会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Process of making an interpenetrating superabsorbent polyurethane foam
    • 制造互穿超吸收性聚氨酯泡沫的方法
    • US4725629A
    • 1988-02-16
    • US888301
    • 1986-07-18
    • Chad E. GarveyJose F. Pazos
    • Chad E. GarveyJose F. Pazos
    • C08G18/48C08L75/00C08G18/10C08G18/67
    • C08G18/4833C08G2101/0083C08G2270/00Y10S521/905
    • A superabsorbent polyurethane foam based on an interpenetrating polymer network of a crosslinked polyurethane and a crosslinked addition polymer containing a plurality of chain segments made up of functional group-containing repeating units which may be the same or different. The functional groups of the repeating units are selected from the group consisting of carbamoyl, substituted carbamoyl, and carboxy and the alkali metal and ammonium salts thereof. A method of preparing the foams is described which involves forming the polyurethane foam in the presence of addition polymerizable monomers and crosslinking agent and a thermally activated free radical initiator. Addition polymerization can take place during or after foam formation. Reactants and reaction conditions are selected so as to essentially avoid grafting addition polymer to polyurethane.Preferably, the polyurethane is derived from an isocyanate-terminated poly(oxyalkylene) polyol having an isocyanate functionality greater than two and the addition polymer is the reaction product of a crosslinking agent, such as methylene-bis-acrylamide and 1,6-hexanediol diacrylate, with at least one compound selected from the group consisting of acrylamides, substituted acrylamides, and acrylate and methacrylate salts, i.e., alkali metal and ammonium salts of acrylic and methacrylic acid.Such superabsorbent polyurethane foam is useful in the manufacture of absorbent articles, especially disposable absorbent articles such as diapers, sanitary napkins, bedpads, incontinent pads, and the like.
    • 基于交联聚氨酯的互穿聚合物网络和含有由相同或不同的含官能团的重复单元组成的多个链段的交联加成聚合物的超吸收性聚氨酯泡沫。 重复单元的官能团选自氨基甲酰基,取代的氨基甲酰基和羧基及其碱金属和铵盐。 描述了制备泡沫的方法,其涉及在加成聚合单体和交联剂和热活化的自由基引发剂的存在下形成聚氨酯泡沫。 加成聚合可以在泡沫形成期间或之后进行。 选择反应物和反应条件以便基本上避免将加成聚合物接枝到聚氨酯上。 优选地,聚氨酯衍生自具有大于2的异氰酸酯官能度的异氰酸酯封端的聚(氧化烯)多元醇,加成聚合物是交联剂如亚甲基双丙烯酰胺和1,6-己二醇二丙烯酸酯的反应产物 与至少一种选自丙烯酰胺,取代的丙烯酰胺和丙烯酸酯和甲基丙烯酸盐的化合物,即丙烯酸和甲基丙烯酸的碱金属和铵盐。 这种超吸收性聚氨酯泡沫可用于制造吸收制品,特别是一次性吸收制品如尿布,卫生巾,床垫,失禁垫等。