Polyurethane foam for sealant
    2.
    发明授权
    Polyurethane foam for sealant 失效
    聚氨酯泡沫塑料用于密封剂

    公开(公告)号:US5990186A

    公开(公告)日:1999-11-23

    申请号:US810080

    申请日:1997-03-04

    摘要: A polyurethane foam for a sealant is disclosed which is produced from a composition prepared by compounding reaction mixture comprising a polyisocyanate ingredient and a polyol ingredient with a given amount by weight of an ozone inhibitor ingredient. A sealant of a predetermined shape is obtained from the foam. The polyol ingredient may be one ordinarily used for producing soft polyurethane foams, but especially preferably comprises a polyester-polyether polyol having both an ester segment and an ether segment in the molecular chain. The foam has excellent resistance to ozone deterioration and hence retains a sufficient air permeability required of a sealant for practical use. Further, the foam suffers little decrease in tensile strength from the initial value because it also has excellent resistance to deterioration by moisture and heat, i.e., high hydrolytic stability. A door for a conditioner is also described which comprises a substrate having provided on at least one surface thereof a sealant layer which comprises the polyurethane foam for sealant.

    摘要翻译: 公开了一种用于密封剂的聚氨酯泡沫体,其由通过将包含多异氰酸酯成分和多元醇成分的反应混合物与给定量的臭氧抑制剂成分混合制备的组合物制备。 从泡沫获得预定形状的密封剂。 多元醇成分可以是通常用于生产软质聚氨酯泡沫的成分,特别优选包括在分子链中具有酯链段和醚链段的聚酯 - 聚醚多元醇。 该泡沫具有优异的耐臭氧性,因此保留了实际使用的密封剂所需的足够的透气性。 此外,泡沫体的拉伸强度几乎没有从初始值降低,因为它也具有优异的抗水分和热劣化性,即高水解稳定性。 还描述了一种用于调节器的门,其包括在其至少一个表面上设置有密封剂层的基底,该密封剂层包括用于密封剂的聚氨酯泡沫。