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Electrostatically applicable coating powder and processes therefor

  • US 6,350,495 B1
  • Filed: 03/15/2000
  • Issued: 02/26/2002
  • Est. Priority Date: 06/24/1997
  • Status: Expired due to Fees
First Claim
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1. A process for forming a coating on an unfired or biscuit-fired ceramic substrate, which comprises:

  • coating electrostatically an unfired or biscuit-fired ceramic substrate with a coating powder, wherein the coating powder comprises 1 to 50% by weight of a ceramic or vitreous layer-forming composition A having a softening onset in a range of 400 to 750°

    C., and 50 to 99% by weight of a ceramic or vitreous layer-forming composition B having a softening onset in a range of above 750 to 1100°

    C., and firing the substrate at a temperature from above 900°

    C. to about 1,450°

    C.

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