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US2504003A Ammonium salt of polymeric nu-hydroxymethyl amic acids and waterrepellent compositions containing them 失效
含有羟基甲基氨基酸的铵盐和含有它们的防水组合物

  • Patent Title: Ammonium salt of polymeric nu-hydroxymethyl amic acids and waterrepellent compositions containing them
  • Patent Title (中): 含有羟基甲基氨基酸的铵盐和含有它们的防水组合物
  • Application No.: US65987646
    Application Date: 1946-04-05
  • Publication No.: US2504003A
    Publication Date: 1950-04-11
  • Inventor: CUPERY MARTIN E
  • Applicant: DU PONT
  • Assignee: E I Du Pont de Nemours and Co
  • Current Assignee: E I Du Pont de Nemours and Co
  • Priority: US65987646 1946-04-05
  • Main IPC: C08F8/00
  • IPC: C08F8/00
Ammonium salt of polymeric nu-hydroxymethyl amic acids and waterrepellent compositions containing them
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