发明申请
US20090318634A1 Aqueous Polyurethane/Polyurea Dispersions 有权
水性聚氨酯/聚脲分散体

  • 专利标题: Aqueous Polyurethane/Polyurea Dispersions
  • 专利标题(中): 水性聚氨酯/聚脲分散体
  • 申请号: US12442008
    申请日: 2007-09-04
  • 公开(公告)号: US20090318634A1
    公开(公告)日: 2009-12-24
  • 发明人: Jürgen Münter
  • 申请人: Jürgen Münter
  • 申请人地址: VG Tortola
  • 专利权人: CLARIANT FINANCE (BVI) LIMITED
  • 当前专利权人: CLARIANT FINANCE (BVI) LIMITED
  • 当前专利权人地址: VG Tortola
  • 优先权: EP06121040.7 20060921
  • 国际申请: PCT/EP2007/059230 WO 20070904
  • 主分类号: C08L75/02
  • IPC分类号: C08L75/02
Aqueous Polyurethane/Polyurea Dispersions
摘要:
The present invention pertains to aqueous polyurethane-polyurea dispersions which are prepared by the acetone process using methyl acetate instead of ketones and are chain-extended using hydrazine or derivatives thereof, these dispersions having an improved stability towards thermal yellowing and a relatively low residual hydrazine/hydrazine derivative content.
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