摘要:
A multilayer thermoplastic film having polycarbonate layers is disclosed, in which a first layer comprises a first polycarbonate that comprises repeat units derived from one or more of a monoaryl monomer (II) and/or (III), and a diaryl monomer (IV) as defined herein. A second layer, adjacent to the first layer and coextruded therewith, comprises another polycarbonate that is not the same as a polycarbonate in the first layer. The first layer provides improved properties, for example hardness, impact, and/or scratch resistance.
摘要:
A method of making a thermoplastic composition comprises melt blending a reaction mixture comprising a first polycarbonate comprising repeat units derived from monoaryl monomers (II) and (III) and a diaryl monomer (IV), wherein the sum of the mole percent of the repeat units derived from monomers (II) and (III) is greater than or equal to 30 mole percent, and the mole percent of the repeat units derived from monomer (IV) is 5 to 70 mole percent, each based on the total moles the repeat units derived from monomers (II), (III), and (IV), and the total weight of the repeat units derived from monomers (II), (III), and (IV) is greater than or equal to 90 wt. % of the first polycarbonate; and an additional polycarbonate, comprising 50 to 100 mole percent of repeat units derived from a bisphenol cyclohexane.
摘要:
Methods of forming polycarbonate graft copolymers are provided. In particular, a polycarbonate polymer or copolymer containing allyl groups provides the backbone for the graft copolymer, and pendant chains are attached to the copolymer through the allyl groups. The graft copolymers exhibit a combination of high transparency, good graft levels, good scratch resistance, and/or good anti-fog properties.
摘要:
Methods of forming polycarbonate graft copolymers are provided. In particular, a polycarbonate polymer or copolymer containing allyl groups provides the backbone for the graft copolymer, and pendant chains are attached to the copolymer through the allyl groups. The graft copolymers exhibit a combination of high transparency, good graft levels, good scratch resistance, and/or good anti-fog properties.