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81. 发明授权

US4246356A Foam manufacture using two catalysts and a vaporizable auxiliary blowing agent 失效
标题翻译：使用两种催化剂和可汽化的辅助发泡剂进行泡沫制造
公开(公告)号：US4246356A
公开(公告)日：1981-01-20
申请号：US40288
申请日：1979-05-18
申请人： Graham D. Walmsley
发明人： Graham D. Walmsley
IPC分类号： B29C44/46 , C08J9/14 , C08G18/14
CPC分类号： C08J9/145 , B29C44/462 , C08J2375/04 , Y10S264/05 , Y10S264/84 , Y10S521/917
摘要： A foam material, such as a polyurethane foam, is formed by mixing a polymer forming material with a blowing agent and two catalysts, one catalyst being provided to catalyze polymer formation and the other catalyst being provided to catalyze blowing. An auxiliary blowing agent in the form of a vaporizable substance, such as methylene chloride, is also incorporated. In one embodiment, the mixed components are maintained in a reaction vessel prior to application of same to a surface on which the foam is allowed to expand. In a further embodiment, in the case where the foam is polyurethane foam and the vaporizable substance is methylene chloride, the mixed components are maintained in a reaction vessel prior to application of same to a surface on which the foam is allowed to expand and the methylene chloride is used in an amount in excess of 12% of the weight of the polyurethane-forming material.
摘要翻译：通过将聚合物形成材料与发泡剂和两种催化剂混合形成泡沫材料，一种催化剂用于催化聚合物形成，另一种催化剂用于催化吹塑。还引入了可汽化物质如二氯甲烷形式的辅助发泡剂。在一个实施方案中，将混合的组分在施用于允许泡沫膨胀的表面之前保持在反应容器中。在另一个实施方案中，在泡沫是聚氨酯泡沫体并且可汽化物质是二氯甲烷的情况下，将混合的组分在施加到泡沫被允许膨胀的表面上之前保持在反应容器中，并且将亚甲基氯化物的使用量超过聚氨酯形成材料重量的12％。

82. 发明授权

US4192923A Amino resin foam, one-phase solution foam precursor and method of producing foam 失效
标题翻译：氨基树脂泡沫，单相溶液泡沫前体和生产泡沫的方法
公开(公告)号：US4192923A
公开(公告)日：1980-03-11
申请号：US955439
申请日：1978-10-27
申请人： Edward G. Tajkowski
发明人： Edward G. Tajkowski
IPC分类号： C08J9/00 , C08J9/14 , C08J9/30
CPC分类号： C08J9/145 , C08J9/0023 , C08K5/05 , C08J2361/20 , Y10S521/913
摘要： Amino resin foams of the urea-formaldehyde or urea-melamine-formaldehyde type formed from a one-phase solution of methylene chloride solvent, propylene glycol co-solvent, catalyst and polymer precursors which may be urea and formaldehyde or urea, melamine and formaldehyde. As reaction occurs between the polymer precursors in the solution, the methylene chloride in the solution vaporizes foaming the resin. In the product foam, the propylene glycol acts as a plasticizer and the methylene chloride as the blowing agent in a closed-cell foam having superior stability and insulative properties. The product foam is useful in building insulation and for other insulative purposes.
摘要翻译：由二氯甲烷溶剂，丙二醇共溶剂，催化剂和聚合物前体（可以是脲和甲醛或脲），三聚氰胺和甲醛的单相溶液形成的脲 - 甲醛或脲 - 三聚氰胺 - 甲醛型氨基树脂泡沫。当溶液中的聚合物前体之间发生反应时，溶液中的二氯甲烷汽化发泡树脂。在产品泡沫中，丙二醇作为增塑剂和作为发泡剂的二氯甲烷作为具有优异的稳定性和绝缘性的闭孔泡沫。产品泡沫可用于建筑绝缘和其他绝缘目的。

83. 发明授权

US2537977A Method of making a shaped thermoplastic cellular product 失效
标题翻译：制造成型热塑性细胞产品的方法
公开(公告)号：US2537977A
公开(公告)日：1951-01-16
申请号：US3887348
申请日：1948-07-15
申请人： DOW CHEMICAL CO
发明人： DULMAGE FREDERICK E
IPC分类号： B29C33/60 , B29C44/50 , C08J9/14
CPC分类号： C08J9/145 , B29C44/50 , Y10S264/14

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