发明授权
US5725941A Powdered lacquer for coating substrates such as automobile bodies 失效
用于涂覆基材如汽车车身的粉末漆

  • 专利标题: Powdered lacquer for coating substrates such as automobile bodies
  • 专利标题(中): 用于涂覆基材如汽车车身的粉末漆
  • 申请号: US522113
    申请日: 1995-08-31
  • 公开(公告)号: US5725941A
    公开(公告)日: 1998-03-10
  • 发明人: Fritz Mezger
  • 申请人: Fritz Mezger
  • 申请人地址: DEX Stuttgart
  • 专利权人: Mercedes-Benz AG
  • 当前专利权人: Mercedes-Benz AG
  • 当前专利权人地址: DEX Stuttgart
  • 优先权: DEX4430919.8 19940831
  • 主分类号: C09D5/03
  • IPC分类号: C09D5/03 C09D5/36 C09D5/46 C09D7/00 B32B5/16
Powdered lacquer for coating substrates such as automobile bodies
摘要:
The invention relates to a multi-layer coating for vehicle bodies which contains a plurality of different coating layers that differ from one another with respect to certain material parameter values and which separate on the substrate surface following their joint application and arrange themselves automatically layer-wise on the substrate surface in a sequence that is determined by the values of these material parameters. The top coating layer that settles automatically on top after application consists of either 1) plate-shaped interference pigments made of liquid crystalline side chain polymers which separate and automatically align themselves roughly parallel with the surface of the substrate, or 2) curable liquid crystalline polymers. The color phenomenon of this latter top layer is determined by the mesogens of the coating that have an interferential effect, are not crosslinked during coating application, and automatically align themselves roughly diagonally to the substrate surface. These mesogens automatically arranging themselves in a chiral-pneumatic fashion, forming a helix. The coating located in the lower layer is provided with color pigments with an absorbent effect, which are either black or the same hue as the hue of the color-determining interference pigments or helices in the top coating layer.
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