Abstract: The present invention provides fluoropolymer laminates having isotropic properties. For example, an embodiment in which multiple fluoropolymer sheets having a liquid crystalline polymer oriented in the fibrous state in the melt processible fluoropolymer are laminated, despite having the fibrous LCP oriented in one direction in each single extruded sheet, makes it possible to laminate in such a way as to compensate for their orientation directions, the laminate thereby becoming isotropic as regards physical properties. The laminates also have low linear coefficient of expansion and low thermal shrinkage as well as elevated tensile modulus and low dielectric constant.

Abstract: The present invention provides fluoropolymer laminates having isotropic properties. For example, an embodiment in which multiple fluoropolymer sheets having an liquid crystalline polymer oriented in the fibrous state in the melt processible fluoropolymer are laminated, despite having the fibrous LCP oriented in one direction in each single extruded sheet, makes it possible to laminate in such a way as to compensate for their orientation directions, the laminate thereby becoming isotropic as regards physical properties. The laminates also have low linear coefficient of expansion and low thermal shrinkage as well as elevated tensile modulus and low dielectric constant.

Abstract: The present invention provides fluoropolymer laminates having isotropic properties. For example, an embodiment in which multiple fluoropolymer sheets having an liquid crystalline polymer oriented in the fibrous state in the melt processible fluoropolymer are laminated, despite having the fibrous LCP oriented in one direction in each single extruded sheet, makes it possible to laminate in such a way as to compensate for their orientation directions, the laminate thereby becoming isotropic as regards physical properties. The laminates also have low linear coefficient of expansion and low thermal shrinkage as well as elevated tensile modulus and low-dielectric constant.

Abstract: The present invention provides fluoropolymer laminates having isotropic properties. For example, an embodiment in which multiple fluoropolymer sheets having an liquid crystalline polymer oriented in the fibrous state in the melt processible fluoropolymer are laminated, despite having the fibrous LCP oriented in one direction in each single extruded sheet, makes it possible to laminate in such a way as to compensate for their orientation directions, the laminate thereby becoming isotropic as regards physical properties. The laminates also have low linear coefficient of expansion and low thermal shrinkage as well as elevated tensile modulus and low dielectric constant.

Abstract: The present invention provides fluoropolymer laminates having isotropic properties. For example, an embodiment in which multiple fluoropolymer sheets having an liquid crystalline polymer oriented in the fibrous state in the melt processible fluoropolymer are laminated, despite having the fibrous LCP oriented in one direction in each single extruded sheet, makes it possible to laminate in such a way as to compensate for their orientation directions, the laminate thereby becoming isotropic as regards physical properties. The laminates also have low linear coefficient of expansion and low thermal shrinkage as well as elevated tensile modulus and low dielectric constant.

Abstract: A method for producing an electrically conducting melt-processible fluoropolymer comprising pulverizing a composition of (a) carbon aggregate and (b) coagulum particles of aqueous dispersion polymerized melt-processible fluoropolymer, coating the coagulum particle with the disintegrated particles of carbon black. The preferred composition comprises a structured carbon black such as acetylene black and a melt processible fluoropolymer wherein said melt processible fluoropolymer has two crystallization peaks in a DSC cooling curve when allowed to crystallize from a temperature of not less than its melting point at a cooling rate of 12° C./min; and the ratio of the crystallization peak heights (high temperature side peak/low temperature side peak) is 0.65 or greater; and/or the ratio of the high temperature side crystallization peak area to the total area of the crystallization peaks [high temperature side peak area/(high temperature side peak area+low temperature side peak area)] is 0.

Abstract: Blends of 3 to 97 parts by weight of tetrafluoroethylene/hexafluoropropylene copolymer containing 3 to 9 wt % hexafluoropropylene and 0 to 4 wt % of tetrafluoroethylene/perfluoro(ethyl vinyl ether) or tetrafluoroethylene/perfluoro(methyl vinyl ether), with 97 to 3 parts by weight tetrafluoroethylene/perfluoro(ethyl vinyl ether) or tetrafluoroethylene/perfluoro(methyl vinyl ether), which co-crystallize are found to have improved melt strength and improved mechanical properties, and a higher service temperature than the tetrafluoroethylene/hexafluoropropylene copolymer.

Abstract: A method for producing an electrically conducting a melt-processible fluoropolymer comprising pulverizing a composition of (a) carbon aggregate and (b) coagulum particles of aqueous dispersion polymerized melt-processible fluoropolymer, the pulverizing of said composition causing the disintegration of the aggregates and the coating of the coagulum particle with the disintegrated particles of carbon black, to obtain a uniform mixture of the carbon black in the fluoropolymer. The preferred composition comprises a structured carbon black such as acetylene black and a melt processible fluoropolymer wherein said melt processible fluoropolymer has two crystallization peaks in a DSC instrument when allowed to crystallize from a temperature of not less than its melting point at a cooling rate of 12° C./min; and the ratio of the crystallization peak heights (high temperature side peak/low temperature side peak) is 0.

Abstract: A method for producing a melt-processible fluoropolymer comprising pulverizing a composition of (a) carbon aggregate and (b) coagulum particles of aqueous dispersion polymerized melt-processible fluoropolymer, the pulverizing of said composition causing the disintegration of the aggregates and the coating of the coagulum particle with the disintegrated particles of carbon black, to obtain a uniform mixture of the carbon black in the fluoropolymer.

Abstract: Blends of 3 to 97 parts by weight of tetrafluoroethylene/hexafluoropropylene copolymer containing 3 to 9 wt % hexafluoropropylene and 0 to 4 wt % of tetrafluoroethylene/perfluoro(ethyl vinyl ether) or tetrafluoroethylene/perfluoro(methyl vinyl ether), with 97 to 3 parts by weight tetrafluoroethylene/perfluoro(ethyl vinyl ether) or tetrafluoroethylene/perfluoro(methyl vinyl ether), which co-crystallize are found to have improved melt strength and improved mechanical properties, and a higher service temperature than the tetrafluoroethylene/hexafluoropropylene copolymer.

Abstract: A fluoropolymer article containing functionalized fluoropolymer is reinforced with fibrous liquid-crystal polymer.

Abstract: A melt processible fluoropolymer composition comprising a copolymer of tetrafluoroethylene with a perfluoro(alkyl vinyl ether), which copolymer is a mixture of a first fluorocarbon resin copolymer in which the alkyl group of the perfluoro(alkyl vinyl ether) has at least 3 carbons, and a second fluorocarbon resin copolymer in which the alkyl group of the perfluoro(alkyl vinyl ether) has 1 and/or 2 carbons, and the components of the blend are miscible in the amorphous regions and sometimes in the crystalling regions.

Abstract: A melt processible fluoropolymer composition comprising a copolymer of tetrafluoroethylene with a perfluoro(alkyl vinyl ether), which copolymer is a mixture of a first fluorocarbon resin copolymer in which the alkyl group of the perfluoro(alkyl vinyl ether) has at least 3 carbons, and a second fluorocarbon resin copolymer in which the alkyl group of the perfluoro(alkyl vinyl ether) has 1 and/or 2 carbons, and the components of the blend are miscible in the amorphous regions and sometimes in the crystalling regions.

Abstract: A fluoropolymer article containing functionalized fluoropolymer is reinforced with fibrous liquid-crystal polymer.