发明授权
US06495618B1 Graft copolymer with an amide functional group as a pigment dispersant 有权
具有酰胺官能团的接枝共聚物作为颜料分散剂

  • 专利标题: Graft copolymer with an amide functional group as a pigment dispersant
  • 专利标题(中): 具有酰胺官能团的接枝共聚物作为颜料分散剂
  • 申请号: US09466259
    申请日: 1999-12-17
  • 公开(公告)号: US06495618B1
    公开(公告)日: 2002-12-17
  • 发明人: Sheau-Hwa Ma
  • 申请人: Sheau-Hwa Ma
  • 主分类号: C08F27102
  • IPC分类号: C08F27102
Graft copolymer with an amide functional group as a pigment dispersant
摘要:
A polymer dispersant for pigments based on a graft copolymer wherein the graft copolymer has a weight average molecular weight of at least 3000 and has 10 to 90% by weight of a polymeric backbone and 90 to 10% by weight of macromonomer side chains attached to the backbone and wherein at least 20% by weight of the polymeric backbone has attached thereto an amide group which serves as a pigment anchoring group. The backbone may also have attached thereto an additional pigment anchoring group selected from the group consisting of aromatic ester, aromatic amine, aliphatic amine, and quaternary ammonium groups, or mixtures thereof. These materials disperse a wide variety of pigments and are useful in solvent borne coatings where they can provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.
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