Flame retardant dispersions
Abstract
Abstract STABLE DISPERSIONS OF 3 TO 35 PERCENT BY WEIGHT OF COLLOIDAL ANTIMONY +3-TITANIUM+4 OXIDE, THE COLLOIDAL PARTICLES HAVING AN AVERAGE DIAMETER IN THE RANGE OF 2 TO 50 MILLIMICRONS, IN POLAR ORAGNIC SOLVENTS CONTAINING MONOVALENT ANIONS. THE MOLE RATIO OF ANTIMONY TO TITANIUM IS IN THE RANGE OF ABOUT 1.3:1 TO 1:3 AND THE MOLE RATIO OF MONOVALENT ANION TO METAL CATIONS IS IN THE RANGE OF 0.5:1 TO 1.7:1. THE METAL OXIDE SOLS ARE PREPARED IN ORGANIC SOLVENTS BY REACTING ASEOUS AMMONIA WITH SOLUTIONS OF ANTIMONY TRICHLORIDE AND TITANIUM TETRACHLORIDE IN DIMETHYLFORMAMIDE, THE OXGEN SOURCE BEING A STOICHIOMETRIC AMOUNT OF WATER. THE PRECIPITATED AMMONIUM CHLORIDE IS REMOVED BY FILTRATION. THE COLLOIDAL OXIDES CAN BE TRANSFERRED FROM DMF INTO OTHER POLAR ORGANIC SOLVENTS TO GIVE STABLE DISPERSIONS.
Inventors
- 👤 D Chay
- 👤 P Yates
Bibliographic Details
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