Abstract: The present disclosure is directed to a wire wrap composition having a polyimide layer and a bonding layer. The polyimide layer is composed of a polyimide and a sub-micron filler. The polyimide is derived from at least one aromatic dianhydride component selected from rigid rod dianhydride, non-rigid rod dianhydride and combinations thereof, and at least one aromatic diamine component selected from rigid rod diamine, non-rigid rod diamine and combinations thereof. The mole ratio of dianhydride to diamine is 48-52:52-48 and the ratio of X:Y is 20-80:80-20 where X is the mole percent of rigid rod dianhydride and rigid rod diamine, and Y is the mole percent of non-rigid rod dianhydride and non-rigid rod diamine. The sub-micron filler is less than 550 nanometers in at least one dimension; has an aspect ratio greater than 3:1; is less than the thickness of the film in all dimensions.

Abstract: The present invention relates to a process for increasing an ion exchange membrane's resistance to peroxide radical attack in a fuel cell environment comprising the use of catalytically active components capable of decomposing hydrogen peroxide as well as a method for preparing a catalytically active component for use therein. Thus, a process has been developed for reducing or preventing proton exchange membrane degradation due to its interaction with hydrogen peroxide, where the catalytically active components serve as hydrogen peroxide scavengers to protect the PEM from chemical reaction with hydrogen peroxide by decomposing the hydrogen peroxide to H2O and O2 rather than the radicals that degrade the PEM.

Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Particularly disclosed is a process for chemically planarizing the surface of a mica composite. Articles comprising the mica paper composite are also disclosed.

Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.

Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.

Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.

Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.

Abstract: The films of the present disclosure have a thickness from about 8 to about 150 microns and contain from about 40 to about 95 weight percent of a polyimide derived from: i. at least one aromatic dianhydride, at least about 85 mole percent of such aromatic dianhydride being a rigid rod type monomer, and ii. at least one aromatic diamine, at least about 85 mole percent of such aromatic diamine being a rigid rod type monomer. The films of the present disclosure further comprise a filler that: i. is less than about 800 nanometers in at least one dimension; ii. has an aspect ratio greater than about 3:1; iii. is less than the thickness of the film in all dimensions; and iv. is present in an amount from about 5 to about 60 weight percent of the total weight of the film.

Abstract: Compositions containing multifunctional nanoparticles are provided. The compositions are the reaction product of fluoroelastomer having at least one cure site, and the reaction product of nanosilica with more than one type of silane coupling agent. The compositions can be used to form abrasion resistant anti-reflective coatings.

Abstract: Hydrotalcite/metal carbonate combinations are partially or fully thermally decomposed to provide catalysts useful for the conversion of ethanol and hydrogen to a reaction product comprising 1-butanol.

Abstract: Hydrotalcites containing the anion of ethylenediaminetetraacetic acid are partially or fully thermally decomposed to provide catalysts useful for the conversion of ethanol and hydrogen to a reaction product comprising 1-butanol.

Abstract: Disclosed herein are pigments comprising mostly rutile TiO2, wherein the mostly rutile TiO2 consists essentially of low abrasion TiO2 particles produced by introducing a metal halide into the chloride process. Further disclosed are ink, can coatings, fibers, papers, and plastics comprising the pigment. Also disclosed herein are pigments comprising the low abrasion TiO2 pigments comprising TiO2 particles which have been further heat treated at a temperature of at least about 800° C. in an oxidizing atmosphere for a time period of at least about 1 hour.

Abstract: Noble metal catalysts and methods for producing the catalysts are provided. The catalysts are useful in applications such as fuel cells. The catalysts exhibit reduced agglomeration of catalyst particles as compared to conventional noble metal catalysts.

Abstract: The assemblies of the present disclosure comprise an electrode, and a polyimide film. The polyimide film contains from about 40 to about 95 weight percent of a polyimide derived from at least one aromatic dianhydride component, and at least one aromatic diamine component. The aromatic dianhydride and aromatic diamine component are selected from the group consisting of rigid rod diamine, non-rigid rod diamine and combinations thereof. The mole ratio of dianhydride to diamine is 48-52:52-48 and the ratio of A:B is 20-80:80-20. A is the mole percent of rigid rod dianhydride and rigid rod diamine, and B is the mole percent of non-rigid rod dianhydride and non-rigid rod diamine. The polyimide films of the present disclosure further comprise a filler that is less than about 100 nanometers in all dimensions and is present in an amount from about 5 to about 60 weight percent of the total weight of the polyimide film.

Abstract: The assemblies of the present invention comprise an electrode, an light absorber layer and a polyimide film. The polyimide film contains from about 40 to about 95 weight percent of a polyimide derived from: i. at least one aromatic dianhydride, at least about 85 mole percent of such aromatic dianhydride being a rigid rod type dianhydride, and ii. at least one aromatic diamine, at least about 85 mole percent of such aromatic diamine being a rigid rod type diamine. The polyimide films of the present disclosure further comprise a filler that: i. is less than about 100 nanometers in all dimensions; and ii. is present in an amount from about 5 to about 60 weight percent of the total weight of the polyimide film.

Abstract: Noble metal catalysts and methods for producing the catalysts are provided. The catalysts are useful in applications such as fuel cells. The catalysts exhibit reduced agglomeration of catalyst particles as compared to conventional noble metal catalysts.

Abstract: An interposer film for IC packaging is disclosed. The interposer film comprises a substrate that supports a plurality of electrically conductive domains. The substrate contains a rigid rod type polyimide and about 5-60 wt % filler. The filler has at least one dimension that (on average) is less than about 800 nanometers, and the filler also has an average aspect ratio greater than about 3:1.

Abstract: A film is disclosed, containing 40-100 weight percent polyimide. The polyimide is derived from a dianhydride component and a diamine component. The dianhydride component is at least 3,3?,4,4?-biphenyl tetracarboxylic dianhydride (BPDA), and optionally is also pyromellitic dianhydride (PMDA) in a mole ratio of 50-100:50-0 (BPDA:PMDA). The diamine component comprises 1,5-naphthalenediamine (1,5-ND) and 1,4-diaminobenzene (PPD) and/or meta phenylene diamine (MPD) in a mole ratio of 15-95:85-5 (1,5-ND:PPD+MPD). The films have exceptional high temperature storage modulus (elastic modulus) and exceptionally low high temperature creep (eplast).

Abstract: A process for forming at least one photovoltaic component on a substrate is described. The substrate comprises a polyimide and a sub-micron filler. The polyimide is derived substantially or wholly from rigid rod monomers and the sub-micron filler has an aspect ratio of at least 3:1. The substrates of the present disclosure are particularly well suited for photovoltaic applications, due at least in part to high resistance to hygroscopic expansion and relatively high levels of thermal and dimensional stability.

Abstract: The assemblies of the present invention comprise an electrode, an absorber layer and a polyimide film. The polyimide film contains from about 40 to about 95 weight percent of a polyimide derived from: i. at least one aromatic dianhydride, at least about 85 mole percent of such aromatic dianhydride being a rigid rod type dianhydride, and ii. at least one aromatic diamine, at least about 85 mole percent of such aromatic diamine being a rigid rod type diamine. The polyimide films of the present disclosure further comprise a filler that: i. is less than about 800 nanometers in at least one dimension; ii. has an aspect ratio greater than about 3:1 ; iii. is less than the thickness of the polyimide film in all dimensions; and iv. is present in an amount from about 5 to about 60 weight percent of the total weight of the polyimide film.