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    • 3. 发明授权
    • Weatherable, thermostable polymers having improved flow composition
    • 具有改善流动组成的耐候性耐热聚合物
    • US07605221B2
    • 2009-10-20
    • US11426680
    • 2006-06-27
    • Gary C. DavisBrian D. MullenPaul D. Sybert
    • Gary C. DavisBrian D. MullenPaul D. Sybert
    • C08G77/14
    • C08G64/186C08G63/64C08G63/6956C08G77/448C08L69/00C08L83/10C08L2666/02
    • A copolymer composition comprises a polysiloxane block of Formula XIX or XXII, having 4 to 50 siloxane units, and a polyarylate-polycarbonate block consisting essentially of 50 to 99 mol % arylate polyester units and 1 to 50 mol % aromatic carbonate units, wherein 1 to 30 mole percent of the aromatic carbonate units are resorcinol carbonates, and 0 to 35 mol % of the aromatic carbonate units are bisphenol carbonates; wherein the sum of mole percentages of arylate polyester units, and aromatic carbonate units is 100 mol %; the polysiloxane blocks connect to an arylate ester unit, and/or an aromatic carbonate unit; the siloxane units of the polysiloxane block are present at 0.2 to 10 wt % based on weight of the copolymer composition; and a molded article of 3.2±0.12 millimeters thickness and consisting of the copolymer composition has a percent transmittance greater than or equal to 70%, according to ASTM D1003-00.
    • 共聚物组合物包含具有4至50个硅氧烷单元的式XIX或XXII的聚硅氧烷嵌段和基本上由50至99mol%芳基化聚酯单元和1至50mol%芳族碳酸酯单元组成的聚芳酯 - 聚碳酸酯嵌段,其中1至 30摩尔%的芳族碳酸酯单元是间苯二酚碳酸酯,0-35摩尔%的芳族碳酸酯单元是双酚碳酸酯; 其中芳基化聚酯单元和芳族碳酸酯单元的摩尔百分比之和为100摩尔%。 聚硅氧烷嵌段连接到芳基酯单元和/或芳族碳酸酯单元; 聚硅氧烷嵌段的硅氧烷单元以基于共聚物组合物的重量计为0.2-10重量%存在; 并且根据ASTM D1003-00,由共聚物组合物组成的3.2±0.12毫米厚的模制品具有百分比透射率大于或等于70%。