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公开(公告)号:US09896558B2
公开(公告)日:2018-02-20
申请号:US13561196
申请日:2012-07-30
申请人: Christiane Giesker , Markus Schutte , Patrick Lax , Jörg Krogmann
发明人: Christiane Giesker , Markus Schutte , Patrick Lax , Jörg Krogmann
CPC分类号: C08J9/127 , C08J9/146 , C08J2203/162 , C08J2205/10 , C08J2375/04
摘要: The present invention relates to a process for producing rigid polyurethane foams by reaction of a) at least one organic polyisocyanate with b) at least one polyol component in the presence of a blowing agent mixture comprising water and halogenated alkenes, wherein the amount of water is at least 1.40 mol/kg of polyol component b) and the amount of halogenated alkene is at most 2.00 mol/kg of polyol component b), and also to the use of such a blowing agent mixture for producing corresponding rigid polyurethane foams and for increasing the adherence and reducing the thermal conductivity of corresponding rigid polyurethane foams. The present invention further relates to a rigid polyurethane foam obtainable by the process of the present invention.