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1. 发明授权

US06235806B1 Open-celled rigid polyurethane foam and method for producing the same 失效
标题翻译：开孔硬质聚氨酯泡沫及其制造方法
公开(公告)号：US06235806B1
公开(公告)日：2001-05-22
申请号：US09337686
申请日：1999-06-22
申请人： Michihiro Ohga , Masato Hayashi , Junnichi Hosaka , Reishi Naka
发明人： Michihiro Ohga , Masato Hayashi , Junnichi Hosaka , Reishi Naka
IPC分类号： C08G1834
CPC分类号： C08J9/34 , B29C44/025 , C08J2205/05 , C08J2205/10 , C08J2375/04
摘要： In order to provide an open-celled rigid polyurethane foam, which realizes a low material cost per unit volume of the foam and excellent surface smoothness because of its unique structure, and a thermal insulation material comprising the foam, an open-celled rigid polyurethane foam which has an open cell content of not less than 99% in a state that a skin layer is left on the foam is produced by foam molding, preferably multiple-stage compression molding, of foaming components containing a polyol component and an isocyanate component with an equivalent ratio of NCO/OH of about 0.55-0.95, and a blowing agent, preferably water, and a thermal insulation material is produced from the foam preferably subjected to a baking treatment by means of far-infrared ray exposure. Further, in order to provide a vacuum insulation material that does not result waste upon production, and provide good appearance and high reliability when used for products such as freezing and refrigerating apparatuses by using the aforementioned open-celled rigid polyurethane foam, a vacuum insulation material is produced by covering the foam as a whole with a container composed of a gas barrier film, reducing internal pressure of the container, and sealing the container to provide the vacuum insulation material.
摘要翻译：为了提供一种开孔刚性聚氨酯泡沫，其泡沫单位体积的材料成本低，由于其独特的结构而具有优异的表面平滑性，而且包括泡沫的绝热材料，开孔硬质聚氨酯泡沫通过泡沫成型，优选多级压缩成型，在含有多元醇成分和异氰酸酯成分的发泡成分中制造具有不小于99％的开孔含量， NCO / OH的当量比为约0.55-0.95，发泡剂，优选为水，并且由优选通过远红外线曝光进行烘烤处理的泡沫制成绝热材料。此外，为了提供不会在生产时造成浪费的真空绝热材料，并且当通过使用上述开孔硬质聚氨酯泡沫体用于冷冻和制冷装置等产品时，提供良好的外观和高可靠性的真空绝热材料是通过用由阻气膜构成的容器整体覆盖泡沫而产生的，降低了容器的内部压力，并且密封容器以提供真空绝热材料。

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