发明名称 |
RIGID FOAMS SUITABLE FOR WALL INSULATION |
摘要 |
Polyurethane/polyisocyanurate foams having a NFPA 101 Class A rating (ASTM E-84) are produced from a foam-forming reaction mixture that includes: an organic polyisocyanate, an isocyanate-reactive composition that includes at least one polyether polyol or polyester polyol with a nominal hydroxyl functionality of at least 2.0, a blowing agent composition and at least one halogen-free flame retardant. The blowing agent composition includes: (1) up to 5% by weight, based on total weight of the foam-forming composition, of one or more hydrocarbons having an LEL less than 2% by volume in air; and/or (2) a hydrocarbon having an LEL greater than 2% by volume in air; and (3) up to 1% by weight, based on total weight of foam-forming composition, of water. |
申请公布号 |
EP2892937(A1) |
申请公布日期 |
2015.07.15 |
申请号 |
EP20130836044 |
申请日期 |
2013.09.04 |
申请人 |
BAYER MATERIALSCIENCE LLC |
发明人 |
COMBS, GEORGE, G.;PIGOTT, SUSAN, C. |
分类号 |
C08G18/48;C08J9/04;C08L75/04 |
主分类号 |
C08G18/48 |
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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