发明名称 |
Lightfast polyurethane clear lacquers |
摘要 |
The invention provides novel solvent-free two-component polyurethane coating agents for preparing high quality yellowing-free coatings and a process for the preparation thereof. The coating agents include binder mixtures containing a polyisocyanate component with a viscosity at 23° C. of 2,000 to 150,000 mPas, a NCO content of 14 to 23 wt. % and a calculated mean NCO functionality of at least 2.8; a polyol component with a mean OH functionality <3, a viscosity at 23° C. of 5,000 to 150,000 mPas and a hydroxyl value of 400 to 700 mg KOH/g; and optionally one or more catalysts.
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申请公布号 |
US2004249108(A1) |
申请公布日期 |
2004.12.09 |
申请号 |
US20040858958 |
申请日期 |
2004.06.02 |
申请人 |
DIETRICH BERND-PETER;HALPAAP REINHARD;IRLE CHRISTOPH;NIESTEN MEIKE;TILLACK JORG |
发明人 |
DIETRICH BERND-PETER;HALPAAP REINHARD;IRLE CHRISTOPH;NIESTEN MEIKE;TILLACK JORG |
分类号 |
C08G18/42;C08G18/72;C08G18/79;C09D7/12;C09D175/06;(IPC1-7):C08G18/00;C08G18/28;C08G18/32;C08G18/38;C08G18/40;C08G18/77 |
主分类号 |
C08G18/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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