Abstract:
The present invention pertains to a foamable perfluoropolymer composition comprising : - at least one melt-processible per(halo)fluoropolymer [polymer (A)]; and - a blowing agent comprising an effective amount of magnesium carbonate; and - an active nucleating agent chosen among: at least one metal carbonate different from magnesium carbonate having decomposition temperature exceeding 3500°C, generally chosen among CaCO 3 , BaCO 3 , ZnCO 3 and PbCO 3 ; at least one talc derivative; and mixtures thereof. The composition of the invention can be chemically foamed yielding homogeneous foamed insulating structures which excel simultaneously in providing excellent insulating properties on metal wires or optical fibers, outstanding processing parameters for high speed cable manufacture and high performance ratings on flammability, smoke generation and fuel load. Advantageously, cables comprising said composition comply with flammability requirements according to NFPA-262 standard. Moreover, such compositions can be used for providing cables complying electric transmission requirements as per ANSI/TIA/EIA 568-B.2, Addendum 1, Category 6 or 6a.
Abstract:
The disclosure provides a composition or set of compositions and methods for producing cellular foamable, foamed, or blown perfluoropolymers or fluoropolymers and other thermoplastics to create products including a lower cost communications cable, conductor separator, conductor support-separator, jacketing, tape, wire insulation and in some cases a conduit tube as individual components or combined configurations that exhibit improved electrical, flammability and optical properties. The composition of the invention can be is chemically foamable yielding homogeneous foamed insulating structures which excel simultaneously in providing excellent insulating properties on metal wires or optical fibers, outstanding processing parameters for high speed cable manufacture and high performance ratings on flammability, smoke generation and fuel load. Specifically, the foamable perfluoropolymer cellular insulation composition comprises blending or individually utilizing; a selected perfluoropolymer in combination with magnesium carbonate, calcium carbonate and AClyn® wax; a second composition comprising the first composition and an additional selected one or more perfluoropolymers; a third composition comprising; talc and the selected one or more perfluoropolymers; a fourth composition comprising; the second composition, the third composition and the selected one or more perfluoropolymers. A single compounded pellet or product resulting in cellular foams obtained from melt processing the pellets has also been realized by providing the melt combination of only talc and a perfluoropolymer. The present invention includes a foamable perfluoropolymer composition comprising at least one melt-processible per(halo)fluoropolymer; and a blowing agent comprising an effective amount of magnesium carbonate; and an active nucleating agent chosen among: at least one metal carbonate different from magnesium carbonate having decomposition temperature exceeding 350°C, generally chosen among CaCO3, BaCO3, ZnCO3 and PbCO3; and talc and mixtures thereof.
Abstract:
The disclosure provides a composition or set of compositions and methods for producing cellular foamable, foamed, or blown perfluoropolymers or fluoropolymers and other thermoplastics to create products including a lower cost communications cable, conductor separator, conductor support-separator, jacketing, tape, wire insulation and in some cases a conduit tube as individual components or combined configurations that exhibit improved electrical, flammability and optical properties. The composition of the invention can be is chemically foamable yielding homogeneous foamed insulating structures which excel simultaneously in providing excellent insulating properties on metal wires or optical fibers, outstanding processing parameters for high speed cable manufacture and high performance ratings on flammability, smoke generation and fuel load. Specifically, the foamable perfluoropolymer cellular insulation composition comprises blending or individually utilizing; a selected perfluoropolymer in combination with magnesium carbonate, calcium carbonate and AClyn® wax; a second composition comprising the first composition and an additional selected one or more perfluoropolymers; a third composition comprising; talc and the selected one or more perfluoropolymers; a fourth composition comprising; the second composition, the third composition and the selected one or more perfluoropolymers. A single compounded pellet or product resulting in cellular foams obtained from melt processing the pellets has also been realized by providing the melt combination of only talc and a perfluoropolymer. The present invention includes a foamable perfluoropolymer composition comprising at least one melt-processible per(halo)fluoropolymer; and a blowing agent comprising an effective amount of magnesium carbonate; and an active nucleating agent chosen among: at least one metal carbonate different from magnesium carbonate having decomposition temperature exceeding 350°C, generally chosen among CaCO3, BaCO 3 , ZnCO 3 and PbCO 3 ; and talc and mixtures thereof.
Abstract:
The invention relates to the use of membranes formed from blends of a fluoropolymer matrix with polyelectrolytes and/or compatible hydrophilic polymers. The membranes are useful in water purification, and especially for purification of brackish and high saline content waters. The membranes can provide energy savings in a reverse osmosis (RO) system by requiring less back pressure. The membranes also offer a high degree of chemical resistance, including resistance to sodium hypochlorite, chlorine dioxide and hydrogen peroxide.
Abstract:
The disclosure provides a composition or set of compositions and methods for producing cellular foamable, foamed, or blown perfluoropolymers or fluoropolymers and other thermoplastics to create products including a lower cost communications cable, conductor separator, conductor support-separator, jacketing, tape, wire insulation and in some cases a conduit tube as individual components or combined configurations that exhibit improved electrical, flammability and optical properties. The composition of the invention can be is chemically foamable yielding homogeneous foamed insulating structures which excel simultaneously in providing excellent insulating properties on metal wires or optical fibers, outstanding processing parameters for high speed cable manufacture and high performance ratings on flammability, smoke generation and fuel load. Specifically, the foamable perfluoropolymer cellular insulation composition comprises blending or individually utilizing; a selected perfluoropolymer in combination with magnesium carbonate, calcium carbonate and AClyn® wax; a second composition comprising the first composition and an additional selected one or more perfluoropolymers; a third composition comprising; talc and the selected one or more perfluoropolymers; a fourth composition comprising; the second composition, the third composition and the selected one or more perfluoropolymers. A single compounded pellet or product resulting in cellular foams obtained from melt processing the pellets has also been realized by providing the melt combination of only talc and a perfluoropolymer. The present invention includes a foamable perfluoropolymer composition comprising at least one melt-processible per(halo)fluoropolymer; and a blowing agent comprising an effective amount of magnesium carbonate; and an active nucleating agent chosen among: at least one metal carbonate different from magnesium carbonate having decomposition temperature exceeding 350°C, generally chosen among CaCO3, BaCO3, ZnCO3 and PbCO3; and talc and mixtures thereof.
Abstract:
Embodiments of the invention include medical device elements formed from polymers with lubricious properties.In an embodiment, a method of forming a medical device element is included. The method can include mixing a first polymeric component and a second polymeric component to form a polymer mixture. The method can further include forming the polymer mixture into the medical device element. The method can also include treating the polymer mixture with at least one of an acid or a base. In an embodiment, a medical device is included. The medical device can include a lubricious element, the lubricious element comprising a mixture of a first polymeric component and a second polymeric component. The second polymeric component can include a polymer that is treated with at least one of an acid or a base after formation of the element. Other embodiments are also included herein.
Abstract:
The invention relates to the use of membranes formed from blends of a fluoropolymer matrix with polyelectrolytes and/or compatible hydrophilic polymers. The membranes are useful in water purification, and especially for purification of brackish and high saline content waters. The membranes can provide energy savings in a reverse osmosis (RO) system by requiring less back pressure. The membranes also offer a high degree of chemical resistance, including resistance to sodium hypochlorite, chlorine dioxide and hydrogen peroxide.
Abstract:
Die vorliegende Erfindung ist gerichtet auf eine Zusammensetzung enthaltend ein Siloxan der Formel (I), das mindestens einen Polyetherrest aufweist, der über eine Urethan-Bindung mit einem organischen Rest, vorzugsweise einem organischen Rest, der eine oder mehrere Isocyanat-Gruppen und/oder Polyurethanbindungen aufweist, verknüpft ist, und ein oder mehrere Verbindungen, die zwei oder mehr Isocyanatgruppen aufweisen, dadurch gekennzeichnet, dass die Zusammensetzung keine Polyole, die kein Silizium enthalten, oder deren Umsetzungsprodukte mit Isocyanaten aufweisen, auf Verwendung der Zusammensetzung zur Herstellung von Polyurethanen bzw. Polyrethanschäumen sowie auf entsprechend hergestellte Polyurethane und -schäume und deren Verwendung.