知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.011 秒)

    Hydrophilic ester polyurethane foams
    4.
    发明授权
    Hydrophilic ester polyurethane foams 有权
    亲水酯聚氨酯泡沫

    公开(公告)号：US06756416B2

    公开(公告)日：2004-06-29

    申请号：US10074606

    申请日：2002-02-12

    申请人： Sharon A. Free ,  Vincenzo A. Bonaddio ,  Andrew M. Thompson ,  Joseph W. Lovette

    发明人： Sharon A. Free ,  Vincenzo A. Bonaddio ,  Andrew M. Thompson ,  Joseph W. Lovette

    IPC分类号： C08G1828

    CPC分类号： C08J9/40 ,  C08G18/4202 ,  C08G18/4252 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0083 ,  C08J2375/04

    摘要： An ester polyurethane foam is prepared by reacting a mixture of one or more polyester polyols with one or more isocyanates and one or more silicone surfactants in the presence of a blowing agent, such as water, and other additives, such as catalysts. The cured foam is chemically treated in a caustic solution to form a hydrophilic ester polyurethane foam having a water absorption rate of at least 20 pounds of water per square foot per minute, preferably at least 25 pounds of water per square foot per minute. The foam also has greater water holding capacity and wet strength than cellulose.

    摘要翻译： 通过使一种或多种聚酯多元醇与一种或多种异氰酸酯和一种或多种有机硅表面活性剂的混合物在发泡剂如水和其它添加剂如催化剂存在下反应来制备酯聚氨酯泡沫。 固化的泡沫体在苛性碱溶液中进行化学处理以形成亲水性聚酯酯泡沫，其吸水率为每平方英尺每分钟至少20磅水，优选每平方英尺至少25磅水。 该泡沫还具有比纤维素更大的保水能力和湿强度。