摘要:
In one embodiment, a multilayer structure comprises: an initial terpolymer layer, a second layer comprising plastic and/or glass, a polycarbonate layer, and an adhesive layer. The initial terpolymer layer comprises a polycarbonate terpolymer derived from a first dihydroxy compound, a second dihydroxy compound, and a third dihydroxy compound, the first dihydroxy compound has Structure (A) wherein Rf is a hydrogen or CH3; the second dihydroxy compound has Structure (A) and is different from the first dihydroxy compound; and the third dihydroxy compound does not have Structure (A), and wherein a sum of mole percent of all of the first dihydroxy compound and the second dihydroxy compound is greater than or equal to 45% relative to a sum of mole percent of all of the first dihydroxy compound, the second dihydroxy compound, and the third dihydroxy compound in the polycarbonate terpolymer.
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:
A method to reduce haze in the production of fire resistant polycarbonate compositions comprising flame retardant salts, wherein the salt is blended with a first polycarbonate to form a concentrate, and the concentrate is then added to a second polycarbonate resin.
摘要:
A water resistant permanent antistatic thermoplastic composition contains about 100 parts by weight of a thermoplastic polymer, such as polycarbonate or a blend thereof, about 0.1 to about 10 parts by weight of an antistatic agent, and about 0.1 to about 10 parts by weight of a polysiloxane-polyether copolymer.
摘要:
The present invention relates to flame retardant polycarbonate compositions with improved weathering performance, said compositions comprising one or more cyanoacrylic esters. The invention also relates to methods for improving the flame retardancy and weathering performances of polycarbonate compositions by incorporating cyanoacrylic ester(s). Finally, the invention further relates to articles manufactured from flame retardant polycarbonate compositions comprising cyanoacrylic ester(s).
摘要:
The invention relates to a method for the production of a branched polycarbonate composition, having increased melt strength, by late addition of branch-inducing catalysts to the polycarbonate oligomer in a melt polycondensation process. Surprisingly, it has been found that by adding branch-inducing catalysts, such as alkali metal compounds and/ or alkaline earth metal compounds, to the melt polycarbonate oligomer at a later stage of the melt polycondensation process, preferably after the oligomer has reached an average molecular weight of between about 3,000 and 30,000 g/mole, a unique branched polycarbonate composition is formed that has improved properties. It is believed that the addition of the branch-inducing catalysts at the later stages of the process produces a branched polycarbonate composition having longer chains between the branching points, and thus a new composition is produced. The invention also relates to various applications of the branched polycarbonate composition.
摘要:
The present invention provides resin compositions comprising a thermoplastic resin and at least one phosphoramide having a glass transition point of at least about 0° C., preferably of at least about 10° C., and most preferably of at least about 20° C. The present invention also relates to articles made from the resin compositions. The present invention also provides methods to make the resin compositions-having improved heat properties over compositions known in the art.
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 transparent, flame retardant polycarbonate composition consisting essentially of an aromatic polycarbonate resin and a flame-retarding amount of a guanidine salt or derivatives thereof, wherein the amount of guanidine salt or derivatives thereof is about 1 wt. % or less.
摘要:
In one embodiment, a multilayer structure comprises: an initial terpolymer layer, a second layer comprising plastic and/or glass, a polycarbonate layer, and an adhesive layer. The initial terpolymer layer comprises a polycarbonate terpolymer comprising structures derived from a dihydroxy compound having Structure (I) wherein Rf is a hydrogen or CH3; a second dihydroxy compound of Structure (A) which is derived from Structure (I) and is different from Structure (I); and a third dihydroxy compound of Structure (B) which is not derived from Structure (I), wherein a sum of mole percent of all of Structures (I) and Structure (A) is greater than or equal to 45% relative to a sum of mole percent of all of Structure (I), Structure (A), and Structure (B) in the polycarbonate terpolymer.