发明授权
- 专利标题： Polyester composition and film using same, sheet-like structure, electric insulation sheet, and solar cell back sheet, and manufacturing method therefor
- 专利标题（中）： 聚酯组合物和使用其的薄膜，片状结构，电绝缘片和太阳能电池背板及其制造方法
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申请号： US14003032申请日： 2012-02-29
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公开(公告)号： US09396836B2公开(公告)日： 2016-07-19
- 发明人: Tadamasa Suzuki , Shigeru Aoyama , Hiroji Kojima , Kozo Takahashi
- 申请人： Tadamasa Suzuki , Shigeru Aoyama , Hiroji Kojima , Kozo Takahashi
- 申请人地址： JP
- 专利权人： Toray Industries, Inc.
- 当前专利权人： Toray Industries, Inc.
- 当前专利权人地址： JP
- 代理机构： DLA PIPER, LLP (US)
- 优先权： JP2011-048108 20110304
- 国际申请： PCT/JP2012/055061 WO 20120229
- 国际公布： WO2012/121076 WO 20120913
- 主分类号： H01B3/42
- IPC分类号： H01B3/42 ; C08K3/32 ; C08G63/80 ; C08G63/83 ; C08J5/18 ; H01L31/049
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.