Barium zirconium borate, pigments containing the same, and processes for their production

Claim 1

A PROCESS FOR THE PRODUCTION OF A HOMOGENOUS SOLID CONTAINING BARIUM ZIRCONIUM BORATE WHICH COMPRISES HEATING AT A TEMPERATURE BETWEEN APPROXIMATELY 800* AND APPROXIMATELY 1300*C. FOR A PERIOD BETWEEN APPROXIMATELY 10 MINUTES AND APPROXIMATELY 24 HOURS A COMMINGLED MIXTURE SELECTED FROM THE GROUP CONSISTING OF (I) 1 TO 2 MOLES OF ZIRCONIUM DIOXIDE AND 2 TO 1 MOLES OF BARIUM METABORATE, (2) 1 TO 2 MOLES OF ZIRCONIUM DIOXIDE AND BARIUM AND BORON COMPOUNDS THAT ARE CONVERTIBLE BY SUCH HEATING TO 2 TO 1 MOLES OF BARIUM METABORATE, AND (3) NIXTURES OF BARIUM METAZIRCONATE AND BORON COMPOUNDS WHEREIN SAID BORON COMPOUNDS ARE CONVERTIBL BY SUCH HEATING TO BORON TRIOXIDE CHARACTERIZED IN THAT THE AMOUNTS OF SAID BARIUM METABORATE AND THE RESULTING BORON TRIOXIDE ARE PRESENT IN ABOUT EQUAL MOLAR RATIOS.