The present disclosure relates generally to flame retarding building materials and methods for making them. More particularly, the present disclosure relates to flame retarding building materials that have both flame retardant character and desirable water vapor permeability values. In one embodiment, the disclosure provides a flame retardant vapor retarding membranes comprising: a building material substrate sheet having a melt viscosity of about 1 Pa.Math.s to about 100,000 Pa.Math.s at about 300 C. at 1 rad/s; and a polymeric coating layer disposed on the building material substrate layer, wherein the coating layer has a melt viscosity of about 1 Pa.Math.s to about 100,000 Pa.Math.s at about 300 C. at 1 rad/s.

Materials with uniform electrostatic surface charge for antimicrobial pathogen inactivation meanwhile preserving safety (non-cytotoxicity) for personal and personnel use and methods for manufacturing such antimicrobial materials and uses thereof.

Disclosed herein is a medical implant component comprising a composite biotextile, which biotextile comprises i) a polyolefin fibrous construct comprising at least one strand with titer of 2-250 dtex, tensile strength of at least 10 cN/dtex and comprising high molar mass polyolefin fibers and ii) a coating comprising a biocompatible and biostable polyurethane elastomer comprising a polysiloxane segment and/or having one or more hydrophobic endgroups, wherein the polyurethane coating is present on at least part of the surface of the biotextile and in an amount of 2.5-90 mass % based on composite biotextile. Such composite biotextile, like a partly coated woven fabric, shows an advantageous combination of good biocompatibility, especially hemocompatibility, high strength and pliability, and laser cuttability; allowing to make pieces of fabric having well-defined regular edges that have high suture retention strength. The invention also provides a method of making said composite biotextile. Further embodiments concern the use of such biotextile in or as medical implant component for an implantable medical device and the use of such medical implant component in making an implantable medical device; such as in orthopedic applications and cardiovascular implants. Other embodiments include such medical devices or implants comprising said medical implant component.

Disclosed herein is a method of making a composite fabric for use in or as a medical implant component, the method comprising steps of providing a textile comprising at least one strand having titer of 2-250 dtex and comprising fibers made from a biocompatible and biostable synthetic polymer; determining locations on the textile where a cut is to be made for an intended use of the textile; optionally pretreating the textile at least at the determined locations on at least one side of the textile with a high-energy source to activate the surface; solution coating the textile at least at a determined location with a coating composition comprising a biocompatible and biostable polyurethane elastomer and a solvent for the polyurethane; removing the solvent from the coated textile; and laser cutting the coated textile as obtained at least a one coated location with an ultra-short pulse laser; to result in a composite biotextile wherein polyurethane is present in an amount of 2.5-90 mass % based on composite biotextile and polyurethane is present at least at a laser-cut edge. Such composite biotextile as made shows an advantageous combination of good biocompatibility, especially hemocompatibility, high strength and pliability, and has well-defined regular edges that have high suture retention strength. Further embodiments concern the use of such composite biotextile in or as medical implant component for an implantable medical device; such as in orthopedic applications and cardiovascular implants. Other embodiments include such medical devices or implants comprising said composite biotextile or medical implant component.

The disclosure provides a fabric structure, which includes a base fabric and a coating layer. The base fabric is woven from multiple yarns. Each of the yarns is composed of a fiber. The coating layer is disposed on the base fabric. The fiber and the coating layer do not include polyvinyl chloride. A manufacturing method of the fabric structure is also provided.

An ABA triblock polymer including an A block and a B block, in which the A block is a random polymer including a constituent unit derived from a reactive group-containing polymerizable monomer and a constituent unit derived from a hydrophobic group-containing polymerizable monomer, and the B block contains a divalent organopolysiloxane residue in a main chain, as well as applications thereof.

A composite material, and a process for its manufacture is described. A film of polypropylene is layered over a textile core of isotactic polypropylene fibers and is fused to thereto by entangled polypropylene interposed between the textile core and the film so as to inhibit stretching of the textile core. The process includes positioning a film of polypropylene over a textile core of isotactic polypropylene fibers, and applying heat under pressure to the film so as to raise a film temperature above a melting point of the film while preventing melting of a crystalline component of the textile core to fuse the film to the textile core by causing entanglement of polypropylene of the textile core with polypropylene of the film so as to inhibit stretching of the textile core. The composite material is used for sailcloth.

Methods of making a composite fabric for use in or as a medical implant component are disclosed whereby the method includes the steps of providing a textile comprising at least one strand having titer of 2-250 dtex and comprising fibers made from a biocompatible and biostable synthetic polymer; determining locations on the textile where a cut is to be made for an intended use of the textile; optionally pretreating the textile at least at the determined locations on at least one side of the textile with a high-energy source to activate the surface; solution coating the textile at least at a determined location with a coating composition comprising a biocompatible and biostable polyurethane elastomer and a solvent for the polyurethane; removing the solvent from the coated textile; and laser cutting the coated textile as obtained at least a one coated location with an ultra-short pulse laser; to result in a composite biotextile wherein polyurethane is present in an amount of 2.5-90 mass % based on composite biotextile and polyurethane is present at least at a laser-cut edge.

The invention provides a flame retardant material comprising a substrate, an optionally corona-treated coating on the substrate, the coating comprising a polyolefin composition comprising a) an ethylene based plastomer with a density in the range of 0.857 to 0.915 g/cm.sup.3 and an MFR.sub.2 in the range 0.5-30 g/10 min; b) a propylene based plastomer with a density in the range of 0.860 to 0.910 g/cm.sup.3 and an MFR.sub.2 in the range 0.01-30 g/10 min; and c) a flame retardant, a primer layer on top of the coating and a lacquer topcoat.

A microporous laminate comprising a microporous polymeric surface coating comprising polypropylene copolymer on a nonwoven substrate, the microporous polymeric surface coating having a matrix phase of polypropylene homopolymer chain segments and a plurality of domains of ethylene-containing copolymer chain segments within said matrix phase, the domains of the ethylene-containing copolymer chain segments further comprising an inclusion phase of said polypropylene homopolymer chain segments, wherein the domains of said ethylene-containing copolymer chain segments are fractured to form micropores in the microporous polymeric surface coating, wherein (a) the microporous polymeric surface coating has an average thickness of 0.4 to 3.9 mils (10 to 100 micrometers) and the microporous laminate has a trapezoid tear of 40 to 225 Newtons (9 to 50 lbs-force); or (b) the microporous polymeric surface coating has an average thickness of 0.5 to 3.0 mils (12.7 to 76.2 micrometers) and the microporous laminate has a Gurley air permeability of 20 to 150 seconds/100 cm.sup.3 of air.