发明申请
US20140023841A1 POLYESTER COMPOSITION AND FILM USING SAME, SHEET-LIKE STRUCTURE, ELECTRIC INSULATION SHEET, AND SOLAR CELL BACK SHEET, AND MANUFACTURING METHOD THEREFOR 有权
聚酯组合物和使用其的膜,片状结构,电绝缘片和太阳能电池片及其制造方法

POLYESTER COMPOSITION AND FILM USING SAME, SHEET-LIKE STRUCTURE, ELECTRIC INSULATION SHEET, AND SOLAR CELL BACK SHEET, AND MANUFACTURING METHOD THEREFOR
摘要:
A polyester composition contains polyester, a phosphoric acid and an alkali metal phosphate, a phosphorous element content P (mol/t) is 1.8 mol/t or more and 5.0 mol/t or less relative to the whole of the polyester composition. The polyester composition contains at least one metal element of Mn and Ca, any divalent metal element content other than Mn and Ca is 5 ppm or less, and when an alkali metal element content relative to the polyester composition is denoted by M1 (mol/t), and a total amount of Mn element content and Ca element content relative to the polyester composition is denoted by M2 (mol/t), a metal element content M (mol/t) in the polyester composition which is calculated by expression (i) below and the phosphorous element content P (mol/t) satisfy expression (ii): (i) M=M1/2+M2 and (ii) 1.1≦M/P≦3.0.
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