Abstract:
A film comprises a phthalimidine copolycarbonate comprising first repeating units and second repeating units different from the first repeating units, wherein the first repeating units are phthalimidine carbonate units; and the second repeating units comprise bisphenol carbonate units that are not the same as the first repeating phthalimidine carbonate units; and a second polycarbonate that is not a phthalimidine copolycarbonate; wherein the film has: a glass transmission temperature of greater than 170°C; a dielectric constant at 1 kHz, 23°C and 50% relative humidity of at least 3.0; a dissipation factor at 1 kHz, 23°C and 50% relative humidity of 1% or less; and a breakdown strength of at least 800 Volt/micrometer.
Abstract:
Antimicrobial or antiseptic polymers may be produced by incorporation of an antimicrobial ingredient into the polymer by grafting, copolymerization, or via a combined antimicrobial/plasticizer ingredient. The polymer may be produced as a masterbatch, or a ready to process polymer for producing antimicrobial products. The reactions may be conducted in a reactive extruder to provide a single-step synthesis.
Abstract:
A significant disadvantage of the use of polylactic acid (PLA), lack of flame retardance, has been overcome by the use of specific combinations of either polycarbonate or polyphosphonate-co-carbonate in combination with non-halogenated flame retardants of polyphosphazene or phosphate ester such as resorcinol bis (diphenyl phosphate) or metal hypophosphite, a drip suppressant, and optionally an inorganic synergist of either zinc borate or talc or both and optionally other ingredients. The compound achieves a UL 94 rating of V-0 or V-1 at 1.6 mm.
Abstract:
An embodiment relates to an article and a method for producing an article including a plurality of substrates, and an adhesive bonded between at least two of the plurality of substrates. The adhesive can include a polycarbonate copolymer that includes reacted resorcinol, siloxane, and bisphenol-A. Another embodiment relates to an article having a first polyimide substrate, a second polyimide substrate, and an adhesive bonded between the first substrate and the second substrate. The article can have a 2 minute integrated heat release rate of less than or equal to 65 kilowatt-minutes per square meter (kW-min/m2) and a peak heat release rate of less than 65 kilowatts per square meter (kW/m2) as measured using the method of FAR F25.4, in accordance with Federal Aviation Regulation FAR 25.853(d).
Abstract:
The invention relates to novel methods for producing isocyanate-free synthetic materials, such as plastics, polymers and/or modified polyurethanes, comprising melt extrusion processing of combinations of thermoplastic polyurethane and nanoclays.
Abstract:
Disclosed is a microporous composite film having a coating layer formed on at least one surface of a microporous polyolefin film, wherein the coating layer simultaneously includes a high thermostable polymer resin and inorganic particles. More specifically, the present invention relates to a microporous composite film in which an area shrinkage at 170°C for 1hr is 10% or less; a tensile modulus in each of a machine direction and a transverse direction at 130°C is 0.5MPa to 7.0MPa; a ratio between permeability of a microporous composite film (CCS P ) and permeability of a microporous polyolefin film (S p ) is 1.1 ≤ CCS p /S p ≤ 3.5; and a permeability of the microporous composite film is 450sec or less.
Abstract:
La présente invention concerne un matériau composite comprenant, dans une composition polymérique, des nanotubes de carbone associés à des particules ayant un coeur en élastomère et au moins une écorce thermoplastique. Elle concerne également un procédé de préparation de ce matériau, ainsi que son utilisation pour conférer différentes propriétés à des matrices polymériques.