摘要:
A poly(siloxane) copolymer composition comprising: a first polymer comprising a first repeating unit, and a poly(siloxane) block unit, a second polymer different from the first polymer and comprising of bromine; and optionally, one or more third polymers different from the first polymer and second polymer; wherein siloxane units are present in the composition in an amount of at least 0.3 wt %, and bromine is present in the composition in an amount of at least 7.8 wt %, each based on the sum of the wt % of the first, second, and optional one or more third polymers; and further wherein an article molded from the composition has an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, and an E662 smoke test Dmax value of less than 200.
摘要翻译:一种聚(硅氧烷)共聚物组合物,其包含:包含第一重复单元的第一聚合物和聚(硅氧烷)嵌段单元,不同于第一聚合物并包含溴的第二聚合物; 和任选的一种或多种不同于第一聚合物和第二聚合物的第三聚合物; 其中硅氧烷单元以至少0.3重量%的量存在于组合物中,并且溴以至少7.8重量%的量存在于组合物中,各自基于第一,第二, 和任选的一种或多种第三聚合物; 并且其中由所述组合物成型的制品具有小于65kW-min / m 2的OSU集成的2分钟的热释放试验值和小于65kW / m 2的峰值放热率,以及E662烟雾试验Dmax值 小于200。
摘要:
A poly(siloxane) copolymer composition comprising: a first polymer comprising a first repeating unit, and a poly(siloxane) block unit, a second polymer different from the first polymer and comprising of bromine; and optionally, one or more third polymers different from the first polymer and second polymer; wherein siloxane units are present in the composition in an amount of at least 0.3 wt %, and bromine is present in the composition in an amount of at least 7.8 wt %, each based on the sum of the wt % of the first, second, and optional one or more third polymers; and further wherein an article molded from the composition has an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, and an E662 smoke test Dmax value of less than 200.
摘要翻译:一种聚(硅氧烷)共聚物组合物,其包含:包含第一重复单元的第一聚合物和聚(硅氧烷)嵌段单元,不同于第一聚合物并包含溴的第二聚合物; 和任选的一种或多种不同于第一聚合物和第二聚合物的第三聚合物; 其中硅氧烷单元以至少0.3重量%的量存在于组合物中,并且溴以至少7.8重量%的量存在于组合物中,各自基于第一,第二, 和任选的一种或多种第三聚合物; 并且其中由所述组合物成型的制品具有小于65kW-min / m 2的OSU集成的2分钟的热释放试验值和小于65kW / m 2的峰值放热率,以及E662烟雾试验Dmax值 小于200。
摘要:
A composition comprising: a first polycarbonate comprising a poly(siloxane-carbonate); a second polycarbonate different from the first polycarbonate; and optionally, a third polycarbonate different from the first and second polycarbonate; wherein the first polycarbonate is present in an amount effective to provide the siloxane units of in the first polycarbonate in an amount of at least 0.3 wt %, and the second polycarbonate is present in an amount effective to provide the bromine of the second polycarbonate in an amount of at least 7.8 wt %; and further wherein an article molded from the composition has an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, and an E662 smoke test Dmax value of less than 200.
摘要翻译:一种组合物,其包含:包含聚(硅氧烷 - 碳酸酯)的第一聚碳酸酯; 不同于第一聚碳酸酯的第二聚碳酸酯; 和任选地,不同于第一和第二聚碳酸酯的第三聚碳酸酯; 其中所述第一聚碳酸酯以有效提供至少0.3重量%的量的所述第一聚碳酸酯中的硅氧烷单元的量存在,并且所述第二聚碳酸酯以有效提供所述第二聚碳酸酯的溴的量存在于 至少7.8wt%的量; 并且其中由所述组合物成型的制品具有小于65kW-min / m 2的OSU集成的2分钟的热释放试验值和小于65kW / m 2的峰值放热率,以及E662烟雾试验Dmax值 小于200。
摘要:
A thermoplastic composition which comprises a siloxane polycarbonate block copolymer wherein the polysiloxane segments of the copolymer are of the formula: ##STR1## where R.sup.1, R.sup.2, Y, D, A, X, A' and E are as defined herein, and high heat polycarbonates containing recurring or repeating polycarbonate units of the formula: ##STR2## wherein Z is --O--, --N(R.sup.3)-- or a mixture thereof and R.sup.3 is selected from hydrogen, hydrocarbyl and halogen-substituted hydrocarbyl.
摘要:
Terpolymers suitable as molding resins are provided having aromatic polyester segments polycarbonate segments and polysiloxane segments of the structure ##STR1## where R.sup.1, R.sup.2, Y and D are as defined herein, and where the weight percentage of polyester and polycarbonate segments is from 50 to 99%, preferably 92 to 96%, and the weight percentage of polysiloxane segments is from 50 to 1%, preferably from 8 to 4%. Also provided is a one-step process to prepare the new terpolymers by reacting together a siloxane, a bisphenol and an aromatic dicarboxylic acid halide.
摘要:
A composition comprising: a first polycarbonate comprising a poly(siloxane-carbonate); a second polycarbonate different from the first polycarbonate; and optionally, a third polycarbonate different from the first and second polycarbonate; wherein the first polycarbonate is present in an amount effective to provide the siloxane units of in the first polycarbonate in an amount of at least 0.3 wt %, and the second polycarbonate is present in an amount effective to provide the bromine of the second polycarbonate in an amount of at least 7.8 wt %; and further wherein an article molded from the composition has an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, and an E662 smoke test Dmax value of less than 200.
摘要:
Benzoxazolyl brightner compounds and thermoplastic combinations containing such are provided herein. The thermoplastic compositions comprise a thermoplastic resin, a phosphite heat stabilizer present in reduced levels, a brightner present in reduced levels and a pigment. Preferably the thermoplastic resin composition is transparent in nature. The compositions are useful for making molded and blow molded articles which require high levels of transparency, for example, glazing materials such thermoplastic windows. The composition exhibits enhanced appearance, namely a bright natural color in combination with low levels of yellowness by utilizing in combination reduced levels of phosphite and reduced levels of brightner, with moderate levels of pigment.
摘要:
The present invention provides novel silicone compositions comprising phenol-modified branched and cyclic silicones which provide improved low temperature viscosity properties.
摘要:
Block condensation copolymers with improved processability, low temperature impact strength and solvent resistance have a polysiloxane block such as ##STR1## where D is about 10 to 120, and a polycarbonate-aliphatic polyester block. Such polymers are made by an interfacial reaction of phosgene with a bisphenol, a phenol-terminated siloxane, and an aliphatic dicarboxylic acid salt.
摘要:
There is disclosed a novel epoxy-modified branched epoxy copolymerizate which can be copolymerized with other thermoplastics, such as polycarbonates, to modify melt flow.