Abstract:
Described herein are laminates formed from a layer of a polyarylate sheet and a layer of an aromatic polycarbonate, a polyester, or mixtures of these resin sheets. These laminates are suitable for use in glazing applications.
Abstract:
Thermoplastic, injection moldable composites comprising at least one poly(aryl ether ketone) having silicon carbide whiskers dispersed therein exhibit excellent tensile properties coupled with high elongation relative to poly(aryl ether ketone) composites with other inorganic fibers. The composites are useful for making articles such as electrical connectors.
Abstract:
A moldable and compatible blend of 5 to 95 weight percent of an aromatic polyformal comprising from about 20 weight percent to 100 weight percent of repeating units (I) having the formula ##STR1## and from 0 weight percent to about 80 weight percent of repeating units (II) having the formula ##STR2## in which the repeating units (I) and the repeating units (II) are connected by interbonding units (III) having the formula--CH.sub.2 -- (III)wherein Y is selected from alkyl groups of 1 to 4 carbon atoms, chlorine or bromine, each z, independently, has a value of from 0 to 4 inclusive, n has a value of 0 or 1, and R.sub.1 is a divalent saturated or unsaturated aliphatic hydrocarbon radical, O, CO, SO.sub.2, S or a direct bond, with the proviso that when R.sub.1 is SO.sub.2 then repeating unit (II) is not the same as repeating unit (I), and 95 to 5 weight percent of a styrene copolymer or terpolymer and/or vinyl chloride containing polymers.
Abstract:
Described herein is a flame retardant molding composition comprising a particular poly(aryl ketone) and a flame retardant additive which is a metal salt of an aromatic sulfonic acid.
Abstract:
Described herein are flame retardant molding compositions comprising a blend of a polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid and a flame retardant additive which is a metal salt of an aromatic sulfonic acid. The composition may additionally contain one or more thermoplastic polymers.
Abstract:
Described herein are molding compositions comprising a blend of a poly(aryl ether), a polyester and a compatibilizing amount of an aromatic polycarbonate. These compositions are especially suited for molding articles useful in electrical applications.
Abstract:
Described herein are blends of water soluble polyethers and poly(hydroxyether)s. These blends are miscible and exhibit controlled extractability and a controlled water dissolution rate.
Abstract:
The addition of an amine functional poly(vinyl alcohol) in a process for making recycled paper products results in improvements in both the wet and dry strength of the resultant products. The amine functional poly(vinyl alcohol) used in the process is formed by the hydrolysis of vinyl acetate/vinyl amide copolymers or vinyl acetate/allyl amine copolymers, or optionally may be formed by the reaction of poly(vinyl alcohol ) with an amino-aldehyde dialkyl acetal.
Abstract:
A method for preparing a compatible blend of polyolefin and thermoplastic polyvinyl alcohol comprising:(a) melting polyolefin in the initial elements of a melt extruder,(b) adding and melt blending an unsaturated carboxylic acid or anhydride with the melted polyolefin downstream in the extruder,(c) adding peroxide to the melt blend and grafting the unsaturated carboxylic acid or anhydride onto the polyolefin, and(d) melt blending thermoplastic PVOH into the grafted polyolefin/unsaturated carboxylic acid or anhydride melt mixture.
Abstract:
In a melt extrudable polyvinyl alcohol composition consisting essentially of polyvinyl alcohol and plasticizer, which has been made melt extrudable by adding sufficient energy to the polyvinyl alcohol to both melt and substantially eliminate the crystallinity in the melt while simultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol, the improvement which comprises 5 to 25 wt % poly(butylene terephthalate)-polytetrahydrofuran block copolymer for improved impact resistance.