发明名称 |
PROCESS FOR PRODUCING POLYURETHANE EMULSION FOR WATER-BASED ONE-PACK TYPE COATING MATERIAL |
摘要 |
[PROBLEMS] The invention is to provide an aqueous one-component coating agent that is environmentally friendly and safe, and is excellent in productivity and storage stability, and also in alkali resistance and solvent resistance of a coated film. [MEANS FOR SOLVING PROBLEMS] The problems are solved by providing a method for producing polyurethane emulsion for an aqueous one-component coating agent, comprising: reacting an organic diisocyanate (a1), a high molecular weight polyol (a2) and a low molecular weight glycol containing a carboxyl group (a3) to produce an isocyanate-terminated urethane prepolymer having a carboxyl group (A); mixing the urethane prepolymer (A) with a polyisocyanate containing a nonionic polar group (B); neutralizing the carboxyl group in the system with a neutralizing agent (C); and subjecting the mixture to emulsification in water and chain extension with water or an amine.
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申请公布号 |
EP1721947(A1) |
申请公布日期 |
2006.11.15 |
申请号 |
EP20050709533 |
申请日期 |
2005.02.01 |
申请人 |
NIPPON POLYURETHANE INDUSTRY CO., LTD.;IZUMI, NAOTAKA;MORISHIMA, TAKESHI;OHKI, IKU;IKEMOTO, MITSUSHIGE |
发明人 |
IZUMI, N.;MORISHIMA, T.;OHKI, I.;IKEMOTO, M. |
分类号 |
C08G18/09;C08G18/78;C09D175/04;C08G18/08;C08G18/12;C08G18/28;C08G18/44;C08G18/66;C08G18/70;C09D5/02 |
主分类号 |
C08G18/09 |
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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