发明授权
- 专利标题： Polyester resin composition, process for producing the same, and polyester film
- 专利标题（中）： 聚酯树脂组合物，其制备方法和聚酯薄膜
-
申请号： US11597895申请日： 2005-05-24
-
公开(公告)号： US08299158B2公开(公告)日： 2012-10-30
- 发明人: Yoshihiro Honma , Jun Sakamoto , Masahiro Kimura
- 申请人： Yoshihiro Honma , Jun Sakamoto , Masahiro Kimura
- 申请人地址： JP Tokyo
- 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 Tokyo
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2004-160735 20040531; JP2004-160737 20040531; JP2004-260816 20040908
- 国际申请： PCT/JP2005/009430 WO 20050524
- 国际公布： WO2005/116108 WO 20051208
- 主分类号： C08G73/10
- IPC分类号： C08G73/10
摘要：
A polyester resin composition having an equivalent spherical diameter of 1 mm to 50 mm, a degree of crystallization of not less than 65% and less than 99%, an intrinsic viscosity of not more than 0.7 dl/g and a cyclic trimer content of not more than 0.4% by weight. This polymer resin composition has an excellent color tone, causes no significant viscosity lowering or viscosity rise, and can withstand a process which is exposed to a long-term thermal history. A polyester resin composition having a viscosity suitable for extrusion in a general-purpose manner, a production process thereof, and a polyester film are also provided.