TRANSPARENT, FLAME-RETARDANT HIGH-HEAT POLYCARBONATE COMPOSITIONS FOR THIN WALL APPLICATIONS
A flame retardant composition comprising: 45.0-99.9 wt % of a high heat copolycarbonate comprising high heat carbonate units derived from high heat bisphenol monomers, and optionally comprising low heat carbonate units, wherein a homopolycarbonate of the low heat carbonate units has a glass transiti...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
02.03.2023
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Subjects | |
Online Access | Get full text |
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Summary: | A flame retardant composition comprising: 45.0-99.9 wt % of a high heat copolycarbonate comprising high heat carbonate units derived from high heat bisphenol monomers, and optionally comprising low heat carbonate units, wherein a homopolycarbonate of the low heat carbonate units has a glass transition temperature of up to 150° C. as determined by differential scanning calorimetry as per ASTM D3418 with heating rate of 20° C./min; 0-55 wt % of a homopolycarbonate; 0.1-0.8 wt % of a Ci-i6 alkyl sulfonate salt flame retardant; each based on the total weight of the flame retardant composition wherein a molded sample of the flame retardant composition has a UL 94 rating of V0 at a thickness of 1.5 millimeter, and a transmission of greater than 80%, 85%, or 88% or a haze of less than 2%, or 1%, each of the transmission and haze was determined according ASTM D1003 at a thickness of 1.0 millimeter. |
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Bibliography: | Application Number: US202017782273 |