Abstract: A multiwall sheet (30) comprising a first wall (2); a second wall (4); a plurality of ribs (8) extended between the first and second walls (2, 4); and a plurality of mid-ribs (6), wherein one mid-rib (6) extends between each two adjacent ribs (8), wherein the mid-ribs (6) extend at a mid-rib angle (18) relative to an adjoining rib (8), and wherein the mid-rib angle (18) is not 90° relative to a rib (8) to which it attaches, wherein the mid-ribs (6) attach only to adjacent ribs (8), and wherein the mid-ribs (6) do not attach to either the first or second walls (2, 4).

Abstract: The present disclosure relates to thermoplastic polycarbonate compositions comprising a first polycarbonate component, a second polycarbonate component comprising an isosorbide/resorcinol/bisphenol-A polycarbonate terpolymer, and at least one impact modifier. The disclosed compositions have, among other characteristics, improved Notched Izod Impact strength, tensile modulus, tensile strength, and multi-axial impact strength. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: In some embodiments, a multilayer sheet comprises: a first cap layer formed from a first cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; a second cap layer formed from a second cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; and a core layer formed from a core composition comprising polycarbonate and without potassium perfluorobutane sulfonate. The core layer is disposed between the first cap layer and the second cap layer.

Abstract: Disclosed is a thermoplastic composition comprising a polycarbonate terpolymer comprising structures derived from structures (I), (II) and (III), wherein (I) is a dihydroxy compound having the structure (A): wherein n is 0 to 4 and Rf is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group; (II) comprises a second dihydroxy compound derived from Formula (A) and different from (I) and wherein n and Rf are as previously defined; and (III) a third dihydroxy compound not derived from Formula (A), wherein the sum of the mol percent of all of structures (I) and (II) is greater than 45% relative to the sum of the molar amounts of all of structures (I), (II) and (III) in the polycarbonate terpolymer and wherein said polycarbonate terpolymer is amorphous; an impact modifier; an ungrafted rigid copolymer; and a flame retardant. The thermoplastic composition has improved chemical resistance and flame retardance.

Abstract: The present disclosure relates to thermoplastic polycarbonate compositions comprising a first polycarbonate component, a second polycarbonate component comprising an isosorbide/resorcinol/bisphenol-A polycarbonate terpolymer, and at least one impact modifier. The disclosed compositions have, among other characteristics, improved Notched Izod Impact strength, tensile modulus, tensile strength, and multi-axial impact strength. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: In some embodiments, a multilayer sheet comprises: a first cap layer formed from a first cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; a second cap layer formed from a second cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; and a core layer formed from a core composition comprising polycarbonate and without potassium perfluorobutane sulfonate. The core layer is disposed between the first cap layer and the second cap layer.

Abstract: In some embodiments, a multilayer sheet comprises: a first cap layer formed from a first cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; a second cap layer formed from a second cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; and a core layer formed from a core composition comprising polycarbonate and without potassium perfluorobutane sulfonate. The core layer is disposed between the first cap layer and the second cap layer.

Abstract: Polycarbonate compositions are disclosed. The compositions comprise a polycarbonate polymer (A) having repeating units derived from at least three different monomers, one monomer being 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP); and the other two monomers having the formula: wherein each Rk is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group, and n is 0 to 4; and an impact modifier (B). The resulting composition has improved heat resistance and chemical resistance, particularly to Fuel C.

Abstract: Disclosed herein is an isosorbide-based polycarbonate polymer comprising: an isosorbide unit, an aliphatic unit derived from a C14-44 aliphatic diacid, C14-44 aliphatic diol, or combination of these; and a polysiloxane block.

Abstract: Polycarbonate compositions are disclosed. The compositions comprise a polycarbonate polymer (A) having repeating units derived from at least three different monomers, one monomer being 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP); and the other two monomers having the formula: wherein each Rk is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group, and n is 0 to 4; and an impact modifier (B). The resulting composition has improved heat resistance and chemical resistance, particularly to Fuel C.

Abstract: Disclosed herein is an isosorbide-based polycarbonate polymer comprising: an isosorbide unit, an aliphatic unit derived from a C14-44 aliphatic diacid, C14-44 aliphatic diol, or combination of these; and a polysiloxane block.

Abstract: Disclosed herein is an isosorbide-based polycarbonate polymer comprising: an isosorbide unit, an aliphatic unit derived from a C14-44 aliphatic diacid, C14-44 aliphatic diol, or combination of these; and optionally, an additional unit different from the isosorbide and aliphatic units, wherein the isosorbide unit, aliphatic unit, and additional unit are each carbonate, or a combination of carbonate and ester units. Also disclosed are a thermoplastic composition and an article comprising the isosorbide-based polycarbonate.

Abstract: Disclosed is a thermoplastic composition comprising a polycarbonate terpolymer comprising structures derived from structures (I), (II) and (III), wherein (I) is a dihydroxy compound having the structure (A): wherein n is 0 to 4 and Rf is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group; (II) comprises a second dihydroxy compound derived from Formula (A) and different from (I) and wherein n and Rf are as previously defined; and (III) a third dihydroxy compound not derived from Formula (A), wherein the sum of the mol percent of all of structures (I) and (II) is greater than 45% relative to the sum of the molar amounts of all of structures (I), (II) and (III) in the polycarbonate terpolymer and wherein said polycarbonate terpolymer is amorphous; an impact modifier; an ungrafted rigid copolymer; and a flame retardant. The thermoplastic composition has improved chemical resistance and flame retardance.