发明名称 |
BEHANDLUNGSVERFAHREN EINES HOLZSUBSTRATES ZUR ERHÖHUNG DER CHEMIKALIENBESTÄNDIGKEIT |
摘要 |
<p>The invention concerns a method for providing a substrate comprising a wooden surface with a coating having high properties of resistance against attack from chemical products. The invention is characterised in that it comprises steps which consist in: a) adding to an aqueous polyol suspension a composition based on isocyanate(s) and an anionic surfactant having a hydrophilic part comprising an anionic group and a lipophilic part comprising a hydrocarbon radical, said surfactant also including a fragment of polyethylene and/or propylene glycol chain of at least 1, advantageously at least 5, preferably at least 7 ethylenyloxyl and/or propylenyloxyl units, and said isocyanate composition comprising not more than 30% by volume of surfactant bound to an isocyanate function, to form an isocyanate emulsion in water, b) applying said mixture to the surface of said wooden substrate; c) allowing said isocyanate(s) to react with said polyol to form a polyurethane coating.</p> |
申请公布号 |
DE60114862(D1) |
申请公布日期 |
2005.12.15 |
申请号 |
DE2001614862 |
申请日期 |
2001.09.17 |
申请人 |
RHODIA CHIMIE, BOULOGNE BILLANCOURT |
发明人 |
GRANIER, VINCENT;WUSTMANN, UWE |
分类号 |
C08G18/70;C09D5/02;C09D171/02;C09D175/04;C09D175/06;(IPC1-7):C08G18/70 |
主分类号 |
C08G18/70 |
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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