Abstract: The invention pertains to a dual cure fluoroelastomer composition including certain nitrile-containing fluoropolyether compounds, able to provide for cured parts having improved thermal and water vapour resistance, to a method of curing the same and to cured articles obtained therefrom.

Abstract: The invention pertains to a peroxide/nitrile dual cure fluoroelastomer composition able to provide for cured parts having improved thermal and water vapour resistance, to a method of curing the same and to cured articles obtained therefrom.

Abstract: The invention pertains to a method for manufacturing three-dimensional objects via an additive manufacturing system, using a fluorinated thermoplastic elastomer, delivering hence advantages over corresponding thermoplasts in throughput and part design accurate control, containment of degradation, reduction of fumes, and yet delivering parts with outstanding chemical and thermal resistance.

Abstract: The invention pertains to a dual cure fluoroelastomer composition including certain nitrile-containing fluoropolyether compounds, able to provide for cured parts having improved thermal and water vapour resistance, to a method of curing the same and to cured articles obtained therefrom.

Abstract: The invention pertains to a peroxide/nitrile dual cure fluoroelastomer composition able to provide for cured parts having improved thermal and water vapour resistance, to a method of curing the same and to cured articles obtained therefrom.

Abstract: The invention relates to a method for manufacturing a cross-linked polymer comprising reacting at least one polymer having at least one —SO2X group, with X being F or Cl, a basic compound, and certain salts including a ring-quaternized pyridinium-type nitrogen, and possessing at least two groups in ortho or para position thereto comprising reactive hydrogen atoms; cross-linking has been proven to proceed effectively, delivering cross-linked polymers possessing improved chemical resistance and mechanical performances.

Abstract: The invention pertains to a (per)fluoroelastomer composition comprising at least one (per)fluoroelastomer [(per)fluoroelastomer (A)] matrix comprising particles of at least one perfluoropolymer [polymer (F)] having a melt flow index (MFI), measured at 372° C. under a 5 Kg load according to ASTM D1238 standard, of less than 10 g/10 min, said particles having an average size of less than 100 nm.

Abstract: A peroxide curable perfluoroelastomer comprising: recurring units derived from tetrafluoroethylene (TFE); recurring units derived from perfluoroethylvinylether (EVE), in an amount of between 2 and 17% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE; and recurring units derived from perfluoromethylvinylether (MVE), in an amount of between 23 and 35% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE. A process for its manufacture and its use for the manufacture of cured articles.

Abstract: A peroxide curable perfluoroelastomer comprising: recurring units derived from tetrafluoroethylene (TFE); recurring units derived from perfluoroethylvinylether (EVE), in an amount of between 2 and 17% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE; and recurring units derived from perfluoromethylvinylether (MVE), in an amount of between 23 and 35% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE. A process for its manufacture and its use for the manufacture of cured articles.

Abstract: The invention pertains to a fluoroelastomer comprising recurring units derived from vinylidene fluoride (VDF), hexa fluoropropylene (HFP); and from 0.1 to 10% by moles of recurring units derived from hexafluoroisobutene (HFIB), wherein the mole percentages are based on the total moles of recurring units.

Abstract: A peroxide curable perfluoroelastomer comprising: recurring units derived from tetrafluoroethylene (TFE); and recurring units derived from perfluoromethylvinylether (MVE); such perfluoroelastomer possessing a Mooney Viscosity (ML2+9) at 121° C. of from 25 to 140 MU, when measured according to ASTM D1646 standard, and comprising such MVE recurring units in an amount of from 26 to 33% by moles with respect to total moles of TFE and MVE. A process for the manufacture of such perfluoroelastomer, and cured articles obtainable therefrom.

Abstract: This invention pertains to sealing articles of vulcanized (per)fluoroelastomer compositions incorporating particles of a vinylidene fluoride (VDF) polymers having a Shore A hardness of at least 85 when determined according to ASTM D 2240 Type A Durometer method, and a compression set of less than 30%, when determined according to ASTM D395 at 200° C. for 70 h on O-ring according to ASTM D1414, and to a process for their manufacture by vulcanizing-molding and thermal post-treating at a temperature above the melting point of the VDF polymer.

Abstract: Extrudable (per)fluoroelastomer compositions comprising crosslinkable (per)fluoroelastomers having: at least two glass transition temperatures Tg on DSC analysis, at least one melting peak on DSC analysis with a ?H of second melting of between 0.3 and 5.5 J/g, and a bimodal molecular weight distribution such that the ratio Mn1/Mn2 is between 10 and 30, wherein Mn1 represents the number-average molecular weight of the distribution of the high molecular weight fluoroelastomer and Mn2 represents the number-average molecular weight of the distribution of the low molecular weight fluoroelastomer.

Abstract: Vulcanizable fluoroelastomer compositions comprising: A) a fluoroelastomer matrix based on vinylidene fluoride (VDF) with a Mooney viscosity (1+10) at 121° C. of less than 35 MU (Mooney Units) measured according to ASTM standard D 1646; and B) a semi-crystalline fluoropolymer, in an amount of from 20% to 70% by weight relative to the total weight of A)+B), the semi-crystalline fluoropolymer being constituted of tetrafluoroethylene (TFE) homopolymers and copolymers of TFE with one or more monomers containing at least one unsaturation of ethylenic type, in an amount of from 0.01 to 10 mol %, said semi-crystalline fluoropolymer having a mean particle size between 10 and 400 nm.

Abstract: A peroxide curable perfluoroelastomer comprising: recurring units derived from tetrafluoroethylene (TFE); recurring units derived from perfluoroethylvinylether (EVE), in an amount of between 2 and 17% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE; and recurring units derived from perfluoromethylvinylether (MVE), in an amount of between 23 and 35% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE. A process for its manufacture and its use for the manufacture of cured articles.

Abstract: A peroxide curable perfluoroelastomer comprising: recurring units derived from tetrafluoroethylene (TFE); and recurring units derived from perfluoromethylvinylether (MVE); such perfluoroelastomer possessing a Mooney Viscosity (ML2+9) at 121° C. of from 25 to 140 MU, when measured according to ASTM D1646 standard, and comprising such MVE recurring units in an amount of from 26 to 33% by moles with respect to total moles of TFE and MVE. A process for the manufacture of such perfluoroelastomer, and cured articles obtainable therefrom.

Abstract: Extrudable (per)fluoroelastomer compositions comprising crosslinkable (per)fluoroelastomers having: at least two glass transition temperatures Tg on DSC analysis, at least one melting peak on DSC analysis with a ?H of second melting of between 0.3 and 5.5 J/g, and a bimodal molecular weight distribution such that the ratio Mn1/Mn2 is between 10 and 30, wherein Mn1 represents the number-average molecular weight of the distribution of the high molecular weight fluoroelastomer and Mn2 represents the number-average molecular weight of the distribution of the low molecular weight fluoroelastomer.

Abstract: The invention pertains to a (per)fluoroelastomer composition comprising at least one (per)fluoroelastomer [(per)fluoroelastomer (A)] matrix comprising particles of at least one perfluoropolymer [polymer (F)] having a melt flow index (MFI), measured at 372° C. under a 5 Kg load according to ASTM D1238 standard, of less than 10 g/10 min, said particles having an average size of less than 100 nm.

Abstract: This invention pertains to sealing articles of vulcanized (per)fluoroelastomer compositions incorporating particles of a vinylidene fluoride (VDF) polymers having a Shore A hardness of at least 85 when determined according to ASTM D 2240 Type A Durometer method, and a compression set of less than 30%, when determined according to ASTM D395 at 200° C. for 70 h on O-ring according to ASTM D1414, and to a process for their manufacture by vulcanizing-molding and thermal post-treating at a temperature above the melting point of the VDF polymer.

Abstract: The invention pertains to a multi-phase thermoplastic fluoropolymer composition, comprising a thermoplastic fluoropolymer and discrete domains of melt-processable perfluoropolymer, to the articles therefrom and to a process for manufacturing thermoplastic fluoropolymer compositions. The multi-phase thermoplastic fluoropolymer composition comprises: —at least one thermoplastic fluoropolymer (A); and —from 0.1 to 10% by weight of (A) of at least one melt-processible perfluoropolymer (B), and is characterized in that the polymer (B) is present in the composition in phase-separated domains in a continuous phase mainly comprising (A), at least 75% by volume of said domains having maximal dimension not exceeding 1 ?m. The process of the invention comprises mixing: (i) a thermoplastic fluoropolymer (A); (ii) a melt-processible perfluoropolymer (B) under the form of particles having an average primary particle size not exceeding 300 nm; (iii) and optionally other additives or filling materials.