公开(公告)号：US4656196A

公开(公告)日：1987-04-07

申请号：US904287

申请日：1986-09-08

申请人： David J. Kelly ,  Paul J. Cacciatore

发明人： David J. Kelly ,  Paul J. Cacciatore

IPC分类号： C08G18/40 ,  C08J9/00 ,  C08J9/14 ,  C08J9/38

CPC分类号： C08J9/0061 ,  C08G18/4018 ,  C08G18/4072 ,  C08G2101/005 ,  C08J2375/04 ,  C08J2425/00

摘要： An improved process for in situ production of a reticulated, open-cell polyurethane foam which comprises reacting a polyester/polyether polyol mixture with an aromatic polyisocyanate having a ratio of isocyanate moieties to aromatic moieties of about 2:1 in the presence of a catalyst and a blowing agent,the improvement comprises:said polyol mixture being(a) 80 to 95 parts by weight of polyester polyol and(b) 20 to 5 parts by weight of polyoxypropylene polyether polyol or a mixed poly(oxyethylene/oxypropylene polyether polyol, each having at least one polymer of ethylenically unsaturated monomers dispersed therein and a stabilizing surfactant for polyether polyurethane foam,and said process produces a polyurethane foam which has excellent strength properties and an exceeding low resistance to air flow.

公开(公告)号：US4670477A

公开(公告)日：1987-06-02

申请号：US817456

申请日：1986-01-09

申请人： David J. Kelly ,  Paul J. Cacciatore

发明人： David J. Kelly ,  Paul J. Cacciatore

IPC分类号： C08G18/40 ,  C08J9/00 ,  C08J9/14 ,  C08J9/38

CPC分类号： C08J9/0061 ,  C08G18/4018 ,  C08G18/4072 ,  C08G2101/005 ,  C08J2375/04 ,  C08J2425/00

摘要： An improved process for in situ production of a reticulated, open-cell polyurethane foam which comprises reacting a polyester/polyether polyol mixture with an aromatic polyisocyanate having a ratio of isocyanate moieties to aromatic moieties of about 2:1 in the presence of a catalyst and a blowing agent,the improvement comprises:said polyol mixture being(a) 80 to 95 parts by weight of polyester polyol and(b) 20 to 5 parts by weight of polyoxypropylene polyether polyol or a mixed poly(oxyethylene/oxypropylene polyether polyol, each having at least one polymer of ethylenically unsaturated monomers dispersed therein and a stabilizing surfactant for polyether polyurethane foam,and said process produces a polyurethane foam which has excellent strength properties and an exceeding low resistance to air flow.

摘要翻译： 用于原位生产网状开孔聚氨酯泡沫的改进方法，其包括在催化剂存在下使聚酯/聚醚多元醇混合物与异氰酸酯部分与芳族部分的比例为约2:1的芳族多异氰酸酯反应;和 发泡剂的改进包括：所述多元醇混合物为（a）80至95重量份聚酯多元醇和（b）20至5重量份聚氧丙烯聚醚多元醇或混合聚氧乙烯/氧丙烯聚醚多元醇 具有至少一种分散在其中的烯属不饱和单体的聚合物和用于聚醚聚氨酯泡沫的稳定表面活性剂，并且所述方法产生具有优异的强度性能和超过低的空气流阻力的聚氨酯泡沫。