Abstract:
An article of manufacture comprising a dielectric material on a microelectronic device, such as an integrated circuit, wherein the dielectric material contains a poly(arylene ether) polymer comprising a repeat unit of the structure: ##STR1## wherein m=0 to 1.0; and n=1.0-m; and Ar.sub.1, Ar.sub.2, Ar.sub.3 and Ar.sub.4 are individually divalent arylene radicals, but Ar.sub.1, Ar.sub.2, Ar.sub.3 and Ar.sub.4, other than a diradical 9,9-diphenylfluorene, cannot be isomeric equivalents.
Abstract:
Polymers of at least two different alpha monoolefinic monomers capable of polymerizing with themselves and each other. The polymers comprise a plurality of polymer chains along which the proportion of mer units provided by a first such monomer for a given first chain length gradually increases as the proportion of mer units provided by a second such monomer along the first chain length gradually decreases to a second chain length along which the proportion of mer units provided by the first and second monomers, respectively, remain substantially constant throughout said second chain length. Also, included are polymers of this type wherein the polymer chains comprise a third chain length along which the proportion of mer units provided by the first monomer is greater than the minimum proportion of the same type of mer units in the given first chain length and remains substantially constant throughout the third chain length. In this case the third chain length is connected to one end of a fourth chain length which is connected at its other end to the given first chain length and the proportion of mer units provided by the first monomer gradually diminishes along the fourth chain length as the proportion of mer units provided by the second monomer gradually increases along the fourth chain length to the respective proportions of mer units provided by the first and second monomers at the beginning of the given first chain length at the point of attachment of the fourth chain length to the given first chain length.
Abstract:
A light emitting device includes: (a) a light emitting layer including an electroluminescent organic material dispersed in a matrix, wherein the matrix contains a non-electroluminescent organic polymer having a Tg of at least 170° C., and each of the organic polymer and the electroluminescent organic material constitutes at least 20 percent by weight of the light emitting layer; and (b) electrodes in electrical communication with the light emitting layer and configured to conduct an electric charge through the light emitting layer such that the light emitting layer emits light. A method for manufacturing a flexible organic light emitting device, includes providing the light emitting layer and providing electrodes above and below the light emitting layer, wherein the electrodes are in electrical communication with the light emitting layer.
Abstract:
Water-borne paints having an ASTM 60° gloss value of at least 10 are formulated with a latex of a copolymer of vinyl acetate and ethylene or alkyl acrylate having a dry glass transition temperature (Tg) below 20° C. and a latex of a polymer of vinyl acetate having a dry Tg above room temperature but a Tg when wet below 23° C. so that it is film-forming from the latex at room temperature. These paints are suitable for service as satin, semi-gloss or high gloss coatings but preferably are used as semi-gloss paints. The addition of the higher Tg polymer of vinyl acetate to the lower Tg copolymer provides a paint free with low to no volatile organic content but exhibiting improved blocking resistance without significant reduction in gloss.
Abstract:
Heterogeneous polymer mixtures comprising a polymer in liquid or supercritical CO.sub.2 are stabilized by employing a poly(propylene oxide) or poly(butylene oxide) based surfactant. These surfactants are especially well suited for stabilizing heterogeneous polymer mixtures formed by micronizing techniques as well as by precipitation of a compressed fluid antisolvent applications.
Abstract:
An aqueous blend comprising water, a first conjugated polymer having a conductivity of greater than 10−7 S/cm and a second conjugated polymer having a conductivity greater than 10−7 S/cm wherein the conductivities of the first conjugated polymer and the second conjugated polymer are measured using a four point probe method prior to preparing the aqueous blend. A film is also presented comprising a first conjugated polymer having a conductivity of greater than 10−7 S/cm and a second conjugated polymer having a conductivity greater than 10−7 S/cm formed by (a) depositing the recited aqueous blend onto an article and (b) removing the water-containing solution to form the film on the article.
Abstract:
A photovoltaic device having an anode, a cathode, and at least one photoactive layer between the anode and the cathode, wherein the at least one photoactive layer includes a composition containing a polymer having a glass transition temperature of at least 125° C.; and a photoactive material, wherein: (a) the photoactive material is a hole transporting organic material, an electron transporting organic material, and/or a light harvesting organic material, (b) the polymer and the photoactive material are in a single phase (c) the photoactive material constitutes at least 20% by weight of the composition, and (d) the at least one photoactive layer is in electrical communication with the anode and the cathode, the anode and the cathode are configured to conduct an electric charge from the at least one photoactive layer produced by the at least one photoactive layer absorbing light.
Abstract:
A light emitting device includes: (a) a light emitting layer including an electroluminescent organic material dispersed in a matrix, wherein the matrix contains a non-electroluminescent organic polymer having a Tg of at least 170° C., and each of the organic polymer and the electroluminescent organic material constitutes at least 20 percent by weight of the light emitting layer; and (b) electrodes in electrical communication with the light emitting layer and configured to conduct an electric charge through the light emitting layer such that the light emitting layer emits light. A method for manufacturing a flexible organic light emitting device, includes providing the light emitting layer and providing electrodes above and below the light emitting layer, wherein the electrodes are in electrical communication with the light emitting layer.
Abstract:
A process for producing a nanoporous polymer film of no greater than 10 micron thickness having low dielectric constant value, including the steps of: (a) providing a polymer in a solution with at least two solvents for the polymer in which a lowest boiling solvent and a highest boiling solvent have a difference in their respective boiling points of approximately 50° C. or greater; (b) forming a film of the polymer in solution with at least the two solvents on a substrate; (c) removing a predominant amount of the lowest boiling solvent; (d) contacting the film with a fluid which is a non-solvent for the polymer, but which is miscible with the at least two solvents to induce phase inversion in the film; (e) forming an average pore size in the film in the range of less than 30 nanometers. The present invention is also nanoporous films made by the above process.
Abstract:
Flexible epoxy resins are made by curing the epoxy with an amine curing agent in the presence of a low molecular weight acrylate copolymer made from a major amount of a lower aliphatic ester or amide of acrylic or methacrylic acid and a minor amount of an ethylenically unsaturated monomer having functionality reactive with functional groups present in the epoxy resin or its curing agent. The acrylate copolymer has a number average molecular weight in the range of 1000 to 6000, preferably 2000 to 3000, and a ratio of weight average to number average molecular weight in the range of 1 to 3.5. Copolymers of butylacrylate and acrylic acid or maleic anhydride are favored. Further advantages are realized by including in the cure formulation a monofunctional diluent reactive with the curative.