Abstract: A transparent, laminated window, particularly for use as a vehicle windshield, has improved deicing capability and high luminous transmission and near IR rejection, comprises an optical element having a low sheet resistivity of less than about 3 ohms per square, such element containing at least two transparent metal layers electrically conductively associated with bus bar(s) and separated by one or more dielectric layers.

Abstract: Apparatus for forming discrete, shaped interlayer blanks comprises, in combination, an extrusion die containing a slot for forming a sheet from thermoplastic melt, means associated with the die for causing a portion of the melt to exit the slot at a greater mass flow rate than that of the remainder of the melt exiting the slot, means adjacent the die for quenching the sheet immediately after forming and frusto-conical pull rolls for forwardly shaping the sheet into arcuate form, the surfaces of said rolls adjacent the edges of greatest circumference positioned to contact the portion of the sheet formed from the melt exiting the slot at the greater mass flow rate.

Abstract: Polytetrafluoroethylene resin within a specific particle size range, preferably about 70 to about 700 microns, in polymeric thermoplastic styrenic compositions containing conventional flame retardant additives permits reducing the amount of such additives in the composition to levels low enough to avoid adverse effect on performance properties of such compositions which would otherwise occur at higher levels of such additives necessary to achieve UL-94 flame retardant performance.

Abstract: A composition for imparting fire-resistance to laminating interlayers comprising (a) a plasticizer blend of a char-forming component, such as an organic phosphate, and an oxygen sequestering agent, such as an organic phosphite, wherein the char-forming component is the major constituent; (b) a nucleating agent such as fumed silica, for dispersing fire decomposition products of the interlayer; and (c) a heat reactive bonding resin.

Abstract: A fire-resistant thermoplastic composition comprising polyvinyl butyral resin and a compatible mixture in an amount sufficient to provide fire-resistant properties to such composition which includes (a) a plasticizer blend of a char-forming component, such as an organic phosphate, and an oxygen sequestering agent, such as an organic phosphite, wherein the char-forming component is the major constituent; (b) a nucleating agent such as fumed silica for dispersing the fire decomposition products of the composition; and (c) a heat reactive bonding resin.

Abstract: An interlayer of polyvinyl butyral resin containing a compatible mixture of additives dispersed therein providing fire-resistant properties thereto, said mixture comprising a plasticizer blend of (a) a char-forming component, such as an organic phosphate, and an oxygen sequestering agent, such as an organic phosphite, wherein the char-forming agent is the major constituent; (b) a nucleating agent such as fumed silica for dispersing the fire decomposition products of the interlayer; and (c) a heat reactive bonding resin such as silicone resin.

Abstract: Molding compositions are prepared from blends of (A) a styrene-maleic anhydride-methyl methacrylate terpolymer which contains a rubber component; (B) an ABS or MBS polymer; and (C) a polycarbonate.

Abstract: Extruded polyvinyl butyral (PVB) sheet roughness is controlled by use of PVB resin lightly cross-linked through stable intermolecular linkages.

Abstract: In a polyvinyl butyral (PVB) sheet plasticized with a multiester of an alcohol having 2 to 4 hydroxyl groups and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule, which sheet does not craze polycarbonate or polyacrylate when in contact therewith, the addition of a synergistically effective amount of a monoester of a glycol and such C.sub.16 to C.sub.20 acid improves the low temperature penetration resistance and adhesion properties of such sheet without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in a laminated glass assembly.

Abstract: An ABS polymer comprising (A) a graft copolymer formed by graft polymerizing styrene and acrylonitrile monomers onto an initially ungrafted, low gel diene rubber and (B) a copolymer of said grafted monomers in which said graft copolymer is dispersed; said diene rubber comprising 3 to 25% by weight of such polymer with the polymerized acrylonitrile content thereof being 27 to 40% by weight.

Abstract: Polyblends comprising about 10 to about 90% by weight of polyphenylene oxide and about 90 to about 10% of SAN or ABS polymer comprising 8 to 17 average % by weight acrylonitrile in which the acrylonitrile compositional distribution in the SAN or ABS polymer is broad in that the standard deviation of the weight % AN about the mean value is at least about 3.5%.

Abstract: Extruded polyvinyl butyral (PVB) sheet roughness is controlled by use of PVB resin lightly cross-linked through intermolecular linkages developed through use of the hydrated form of formaldehyde.

Abstract: A plasticizer blend for polyvinyl butyral (PVB) comprising a monoester of a glycol and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule and a multiester of an alcohol having 2 to 4 hydroxyl groups and said unsaturated fatty acid, the monoester being present in the blend on a weight basis in an amount equal to or greater than the multiester. The low temperature penetration resistance and adhesion properties of PVB sheet plasticized with such blend is improved without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in contact therewith in a laminated glass assembly.

Abstract: An intermediate for use in a polyblend consisting essentially of a copolymer of monoalkenyl aromatic monomer such as styrene and a ethylenically unsaturated nitrile monomer such as acrylonitrile surface grafted onto rubber which is dispersed in a matrix copolymer of the graft copolymer monomers, the dispersed phase being monomodal in particle size distribution and the weight percent of surface-grafted nitrile monomer being less by at least 2% than the weight percent nitrile monomer in the matrix. This intermediate with mismatched nitrile monomer can be blended with another rubber graft copolymer of different particle size dispersed in ungrafted matrix which contains matched nitrile monomer in the surface graft and matrix to provide a polyblend having properties at least equivalent to those obtained by blending two rubber graft copolymers of different particle size dispersed in a matrix which each contain matched nitrile monomer levels in the surface graft and matrix.

Abstract: Low temperature impact delamination of laminates containing adjacent layers of polycarbonate or polyacrylate and polyvinyl butyral is overcome by a flexible, hydrophobic, adhesive coating of poly-vinylidene chloride or urethane acrylate resin at the interface between the polycarbonate or polyacrylate and the polyvinyl butyral.

Abstract: An intermediate for use in a polyblend consisting essentially of a copolymer of monoalkenyl aromatic monomer such as styrene and a ethylenically unsaturated nitrile monomer such as acrylonitrile surface grafted onto rubber which is dispersed in a matrix copolymer of the graft copolymer monomers, the dispersed phase being monomodal in particle size distribution and the weight percent of surface-grafted nitrile monomer being less by at least 2% than the weight percent nitrile monomer in the matrix. This intermediate with mismatched nitrile monomer can be blended with another rubber graft copolymer of different particle size dispersed in ungrafted matrix which contains matched nitrile monomer in the surface graft and matrix to provide a polyblend having properties at least equivalent to those obtained by blending two rubber graft copolymers of different particle size dispersed in a matrix which each contain matched nitrile monomer levels in the surface graft and matrix.

Abstract: A collapse resistant polyester container is provided for hot fill applications employing product fill temperatures up to about 190.degree. F. (87.8.degree. C.) or more. The container has at least one region which is thermoelastically deformable inwardly after the container is hot filled and sealed to offset the pressure forces which tend to collapse the container as the contents cool and create an internal vacuum. The thermoelastic region is preferably formed in a two step molding process in which the region is formed and heat set at a first position and then reformed outwardly to a second position and cooled in that position.

Abstract: Structure for mounting a spray-suppression side skirt adjacent a vehicle wheel which forcibly holds the skirt against displacement in operative position perpendicular to the roadway during movement of the vehicle, yet will accommodate guided movement of the skirt to a clearance position to permit access to the vehicle wheel or to accommodate the wheel striking the skirt during turning of the wheels.

Abstract: The invention relates to a process for preparing ABS polyblends having small and large grafted rubber particles dispersed therein providing polyblends having greater toughness and chemical resistance. The process includes extracting small grafted rubber particles into a separated monomer phase which is mass polymerized to a first melt, mixing said first melt with a second melt having present larger grafted rubber particles to form a third melt which is devolatilized to an ABS polyblend having a bimodal grafted rubber particle size distribution.

Abstract: The invention relates to a process for preparing ABS polymers by continuous mass polymerization wherein an alkenyl aromatic monomer having a diene rubber dissolved therein is charged continuously to a reactor simultaneously with a separate feed-stream of an alkenyl nitrile monomer. The reactor is stirred to maintain, in the reaction mixture contained therein, a substantially uniform composition and operates at a steady state polymer solids level above that at which phase inversion occurs and up to about 70% polymer solids such that the diene rubber added is dispersed as rubber particles having a particle size of about 0.1 to 10 microns. A partially polymerized reaction mixture is continuously removed from the reactor and an ABS polymer is recovered therefrom.