发明公开
EP1867670A2 Aqueous polyurethane dispersion and method for making and using same
审中-公开
WässrigePolyurethan-Dispersion sowie Herstellungs- und Verwendungsverfahrendafür
- 专利标题: Aqueous polyurethane dispersion and method for making and using same
- 专利标题(中): WässrigePolyurethan-Dispersion sowie Herstellungs- und Verwendungsverfahrendafür
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申请号: EP07117900.6申请日: 2004-11-15
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公开(公告)号: EP1867670A2公开(公告)日: 2007-12-19
- 发明人: Klingenberg, Eric Howard , Fazel, Shafiq Nisarali
- 申请人: Air Products and Chemicals, Inc.
- 申请人地址: 7201 Hamilton Boulevard Allentown, PA 18195-1501 US
- 专利权人: Air Products and Chemicals, Inc.
- 当前专利权人: Air Products and Chemicals, Inc.
- 当前专利权人地址: 7201 Hamilton Boulevard Allentown, PA 18195-1501 US
- 代理机构: Schwabe - Sandmair - Marx
- 优先权: US715916 20031118
- 主分类号: C08G18/76
- IPC分类号: C08G18/76 ; C08G18/08 ; C08G18/12 ; C08G18/48 ; C09J175/08
摘要:
Aqueous polyurethane dispersions comprising polyurethane polymer and methods for making and using same are disclosed herein. In one aspect of the present invention, aqueous polyurethane dispersions, comprising a polyurethane polymer having a weight average molecular weight ranging from 20,000 to 80,000, are prepared by controlling the weight average molecular weight of the polymer by reacting the isocyanate terminated prepolymer with at least one chain terminating agent; and/or maintaining a N/COOH molar ratio of amine in the neutralizing agent to acid functional group in the isocyanate reactive compound to from about 0.5:1 to about 1:1.
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