发明申请
- 专利标题: Aqueous Polyurethane/Polyurea Dispersions
- 专利标题(中): 水性聚氨酯/聚脲分散体
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申请号: US12442008申请日: 2007-09-04
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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
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.
公开/授权文献
- US09102781B2 Aqueous polyurethane/polyurea dispersions 公开/授权日:2015-08-11
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