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Method of nonhazardous removal of paint containing heavy metals and coating preparation for performing the same

  • US 5,637,355 A
  • Filed: 04/22/1996
  • Issued: 06/10/1997
  • Est. Priority Date: 04/22/1996
  • Status: Expired due to Term
First Claim
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1. A method of removing paint containing heavy metal comprising:

  • introducing an additive which contains a buffer and a phosphate compound and which renders a heavy metal nonhazardous, to a coating preparation;

    applying said coating preparation onto a surface coated witha paint containing heavy metal;

    removing said coating preparation and said paint containing heavy metal from said surface wherein said removed coating preparation and said removed paint containing heavy metal are nonhazardous as defined by the Toxicity Characteristic Leaching Procedure.

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