ether) and cyano group-containing (perfluorovinylether), and a less expensive of the ammonium salt of organic or inorganic acid as a curing agent produce a vulcanization product having good heat resistance and solvent resistance, and when no carbon black, etc. are contained in the composition for curing, transparent vulcanization product having satisfactory physical properties are obtainable.

Abstract: An A/D converter comprises an integrator circuit adapted to receive a first negative reference voltage at a first node and act as a voltage follower and adapted to integrate a second reference voltage with a capacitor at a second mode, the second reference voltage is more positive than the first reference voltage, a comparator for comparing an integrator output with a ground level and an analog input level at a second mode, and a counter for counting clock pulses when an integrator output is between the ground level and the analog input level.

Abstract: A method for producing a non-woven fabric which comprises bonding webs comprising a hydrophilic or hydrophobic non-shrinkable fiber and a heat-shrinkable fiber (e.g., a dry heat-shrinkable fiber and a wet heat-shrinkable fiber) partially or in a pattern with a binder, heating rapidly the bonded webs and thereby shrinking the webs to give a bulky and soft non-woven fabric having high water absorption properties; when the web comprises a predominant hydrophilic fiber and a wet heat-shrinkable fiber, the web is preferably subjected to a pre-wetting prior to the print bonding.