Due to their ease to synthesize and good stability to light and heat, phthalocyanines have been widely applied in dyes, pigments, photoelectric materials, catalysts, photodynaniic therapy and fluorescence analysis.
In neutral conditions, OP-10 enhanced the solubility of R6B/TiO2 system, which sightly affected the degradation process. Especially in case of 0.126 g/L (2.5 cmc), a better conversion trend of R6B and OP-10 occurred.
The titanyl sulfate solution is hydrolyzed according to theautonucleation,method by adding gradually the solution to abody of water at a constant rate over 10—20 min as to obtainan ionic Concertration after 1 min of feeding from 87 to96g/L。The concertration of H_2SO_4 in the final,hydrolysissolution is regulated to a value of 300 g/L by adding waterfrom the commencement of clouding of the hydrolysis solution upto the end of hydorlysis.
The text changes iron oxide pigment from needle-like particle to rice-like partricle with pressure method. The distributive scope of sifce is narrow. The property is steady while producing, the suitable precipitation reaction temperature is lower than 2°C The process of aging is twenty-four hours and its hydrothermal reaction is 160℃～180℃.
The following treatment of titanium dioxide pigment is investigated in this paper. Al Coat, Si-Al Coat and Si-Si-Al Coat are practised for granular TiO_2. Coated effeet is checked by acid solubility. Acid solubility of production is comparable wiht R-930TiO_2.