An intravascular device configured to treat an aneurysm that includes a support structure including metal struts configured to be positioned in a body lumen and defining a central fluid passage that extends axially along the support structure, and a knitted mesh cover disposed over an exterior thereof and across a radial arc and along a length of the support structure sufficient to exceed an opening of an aneurysm to be treated, and the cover includes a polymer fiber having a diameter of at least 40 nanometers to 30 microns and apertures therethrough, the apertures being sized to prevent blood from passing through the device to prevent further expansion of the aneurysm. Devices including apertures that are at least 20 microns and sized to minimize or prevent an aneurysm-filling material from exiting the aneurysm through the knitted mesh cover and support structure, and methods of stenting, are also encompassed.

An intravascular device configured to treat an aneurysm that includes a support structure including metal struts configured to be positioned in a body lumen and defining a central fluid passage that extends axially along the support structure, and a knitted mesh cover disposed over an exterior thereof and across a radial arc and along a length of the support structure sufficient to exceed an opening of an aneurysm to be treated, and the cover includes a polymer fiber having a diameter of at least 40 nanometers to 30 microns and apertures therethrough, the apertures being sized to prevent blood from passing through the device to prevent further expansion of the aneurysm. Devices including apertures that are at least 20 microns and sized to minimize or prevent an aneurysm-filling material from exiting the aneurysm through the knitted mesh cover and support structure, and methods of stenting, are also encompassed.

The present disclosure relates to a polyamide comprising at least one repeating unit of formula I: [OCArOP(=0)(Ar)OArCONHRNH] Formula (I) wherein, Ar is independently selected from the group consisting of aryl, arylene, heteroaryl and carbocyclic group; R represents a covalent bond or a divalent hydrocarbon-based group selected from the group consisting of saturated or unsaturated aliphatics, saturated or unsaturated cycloaliphatics, aromatics, arylaliphatics, and alkylaromatics.

The present disclosure relates to a polyamide comprising at least one repeating unit of formula I: [OCArOP(=0)(Ar)OArCONHRNH] Formula (I) wherein, Ar is independently selected from the group consisting of aryl, arylene, heteroaryl and carbocyclic group; R represents a covalent bond or a divalent hydrocarbon-based group selected from the group consisting of saturated or unsaturated aliphatics, saturated or unsaturated cycloaliphatics, aromatics, arylaliphatics, and alkylaromatics.

The invention pertains generally to a polymer composition comprising a certain secondary anti-oxidant, that can also act as a polymer processing aid alone or in combination with another polymer processing aid.

The invention pertains generally to a polymer composition comprising a certain secondary anti-oxidant, that can also act as a polymer processing aid alone or in combination with another polymer processing aid.

A capped poly(arylene ether) copolymer having the formula

##STR00001##

wherein Y is a divalent linking group of the formula

##STR00002## each occurrence of D is independently a group of the formula

##STR00003## each occurrence of Z is independently of the formula

##STR00004##

and Q.sup.1a, Q.sup.1b, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, z, x, y, e, R.sup.a, R.sup.b, R.sup.c, R.sup.d, R.sup.e, W.sup.a, R, R, and m are as defined herein.

A method of obtaining modified phthalonitriles comprising organophosphorus fragments, binding agents based thereon, and products produced with the use thereof, can be used in a variety of fieldsfrom aircraft and automobile manufacturing to producing polymer composite materials. The method makes it possible to produce phthalonitrile monomers comprising organophosphorus fragments from simpler and cheaper reagents and to obtain them as individual substances, simplifying the process of synthesis, reducing the glass transition temperature of monomers and increasing the thermal oxidation stability of hardened polymers. The phthalonitrile monomer modified with organophosphorus fragments is characterized by the following general formula:

##STR00001##

wherein R is a radical selected from the group comprising aryl, alkyl, aryloxy or alkyloxy substituents; and X is a divalent aryl substituent selected from a group comprising phenylenes and naphthylenes. Also disclosed is a method of obtaining the modified phthalonitrile monomer, a binder, and a prepreg based on the same.

A method of obtaining modified phthalonitriles comprising organophosphorus fragments, binding agents based thereon, and products produced with the use thereof, can be used in a variety of fieldsfrom aircraft and automobile manufacturing to producing polymer composite materials. The method makes it possible to produce phthalonitrile monomers comprising organophosphorus fragments from simpler and cheaper reagents and to obtain them as individual substances, simplifying the process of synthesis, reducing the glass transition temperature of monomers and increasing the thermal oxidation stability of hardened polymers. The phthalonitrile monomer modified with organophosphorus fragments is characterized by the following general formula:

##STR00001##

wherein R is a radical selected from the group comprising aryl, alkyl, aryloxy or alkyloxy substituents; and X is a divalent aryl substituent selected from a group comprising phenylenes and naphthylenes. Also disclosed is a method of obtaining the modified phthalonitrile monomer, a binder, and a prepreg based on the same.

A flame retardant lysine-based derivative, a process for forming a flame retardant lysine-based derivative, and an article of manufacture comprising a flame retardant lysine-based derivative are disclosed. The flame retardant lysine-derived molecule can be synthesized from a bio-based source, and can have at least one phosphoryl or phosphonyl moiety. A flame retardant proline-based derivative, a process for forming a flame retardant proline-based derivative, and an article of manufacture comprising a flame retardant proline-based derivative are also disclosed. The flame retardant proline-derived molecule can be synthesized from a bio-based source and can have at least one phosphoryl or phosphonyl moiety.