Abstract: A method for manufacturing a film or sheet comprises deforming a polymeric alloy at a temperature effective to impart to the deformed alloy a birefringence retardation of greater than or equal to about 750 nanometers. A method eliminating comets and veins in an optical film or sheet comprises annealing the film or sheet to a temperature greater than the lowest glass transition temperature of the polymeric resins contained in the alloy. A composition comprises a first polymeric resin in an amount of about 1 to about 99 wt %; and a second polymeric resin in an amount of about 1 to about 99 wt %, wherein the polymeric resins are blended with a deforming force effective to produce a polymeric alloy having a birefringence retardation of greater than or equal to about 750 nanometers.

Abstract: A composition comprising composition comprising a polymer blend of a polyamide resin and block copolyestercarbonates resin comprising organic carbonate blocks alternating with arylate blocks, said arylate blocks comprising arylate structural units derived from a 1,3-dihydroxybenzene and at least one aromatic dicarboxylic acid and having a degree of polymerization of at least about 4. The composition preferable has favorable properties of clarity and chemical resistance.

Abstract: A thermoplastic composition comprises a polyester-polycarbonate polymer comprising isophthalate-terephthalate-resorcinol ester units and carbonate units, and a poly(alkylene ester) comprising ethylene terephthalate units, 1,4-cyclohexyldimethylene terephthalate units, or a combination of ethylene terephthalate units and 1,4-cyclohexyldimethylene terephthalate units, wherein the sum of the mole percentage values of isophthalate-terephthalate-resorcinol ester units in the polyester-polycarbonate polymer, and of the mole percentage values of 1,4-cyclohexanedimethylene terephthalate units in the poly(alkylene ester) polymer, is a value greater than 40. In other embodiments, polycarbonate may be included. Also disclosed is a method for forming the thermoplastic compositions, and articles prepared therefrom.

Abstract: Disclosed herein is an appliance for use in an oral cavity, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth. Disclosed herein too is a method for maintaining or repositioning teeth in the oral cavity comprising placing an appliance in a patient's mouth, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth.

Abstract: A composition comprising a polymer blend of a polyamide resin and an immiscible cycloaliphatic polyester resin portion which may include a polycarbonate resin and a compatibilizer to enhance transparency, chemical resistance and mechanical properties.

Abstract: Disclosed herein is an appliance for use in an oral cavity, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth. Disclosed herein too is a method for maintaining or repositioning teeth in the oral cavity comprising placing an appliance in a patient's mouth, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth.

Abstract: A translucent composition comprises an aromatic polycarbonate (PC) and poly(1,4-cyclohexane dimethylene 1,4-cyclohexanedicarboxcylate) hereinafter referred to as (PCCD), with the weight ratio of PC to PCCD in the range of 30 to 85 PC to 70 to 15 PCCD and a glass fiber at least about 0.75 mm in length with quantity of glass fiber from about 1 to about 50 wt. % of the composition wherein the refractive index of the PC/PCCD mixture and the glass fiber matched between the range of about 1.540 to about 1.570.

Abstract: A method for manufacturing a film or sheet comprises deforming a polymeric alloy at a temperature effective to impart to the deformed alloy a birefringence retardation of greater than or equal to about 350 nanometers. A method of substantially eliminating comets and veins in an optical film or sheet comprises annealing the film or sheet comprising a polymeric alloy to a temperature proximate to a glass transition temperature of a polymeric resin contained in the alloy. A composition comprises a first polymeric resin in an amount of about 1 to about 99 wt %; and a second polymeric resin in an amount of about 1 to about 99 wt %, wherein the polymeric resins are treated with a deforming force or with an energy effective to produce a polymeric alloy having a birefringence retardation of greater than or equal to about 350 nanometers or with a birefringence retardation of less than or equal to about 150 nanometers.

Abstract: A method for manufacturing a film or sheet comprises deforming a polymeric alloy at a temperature effective to impart to the deformed alloy a birefringence retardation of greater than or equal to about 750 nanometers. A method eliminating comets and veins in an optical film or sheet comprises annealing the film or sheet to a temperature greater than the lowest glass transition temperature of the polymeric resins contained in the alloy. A composition comprises a first polymeric resin in an amount of about 1 to about 99 wt %; and a second polymeric resin in an amount of about 1 to about 99 wt %, wherein the polymeric resins are blended with a deforming force effective to produce a polymeric alloy having a birefringence retardation of greater than or equal to about 750 nanometers.

Abstract: Disclosed herein is an appliance for use in an oral cavity, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth. Disclosed herein too is a method for maintaining or repositioning teeth in the oral cavity comprising placing an appliance in a patient's mouth, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth.

Abstract: A method for manufacturing a film or sheet comprises deforming a polymeric alloy at a temperature effective to impart to the deformed alloy a birefringence retardation of greater than or equal to about 350 nanometers. A method of substantially eliminating comets and veins in an optical film or sheet comprises annealing the film or sheet comprising a polymeric alloy to a temperature proximate to a glass transition temperature of a polymeric resin contained in the alloy. A composition comprises a first polymeric resin in an amount of about 1 to about 99 wt %; and a second polymeric resin in an amount of about 1 to about 99 wt %, wherein the polymeric resins are treated with a deforming force or with an energy effective to produce a polymeric alloy having a birefringence retardation of greater than or equal to about 350 nanometers or with a birefringence retardation of less than or equal to about 150 nanometers.